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Wu Z, Cao X, Li M, Liu J, Li B. Treatment of volatile organic compounds and other waste gases using membrane biofilm reactors: A review on recent advancements and challenges. CHEMOSPHERE 2024; 349:140843. [PMID: 38043611 DOI: 10.1016/j.chemosphere.2023.140843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/18/2023] [Accepted: 11/27/2023] [Indexed: 12/05/2023]
Abstract
This article provides a comprehensive review of membrane biofilm reactors for waste gas (MBRWG) treatment, focusing on studies conducted since 2000. The first section discusses the membrane materials, structure, and mass transfer mechanism employed in MBRWG. The concept of a partial counter-diffusion biofilm in MBRWG is introduced, with identification of the most metabolically active region. Subsequently, the effectiveness of these biofilm reactors in treating single and mixed pollutants is examined. The phenomenon of membrane fouling in MBRWG is characterized, alongside an analysis of contributory factors. Furthermore, a comparison is made between membrane biofilm reactors and conventional biological treatment technologies, highlighting their respective advantages and disadvantages. It is evident that the treatment of hydrophobic gases and their resistance to volatility warrant further investigation. In addition, the emergence of the smart industry and its integration with other processes have opened up new opportunities for the utilization of MBRWG. Overcoming membrane fouling and developing stable and cost-effective membrane materials are essential factors for successful engineering applications of MBRWG. Moreover, it is worth exploring the mechanisms of co-metabolism in MBRWG and the potential for altering biofilm community structures.
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Affiliation(s)
- Ziqing Wu
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China; Carbon Neutrality Interdisciplinary Science Centre, Nankai University, Tianjin, 300350, China
| | - Xiwei Cao
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China; Carbon Neutrality Interdisciplinary Science Centre, Nankai University, Tianjin, 300350, China
| | - Ming Li
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China; Carbon Neutrality Interdisciplinary Science Centre, Nankai University, Tianjin, 300350, China
| | - Jun Liu
- School of Marine Science and Engineering, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China
| | - Baoan Li
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China; Carbon Neutrality Interdisciplinary Science Centre, Nankai University, Tianjin, 300350, China.
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González-Martín J, Cantera S, Muñoz R, Lebrero R. Indoor air VOCs biofiltration by bioactive coating packed bed bioreactors. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119362. [PMID: 37897901 DOI: 10.1016/j.jenvman.2023.119362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/29/2023] [Accepted: 10/14/2023] [Indexed: 10/30/2023]
Abstract
Bioactive coatings are envisaged as a promising biotechnology to tackle the emerging problem of indoor air pollution. This solution could cope with the low concentrations, the wide range of compounds and the hydrophobicity of some indoor air VOCs, which are the most important bottlenecks regarding the implementation of conventional biotechnologies for indoor air treatment. A bioactive coating-based bioreactor was tested in this study for the abatement of different VOCs (n-hexane, toluene and α-pinene) at different empty bed residence times (EBRT) and inlet VOC concentrations. The performance of this reactor was compared with a conventional biofilm-based bioreactor operated with the same microbial inoculum. After an acclimation period, the bioactive coating-based bioreactor achieved abatements of over 50% for hexane, 80% for toluene and 70% for pinene at EBRTs of 112-56 s and inlet concentrations of 9-15 mg m-3. These results were about 25, 10 and 20% lower than the highest removals recorded in the biofilm-based bioreactor. Both bioreactors experienced a decrease in VOC abatement by ∼25% for hexane, 45% for toluene and 40% for pinene, after reducing the EBRT to 28 s. When inlet VOC concentrations were progressively reduced, VOC abatement efficiencies did not improve. This fact suggested that low EBRTs and low inlet VOCs concentration hindered indoor air pollutant abatement as a result of a limited mass transfer and bioavailability. Metagenomic analyses showed that process operation with toluene, hexane and pinene as the only carbon and energy sources favored an enriched bacterial community represented by the genera Devosia, Mesorhizobium, Sphingobacterium and Mycobacterium, regardless of the bioreactor configuration. Bioactive coatings were used in this work as packing material of a conventional bioreactor, achieving satisfactory VOC abatement similar to a conventional bioreactor.
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Affiliation(s)
- Javier González-Martín
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina S/n., Valladolid, 47011, Spain; Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina S/n., Valladolid, 47011, Spain.
| | - Sara Cantera
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708, WE Wageningen, the Netherlands.
| | - Raúl Muñoz
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina S/n., Valladolid, 47011, Spain; Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina S/n., Valladolid, 47011, Spain.
| | - Raquel Lebrero
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina S/n., Valladolid, 47011, Spain; Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina S/n., Valladolid, 47011, Spain.
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Liu S, Gao PF, Li S, Fu H, Wang L, Dai Y, Fu M. A review of the recent progress in biotrickling filters: packing materials, gases, micro-organisms, and CFD. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:125398-125416. [PMID: 38012483 DOI: 10.1007/s11356-023-31004-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023]
Abstract
Organic pollutants in the air have serious consequences on both human health and the environment. Among the various methods for removing organic pollution gas, biotrickling filters (BTFs) are becoming more and more popular due to their cost-effective advantages. BTF can effectively degrade organic pollutants without producing secondary pollutants. In the current research on the removal of organic pollutants by BTF, improving the performance of BTF has always been a research hotspot. Researchers have conducted studies from different aspects to improve the removal performance of BTF for organic pollutants. Including research on the performance of BTF using different packing materials, research on the removal of various mixed pollutant gases by BTF, research on microbial communities in BTF, and other studies that can improve the performance of BTF. Moreover, computational fluid dynamics (CFD) was introduced to study the microscopic process of BTF removal of organic pollutants. CFD is a simulation tool widely used in aerospace, automotive, and industrial production. In the study of BTF removal of organic pollutants, CFD can simulate the fluid movement, mass transfer process, and biodegradation process in BTF in a visual way. This review will summarize the development of BTFs from four aspects: packing materials, mixed gases, micro-organisms, and CFD, in order to provide a reference and direction for the future optimization of BTFs.
