360° UPSC Mains Analysis

SC to hear plea seeking mandatory disclosure of ethanol content in petrol on August 31

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Flora & Fauna

Asian Elephant (Elephas maximus)
Status: Endangered
Threat: Expanding sugarcane cultivation (a key ethanol feedstock) near forest boundaries attracts elephants, leading to severe crop-raiding and escalating human-elephant conflict.
Bengal Tiger (Panthera tigris tigris)
Status: Endangered
Threat: Dense sugarcane fields in regions like the Terai landscape (e.g., Pilibhit) mimic natural grasslands, drawing tigers into agricultural areas and increasing human-wildlife conflict.

Ecology Impact

Intensive cultivation of water-guzzling feedstock like sugarcane and maize for ethanol production can lead to land-use changes, soil degradation, and depletion of local water tables. This indirectly threatens fragile ecosystems and biodiversity in agricultural belts due to habitat fragmentation and chemical runoff.

Science & Tech Angle

The science of ethanol blending involves the chemical properties of anhydrous ethanol (C2H5OH) mixed with motor spirit (petrol). High-blend fuels like E20 require material compatibility adjustments in engines to prevent corrosion of elastomers and metals. Additionally, the air-fuel ratio must be optimized due to ethanol's lower energy density compared to pure gasoline.

Climate Change Link

Ethanol blending (E20) is a key pillar of India's Nationally Determined Contributions (NDCs) to reduce greenhouse gas emissions and achieve net-zero by 2070. However, the net carbon reduction must account for life-cycle emissions, including land-use change and intensive agricultural inputs. A transparent transition framework is essential to balance climate mitigation with ecological sustainability.

Sustainable Development

Directly links to SDG 7 (Affordable and Clean Energy) and SDG 13 (Climate Action) by promoting renewable energy alternatives. However, it poses challenges to SDG 2 (Zero Hunger) and SDG 6 (Clean Water and Sanitation) due to the diversion of food crops for fuel and the high water footprint of feedstock cultivation. Balancing these goals is crucial for a sustainable green economy.

International Frameworks

United Nations Framework Convention on Climate Change (UNFCCC)
Aligns with India's commitment under the Paris Agreement to reduce the emissions intensity of its GDP by 45% by 2030 compared to 2005 levels.
Global Biofuels Alliance (GBA)
Launched during India's G20 Presidency in 2023 to facilitate collaboration and secure the supply of biofuels, promoting E20 and other sustainable fuel standards globally.

Sources consulted

AI-generated study aid. Grounded in web research, but verify critical facts against official sources before your exam.

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