Pollution & Environmental Issues

Court on climate right and how India can enforce it

Context: The recent Supreme Court judgment in M.K. Ranjitsinh and Ors. vs Union of India & Ors. has made a significant impact on India's nascent climate change jurisprudence.

By recognizing the right to be free from the adverse effects of climate change within the Constitution, the Court has opened new avenues for climate governance and litigation. This judgment provides an intriguing opportunity for the new government to enact more systematic and robust climate governance.

The Judgment and Its Context

Background of the Case:

The case primarily dealt with the construction of electricity transmission lines through the habitat of the critically endangered Great Indian Bustard. The government argued that a prior order protecting this habitat hindered the development of renewable energy infrastructure, essential for combating climate change.

Supreme Court's Decision: The Court modified the previous order to facilitate the development of renewable energy infrastructure, prioritizing national clean energy goals over local conservation efforts in this instance.

Constitutional Basis: The right against the adverse effects of climate change is now seen as an extension of the right to life (Article 21) and the right to equality (Article 14).

  • Right to Life (Article 21): This right has been broadly interpreted to include the right to a healthy environment, thus forming a legal basis for protection against climate change.
  • Right to Equality (Article 14): This asserts that environmental burdens and benefits should not be distributed in a manner that discriminates against any particular group.

This interpretation opens the door for future climate litigation and demands from citizens for governmental accountability in climate protection.

Potential Challenges:

  • Addressing Unresolved Questions
    • Despite its ground breaking nature, the judgment leaves several important questions unanswered:
  • Emphasis on Clean Energy:
    • Does the judgment overstate the importance of large-scale clean energy projects as the primary solution to climate change, potentially underestimating the importance of local environmental resilience and climate adaptation?
  • Protection and Enforcement:
    • How will the right against adverse climate effects be protected and enforced in practical terms?
  • Government Agenda:
    • What does this judgment mean for the policy agenda of the newly formed government?

Two Approaches:

  • Legislative vs. Judicial Approaches
    • Judicial Approach: Enhanced litigation around climate claims may lead to a patchwork of protections that are incomplete and contingent on subsequent policy actions.
    • Legislative Approach: A comprehensive climate legislation could provide a more systematic and overarching framework for addressing climate change.

Need for Climate Legislation

  • The Supreme Court acknowledged the absence of an ‘umbrella legislation’ related to climate change in India.
  • Framework legislation can:
    • Set a vision for climate engagement across sectors and regions.
    • Create institutions with necessary powers.
    • Establish processes for structured and deliberative climate governance.

Distinct Needs of India: India should not merely emulate climate legislation from other countries but tailor it to its unique developmental, ecological, and socio-economic context.

Key Components of Proposed Legislation:

  • Support for Sustainable Development:
    • Regulations for sustainable cities, buildings, and transport systems.
    • Promotion of climate-resilient agricultural practices and crop diversification.
    • Protection of critical ecosystems like mangroves.
  • Social Equity Considerations:
    • Ensure that climate legislation addresses social equity and justice, integrating these considerations in all climate-related policies.
  • Adaptation and Mitigation:
    • Balance between mitigation efforts (like emission reductions) and adaptation strategies (like heat action plans and resilient infrastructure).

What should be done:

  • Learning from International Experience
    • Avoid narrowly focused regulatory laws like the UK's carbon budgets approach. for example, by setting regular five yearly national carbon budgets and then putting in place mechanisms to meet them. This sort of approach, which has unfortunately become somewhat of a template for countries to follow, is ill-suited to India
    • Adopt enabling laws that stimulate development-focused decisions across various sectors (urban, agriculture, water, energy) are more appropriate. These laws should systematically integrate climate resilience and low-carbon growth into decision-making processes.
    • Emphasize both adaptation and mitigation.
    • Create institutions and processes for mainstreaming climate change considerations.
  • Federalism and Climate Law : Given India's federal structure, an effective climate law must navigate the complexities of Indian federalism
    • National Framework with Local Empowerment: The law should set a coherent national framework while decentralizing authority to empower States and local governments.
    • Sub-National Jurisdictions: Climate action areas like urban policy, agriculture, and water management often fall under sub-national jurisdictions. The law should facilitate collaboration and provide necessary support.
  • Engaging Non-Governmental Actors: An effective climate law should also involve non-governmental actors:
    • Inclusive Participation: Engage businesses, civil society, and communities in the decision-making process.
    • Knowledge Sharing: Leverage the knowledge and expertise of diverse societal segments to enhance climate resilience and energy transition efforts.

Conclusion:

The Supreme Court's recognition of a constitutional climate right in the Ranjitsinh judgment presents an opportunity for India to enact comprehensive climate legislation. Such legislation should be tailored to India's unique context, emphasizing both mitigation and adaptation, and ensuring inclusive, participatory governance to effectively address the adverse effects of climate change.

Global E-Waste Monitor 2024

Context: The report focuses on e-waste, such as smartphones, computers and solar panels. It does not cover lithium batteries used in e-vehicles.

About Global E-Waste Monitor 2024

  • Published by: International Telecommunication Union (ITU) and United Nations Institute for Training and Research (UNITAR).

Key Findings

  • Less than 23% of the 62 billion kg of e-waste generated was properly recycled in 2022.
  • The most e-waste per capita generated is in Europe, followed by Asia and then America. 
  • By total weight, China generated the most e-waste in 2022 at 12 billion kg with America second at 7.2 billion kg followed by India at 4.1 billion kg.
  • It predicts that e-waste generation will increase by over 10 billion kg by 2030.

Impact of Rising Temperatures on Global Health

About Heat Crisis

  • Recent data confirms that 2023 marked the hottest year on record, signaling a disturbing trend of increasing global temperatures. This trend poses significant threats to urban and rural areas alike, particularly as cities expand at the cost of natural landscapes. Experts predict that for those born in 2023, it may be the coolest year of their lives, hinting at the severe climate challenges ahead.

The immediate threat posed by heat waves

  • As summer progresses across the Indian Subcontinent, the immediate threat posed by heat waves becomes more pronounced. Heat waves, characterized by unusually high temperatures and often exacerbated by increased humidity, significantly impact health. The combination of heat and humidity, referred to as "moist heat," increases the stress on the human body.
  • According to the India Meteorological Department (IMD), there has been a 30% increase in moist heat stress from 1980 to 2020, underscoring the growing impact of these climate-related events.