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Affiliation(s)
- Shuaihao Liu
- College of Environmental Science & Engineering, Xiamen University of Technology, Xiamen, 361024, China
| | - Pan-Feng Gao
- College of Environmental Science & Engineering, Xiamen University of Technology, Xiamen, 361024, China.
| | - Shubiao Li
- Xiamen Lian Chuang Dar Technology Co., Ltd., Xiamen, 361000, China
| | - Haiyan Fu
- College of Environmental Science & Engineering, Xiamen University of Technology, Xiamen, 361024, China
| | - Liyong Wang
- College of Environmental Science & Engineering, Xiamen University of Technology, Xiamen, 361024, China
| | - Yuan Dai
- College of Environmental Science & Engineering, Xiamen University of Technology, Xiamen, 361024, China
| | - Muxing Fu
- College of Environmental Science & Engineering, Xiamen University of Technology, Xiamen, 361024, China
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Wang Q, Lin Y, Peng L, Wang Y, Ma S, Ren H, Xu K. Weak magnetic field enhances waste molasses-driven denitrification during wastewater treatment. BIORESOURCE TECHNOLOGY 2023; 387:129697. [PMID: 37598801 DOI: 10.1016/j.biortech.2023.129697] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/13/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Waste molasses, the abundant byproducts of the sugar industry, is a cost-efficient carbon source for advanced denitrification. However, the efficiency of waste molasses-driven denitrification is limited by its complex carbon content, hindering its practical application. Weak magnetic field (WMF) is reported to enhance biological nitrogen removal, but its effects on molasses-driven denitrification remains unknown. This study investigated whether the WMF can enhance waste molasses-driven nitrogen removal and explore the underlying mechanisms. It was found that WMF significantly facilitated waste molasses-driven denitrification, with total nitrogen removal efficiency increased by 1.25 times (from 77% to 96%). WMF stimulated the nitrate reductase's activity by 7-18%, and the enhancement was improved as WMF intensified. Quantitative qPCR analysis indicated that the abundances of denitrifying enzymes increased under WMF, which was consistent with the proliferation of denitrifying bacteria Denitratisoma and Devosia. This study has demonstrated that WMF is promising for enhancing complex carbon-driven denitrification processes.
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Affiliation(s)
- Qingxin Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Yuan Lin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Ling Peng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Yanru Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Sijia Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Ke Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China.
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Wu N, Zhang Q, Tan B, Su J, Feng J, Zhang Y, He J, Li M, He Q. Understanding the impacts of intermittent electro field on the bioelectrochemical aniline degradation system: Performance, microbial community and functional enzyme. ENVIRONMENTAL RESEARCH 2023; 231:116039. [PMID: 37142079 DOI: 10.1016/j.envres.2023.116039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/06/2023]
Abstract
On account of the lack of a sustainable electron donor source and the inhibitory effect of aniline on denitrogenation make it tough to achieve simultaneous removal of aniline and nitrogen. Herein, the strategy of adjusting electric field mode was applied to the electro-enhanced sequential batch reactors (E-SBRs: R1 (continuous ON), R2 (2 h-ON/2 h-OFF), R3 (12 h-ON/12 h-OFF), R4 (in the aerobic phase ON), R5 (in the anoxic phase ON)) to treat aniline wastewater. Aniline removal rate reached approximately 99% in the five systems. Decreasing electrical stimulation interval from 12 to 2 h significantly improved the electron utilization efficiency for aniline degradation and nitrogen metabolism. The total nitrogen removal was achieved from 70.31% to 75.63%. Meanwhile, the hydrogenotrophic denitrifiers of Hydrogenophaga, Thauera, and Rhodospirillales, enriched in reactors of minor electrical stimulation interval. Accordingly, the expression of functional enzyme related to electron transport was incremental with the proper electrical stimulation frequency.
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Affiliation(s)
- Nanping Wu
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Qian Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China.
| | - Bin Tan
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Junhao Su
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Jiapeng Feng
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China; China Engineering Corporation, Changsha, 410000, China
| | - Yunjie Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Jing He
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Meng Li
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Hainan, 572024, China
| | - Qi He
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
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Zhang Y, Tong Y, Wang K, Liang Q, Liu J, Zhang X, Ji X, Gao J, Zuo P, Dan M. Application of loofah and insects in a bio-trickling filter to relieve clogging. CHEMOSPHERE 2023; 317:137912. [PMID: 36681198 DOI: 10.1016/j.chemosphere.2023.137912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 06/17/2023]
Abstract
Bio-trickling filters (BTFs) use an inert filler to purify pollutants making them prone to clogging due to bacterial accumulation. To investigate the performance of a non-inert filler in BTF and its cooperation with insects to relieve clogging, a vertical BTF was constructed with a loofah/Pall ring/polydimethylsiloxane composite filler and selected bacteria to purify toluene. The BTF was started up within 17 d and restarted within 3 d after starvation for 12-16 d. Its average removal efficiency was >90% at steady state. The maximum elimination capacity of 86.4 g·(m3·h)-1 was obtained at a volume capacity of 96.2 g·(m3·h)-1. The introduction of holometabolous insects (Clogmia albipunctata) rapidly removed the biofilm and accelerated the degradation of the loofah, which alleviated clogging. Furthermore, confocal laser scanning microscope (CLSM) observations showed that the biofilm polysaccharides were difficult to remove, while lipids were readily lost. Analysis of microbial diversity over time and space revealed that the dominant bacterium, Comamonas, was replaced by diverse microflora with no obvious dominant genus. Insect introduction and loofah migration had little effect on the evolution of microflora. This study provides a promising approach to operating BTFs with less clogging.
