-The Hindu Inadequate management of pyrolysis technique by-products poses health risks The Central Pollution Control Board (CPCB) has pulled up 270 tyre pyrolysis units in 19 States for employing technology that is polluting and harmful to the health of workers employed. Tyre pyrolysis refers to a technique of breaking down used tyres in the absence of oxygen. Shredded tyres, at temperatures between 250º C and 500º C, produce liquid oil and gases. While this...
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The truth about air pollution in Delhi -Chandra Bhushan
-Financial Express There is an irony being played out in Delhi. While the national capital is reeling under one of its worst spells of air pollution, the Delhi government is bringing out a series of advertisements claiming that the pollution levels are down by 25%. The advertisements mention that the levels of PM 2.5—particulate matter of size less than 2.5 microns—have reduced from 154 microgrammes per cubic meter (µg/m3) during 2012-2014 to...
More »Delhi's air pollution is down by 25%, need is to reduce another 65%
-Down to Earth Enforcement of graded response action plan on pollution hotspots in the national capital can help achieve clean air Delhi has, in the last 10 years, made visible strides in ameliorating its air quality. Director General of Centre for Science and Environment (CSE) Sunita Narain and Anumita Roychowdhury, executive director and head of the air pollution and clean transportation programme at CSE discuss how this was achieved and how to bring...
More »Images from Nasa reveal crop burning the reason behind increase in Delhi pollution -Kumar Kunal
-IndiaToday.in An AQI between 0 and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'. * Nasa showed fire incidents occurring in the North-western region of India and adjoining regions in Pakistan * The fire incidents are likely due to crop burning in the area * The overall Air Quality Index (AQI) in Delhi touched the 301...
More »Advanced air pollution warning system to predict stubble burning areas near Delhi -Shagun Kapil
-Down to Earth The system, which tracks crop burning using satellite data, can also forecast air pollution levels for next 72 hours The Union Ministry of Earth Sciences (MoES) has launched an advanced Air Quality Early Warning System, which can predict places neighbouring Delhi that are likely to burn crop residue on a given day. The system, developed by Indian Institute of Tropical Meteorology, Pune, under MoES, uses data of stubble burning incidents...
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