Health Impacts of Heat Exposure

The health ramifications of global warming are extensive and multifaceted, impacting human, animal, and plant health.

Direct consequences include:

  • Physical stress from heat: Increased body temperature can lead to dehydration, inability of the skin to cool the body through perspiration, and dilatation of blood vessels and thickening of blood with increased risk of clot formation (thrombosis).
  • Extreme weather: Events like heatwaves exacerbate public health crises by directly affecting vulnerable populations, including the elderly, infants, and those with pre-existing conditions.
    • A global study published in 2022 covering 266 studies found that heat waves are linked to a 11.7% increase in mortality.
    • The most significant risks were for stroke and coronary heart disease. As the population ages and cardiovascular risk factors such as hypertension, diabetes, and obesity become more prevalent, each 1°C increase in temperature could significantly amplify the risk of severe cardiovascular events.
  • Spread of diseases: Changes in climate affect the distribution of mosquitoes and other vectors, leading to the spread of diseases like malaria and dengue.
  • Worsening non-communicable diseases: Heat contributes to higher incidences of strokes, heart attacks, respiratory diseases, and other chronic conditions.
    • Even as of now, NCDs contribute to 65 per cent of deaths in India — a majority of them in productive mid-life. The heat effects of climate change will only exacerbate the problem.
  • Mental health: he psychological impact of climate events can lead to stress, anxiety, and depression.
  • Infrastructure strain: Health systems face increased demand not only from direct heat effects but also from the displacement of populations and damage to healthcare facilities due to extreme weather.

Environmental and Societal Consequences

  • Wildfires: triggered by excessive heat release particulate matter (PM 2.5) and toxic chemicals (ozone, carbon monoxide, polycyclic aromatic compounds and nitrogen dioxide) can cause extensive inflammation, increasing the risk of cardiovascular disease (heart attacks, strokes, heart rhythm abnormalities, pulmonary embolism, heart failure), respiratory disease, diabetes and pre-diabetes. Chemicals like benzene and formaldehyde (also present in wildfire emissions) increase the risk of cancer.
  • Agricultural impact: Heat stress combined with water scarcity reduces crop yields and nutrient quality, jeopardizing food security.
    • Countries in South Asia and sub-Saharan Africa currently grow staples (like rice and wheat) at the highest levels of heat tolerance. A further increase of 1 degree centigrade will lower their yield by 10 per cent. The crops will also be more deficient in zinc, protein and iron.
    • The Data Sciences Centre of Columbia University has estimated that if global warming continues unabated, India of 2050 will have 49 million more zinc deficient persons and 38.2 million new protein deficient persons, while 106.1 million children and 396 million women would be iron deficient.
    • Protective foods like fruit, vegetables and fish would be depleted. These foods reduce the risk of cardiovascular disease and diabetes.
    • Rising ocean temperatures will flood coastal agriculture while reducing fish yields.
  • Biodiversity loss: Rising temperatures threaten biodiversity, which is crucial for maintaining resilient food systems and access to nutritious wild foods.

Adaptive Strategies for a Warmer World

In response to these challenges, it is critical to develop comprehensive adaptation strategies that include:

  • Heat action plans: Tailored for both urban and rural settings, these plans aim to mitigate the impact of heatwaves.
  • Climate-resilient systems: Enhancements in food and healthcare systems to withstand climate changes are essential.
  • Public education and infrastructure: Educating the public and healthcare providers about heat risks and protective measures is crucial. Infrastructure improvements, such as heat-reflective building materials and increased green spaces, are also vital.
  • Personal protection measures: Wearing light-colored, loose-fitting clothes, using umbrellas or hats, and increasing water intake are practical steps individuals can take to protect themselves from heat.

As the planet faces unprecedented warming, the need for urgent action to mitigate climate change and adapt to its inevitable impacts becomes increasingly crucial. Both systemic and individual level changes are essential to safeguard global health against the rising tide of heat-related challenges.

IISc develops Hydrogel to tackle microplastics

Context: Researchers at the Indian Institute of Science (IISc) have developed a sustainable hydrogel that effectively removes microplastics from water, addressing significant environmental and health challenges.

More about the news: 

  • Microplastics, small plastic debris, pose significant health risks as they can enter the human body through the water, potentially leading to various illnesses. These particles are pervasive, found even in remote areas such as polar ice caps and deep ocean trenches, threatening both aquatic and terrestrial life.
  • The IISc team created a hydrogel with a complex structure called an inter-penetrating polymer network (IPN), composed of three different polymers: chitosan, polyvinyl alcohol, and polyaniline. This structure was combined with copper substitute polyoxometalate (Cu-POM) nanoclusters, which act as catalysts under UV light to degrade microplastics.
  • The hydrogel is capable of adsorbing and breaking down large amounts of microplastics. Testing showed that the hydrogel could remove approximately 95% and 93% of two different types of microplastics in water at a near-neutral pH of about 6.5. 
  • This process was enhanced by the inclusion of a fluorescent dye in the microplastics, allowing the researchers to track the efficiency of the hydrogel under various conditions such as different pH levels, temperatures, and concentrations of microplastics.

About hydrogel:

  • It is a biphasic material, a mixture of porous, permeable solids and at least 10% by weight or volume of interstitial fluid composed completely or mainly by water. 
  • It is three-dimensional (3D) cross-linked natural or synthetic polymers polymer networks and a fluid, which can absorb and retain large amount of water. Because of their tunable properties as well as their versatile fabrication methods, hydrogel materials have been applied in a wide range of biomedical and engineering applications, ranging from tissue engineering and regenerative medicine to wastewater treatment and soft robotics
  • They are a jelly-like material and can be found naturally or synthesized in a lab. 
  • Generally non-toxic and non-immunogenic, meaning they don't trigger an immune response in the body, makes them ideal for biomedical applications such as drug delivery, tissue engineering, and wound healing (due to water retention, that can help to keep tissues hydrated and promote healing).
  • Some hydrogels can change their properties in response to external stimuli such as temperature, pH, or light, makes them useful for controlled drug delivery applications.
  • It is also used in some contact lenses to help keep them comfortable and moist.
  • It can be added to soil to help retain moisture.