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Affiliation(s)
- Yun Zhang
- Institute of Energy and Environmental Protection, Academy of Agricultural Planning & Engineering, Ministry of Agriculture and Rural Affairs, Beijing, 100125, China
| | - Yali Tong
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Kun Wang
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Quanming Liang
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Jieyu Liu
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Xiaoxi Zhang
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Xiaohui Ji
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
| | - Jiajia Gao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Penglai Zuo
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China.
| | - Mo Dan
- Centre of Air Pollution Control and Carbon Neutrality, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, 100054, China
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Giang HM, Huyen Nga NT, Rene ER, Ha HN, Varjani S. Performance and neural modeling of a compost-based biofilter treating a gas-phase mixture of benzene and xylene. ENVIRONMENTAL RESEARCH 2023; 217:114788. [PMID: 36403652 DOI: 10.1016/j.envres.2022.114788] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/26/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Biofilter (BF) has been regarded as a versatile gas treatment technology for removing volatile organic compounds (VOCs) from contaminated gas streams. In order for BF to be utilized in the industrial setting, it is essential to conduct research aimed at removing VOC mixtures under different inlet loading conditions, i.e. as a function of the gas flow rate and inlet VOC concentrations. The main aim of this study was to apply artificial neural networks (ANN) and determine the relationship between flow rate (FR), pressure drop (PD), inlet concentration (C), and removal efficiency (RE) in the BF treating gas-phase benzene and xylene mixtures. The ANN model was trained and tested to assess the removal efficiency of benzene (REB) and xylene (REX) under the influence of different FR, PD and C. The model's performance was assessed using a cross-validation method. The REb varied from 20% to >60%, while the REx varied from 10% to 70% during the different experimental phases of BF operation. The causal index (CI) technique was used to determine the sensitivity of the input parameters on the output variables. The ANN model with a topology of 4-4-2 performed the best in terms of predicting the RE profiles of both the pollutants. Furthermore, the effect was more pronounced for xylene because an increase in the benzene concentration reduced xylene removal (CI = -25.7170) more severely than benzene removal. An increase in the xylene concentration had a marginally positive effect on the benzene removal (CI = +0.1178).
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Affiliation(s)
- Hoang Minh Giang
- Faculty of Environmental Engineering, Hanoi University of Civil Engineering, 55 Giai Phong Road, Hai Ba Trung District, Hanoi, 113021, Viet Nam.
| | - Nguyen Thi Huyen Nga
- Faculty of Environmental Engineering, Hanoi University of Civil Engineering, 55 Giai Phong Road, Hai Ba Trung District, Hanoi, 113021, Viet Nam
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Hoang Ngoc Ha
- Faculty of Environmental Engineering, Hanoi University of Civil Engineering, 55 Giai Phong Road, Hai Ba Trung District, Hanoi, 113021, Viet Nam
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat, 382 010, India
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Hao Y, Sun Y, Li M, Fang X, Wang Z, Zuo J, Zhang C. Adverse effects of polystyrene microplastics in the freshwater commercial fish, grass carp (Ctenopharyngodon idella): Emphasis on physiological response and intestinal microbiome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159270. [PMID: 36208741 DOI: 10.1016/j.scitotenv.2022.159270] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/01/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Microplastics (MPs) pollution in aquatic environment has attracted global attention in recent years. To evaluate the potential toxic effects of MPs in freshwater cultured fish, grass carps (Ctenopharyngodon idella) (body length: 7.7 ± 0.1 cm, wet weight: 6.28 ± 0.23 g) were exposed to different sizes (0.5 μm, 15 μm) and concentrations (100 μg/L, 500 μg/L) of polystyrene microplastics (PS-MPs) suspension for 7 and 14 days, followed by 7 days of depuration, detecting the variations in growth rate, histological structure, oxidative response and intestinal microbiome. Our results indicate that MP toxicity elicited significant size- and concentration-dependent responses by grass carp. MP exposure caused obvious decrease in growth rate on day 14 but not on day 7. Additionally, MPs with large size and high concentration caused more severe intestinal damage and less weight gain, while MP particles with small size and high concentration induced more severe liver congestion and stronger oxidative stress. MP exposure dramatically shifted the gut microbial composition, with the top 10 genera in abundance being associated with the diameter and concentration of the MPs. After 7 days of depuration, only superoxide dismutase and malondialdehyde in liver, showed a tendency to recover to the initial values. Even though the differences in the gut microbial community between the control and treatment groups disappeared, and the proportion of potential pathogenic bacteria in intestine was still high. Thus, it is clear that a short-term depuration period of 7 days is not enough for complete normalization.
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Affiliation(s)
- Yaotong Hao
- Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China
| | - Yanfeng Sun
- Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China.
| | - Mo Li
- Life Sciences College, Cangzhou Normal University, Cangzhou 061001, China
| | - Xuedan Fang
- Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China
| | - Zhikui Wang
- Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China
| | - Jiulong Zuo
- Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China
| | - Cuiyun Zhang
- Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China
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Yang K, Wang W, Li L. Dechlorination of dichloromethane by a biofilter enriched with electroactive bacteria: Performance, kinetics, and microbial community. ENVIRONMENTAL RESEARCH 2022; 215:114247. [PMID: 36058274 DOI: 10.1016/j.envres.2022.114247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/18/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Dichloromethane (DCM) is a recalcitrant volatile organic compound that exhibits biological toxicity and bioaccumulation. In this study, gaseous DCM was removed using an electroactive bacterial biofilter (EBB) with graphite rod as the anode and carbon felt as the cathode. The highest removal efficiency (97.09%) was achieved at a cathodic potential of -600 mV (vs. Ag/AgCl). The EBB had a maximum elimination capacity of 79.29 g m-3 h-1 when the inlet load was 96.48 g m-3 h-1. There was no substrate inhibition phenomenon observed in the EBB, and the Michaelis-Menten model was used to describe the kinetics of the EBB. High-throughput sequencing indicated that electroactive genera such as Rhodanobacter sp., Sphingomonas sp., Pseudomonas sp., Chryseobacterium sp., Pseudochrobactrum sp., and Mycobacterium sp. dominated the EBB. The microbial communities were stable and were slightly affected by the DCM inlet concentration. The results can be applied for the effective treatment of recalcitrant volatile organic compounds (VOCs).
