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RISS 인기검색어
- 검색키워드
- 저자 : Alfred Lawrence (검색결과 2 건)
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Tahmeena Khan,Alfred Lawrence,Samridhi Dwivedi,Saima Arif,Shrishti Dwivedi,Astha Upadhyay,Akriti Abraham,Venessa Roberts KOSAE·JSAE·CSES-CSAE 2022 Asian Journal of Atmospheric Environment (AJAE) Vol.16 No.3
The present study was conducted in Lucknow city to assess the impact of firecracker burning during Diwali, from 2 November 2021-6 November 2021 including the pre and post-Diwali days. The concentrations of PM<SUB>10</SUB>, PM<SUB>2.5</SUB>, SO₃, NO₂, CO, O₃, benzene and toluene, were monitored from the Central Pollution Control Board site on an hourly basis. The Air Quality Index was also recorded for PM<SUB>10</SUB>, PM<SUB>2.5</SUB>, SO₂ and NO₂. A questionnaire survey was done with 51 doctors to know the reported complaints post-Diwali. On Diwali night the PM<SUB>2.5</SUB> value reached 262 μg m<SUP>-3</SUP> around 22:00 hours and the maximum value (900 μg m<SUP>-3</SUP>) was obtained on 5 November, reported from the Central School monitoring station. From Gomti Nagar highest PM<SUB>2.5</SUB> value obtained on Diwali day was 538 μg m<SUP>-3</SUP> at 23:00 hours reaching 519 μg m<SUP>-3</SUP> post-Diwali. Areas belonging to the old part of the city witnessed higher variations as PM<SUB>2.5</SUB> crossed 900 μg m<SUP>-3</SUP>, in Lalbagh and Talkatora areas. The multivariate analysis showed that on Diwali night there was an increase of 204, 386, 344 and 341 in the PM<SUB>2.5</SUB> concentration reported from Gomtinagar, Central School, Talkatora and Lalbagh stations, showing that firecracker burning resulted in a significant increase in air pollution. The Toluene/Benzene ratio was mostly more than 1 indicating that toluene and benzene may be emitted from other sources as well including the mobile sources. Around 50-75% rise was seen in the number of patients post-Diwali. 57.1% of the reported cases had respiratory issues, followed by allergic reactions. The data obtained from Lalbagh, Talkatora and Central School showed that although the values remained high, a decreasing trend was seen in the AQI compared to previous years which is a good sign and may be attributed to public awareness and the ongoing pandemic making people conscious.
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A review on bauxite residue usage in air pollution control
Samridhi Dwivedi,Farheen Zehra,Neha Shukla,B. S. Rajanikanth,Alfred J. Lawrence 한국대기환경학회 2023 Asian Journal of Atmospheric Environment (AJAE) Vol.17 No.1
Exhausts or emission from industries/automobiles/indoor appliances is one of the most prominent sources of air pollution. Innumerable noxious gases have been identified and been recurrently treated through various technologies from past many decades. Cumulative studies suggest that air pollutants affect the respiratory and cardiovascular systems along with the central nervous system, may it be directly or indirectly. In particular, acquaintances to such air pollutants in early life can lead to developmental delays and may stunt neurological development. This review presents the recent technologies that have been tested at the laboratory level as well as in situ utilizing one of the abundantly available industrial wastes, i.e. red mud. Unlike the conventional expensive catalysts, red mud provides a cheaper alternative in the treatment of toxic exhaust gases from various sources. Furthermore, the review identifies the gap through which experts from other disciplines can explore the employment of red mud in the comprehensive spectrum of pollution control.
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