title: Ambient air quality and emission characteristics in and around a non-recovery type coke oven using high sulphur coal.
abstract: The objective of this study is to determine the concentrations of gaseous species and aerosols in and around a non-recovery type coke making oven using high sulphur coals. In this paper, physico-chemical properties of the feed coal sample are reported along with the collection and measurement of the emitted gases (SO2, NO2, and NH3) and aerosol particles (PM2.5, PM10) during the coal carbonization in the oven. The coals used are from northeast India and they are high sulphur in nature. The concentrations of the gases e.g., SO2, NO2 and NH3 emitted are observed to be within the limit of National Ambient Air Quality Standard for 24h. The mean PM10 and PM2.5 concentrations are found to be 125.4 μg/m(3) and 48.6 μg/m(3) respectively, as measured during three days of coke oven operations. About 99% of the SO2 in flue gases is captured by using an alkali treatment during the coke oven operation. A Principal Component Analysis (PCA) after Centred Log Ratio (clr) transformation is also performed to know the positive and negative correlation among the coal properties and the emission parameters.
authors.affiliation: Coal Chemistry Division, CSIR-Northeast Institute of Science & Technology, Jorhat 785006, India; Academy of Scientific and Innovative Research, New Delhi 110025, India.
authors.forename: Jyotilima
authors.initials: J
authors.lastname: Saikia
authors.affiliation: Coal Chemistry Division, CSIR-Northeast Institute of Science & Technology, Jorhat 785006, India.
authors.forename: Prasenjit
authors.initials: P
authors.lastname: Saikia
authors.affiliation: Department of Physics, Tezpur University, Tezpur 784008, India.
authors.forename: Ratan
authors.initials: R
authors.lastname: Boruah
authors.affiliation: Coal Chemistry Division, CSIR-Northeast Institute of Science & Technology, Jorhat 785006, India; Academy of Scientific and Innovative Research, New Delhi 110025, India. Electronic address: bksaikia@gmail.com.
authors.forename: Binoy K
authors.initials: BK
authors.lastname: Saikia
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data; D003031:Coal / Q000032:analysis; D000066428:Coal Industry; D003077:Coke; D004784:Environmental Monitoring; D007194:India; D013455:Sulfur / Q000032:analysis
chemical_list: D000393:Air Pollutants; D003031:Coal; D003077:Coke; D013455:Sulfur
keywords: Coal carbonization; Emissions from coke oven; High sulphur coals; Indian coals; Particulate matter (PM)