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Affiliation(s)
- Kaixiong Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Environment Research Institute, Shandong University, Qingdao, 266237, China.
| | - Wenwen Wang
- 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.
| | - Lin Li
- 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; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
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Yang B, Wang J, Wu M, Shang Q, Zhang H. Effect of rhamnolipids on the biodegradation of m-dichlorobenzene in biotrickling filters: Performance and mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 320:115951. [PMID: 36056502 DOI: 10.1016/j.jenvman.2022.115951] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
In this study, the effect of rhamnolipids (RL) on m-dichlorobenzene (m-DCB) removal and biofilm was investigated in two biotrickling filters (BTF) (BTF1: blank control; BTF2: RL addition). The critical micelle concentration (CMC) value of RL was 75.6 mg L-1, and the RL could significantly improve the solubilization of m-DCB. The results showed that the optimal concentration of RL was 180 mg L-1. The removal efficiency (RE) of m-DCB dropped by 42.4% for BTF1 no fed with RL and only 28.2% for BTF2 fed with RL when the inlet concentration increased from 200 to 1400 mg m-3 at an empty bed time (EBRT) of 60 s. RL increased the secretion of extracellular polymers (EPS) and the ratio of Protein/Polysaccharide, which improved the mass transfer of m-DCB to the biofilm. RL also had a facilitating effect on catechol-1,2-dioxygenase (C12O) enzyme activity. Furthermore, RL increased Zeta potential and facilitated microorganisms to form biofilm. The dominant microorganisms of microbial community were increased and the application of RL promoted the enrichment of them.
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Affiliation(s)
- Bairen Yang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
| | - Jiajie Wang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Menglei Wu
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Qingqing Shang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Hao Zhang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
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Wei Z, He Y, Xiao X, Huang Z, Jiao H. Coupled catalytic-biodegradation of toluene over manganese oxide-coated catalytic membranes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:73552-73562. [PMID: 35624373 DOI: 10.1007/s11356-022-20697-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Volatile organic compounds (VOCs) harm human health and the ecological environment. This work demonstrated manganese oxide catalytic membrane coupled to biodegradation of toluene in a catalytic membrane biofilm rector (CMBfR). Toluene removal efficiency in CMBfR was up to 91% in a 200-day operation. Manganese oxide combined to membrane biofilm reactor could promote degradation of toluene. Manganese oxide catalysts were characterized by XRD, Raman, XPS, and FT-IR. Raman and XPS spectra verified the existence of Mn defects, adsorbed oxygen species, and the oxygen vacancy, which was catalytic of toluene on the Mn oxides coated membranes significantly. Pseudomonas, Hydrogenophaga, Flavobacterium, Bacillus, Clostridium and Prosthecobacter were the dominant bacteria of toluene degradation. Mn oxides catalysis could degrade toluene into intermediate products; these products were entered into the biological phase eventually metabolized to CO2 and H2O. These results show that the catalytic membrane biofilm reactor is achievable and opens new possibilities for applying the catalytic membrane biofilm reactor to VOCs treatment.
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Affiliation(s)
- Zaishan Wei
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
| | - Yiming He
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiaoliang Xiao
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zhenshan Huang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Huaiyong Jiao
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
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12
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Chen WT, Chien CC, Ho WS, Ou JH, Chen SC, Kao CM. Effects of treatment processes on AOC removal and changes of bacterial diversity in a water treatment plant. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 311:114853. [PMID: 35276566 DOI: 10.1016/j.jenvman.2022.114853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 02/27/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
The effectiveness of different treatment processes on assimilable organic carbon (AOC) removal and bacterial diversity variations was evaluated in a water treatment plant. The van der Kooij technique was applied for AOC analysis and responses of bacterial communities were characterized by the metagenomics assay. Results show that the AOC concentrations were about 93, 148, 43, 51, 37, and 38 μg acetate-C/L in effluents of raw water basin, preozonation, rapid sand filtration (RSF), ozonation, biofiltration [biological activated carbon (BAC) filtration], and chlorination (clear water), respectively. Increased AOC concentrations were observed after preozonation, ozonation, and chlorination units due to the production of biodegradable organic matters after the oxidation processes. Results indicate that the oxidation processes were the main causes of AOC formation, which resulted in significant increases in AOC concentrations (18-59% increment). The AOC removal efficiencies were 47, 28, and 60% in the RSF, biofiltration, and the whole system, respectively. RSF and biofiltration were responsible for the AOC treatment and both processes played key roles in AOC removal. Thus, both RSF and biofiltration processes would contribute to AOC treatment after oxidation. Sediments from the raw water basin and filter samples from RSF and BAC units were collected and analyzed for bacterial communities. Results from scanning electron microscope analysis indicate that bacterial colonization was observed in filter materials. This indicates that the surfaces of the filter materials were beneficial to bacterial growth and AOC removal via the adsorption and biodegradation mechanisms. Next generation sequencing analyses demonstrate that water treatment processes resulted in the changes of bacterial diversity and community profiles in filters of RSF and BAC. According to the findings of bacterial composition and interactions, the dominant bacterial phyla were Proteobacteria (41% in RSF and 56% in BAC) followed by Planctomycetes and Acidobacteria in RSF and BAC systems, which might affect the AOC biodegradation efficiency. Results would be useful in developing AOC treatment and management processes in water treatment plants.
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Affiliation(s)
- W T Chen
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - C C Chien
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Chung-Li City, Taoyuan, Taiwan
| | - W S Ho
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - J H Ou
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - S C Chen
- Department of Life Sciences, National Central University, Taoyuan, Taiwan.
| | - C M Kao
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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13
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Li G, Gui C, Zhu R, Lei Z. Deep eutectic solvents for efficient capture of cyclohexane in volatile organic compound
s
: Thermodynamic and molecular mechanism. AIChE J 2021. [DOI: 10.1002/aic.17535] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Guoxuan Li
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China
| | - Chengmin Gui
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China
| | - Ruisong Zhu
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China
| | - Zhigang Lei
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China
- School of Chemistry and Chemical Engineering Shihezi University Shihezi China
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14
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Dai Y, Guo Y, Wang J, Li Y, Zhang L, Liu X. A vertically configured photocatalytic-microbial fuel cell for electricity generation and gaseous toluene degradation. CHEMOSPHERE 2021; 285:131530. [PMID: 34273692 DOI: 10.1016/j.chemosphere.2021.131530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/01/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
A vertically configured photocatalytic-microbial fuel cell (photo-MFC) is developed by combining a nanodiamond-decorated ZnO (ZnO/ND) photocathode with a bioanode. The system can effectively couple the light energy with bioenergy to enhance the degradation of volatile organic compounds (VOCs) and boost electricity output. Results show that the composite system exhibits increased performance for toluene removal (60.65%), higher than those of individual parts (ZnO/ND-photocatalysis: 37.16%, MFC: 17.81%). Furthermore, its electrochemical performance is dramatically increased. The peak power density of 120 mW/m2 and the current density of 1.07 A/m2 are generated under light illumination, which are about 1.57-fold and 1.37-fold higher than that under dark (76 mW/m2, 0.78 A/m2), respectively. Microbial community analysis demonstrates Proteobacteria and Firmicute are dominant phyla, implying they play important roles on accelerating the extracellular-electron transfer and toluene degradation. In addition, the underlying mechanism for toluene degradation in the photo-MFC system is preliminary explored. Our results suggest that the photo-MFC has great potential for simultaneous treatment of VOCs with energy recovery.