Plastic Overshoot Day report

Context: The Plastic Overshoot Day report said global plastic waste generation has risen by 7.11 per cent since 2021.

Key finding of the report: 

image 36
  • The Plastic Overshoot Day report by Swiss non-profit EA Earth Action said global plastic waste generation has risen by 7.11 per cent since 2021
  • The world is estimated to have generated 220 million tons of plastic waste this year, 70 million tons of which will end up polluting the environment.
  • 12 countries are responsible for 60 per cent of the world's mismanaged plastic waste: China, India, Russia, Brazil, Mexico, Vietnam, Iran, Indonesia, Egypt, Pakistan, the United States and Turkey.
  • Belgium are the top generators of plastic waste, with a yearly waste production of 147.7 kg per person. This is 16 times higher than in India.
  • Oman tops the list of countries in terms of mismanaged plastic waste, with a projected 111 kg of mismanaged plastic per person in 2024. This is 30 times higher than Norway. India is in the bottom 12 countries.
  • On September 5, 2024 , that the plastic waste produced worldwide will surpass the planet's waste management systems and will be called "Plastic Overshoot Day".

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  • Each country has its own "Plastic Overshoot Day", determined by the amount of plastic waste generated and the country's capacity to manage it. India will reach its Plastic Overshoot Day on April 23,2024.
  • The amount of plastic produced is expected to double by 2040, which will triple the volume of plastic pollution. The underlying issues with plastic pollution are the excessive production and use of plastic across the planet and the lack of sufficient waste management systems to properly process plastic after it has been used. 

Status of India’s Plastic Waste Management

  • India is a "low-waste-producing" polluter due to its low per capita plastic waste production (8 kg per capita per year). India's expected mismanaged waste in 2024 will be 7.4 million tons, which is "very high".
  • India's mismanaged plastic waste will be less than one-fifth of China and one-third of the US.
  • India is estimated to release an average of 4 lakh tons of microplastics into the environment and 32 thousand tons of chemical additives into waterways.

Clean Air Flagship Initiative of CCAC

Context: At the Climate and Clean Air Coalition's (CCAC) annual Climate and Clean Air Conference launched the Clean Air Flagship Initiative to mobilise the partnership and 'move the needle' on achieving clean air across the world by boosting cooperation and reducing pollutant emissions.

Clean Air Flagship

Clean Air Flagship aims to provide a platform to boost regional coordination and private sector engagement, data led policy action, financing, science & advocacy. 

It is an initiative under Climate and Clean Air Coalition, convened by UNEP.

Aims of Clean Air Flagship Initiative are:

  • Saving Lives: Supporting governments to achieve cleaner air as quicky as possible, consistent with improved air quality interim targets.
  • Slowing climate change: Taking full advantage of win-win opportunities to reduce emissions of short-lived climate pollutants simultaneously with other harmful pollutants.
  • Maximizing co-benefits: Improving agricultural productivity, economic development and overall quality of life.

Activities under Clean Air Flagship Initiative

  • Amplify and strengthen regional and multi-level governance, cooperation and capacity on integrated climate and air quality management.
  • Strengthen science communication to support policy action and fill critical information gaps, especially on economic cost and benefits of climate and clean air action and through integrated inventories, monitoring and air pollution modelling.
  • Elevate air quality agenda through advocacy, by highlighting readily available solutions, providing capacity support for data and implementation and reinvigorating BreatheLife Network.
  • Promote transparency to encourage private sector action on integrated climate and air quality management.
  • Mobilise finance for air quality agenda by raising US$ 30-40 million through a Clean Air Sprint.

Actions under Clean Air Flagship in 2024

  • Convene a Clean Air Task Team of all interested partners to guide the Flagship.
  • Launch a knowledge platform for air quality managers and host national and sub-regional technical and advocacy workshops.
  • Support country-driven projects on air quality including on National Clean Air and SLCP plans.
  • Re-invest in BreatheLife and engage with key partners in a new campaign to be launched on Clean Air Day in 2024.
  • Convene a series of Ministerials including a Joint Climate and Health Ministerial on the margins of WHO Global Conference on Air Pollution and Health.

Bioplastics and Plastic Waste Management Rules, 2024

Context: Plastic is the third most commonly used petroleum derivative in the world; each year 200 million tons of plastic are consumed on the planet. It comes from a non-renewable source (petroleum), it is contaminating and non-biodegradable (it can take more than 1000 years to decompose). In this context India has come out with rules to regulate the Plastic Waste Management rules, with its latest version in 2024, seeking to incentivize bioplastics.

Issues highlighted in the Plastic Waste Management Rules, 2024:

  • Biodegradable Plastics are those plastics which do not leave any micro plastics on degradation.
  • But the rules don't specify any chemical tests to test the absence of microplastics. This makes it harder for makers of disposable plastic ware to label such products as biodegradable.

About: Bioplastics

  • Biodegradable material that come from renewable sources.
  • These are 100% degradable, equally resistant, and versatile, already used in agriculture, textile industry, medicine and, overall, in the container and packaging market
  • PHA as bioplastic- These are polyesters produced by fermenting raw vegetable materials with a series of bacterial strains. For example, PHAs can be used for injection moulding to build automobile parts and for many other uses. Specifically, PHA (polyhydroxyalkanoate) is extracted from bacteria such as pseudomonas. In its natural form, it is similar to transparent kitchen film, with the difference that it is an authentic bioplastic.
Advantages of bioplastics

Advantages of bioplastics

  • They reduce carbon footprint
  • They are providing energy savings in production.
  • They do not involve the consumption of non-renewable raw materials
  • Their production reduces non-biodegradable waste that contaminates the environment
  • They do not contain additives that are harmful to health, such as phthalates or bisphenol A 
  • They do not change the flavour or scent of the food contained.

Uses of Bioplastics

It is expanding its use in various sectors:

  • medical (prostheses) 
  • in food (catering products, disposable containers ...), 
  • toys, and even in the 
  • world of fashion (Versace has a clothing line Ingeo, made ​​from corn) and, of course, biodegradable bags.

