| Title: | "Emission, dispersion, and potential risk of volatile organic and odorous compounds in the exhaust gas from two sludge thermal drying processes" |
| Author(s): | Xue S; Ding W; Li L; Ma J; Chai F; Liu J; |
| Address: | "State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China. Powerchina Road Bridge Group Co., Ltd., 16-18th Floor, Block B, Haifu International, No. 22, Chegongzhuang West Road, Haidian District, Beijing, China. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, China. Electronic address: leel@rcees.ac.cn. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China" |
| DOI: | 10.1016/j.wasman.2021.11.040 |
| ISSN/ISBN: | 1879-2456 (Electronic) 0956-053X (Linking) |
| Abstract: | "Emissions of odorous and volatile organic compounds (VOCs) were investigated between two sludge drying methods. A total of 37 chemical compounds were identified and quantified from the off-gases from sludge drying by indirect drying method. The total number of VOCs detected ranged from 3.45 x 10(-3) to 4.53 mg/m(3), which includes benzene series, volatile organic sulfur, and nitrogenous organic compounds. High emissions were found in the exhaust gas released from drying workshop that used direct drying method. Sulfur dioxide, aromatics, and chlorinated compounds were dominant. Based on the olfactory effect analysis and cancer risk assessment, the main odor-causing gaseous pollutants were methyl mercaptan and methyl sulfide (for indirect sludge drying process) and SO(2) (for direct sludge drying process), while the dominant carcinogens were benzene, carbon tetrachloride, chloroform, and methylene. This study provides new insights into the emission characteristics, olfactory effects, and cancer risks of VOCs and odorous compounds in the exhaust gas from thermal sludge drying processes" |
| Keywords: | *Air Pollutants/analysis Desiccation Odorants/analysis Sewage/analysis Sulfur Dioxide *Volatile Organic Compounds/analysis Cancer risk assessment Odorous compounds Olfactory effect analysis Volatile organic compounds; |
| Notes: | "MedlineXue, Song Ding, Wenjie Li, Lin Ma, Jiawei Chai, Fengguang Liu, Junxin eng 2021/12/08 Waste Manag. 2022 Feb 1; 138:116-124. doi: 10.1016/j.wasman.2021.11.040. Epub 2021 Dec 4" |