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Affiliation(s)
- Yexin Dai
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300354, PR China
| | - Yajing Guo
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300354, PR China
| | - Jiao Wang
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300354, PR China
| | - Yunxue Li
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300354, PR China
| | - Lei Zhang
- School of Life Science, Tianjin University, Tianjin, 300372, PR China
| | - Xianhua Liu
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300354, PR China.
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15
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Huan C, Lyu Q, Tong X, Li H, Zeng Y, Liu Y, Jiang X, Ji G, Xu L, Yan Z. Analyses of deodorization performance of mixotrophic biotrickling filter reactor using different industrial and agricultural wastes as packing material. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126608. [PMID: 34280718 DOI: 10.1016/j.jhazmat.2021.126608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/19/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
In this study, to efficiently remove malodorous gas and reduce secondary pollution under mixotrophic conditions, pine bark, coal cinder, straw and mobile bed biofilm reactor (MBBR) fillers were used as packing materials in a biological trickling filter (BTF) to simultaneously treat high-concentration H2S and NH3. The results showed that the removal rate of BTF-A filled with pine bark was the highest, which was 86.31% and 94.06% under the H2S and NH3 loading rates of 53.59 g/m³·h while the empty bed residence time (EBRT) was 40.5 s. The theoretical maximum load was obtained by fitting the kinetic curve, and the value were 90.09 g H2S m-³·h-1 and 172.41 g NH3 m-³·h-1. Meanwhile, after treating with 720 ppm of NH3, the average concentration of NO3- in the BTF circulating fluid was only 127.58 mg/L, indicating the better performance of secondary pollutants control. Microbiological analysis showed that Dokdonella, Micropruina, Candidatus_Alysiosphaera, Nakamurella and Thiobacillus possessed high abundance at the genus level, and their entire percentage in four BTF reactors were 62.87%, 46.32%, 47.98%, and 57.35% respectively. It is worthwhile that the genera Comamonas and Trichococcus with heterotrophic nitrification and aerobic denitrification capabilities and proportion of 3.66%, 1.45%, 5.43%, and 3.23% were observed in four reactors.
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Affiliation(s)
- Chenchen Huan
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Qingyang Lyu
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xinyu Tong
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; College of Environmental and Chemical Engineering, Xi'an Polytechnic University, Shaanxi 710048, China
| | - Haihong Li
- College of Environmental and Chemical Engineering, Xi'an Polytechnic University, Shaanxi 710048, China
| | - Yong Zeng
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yang Liu
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xinru Jiang
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Gaosheng Ji
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lishan Xu
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Zhiying Yan
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
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16
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Zhang Y, Liu J, Chen Y, Li J. Screening and study of the degradation characteristics of efficient toluene degrading bacteria combinations. ENVIRONMENTAL TECHNOLOGY 2021; 42:3403-3410. [PMID: 32070244 DOI: 10.1080/09593330.2020.1732477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
In this paper, three effective toluene-degrading bacteria were obtained through acclimation and screening by using landfill leachate as the initial liquid strain. The three obtained bacteria were denoted as J1, J2 and J3, and identified as Pseudomonas, Bacillus and Staphylococcus, respectively. We then identified the optimal combination of these toluene-degrading bacteria in the laboratory. The combination of J1 + J3 (1:1) exhibited the highest toluene removal efficiency (RE). A vertical bio-trickling filter (BTF) packed with ceramsite was started by inoculation with the effective combination. The performance of the BTF in treating toluene under various operating conditions was investigated. After 17 days of operation, the toluene RE reached about 90% and the maximum elimination capacity reached 42.0 g m-3 h-1. The scanning electron microscope (SEM) showed that after the successful start-up of the BTF, the biofilm on the packing surface primarily consisted of Bacillus and Staphylococcus. During the stable state, the RE of the BTF was maintained above 80%, the shortest empty bed residence time was 34 s and toluene concentrations ranged between 300 and 800 mg m-3. The results indicate that the BTF started using the effective combination of bacteria described here is robust. This paper also provides a preliminary analysis of the mechanism of microbial degradation of pollutants in the BTF.
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Affiliation(s)
- Yun Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, People's Republic of China
| | - Jia Liu
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, People's Republic of China
| | - Ying Chen
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, People's Republic of China
| | - Jian Li
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, People's Republic of China
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17
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Zhang Y, Liu J, Li J, Yue T. Effects of filler voidage on pressure drop and microbial community evolution in fungal bio-trickling filters. CHEMOSPHERE 2021; 273:129710. [PMID: 33524753 DOI: 10.1016/j.chemosphere.2021.129710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/18/2020] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
Bio-trickling filters (BTFs) can be used to remediate pollution by volatile organic compounds such as toluene. To investigate the effect of filler voidage on pressure drop (△P), two parallel BTFs were constructed using ceramsite with different voidages (47.5% for BTF1 and 55% for BTF2) and inoculated with Fusarium fungus to purify toluene. Commutation and stagnation operations were explored as ways to relieve △P. In BTF1, commutation temporarily relieved △P and maintained it for 7 days. Implementing stagnation on the 178th day for 69 days effectively reduced the △P from 720 Pa/m to below 20 Pa/m, which was maintained for 36 days. Compared with BTF1, the filler in BTF2 effectively delayed the increase in △P for 70 days or more and ensured stable operation for as long as 174 days. High-throughput sequencing revealed that Fusarium was mainly replaced by Protoctista, Fronsecaea and other fungi in both BTFs, although there were significant differences in their microbial communities. The influences of commutation and stagnation operations on fungal evolution were more obvious in BTF2, in relation to both time and space. The results provide guidance for designing better BTFs to treat hazardous pollutants.