Salient Features of Plastic Waste Management Rules, 2024

  • Biodegradable plastics have been defined as any plastics, other than compostable plastics, which undergoes degradation by biological processes in specific environment such as soil, landfill, sewage sludge, fresh water, marine, without leaving any micro plastics or visible or distinguishable or toxic residue, which has adverse environment impact.
  • The definition of “importer” has been made specific and now includes the imports of any plastic packaging/ commodity with plastic packaging/ carry bags/ plastic sheets/ plastic raw material, including in the form of resin/ pellets/ intermediate material used for manufacturing plastic packaging/ films/ preforms, for commercial use. 

Note: Earlier, “importer” meant a person who imports plastic packaging or products with plastic packaging or carry bags or multi-layered packaging or plastic sheets or like. 

  • Earlier, “Manufacturer” meant and included a person/ unit/ agency engaged in production of plastic raw material to be used as raw material by the producer. 

Now, it includes a person engaged in production of plastic raw material/ compostable plastics/ biodegradable plastics. 

  • Earlier, the ambit of the definition of “Producer” was limited to people engaged in manufacturing of plastic packaging. Now, it also includes persons engaged in: Manufacturing of intermediate material that is used for manufacturing plastic packaging; Contract manufacturing of products using plastic packaging or through other similar arrangements for a brand owner. 
  • Definition of “seller” has been inserted which means any person who sells plastic raw material for producing plastic packaging is a seller. 
  • Only the producers registered under these rules can get raw materials from the manufacturer. 
  • The manufacturers of compostable plastic/ biodegradable plastic carry bags or commodities permitted under the rules, will have to obtain a certificate from the Central Pollution Control Board (‘CPCB’) before marketing or selling. The manufacturer of compostable plastic/ biodegradable plastic will have to inform the CPCB, the quantity of such commodities introduced in the market and the pre-consumer waste generated by it. 
  • Enables the local body to assess: The plastic waste generated; Plastic waste management infrastructure available for collection/ segregation/ processing and send a report to the State Pollution Control Board or Pollution Control Committee by 30th June of each year; measures to prevent stocking, distribution, sale, and usage of prohibited single use plastic items in their jurisdiction. 
  • The Annual report will include plastic waste management infrastructure available for collection, segregation, processing; projection of plastic waste to be generated; status on framing and implementation on byelaws; Action taken to prevent stocking, distribution, sale, and usage of prohibited Single Use Plastic items. 
  • “Responsibility of Panchayat at District level” has been inserted which lays down similar responsibilities the local body has to assess. 
  • Another provision in the Protocols for compostable and biodegradable plastic materials has been inserted which says that the BIS should specify separate colour/ marking for plastic packaging and commodities made from compostable plastics/ biodegradable plastics. 
  • New provisions relating to “Marking or labelling”: The commodity made from compostable plastic will have to bear a label “compostable only under industrial composting” and shall conform to the Indian Standard. The commodity made from biodegradable plastic will have to bear the label —Biodegradable 

The Advanced Oxidation Technology or TADOX®

Context: The Energy and Resources Institute (TERI), New Delhi, has developed a technology called The Advanced Oxidation Technology or TADOX® that will ensure affordable and sustainable Zero Liquid Discharge (ZLD) compliance set by the Central Pollution Control Board (CPCB) for Common Effluent Treatment Plants (CETP) in industrial clusters. 

The Advanced Oxidation Technology or TADOX®

  • TADOX utilises UV-Photocatalysis as an Advanced Oxidation Process (AOP) during the secondary treatment stage of wastewater treatment leading to oxidative degradation and mineralisation of targeted pollutants.
    • At Secondary Treatment Stage, the wastewater has already undergone some initial treatment, typically involving biological processes that remove organic matter.
  • UV-Photocatalysis:
    • UV Light: TADOX® introduces ultraviolet (UV) light to the wastewater, which has high energy and sanitation potential. 
    • Catalyst: The water also contains a catalyst, most commonly titanium dioxide (TiO2), which helps the UV light to trigger the chemical reaction.
    • Oxidative Degradation: When UV light hits the catalyst, it energises the TiO2 particles. These energised particles then react with water molecules (H2O) to create highly reactive hydroxyl radicals (OH•). These hydroxyl radicals are very powerful oxidisers, meaning they readily attack and break down a wide range of pollutants in wastewater, including organic matter, colour, and micropollutants. 
    • Mineralisation: The breakdown process by hydroxyl radicals does not just break down the pollutants into smaller pieces. It completely mineralises pollutants, often converting them into simple molecules like carbon dioxide (CO2) and water (H2O).
  • TADOX® could be integrated and retrofittable in existing treatment systems making it a viable option as a novel Decentralised Wastewater Treatment Technology (DWTT) applicable in upcoming and existing infrastructural projects, townships, commercial complexes, green buildings, and smart cities.
image 12

Significance:

  • It reduces dependence and load on biological and tertiary treatment systems to achieve Zero Liquid Discharge (ZLD).
  • It reduces the production of sludge to 0.5 kg per metre cube (as compared to standard treatments which produce around 30-40 kg per cubic metre, since a lot of chemicals are used in the wastewater treatment). Further, the sludge produced in the process is non-toxic.
  • It can bring down capital expenditure on ZLD by 25-30% and operating expense by 30-40% for industrial wastewater treatment.
  • It can reduce Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), dissolved organics, pathogens, Persistent Organic Pollutants (POPs), and Micropollutants. 
  • It improves biodegradability, thereby preventing biofouling of membranes and enhancing life span and efficiency of RO systems as also overall load on evaporators like Multiple Effect Evaporators and Mechanical vapour recompression (MVR). 

CoP28 turns attention to potent Methane emissions

Context: Climate talks often revolve around reducing the most dangerous greenhouse gas, carbon dioxide (CO2). In the CoP28 meeting to be held in Dubai next week, along with CO2, the likely attention will be diverted to powerful heat-trapping emissions by Methane. 

