Pollutant emissions from road vehicles in megacity Kolkata, India: past and present trends
Nagpure, AK, Gurjar, BR, Sahni, N and Kumar, P (2010) Pollutant emissions from road vehicles in megacity Kolkata, India: past and present trends Indian Journal of Air Pollution Control, 10 (2). 18 - 30. ISSN 0250-5231
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Road vehicles are major sources of air pollutants in urban areas. Their impact on air quality is very large in rapidly growing megacities like Kolkata (India). The aim of this study is to estimate the contribution of road vehicles towards various pollutants (e.g. CO2, CO, NOx, SPM, SO2 and VOCs) in Kolkata between 2000 and 2010. Two scenarios considering phasing out and non-phasing out of vehicles after their serving age are considered. Distinguishable higher emissions were observed in emissions for non-phasing out scenario compared to phasing out scenario. It has been further observed that CO and VOC emissions were dominated by four wheeler petrol vehicles, while other pollutants were dominated by commercial diesel vehicles in both the scenarios. Emission estimates for the year 2010 suggest a large increase in the phasing out scenario considering continuous phasing out of old vehicles and maintaining same growth trends of vehicle population, while during the same year emissions from non–phasing out scenario appear to decrease due to automatic retirement of old vehicles and introduction of advanced technology. The study concludes that external traffic load should be bypassed from the city as it contributes considerably to the city pollution load. Also, the implementation of the phasing out laws for old vehicles should be effectively carried out to control the pollution load due to traffic.
|Divisions:||Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering|
|Depositing User:||Symplectic Elements|
|Date Deposited:||04 Aug 2011 09:19|
|Last Modified:||23 Sep 2013 18:43|
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