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Affiliation(s)
- Yun Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China; Beijing Municipal Institute of Labour Protection, Beijing, 100054, China
| | - Jia Liu
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Jian Li
- Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China.
| | - Tao Yue
- Beijing Municipal Institute of Labour Protection, Beijing, 100054, China.
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18
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Jose J, Philip L. Continuous flow pulsed power plasma reactor for the treatment of aqueous solution containing volatile organic compounds and real pharmaceutical wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 286:112202. [PMID: 33618319 DOI: 10.1016/j.jenvman.2021.112202] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/12/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
The degradation of four recalcitrant and toxic VOCs (volatile organic compounds) present in pharmaceutical wastewater was studied using a continuous flow plasma reactor, along with evaluating its potential for real effluent treatment. The wastewater was sprayed into the plasma zone of the reactor, and it was re-circulated for better performance. The effect of different HRTs (hydraulic retention time) and initial concentrations of VOCs on the degradation efficiency were evaluated. In continuous reactor, complete removal of 200 mg/L of chloroform, chlorobenzene, and toluene was achieved at a HRT of 33.3 min, with an energy consumption of 22.4 kWh/m3. The study on the effect of different inlet loading rates of VOCs on elimination capacity showed that, the removal was limited initially by diffusion of reactive species and at higher loads, it was limited by insufficient amount of reactive species produced. During degradation of VOC mixture, more than 90% removal of chloroform, chlorobenzene and toluene was achieved at HRT of 33.3 min, and the TOC removal was 78.3%. The degradation efficiency of VOC mixture reduced slightly compared to that of individual compounds, due to insufficient amount of reactive species produced. The COD and BOD removal achieved after 140 min of direct plasma treatment of real pharmaceutical wastewater in batch reactor was 92.7% and 95.2%, respectively. Coagulation pre-treatment did not have a significant effect on the plasma treatment of real wastewater. When pharmaceutical effluent treatment was carried out in continuous flow reactor, 91.8% COD removal, 90.9% BOD removal and more than 90% degradation of all VOCs were achieved at a HRT of 150 min. Plasma treatment alone was capable of effectively treating the real pharmaceutical wastewater without any pre-treatment.
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Affiliation(s)
- Jerin Jose
- Department of Civil Engineering, Indian Institute of Technology Madras, 600036, India.
| | - Ligy Philip
- Department of Civil Engineering, Indian Institute of Technology Madras, 600036, India
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19
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Jose J, Philip L. Comparative study of degradation of toluene and methyl isobutyl ketone (MIBK) in aqueous solution by pulsed corona discharge plasma. J Environ Sci (China) 2021; 101:382-396. [PMID: 33334533 DOI: 10.1016/j.jes.2020.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 06/12/2023]
Abstract
Effectiveness of pulsed power plasma for the degradation of two toxic volatile organic compounds (VOCs), toluene and methyl isobutyl ketone (MIBK), in aqueous solution was evaluated. The plasma degradation of MIBK has been studied for the first time. The influence of initial concentration of target compound, solution pH and scavengers on percentage degradation was evaluated. 100% removal of 200 mg/L of toluene and MIBK was achieved both in liquid and gaseous phases after 12 and 16 min of plasma treatment, respectively. The first order rate constant of toluene and MIBK degradation (for 200 mg/L each) was 0.421 and 0.319 min-1 respectively when they were treated individually, and these values decreased slightly during degradation of their mixture. MIBK degradation was slower than toluene and it might be due to semi volatile and hydrophilic nature of MIBK. The effect of initial concentration of toluene and MIBK showed different degradation patterns. Highest degradation of both the compounds was obtained in neutral pH and in absence of scavengers. •OH radical was the major reactive species involved in their degradation. Their degradation in real environmental matrices showed that removal reduced significantly in secondary effluent due to scavenging of reactive species by various ions and organic matter. The total number of degradation intermediates identified in case of toluene and MIBK was 11 and 14 respectively and formate was the one recalcitrant byproduct generated. The degradation pathway of toluene and MIBK involving reactions of reactive oxygen and nitrogen species and reductive species is proposed.
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Affiliation(s)
- Jerin Jose
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ligy Philip
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
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20
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Song Y, Chen S, Luo F, Sun L. Absorption of Toluene Using Deep Eutectic Solvents: Quantum Chemical Calculations and Experimental Investigation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04986] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yunfei Song
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao Shandong 266580, China
| | - Shuo Chen
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao Shandong 266580, China
| | - Fei Luo
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao Shandong 266580, China
| | - Lanyi Sun
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao Shandong 266580, China
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21
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Zheng Y, Yang D, Dzakpasu M, Yang Q, Liu Y, Zhang H, Zhang L, Wang XC, Zhao Y. Effects of plants competition on critical bacteria selection and pollutants dynamics in a long-term polyculture constructed wetland. BIORESOURCE TECHNOLOGY 2020; 316:123927. [PMID: 32750641 DOI: 10.1016/j.biortech.2020.123927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/21/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
The effects of mix planting on the functions of plants, microorganisms, and their interactions were studied in a CW planted with Phragmites australis and Typha orientalis over six years. Findings show notable competition among plant species, with excessive overgrowth of the dominant species (P. australis) over T. orientalis. The excessive outcompeting by P. australis resulted in significantly higher plant density and biomass of 20.1 times and 11.2 times, respectively than that of T. orientalis. Interspecific competition appeared to considerably intensify plants contributions to nitrogen and phosphorus removal, which increased from circa 9% in the first year up to 42% in the sixth year. High-throughput pyrosequencing and network analyses demonstrated that the dominant species stands harbor diverse bacterial communities that could enhance the wetland performance through carbon degradation, nutrient cycling, and supporting plant growth. These results provide useful insights into the interactive effects of plants and bacteria in polyculture constructed wetlands.