About Methane:

  • Methane (CH4) is a colourless, odourless, flammable gas that is the main component of natural gas. Atmospheric methane (CH4) occurs abundantly in nature as the primary component of natural gas. 
  • It is a powerful greenhouse gas i.e., it traps heat in the atmosphere and contributes to global warming. It is the second largest contributor to climate change, accounting for around 16% of the warming effect.
  • Methane remains in the atmosphere for only about 12 years, but has a much more powerful warming impact than CO2.
  • Methane is about 21 times more potent than carbon dioxide (CO2) at trapping heat in the atmosphere over a 100 year timescale. This means that one tonne of methane emitted into the atmosphere has the same warming effect as 21 tonnes of CO2.
image 36

Sources:

  • There has been a steady increase of methane in the atmosphere, with concentrations currently over two-and-a-half times greater than pre-industrial levels.
  • Around 60% of methane emissions are linked to human activity, while most of the remainder is from wetlands.
  • Agriculture is the biggest emitter, responsible for roughly a quarter of emissions. Most of that is from livestock (cows and sheep release methane during digestion and in their manure) and rice cultivation, where flooded fields create ideal conditions for methane-emitting bacteria.
  • Energy sector - coal, oil, and gas - is the second largest source of human caused methane emissions. Methane leaks from energy infrastructure, such as gas pipelines, and from deliberate releases during maintenance.
  • Discarded household waste also releases large quantities of methane when it decomposes, if left to rot in landfills.
image 37

Way Forward:

  • A recent International Energy Agency report estimates that rapid cuts in methane emissions linked to the fossil fuel sector could prevent up to 0.1 degrees Celsius of warming by mid-century.
  • It could be achieved by repairing leaky infrastructure and eliminating routine flaring and venting during maintenance.
  • For rice fields, changes to water management are the “most promising” way to reduce emissions.

Nitrogen Dioxide Pollution

Context: The surge in nitrogen dioxide levels witnessed in certain areas of Delhi might be attributed to the increased Diwali-related traffic, exacerbating the city's air pollution challenges. The recorded levels were four times higher than the National Ambient Air Quality Standards recommended 24-hour limit and exceeded the World Health Organisation's guidelines by over 13 times.

image 15

More about the news:

  • In South Delhi, the Delhi Pollution Control Committee's data reveals a concerning NO2 level of 329.7 µg/m3 at 5 pm. To put this in perspective, the national 24-hour standard is 80 µg/m3, while the WHO recommends a stricter guideline of 25 µg/m3.
  • Despite the implementation of all four stages of the Graded Response Action Plan (GRAP) in Delhi, including restrictions on transport like a ban on diesel medium and heavy goods vehicles, NO2 levels remain high.
  • TERI and the Automotive Research Association of India's 2018 emissions inventory indicates that the transport sector is a major contributor, accounting for 81% of NOx emissions among local sources in Delhi.
  • The National Capital Region faces NOx from various sources, including power plants, diesel generators, and industries.
  • During this period, pollutant spikes, including gases like nitrogen dioxide, can occur due to the trapping of pollutants in cool, calm conditions. 

What is Nitrogen Dioxide?

  • Nitrogen dioxide, or NO2, belongs to the nitrogen oxides (NOx) group—a collection of gases formed when fossil fuels like coal, oil, natural gas, or diesel undergo combustion at high temperatures.
  • Existing as a gas at ambient temperatures, nitrogen dioxide is acidic, corrosive, and possesses strong oxidizing properties.
  • Recognized for its pungent odour, NO2, along with fine particulate matter, contributes to the characteristic reddish-brown haze associated with smog. 
  • This reactive gas plays a key role in the creation of various air pollutants such as ozone (O3), nitric acid (HNO3), and nitrate (NO3-) particles, all generated through photochemical reactions.

Sources of Nitrogen Dioxide Emissions: 

  • The main sources of NO2 emissions are trucks, buses, and cars, and there are additional contributions from diesel-powered non-road equipment, industrial processes (such as oil and gas production, industrial boilers, and mobile engines), coal-fired power plants, and even food processing industries.
  • Nitrogen dioxide isn't typically emitted directly into the air; instead, it forms when nitrogen oxide (NO) and other nitrogen oxides (NOx) react with other airborne chemicals.
  • Notably, burning natural gas (methane), both outdoors (e.g., gas-fired power plants) and indoors (e.g., stoves, dryers, space heaters), produces NO2.
  • Natural sources, like volcanoes and bacteria, also release nitrogen oxides.

Environmental Effects:

  • Nitrogen dioxide, even at short-term concentrations of 120 µg/m3, proves toxic to plants, hindering their growth. When coupled with sulphur dioxide and ozone, the adverse effects intensify, potentially leading to acid rain formation.
  • NO2 also directly absorbs shorter blue wavelengths of visible light, contributing to visibility reduction, and indirectly contributes to nitrate aerosol haze formation (brownish hue/summer smog). 
  • In the presence of moisture, nitrogen dioxide forms corrosive acids, impacting building materials at elevated concentrations.
  • Indoor Pollution:
  • Indoor NO2 levels are predominantly influenced by NO2-emitting appliances, indoor-outdoor air exchange rates (such as open or closed windows), and seasonal variations.
  • Common indoor sources of NO2 emissions include gas stoves and space heaters and improperly vented furnaces, water heaters, and clothes dryers are additional potential sources.

Health Effects of Nitrogen Dioxide Pollution:

  • Nitrogen dioxide induces various adverse effects on lung health, including heightened inflammation and exacerbated cough and wheezing.
  • Scientific evidence also suggests a potential link between NO2 exposure and the development of asthma in children. 
  • In a comprehensive 2022 review, multiple studies indicated a strong association between elevated NO2 levels, increased particulate matter, sulphur dioxide, and detrimental impacts on heart and lung health. These pollutants were also found to affect pregnancy and birth outcomes, posing a likely risk of kidney and neurological harm, autoimmune disorders, and cancer.
  • AIIMS Study on NO2 Pollution:
  • A study conducted by AIIMS, Delhi, revealed that exposure to nitrogen dioxide (NO2), even over a short duration ranging from zero to seven days, led to a staggering 53% increase in emergency room visits.
  • This finding is particularly alarming as it surpasses the impact of the more familiar pollutant PM 2.5, which increased patient load by 19.5%.
  • Notably, the study observed a higher rate of admissions among individuals with co-existing health conditions rather than solely respiratory illnesses.

WHO Air quality guidelines:

  • The Air Quality Guidelines (AQG) established by the World Health Organization (WHO) serve as a global benchmark, guiding national, regional, and city governments in their efforts to enhance the health of their citizens by mitigating air pollution.
  • WHO consistently integrates scientific evidence on the health impacts of air pollution and monitors the progress of countries in improving air quality.
  • In 2021, WHO released a revised Global Air Quality Guidelines announcing more stringent limits for six pollutant categories – particulate matter (PM), ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2) and carbon monoxide (CO). 
  • The guidelines set the stage for eventual shifts in policy in the government towards evolving newer stricter local and national air quality standards and will help countries in protecting health as well as mitigating global climate change.

