LAPSE:2023.1513
Published Article
LAPSE:2023.1513
Study on Gaseous Chlorobenzene Treatment by a Bio-Trickling Filter: Degradation Mechanism and Microbial Community
February 21, 2023
Abstract
Large-flow waste gas generated from the pharmaceutical and chemical industry usually contains low concentrations of VOCs (volatile organic compounds), and it is also the key factor that presents challenges in terms of disposal. To date, due to the limitations of mass transfer rate and microbial degradation ability, the degradation performance of VOCs using the biological method has not been ideal. Therefore, in this study, the sludge from a chlorobenzene-containing wastewater treatment plant was inoculated into our experimental bio-trickling filter (BTF) to explore the feasibility of domestication and degradation of gaseous chlorobenzene by highly active microorganisms. The kinetics of its mass transfer reaction and microbial community dynamics were also discussed. Moreover, the main process parameters of BTF for chlorobenzene degradation were optimized. The results showed that the degradation effect of chlorobenzene reached more than 85% at an inlet concentration of chlorobenzene 700 mg·m−3, oxygen concentration of 10%, and an empty bed retention time (EBRT) of 80 s. The mass transfer kinetic analysis indicated that the process of chlorobenzene degradation in the BTF occurred between the zero-stage reaction and the first-stage reaction. This BTF contributed significantly to the biodegradability of chlorobenzene, overcoming the limitation of gas-to-liquid/solid mass transfer of chlorobenzene. The analysis of the species diversity showed that Thermomonas, Petrimona, Comana, and Ottowia were typical organic-matter-degrading bacteria that degraded chlorobenzene efficiently with xylene present.
Large-flow waste gas generated from the pharmaceutical and chemical industry usually contains low concentrations of VOCs (volatile organic compounds), and it is also the key factor that presents challenges in terms of disposal. To date, due to the limitations of mass transfer rate and microbial degradation ability, the degradation performance of VOCs using the biological method has not been ideal. Therefore, in this study, the sludge from a chlorobenzene-containing wastewater treatment plant was inoculated into our experimental bio-trickling filter (BTF) to explore the feasibility of domestication and degradation of gaseous chlorobenzene by highly active microorganisms. The kinetics of its mass transfer reaction and microbial community dynamics were also discussed. Moreover, the main process parameters of BTF for chlorobenzene degradation were optimized. The results showed that the degradation effect of chlorobenzene reached more than 85% at an inlet concentration of chlorobenzene 700 mg·m−3, oxygen concentration of 10%, and an empty bed retention time (EBRT) of 80 s. The mass transfer kinetic analysis indicated that the process of chlorobenzene degradation in the BTF occurred between the zero-stage reaction and the first-stage reaction. This BTF contributed significantly to the biodegradability of chlorobenzene, overcoming the limitation of gas-to-liquid/solid mass transfer of chlorobenzene. The analysis of the species diversity showed that Thermomonas, Petrimona, Comana, and Ottowia were typical organic-matter-degrading bacteria that degraded chlorobenzene efficiently with xylene present.
Record ID
Keywords
bio-trickling filter, chlorobenzene, mass transfer kinetics, microbial communities, pharmaceutical and chemical industry
Subject
Suggested Citation
Liu N, Lv JL, Cai YL, Yao YY, Zhang K, Ma C, Li JX, Ren XY, Hu JJ, Zhao JH. Study on Gaseous Chlorobenzene Treatment by a Bio-Trickling Filter: Degradation Mechanism and Microbial Community. (2023). LAPSE:2023.1513
Author Affiliations
Liu N: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Lv JL: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Cai YL: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Yao YY: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Zhang K: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Ma C: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Li JX: Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 200120, China; University of Chinese Academy of Sciences, Beijing 100049, China
Ren XY: Zhejiang Environment Technology Co., Ltd., Hangzhou 310000, China
Hu JJ: Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200444, China
Zhao JH: Henan Radio & Television University, Zhengzhou 450001, China
Lv JL: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Cai YL: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Yao YY: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Zhang K: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Ma C: Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
Li JX: Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 200120, China; University of Chinese Academy of Sciences, Beijing 100049, China
Ren XY: Zhejiang Environment Technology Co., Ltd., Hangzhou 310000, China
Hu JJ: Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200444, China
Zhao JH: Henan Radio & Television University, Zhengzhou 450001, China
Journal Name
Processes
Volume
10
Issue
8
First Page
1483
Year
2022
Publication Date
2022-07-28
ISSN
2227-9717
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Original Submission
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PII: pr10081483, Publication Type: Journal Article
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LAPSE:2023.1513
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https://doi.org/10.3390/pr10081483
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Feb 21, 2023
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