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Affiliation(s)
- Yucong Zheng
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China.
| | - Dan Yang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Mawuli Dzakpasu
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Xi'an 710055, PR China
| | - Qian Yang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Yang Liu
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Hengfeng Zhang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Lu Zhang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Xiaochang C Wang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Xi'an 710055, PR China
| | - Yaqian Zhao
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland
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22
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Zhang Y, Liu J, Xing H, Li J. Effect of liquid supply on the performance of a fungal bio-trickling filter treating hydrophobic VOC. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107658] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Ying S, Kong X, Cai Z, Man Z, Xin Y, Liu D. Interactions and microbial variations in a biotrickling filter treating low concentrations of hydrogen sulfide and ammonia. CHEMOSPHERE 2020; 255:126931. [PMID: 32402879 DOI: 10.1016/j.chemosphere.2020.126931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 03/18/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
A lab-scale biotrickling filter (BTF) packed with porcelain Rasching ring and ceramsite was applied for co-treating of low concentrations of hydrogen sulfide (H2S) and ammonia (NH3), as major pollutants typically found in e.g., intensive livestock production facilities. In this study, the outlet gas concentrations of H2S and NH3 were used for indicators if the treated gas reached odor-free condition. Overall, excellent removal efficiencies were obtained for both H2S and NH3 in the BTF during Stage I (H2S alone) and Stage II (H2S and NH3). Specifically, the H2S outlet concentration was below the detection limit (∼3.6 ppbv) and the NH3 outlet concentration was less than 0.4 ppmv when the inlet concentrations of H2S and NH3 were around 1.8 ppmv and 35.3 ppmv, respectively. In this case, the running empty bed residence time was 10.2 s. During Stage II, the outlet H2S concentration was decreased significantly when the inlet NH3 concentration was increased, likely due to the influence by pH. Meanwhile, the outlet nitrous oxide (N2O) concentration was kept low (<2% NH3) during the experiment, suggesting a proper operation of the BTF. After the inlet gas shifted from H2S alone at Stage I to H2S and NH3 at Stage II, the main sulfur-oxidizing bacteria (SOB) species in the BTF switched from Acidithiobacillus to Thiobacillus.
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Affiliation(s)
- Shihao Ying
- Institute of Agricultural Bio-Environmental Engineering, College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Xianwang Kong
- Institute of Agricultural Bio-Environmental Engineering, College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Zhen Cai
- Institute of Agricultural Bio-Environmental Engineering, College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Zun Man
- Institute of Agricultural Bio-Environmental Engineering, College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Yicong Xin
- Institute of Agricultural Bio-Environmental Engineering, College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Dezhao Liu
- Institute of Agricultural Bio-Environmental Engineering, College of Biosystems Engineering and Food Science, Zhejiang University, China.
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Liu Y, Zhang Q, Lv Y, Ren R. Pyridine degradation characteristics of a newly isolated bacterial strain and its application with a novel reactor for the further treatment in pyridine wastewater. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Li K, Yang B, Wang L. Performance evaluation of a biotrickling filter for the removal of gas-phase 1,2-dichlorobenzene: Influence of rhamnolipid and ferric ions. CHEMOSPHERE 2020; 250:126261. [PMID: 32109701 DOI: 10.1016/j.chemosphere.2020.126261] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/12/2020] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
The aim of this study was to evaluate the influence of rhamnolipid (RL) and ferric ions on the performance of a biotrickling filter (BTF) for the removal of gas-phase 1,2-dichlorobenzene (o-DCB). A comprehensive investigation of microbial growth, pollutant solubility, extracellular polymeric substances (EPS) and enzymatic activity in o-DCB degradation by an isolated strain Bacillus cereus DL-1 with/without RL and Fe3+ were carried out using batch microcosm experiments. In addition, o-DCB removal performance, biofilm morphology, and microbial community structures in two identical lab-scale biotrickling filters (named BTF1 and BTF2) inoculated with strain DL-1 were studied. The batch microcosm experiments demonstrated that 120 mg L-1 RL and 4 mg L-1 Fe3+ could enhance the biodegradation of o-DCB, which may be due to promotion on bacterial growth, o-DCB solubilization, C12O enzyme activity, and polysaccharide (PS) and protein (PN) in EPS. Fourier transform infrared (FTIR) spectra indicated that the addition of RL with Fe3+ had notable effects on the functional groups of PS and PN in EPS. The experimental results in BTFs indicate that the removal efficiency of o-DCB decreased from 100% to 56.4% for BTF1, which was not fed with RL and Fe3+, and from 100% to 80.3% for BTF2, which was fed with RL and Fe3+, when the inlet loading rate increased from 4.88 to 102 g m-3 h-1 at an empty bed residence time of 60 s. In addition, the microbial adhesive strength and the microbial community structure were different among both BTFs, highlighting the positive effects of RL and Fe3+.
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Affiliation(s)
- Kang Li
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, PR China
| | - Bairen Yang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, PR China; School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, 224000, PR China
| | - Liping Wang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, PR China; Engineering Research Center of Mine Ecological Construction, Ministry of Education, Xuzhou, Jiangsu, 221116, PR China.
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Zhang D, Gao J, Zhang L, Zhang W, Jia J, Dai H, Wang Z. Responses of nitrification performance, triclosan resistome and diversity of microbes to continuous triclosan stress in activated sludge system. J Environ Sci (China) 2020; 92:211-223. [PMID: 32430124 DOI: 10.1016/j.jes.2020.02.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/11/2020] [Accepted: 02/22/2020] [Indexed: 06/11/2023]
Abstract
Triclosan (TCS) is commonly found in wastewater treatment plants, which often affects biological treatment processes. The responses of nitrification, antibiotic resistome and microbial community under different TCS concentrations in activated sludge system were evaluated in this study. The experiment was conducted in a sequencing batch reactor (SBR) for 240 days. Quantitative PCR results demonstrated that the abundance of ammonium oxidizing bacteria could be temporarily inhibited by 1 mg/L TCS and then gradually recovered. And the abundances of nitrite oxidizing bacteria (NOB) under 2.5 and 4 mg/L TCS were three orders of magnitude lower than that of seed sludge, which accounted for partial nitrification. When the addition of TCS was stopped, the abundance of NOB increased. The mass balance experiments of TCS demonstrated that the primary removal pathway of TCS changed from adsorption to biodegradation as TCS was continuously added into the SBR system. Moreover, TCS increased the abundance of mexB, indicating the efflux pump might be the main TCS-resistance mechanism. As a response to TCS, bacteria could secrete more protein (PN) than polysaccharide. Three-dimensional excitation-emission matrix revealed that tryptophan PN-like substances might be the main component in PN to resist TCS. High-throughput sequencing found that the relative abundances of Paracoccus, Pseudoxanthomonas and Thauera increased, which could secrete extracellular polymeric substances (EPS). And Sphingopyxis might be the main TCS-degrading bacteria. Overall, TCS could cause partial nitrification and increase the relative abundances of EPS-secreting bacteria and TCS-degrading bacteria.