Recommended 2021 AQG levels compared to 2005 air quality guidelines: 

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(Follow the link to read India government initiatives to deal with air pollution: https://compass.rauias.com/current-affairs/northern-plains-most-polluted-region/)

India’s Green Hydrogen move may worsen pollution

Context: India’s green hydrogen move may worsen pollution if steps are not in place, says study.

Green Hydrogen

  • It also referred to as ‘Clean hydrogen’ is produced by splitting water into two hydrogen atoms and one oxygen (electrolysis process) atom using clean energy from surplus renewable energy sources such as solar or wind power. 
  • Green hydrogen could be a critical enabler of the global transition to sustainable energy and net zero emissions economies.

Green Hydrogen Standard

  • Green Hydrogen shall mean Hydrogen produced using renewable energy, including production through electrolysis or conversion of biomass. Renewable energy also includes such electricity generated from renewable sources which is stored in an energy storage system or banked with grid in accordance with applicable regulations.
  • Green Hydrogen produced through electrolysis: Non-biogenic greenhouse gas emissions arising from water treatment, electrolysis, gas purification and drying and compression of hydrogen shall not be greater than 2 kg of CO2 equivalent per kg of Hydrogen, taken as an average over last 12-month period. 
  • Green Hydrogen produced through conversion of biomass: Non-biogenic greenhouse gas emissions arising from biomass processing, heat/steam generation, conversion of biomass to hydrogen, gas purification and drying and compression of hydrogen shall not be greater than 2 kg of CO2 equivalent per kg of Hydrogen taken as an average over last 12-month period.
  • Bureau of Energy Efficiency shall be the Nodal Authority for accreditation of agencies for monitoring, verification, and certification of Green Hydrogen production projects. 
  • A detailed methodology for measurement, reporting, monitoring, on-site verification and certification of green hydrogen and its derivatives shall be specified by the Ministry of New & Renewable Energy.

National Green Hydrogen Mission

Objective- “To make India the Global Hub for production, usage and export of Green Hydrogen and its derivatives.” 

  • This will contribute to India’s aim to become Aatmanirbhar through clean energy and serve as an inspiration for the global Clean Energy Transition.
  •  The Mission will lead to significant decarbonization of the economy, reduced dependence on fossil fuel imports, and enable India to assume technology and market leadership in Green Hydrogen.”

Key component of the mission

The achievement of Mission objectives requires a comprehensive strategy that coordinates efforts across multiple sectors. 

The Mission strategy accordingly comprises interventions for:

  • Demand creation by making Green Hydrogen produced in India competitive for exports and 

through domestic consumption. 

  • Addressing supply side constraints through an incentive framework.
  • Building an enabling ecosystem to support scaling and development.
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Potential Outcome

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 Challenges in Green Hydrogen development

  • Renewable energy supply crunch: India’s National Green Hydrogen Mission, piloted by the Ministry of New and Renewable Energy (MNRE) expects to manufacture five million tons by 2030. This would require the installation of renewable energy capacity worth 125 GW (1 GW is 1,000 megawatts) and the use of 250,000 gigawatt-hr. units of power, equivalent to about 13% of India’s present electricity generation. However, the present renewable energy capacity is 179 GW only (July 2023).
  • Relying on conventional energy sources: -The main concern is that if electrolysers, which split water to produce hydrogen and oxygen, were run 24x7, they would be expected to operate even at night when no solar power is available. This would then mean tapping into conventional coal-fired electricity (about 70% of the electricity on the grid is coal-generated).
  • Burning Biomass: -Another challenge is that India’s standards allow the use of biomass — which also results in carbon emissions when burnt — to produce green hydrogen.
  • Technology: It is a rich source of energy, but the challenge is to compress or liquify it. It needs to be kept at a stable minus 253°C (far below the temperature of (-) 163°C at which Liquified Natural Gas (LNG) is stored; making its ‘prior to use cost’ extremely high.
  • Prohibitive Costs: The ‘production cost’ of ‘Green hydrogen’ has been a prime obstacle. Research conducted by the International Renewable Energy Agency (IRENA) indicates that, the cost of its production is about $1.5 per kg by 2030 (for countries with eternal sunshine and huge unoccupied area) if several conservative measures are implemented.
  • Lack of Manufacturing and deployment of electrolysers: It will have to increase at an unprecedented rate by 2050 from the current capacity of 0.3 gigawatts to almost 5,000 gigawatts.
  • High cost of Storage system: Fuel cells which convert hydrogen fuel to usable energy for cars, are still expensive.
  • Poor Infrastructure: The hydrogen station infrastructure needed to refuel hydrogen fuel cell cars is still widely underdeveloped.

Way Forward

  • A massive investment in R&D and infrastructure for hydrogen production 
  • Investment in storage and transportation infrastructure and demand development.
  • Incentives for investment in this sector.
  • Mainstreaming other uses of hydrogen such as fuel cells, HCNG etc.
  • Accelerating the production of renewable energy as per the Paris Target. i.e., 500GW by 2030.

Northern plains of India is the most polluted region

Context: The University of Chicago has published the Air Quality Life Index (AQLI) report for 2023. AQLI data emphasises that ambient particulate pollution poses the world’s greatest external risk to human health.

