Monday, January 13, 2014

Air Pollution

1. Examples of recent incidence (Case Study):

* Forest fire in Indonesias Sumatra Is. (June,2013)

* Blame on land clearing operations by plantation owners & accidental peat fire

* Residents to live indoors as haze from forest fire reach unhealthy levels

* Cases of respiratory infection on the rise

* Pollutant index shot up to 293

* Above 200 is considered very unhealthy

* Singapore & malaysia too badly affected

* Singapore: air pollution level reached harzardous mark for the first time in the countrys history

* Malaysia: haze cover in kaula Lampur

* Intense smog in Chinese cities, Jan 2013

* Prompted govt. to pledge fresh emission curbs

* Suspend work in 58 factories

* Prompted public outcry

* Criticism of Chinas growth policy

* PM2.5

* Air-borne particulate matter with a dia of 2.5 microns or less

* WHO: above 100 g/m3 is unhealthy for sensitive groups

* 993 in Beijing

* Air Quality Index: reached 500

* Cancer mortality rates on the rise in China

* Lung cancer no.1 major cause

* Lung problems related to air pollution

* Fourth Highest Mortility rate: Respiratory disease, to a big extent related to air quality

* Effect on Tourism:

* One of the most visited countries in the world

* Worlds no. 3 destination for international travel after France & US

* Sharply fewer tourist this year

* Partly due to air pollution

* Following Januarys eye-shearing levels of smog

2. Emissions from coal-fired power plants

* Taking a heavy toll on human life across large parts of India

* Premature death & asthma cases from exposure to PM10

* 2011-12: 111 coal-fired power plants with total generation capacity of 121 GW huge quantum of PM2.5, SO2,Nox, CO, VOCs, CO2

* Huge burden on health cost

* Largest impact in Delhi, Harayana,Maharashtra, MP, Chattisgarh, Indo-gangetic plain, central-east India

3. Indoor Pollution

* Cooking & heating with solid fuels- coal, wood, dung, farm residue- continues across the globe

* 70% people India use these fuels

* 75% in rural

* 22% in urban

* 80% of household energy consumption in India

* Inefficient burning- mix of pollutants, primarily CO & particulate matters

* WHO,2009: 2 million death

* Worst hit:

* poorstay-at-home women & children

* SEA & SubSaharan Africa

* GOIs Action

* Several initiatives in the past to develop, produce & distribute improved cookstove or chulhas throughout rural India

* National Program on Improved Chulhas (NPIC) by the Min. of New & Renewable Energy

* These initiatives unable to deliver promises
4. WtE (Waste to Energy) Incineration

* Touted as answer to municipal waste accumulation

* Emit toxic gases-volatile organic gases & heavy metals

* Among the top five emission of dioxins worldwide

* incinerators in Okhla, New Delhi:

* Air samples around : life threatening levels of particulates & toxic chemicals

* Residents around: evidence of linking incidence of cancer & low birth-weight to incinerator emission

* Power generation through mixed waste generation fails

* energy recovery from urban & industrial waste of the MNREs flagship program (to generate 84MW of power from waste) fails to contribute even a single unit of power to the grid

* For energy generation, incinerators are very expensive & inefficient

* Not climate-friendly:

* USEP: incinerator releases 2.5 more CO2/MW than coalfired power plants

* Europe committed to ending of landfilling & incineration of recycleble waste by 2020
5. Dioxins

* one of Persistent Organic Pollutants (POPs) that causes cancer even in low dose

* Insoluble in water

* When settled on land/water bodies, absorbed by terrestrial & aquatic vegetation

* Travel up the food chain to animals & fish, to man

* Living organisms cannot metabolise them

* Present in high conc. In milk, egg, meat

* In humans, impairs the functioning of liver, immune & reproductive system & cause cancer

* US Env.Protection Agency in 1994: most poisonous substances known to man

* Finland: govt. shut down an incineration plant when dioxin level in surrounding vegetation was found high

* Delhi govt. continues despite dioxin & furan levels high
6. Way out to garbage problem- Gasification

* Incomplete combustion of organic matter with the release of CO & H2 instead of CO2 found in usual combustion
easily synthesized into dimethyl ether, a superior diesel substitute & a complete substitute for LPG

* Eliminates dioxin threat

* High temperature breaks down dioxin & furan into their basic elements

* Cities & municipal corporations around the world begun to switch to gasification

* Prospect of Gasification in India

* Rising no. of Indians living in cities growing garbage generation

* Volume of transport fuel that can be replaced

* Saving in foreign exchange (reducing oil import)

* Free domestic prices from the yoke of international oil prices

* Save fuel subsidies







Submitted by:
MOIRANGTHEM REAGAN SINGH