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Major Highlights:

  • Data shows that failure to meet the World Health Organisation's guidelines on reducing PM2.5 (particulate matter) pollution to 5 μg/m3 would cut global life expectancy by 2.3 years. 
  • (Chart 1) South Asia is at the centre of the crisis.
    • According to AQLI data, from 2013 to 2021, particulate pollution in South Asia surged by 9.7%, which is estimated to reduce life expectancy in the region by an additional six months.
    • Bangladesh, India, Nepal, and Pakistan, where 22.9% of the global population lives, are the most polluted countries in the world.
  • (Chart 2) In India, the second-most polluted country (most polluted Bangladesh) in the world in 2021, particulate pollution is the greatest threat to human health.
    • Data reveal a further rise in PM2.5 pollution from 56.2 μg/m3 in 2020 to 58.7 μg/m3 in 2021, exceeding the WHO guidelines by more than 10 times. The average Indian resident is set to lose 5.3 years of life expectancy if WHO guidelines remain unmet. 
  • Chart 3 shows the most polluted States in India and the potential life expectancy loss if pollution levels do not meet WHO guidelines. In Delhi, the world’s most polluted city, 18 million people could lose 11.9 years of life expectancy relative to the WHO guideline and 8.5 years of life expectancy relative to the national guideline if current pollution levels persist.
    • The northern plains, home to over half a billion people and 38.9% of India’s population is the most polluted region. 
    • The northern plains include the States and Union Territories of Bihar, Chandigarh, Delhi, Haryana, Punjab, Uttar Pradesh, and West Bengal. 
  • Chart 4 shows the annual average PM2.5 concentrations in India, the northern plains, and all other regions. Pollution, once concentrated in the northern region, has spread to other parts of the country over the last two decades. All of the 521.2 million people living in the Northern Plains — 38.9 per cent of India’s population — live in areas where the annual average particulate pollution level is 17.3 times higher than the WHO guideline. 

Air Pollution:

  • Air pollution refers to the release of pollutants (a complex mixture of solid particles, liquid droplets, as well as gases) into the air which is detrimental to human health and the planet.
  • Major Pollutants:
  • Ozone (O3): Terrestrial O3 is created by the chemical reaction between oxides of nitrogen (NOx) and volatile organic compounds (when pollutants emitted by cars, power plants, refineries etc. chemically react in the presence of sunlight)
  • Nitrogen dioxide (NO2): emissions from motor vehicle exhaust, industrial facilities, and chemical solvents.
  • Carbon monoxide (CO): released on burning fuel containing carbon, such as wood, coal and petrol.
  • Sulfur dioxide (SO2): burning fossil fuels by power plants and other industrial facilities.
  • PM2.5 and PM10
  • Methane: landfills, waste, fossil fuel and agricultural industry.

Impacts of Air Pollution:

Air pollution is one of the biggest environmental threats to human health, alongside climate change

  • Human Health:
    • Decreased life expectancy due to severe diseases induced by air pollution. Every year, exposure to air pollution is estimated to cause 7 million premature deaths. In children, effects include reduced lung growth and function, respiratory infections and aggravated asthma. 
    • Developmental delay: New research has also shown an association between prenatal exposure to high levels of air pollution and developmental delay at age three, as well as psychological and behavioural problems later on, including symptoms of attention deficit hyperactivity disorder (ADHD), anxiety and depression.
  • Climate Change including global warming, acid rain, depletion of ozone layer etc.
  • Wildlife: Toxic chemicals present in the air can force wildlife species to move to new place and change their habitat.
  • Economy: Increasing healthcare costs, reducing productivity, environmental damage. As per World Air Quality Report 2022, Economic cost of air pollution to Indian economy is estimated to be more than US$150 billion per year.

Particulate Pollution:

  • Particulate pollutants are minute solid particles or liquid droplets in the air. These are present in Particulate Matter (PM 10, PM 2.5) is composed of a mixture of solids and liquids found in the air. 
  • Particulates in the atmosphere may be viable or non-viable.
    • Viable: They are minute living organisms that are dispersed in the atmosphere (e.g., bacteria, fungi, moulds, algae etc.)
    • Non-Viable: They are small solid or liquid particles suspended in the air that are not capable of reproducing or growing.
      • Smoke particulates from burning of fossil fuel, garbage etc.
      • Dust, Sand, pulverized coal, cement and fly ash from factories etc.
      • Mists produced by particles of spray liquids and by condensation of vapours in air.
      • Fumes by the condensation of vapours during sublimation, distillation, boiling and several other chemical reactions. E.g., Organic solvents, metals and metallic oxides form fume particles.
  • Particulate Matter (PM) 2.5 and PM 10 refer to different size categories of airborne particles that can have various impacts on human health and the environment.
    • PM10 (particles with a diameter of 10 micrometres or less) are small enough to pass through the throat and nose and enter the lungs. Once inhaled, these particles can affect the heart and lungs and cause serious health effects. Particles with a diameter of 10 microns or less, (≤ PM10) can penetrate and lodge deep inside the lungs.
    • PM2.5: The particles with a diameter of 2.5 microns or less, (≤ PM2.5) can penetrate the lung barrier and further enter the body through the bloodstream, affecting all major organs. PM2.5 can cause diseases both to our cardiovascular and respiratory systems, provoking, for example, stroke, lung cancer and chronic obstructive pulmonary disease (COPD). 

WHO’s Global Air Quality Guidelines:

  • The WHO Air quality guidelines are a set of evidence-based recommendations of limit values for specific air pollutants developed to help countries achieve air quality that protects public health.
  • In 2021, WHO released a revised Global Air Quality Guidelines announcing more stringent limits for six pollutant categories - particulate matter (PM), ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2) and carbon monoxide (CO). 
  • Although the guidelines are neither standards nor legally binding criteria, they are designed to offer guidance in reducing the health impacts of air pollution based on expert evaluation of current scientific evidence. 
  • The guidelines the stage for eventual shifts in policy in the government towards evolving newer stricter local and national air quality standards and will help countries in protecting health as well as mitigating global climate change.
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  • PM2.5: The upper limit of annual PM2.5 as per the 2005 standards is 10 micrograms per cubic metre. It has been revised to 5 micrograms per cubic metre. The 24-hour ceiling used to be 25 micrograms but has now dropped to 15. 
  • PM10: For PM10, the upper limit is 20 micrograms and has now been revised to 15 whereas the 24-hour value has been revised from 50 to 45 micrograms.

Impact of guidelines on India: 

  • The move does not immediately impact India as the National Ambient Air Quality Standards (NAAQS) do not meet the WHO’s existing standards. 
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  • The government has a dedicated National Clean Air Programme that aims for a 20% to 30% reduction in particulate matter concentrations by 2024 in 122 cities, keeping 2017 as the base year for the comparison of concentration.
  • India’s NAAQs — last revised in 2009 — specify an annual limit of 60 micrograms per cubic metre for PM 10 and 100 for a 24-hour period. Similarly, it is 40 for PM 2.5 annually and 60 for a 24-hour period. There are also standards for a host of chemical pollutants including sulphur dioxide, lead and nitrogen dioxide.

India’s Initiatives:

  • The Air (Prevention And Control Of Pollution) Act, 1981: The Act aims to control and prevent air pollution in India, and some of its main objectives are:
    • Prevent, control, and reduce air pollution.
    • Central Pollution Control Board (CPCB) and State Pollution Control Board (SPCB) were given the responsibility.
  • National Clean Air Programme (NCAP): It was launched in 2019, now renamed National Clear Air Mission is a long-term, time-bound, national level strategy to tackle the air pollution across the country comprehensively.
    • NCAP targets to achieve 20% to 30% reduction in PM10 and PM2.5 concentrations by 2024 keeping 2017 as the base year for the comparison of concentration.
    • 131 non-attainment cities mostly in Indo-Gangetic Plains have been identified based on ambient air quality data for the period 2011 – 2015 and WHO report 2014/2018. 
  • Commission for Air Quality Management: The Commission for Air Quality Management in the National Capital Region and adjoining areas 2020 — with a provision for a fine of Rs 1 crore and/or jail for 5 years for those violating air pollution norms.
  • Clean Air India Initiative to curb air pollution in Indian cities by promoting partnerships between Indian start-ups and build a network of entrepreneurs working on business solutions for cleaner air. Under it, an ‘INDUS impact’ project aims to halt the burning of paddy stubble by promoting businesses that “up cycle” it by using paddy straw as feedstock to make materials that would find use in construction and packaging.
  • Notification of National Ambient Air Quality Standards, National Air Quality Index and sector-specific emission and effluent standards for industries to reduce emission of PM 10, SO2 and oxide of nitrogen.
    • Air Quality Index (AQI):
      • AQI is an initiative of the Ministry of Environment Forest and Climate Change under Swachh Bharat Abhiyan.
      • National Air Quality Index was launched in 2014 as ‘One Number- One Color-One Description’ for the common man to judge the air quality within his vicinity.
      • The colour-coded index has six AQI categories, namely Good, Satisfactory, Moderately polluted, Poor, Very Poor, and Severe.
      • The index will measure eight major pollutants, namely, particulate matter (PM) 10, PM2.5, Ozone (O3), Sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), lead (Pb) and ammonia (NH3).
    • National Ambient Air Quality Standards (NAAQS)
      • Central Pollution Control Board (CPCB) has notified these standards under powers given to it under the Air (Prevention and Control of Pollution) Act, 1981.
      • It covers 12 pollutants: Sulphur Dioxide, Nitrogen Dioxide, PM-10, PM-2.5, Ozone, Lead, Carbon Monoxide, Ammonia, Benzene, Benzopyrene, Arsenic, Nickel.
  • Air Quality Early Warning System:
    • The initiative comes under the Ministry of Earth Sciences and Environment.
    • Air Quality Early Warning System for Delhi has been announced by the Central government that can alert, three days in advance, about the likelihood of extreme pollution events & dust storms.
    • The air pollution system has been developed jointly by Indian Institute of Tropical Meteorology (IITM), India Meteorological Department, National Centre for Medium Range Weather Forecasting (NCMRWF).
    • It intends for real time observations with 72-hour lead time of air quality over Delhi region.
    • It provides details about natural aerosols like dust from dust storms and particulate matter using different satellite data sets.
    • It will provide warning messages and Alerts to take necessary steps as per Graded Response Action Plan (GRAP).
  • Promotion of fuel standards: Leapfrogging from BS-I to BS-VI fuel and ban on pet coke and furnace oil.
    • Bharat Stage Norms (BS Norms) are rules that determine the maximum limit of pollutants vehicles (Including motor vehicles) can emit.
    • The standards, based on European regulations were first introduced in the year 2000.
    • 2020 – BS-VI has been introduced directly bypassing BS-V.
    • BS VI is expected to be the same as that of the Euro VI norms and will be declared by CPCB (Central Pollution Control Board) under the Ministry of Environment & Forests and Climate Change.
      • BS VI norms will cut down the presence of sulphur (in comparison to BS IV) from 50 ppm to 10 ppm (80%)
      • Implementation of BS VI will ensure cutting down harmful NOx (nitrogen oxides) from diesel cars by nearly 70%. In the petrol cars, they can be reduced by 25%.
      • Particulate matter like PM 2.5 and PM 10 are the most harmful components and the BS VI will bring down the cancer-causing particulate matter in diesel cars by a phenomenal 80%.
  • Swachh Vayu Survekshan: It has been conducted since 2016 and is the world’s largest urban sanitation and cleanliness survey. The primary goal of Swachh Survekshans is to encourage large-scale citizen participation and create awareness amongst all sections of society about the importance of working together towards making towns and cities better places to reside in.
    • It is conducted under the ambit of the Swachh Bharat Mission (Urban). Nodal Ministry: Ministry of Housing and Urban Affairs (MoHUA).
    • ‘Swachh Vayu Sarvekshan- Ranking of Cities’: The guidelines on ‘Swachh Vayu Sarvekshan- Ranking of Cities’ released under National Clean Air Program (NCAP).
    • Promotes ranking of 131 cities in the country for implementing City Action Plans prepared as part of NCAP for reducing air pollution up to 40% by 2025-26.
  • Subsidy to cooking fuel under Pradhan Mantri Ujjwala Yojana (PMUY) to dramatically expand access to clean energy, especially for rural households, to curb indoor pollution. 
  • Encouraging Alternatives: Promotion of public transport and network of metro, e-rickshaws, promotion of car-pooling, smog towers, etc.

Way Forward:

  • Need for a stronger mandate: NCAP is not legally binding, it will continue to be an advising programme. Legal support is needed not just to give state and local governments more enforceable mandates, but also to ensure inter-ministerial collaboration.
  • Need for Higher ambitions: India’s air pollution standards are more relaxed in comparison to WHO’s prescribed guidelines. The current NCAP goal levels would not result in breathing air quality in the country, since pollution levels are so high over most of the country. Thus, efforts are needed to make the guidelines more stringent with revised targets.
  • Air-shed approach: Need to adopt an air-shed approach to take measures to deal with air pollution. Under this approach, the policymakers will have to plan actions keeping in view topographical, climatic, and other common elements that contribute to air pollution in the region.