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Affiliation(s)
- Da Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Jingfeng Gao
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
| | - Lifang Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Wenzhi Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Jingxin Jia
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Huihui Dai
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Zhiqi Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
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Yang K, Li L, Wang Y, Liu J. Effects of substrate fluctuation on the performance, microbial community and metabolic function of a biofilter for gaseous dichloromethane treatment. CHEMOSPHERE 2020; 249:126185. [PMID: 32088467 DOI: 10.1016/j.chemosphere.2020.126185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
Dichloromethane (DCM) is a harmful volatile organic compound that usually originates from pharmaceutical industry. In this study, the treatment of gaseous DCM in a biofilter was investigated by gradually increasing the DCM inlet concentration. Nearly 80% of DCM could be removed when the inlet concentration was lower than 0.30 g m-3. The maximum elimination capacity of 26.6 g m-3·h-1 was achieved at an inlet loading rate of 38.4 g m-3·h-1. However, with the increase in the inlet concentration to more than 0.60 g m-3, the removal efficiency obviously decreased to about 40%. After a starvation period of 2 weeks, the biofilter rapidly recovered its performance. The Haldane model including a substrate inhibition term was applied to describe the kinetics of the biofilter. High-throughput sequencing indicated that DCM-degrading genera, such as Rhodanobacter sp., Hyphomicrobium sp., Rhizomicrobium sp., Bacillus sp., Pseudomonas sp., and Clostridium sp., were dominant in the biofilter in different operation phases. The microbial communities and diversities were greatly affected by the DCM concentration. Microbial metabolic functions were predicted using Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) database. The results indicated that xenobiotics biodegradation and metabolism, carbohydrate metabolism, and amino acid metabolism were the three most abundant metabolic pathways of the microbes. The abundances of these metabolic functions were also altered by the DCM concentration.
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Affiliation(s)
- Kaixiong Yang
- 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.
| | - Lin Li
- 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.
| | - Yanjie Wang
- School of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China; Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
| | - Junxin Liu
- 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.
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Qin L, Xu Z, Liu L, Lu H, Wan Y, Xue Q. In-situ biodegradation of volatile organic compounds in landfill by sewage sludge modified waste-char. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 105:317-327. [PMID: 32106042 DOI: 10.1016/j.wasman.2020.02.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
VOCs are the major harmful pollutants released from MSW landfills, which are toxicity to human health. In order to in-situ biodegradation of VOCs released from landfill, two novel laboratory-scale biocovers, including waste-char obtained from MSW pyrolysis (WC), and sewage sludge modified the WC (SWC), are used to degradate VOCs. The removal performances of VOCs as well as the bacterial community in the WC and SWC are investigated in a simulated landfill systems with the contrast experiment of a landfill cover soil (LCS) for 60 days. Meanwhile, the adsorption-biodegradation of VOCs model compounds over the LCS, WC, and SWC are also tested in fixed-bed adsorption reactor and in-situ FTIR. The VOCs removal efficiencies by the SWC are maintained above 85% for a long-term, much higher than that of the LCS and WC. The higher removal efficiencies and long-term stability for VOCs degradation in SWC are attributed to a strongly positive synergistic between adsorption and biodegradation that the gaseous VOCs released from MSW is effectively adsorbed by the SWC due to its higher VOCs adsorption capacity, and then the adsorbed-VOCs is converted into CO2 and H2O by the microorganisms that consuming the adsorbed-VOCs as energy and carbon sources. Subsequently, the decrease of the adsorbed-VOCs in SWC would also promote the transformation of the gaseous VOCs into the adsorbed VOCs and accelerate the growth of microorganisms by taking the adsorbed-VOCs as the energy and carbon source, resulted in a higher adsorption rate and degradation rate for VOCs.
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Affiliation(s)
- Linbo Qin
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan 430071, China.
| | - Zhe Xu
- College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Lei Liu
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan 430071, China; Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering, Wuhan 430071, China.
| | - Haijun Lu
- School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yong Wan
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan 430071, China; Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering, Wuhan 430071, China.
| | - Qiang Xue
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan 430071, China; Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering, Wuhan 430071, China.
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Wei ZS, He YM, Huang ZS, Xiao XL, Li BL, Ming S, Cheng XL. Photocatalytic membrane combined with biodegradation for toluene oxidation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109618. [PMID: 31487569 DOI: 10.1016/j.ecoenv.2019.109618] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 08/25/2019] [Accepted: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Photocatalytic membrane coupled to biodegradation offers potential for degrading volatile organic compounds (VOCs) in photocatalytic membrane biofilm reactor. An intimately coupled photocatalysis and biodegradation reactor was operated in continuous operation for 500 days to treat simulated waste gas containing toluene. Toluene removal efficiency obtained 99%, with the elimination capacity of 550 g m-3·h-1. Membrane photocatalysis coupled to biodegradation was created to improve toluene removal from 11 to 20%. The dominant genera were Lysinibacillus, Hydrogenophaga, Pseudomonas at 30 d, Rudaea, Dongia, Litorilinea at 230 d xyl, Tod, Tcb, Bed, Tmo, Tbu, Tou, Dmp, Cat were functional genes of toluene metabolism, as shown by16S rDNA and metagenomic sequencing. Photocatalysis destroyed part of the toluene into biodegradable intermediates that were immediately mineralized by microorganisms in biofilm, some toluene was directly degraded by toluene degrading bacterial community into carbon dioxide and water. The novel hybrid photocatalytic membrane biofilm reactor is a cost-effective and robust alternative to VOCs treatment.
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Affiliation(s)
- Z S Wei
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China.
| | - Y M He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - Z S Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - X L Xiao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - B L Li
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - S Ming
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - X L Cheng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
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Boojari MA, Zamir SM, Rene ER, Shojaosadati SA. Performance assessment of gas-phase toluene removal in one- and two-liquid phase biotrickling filters using artificial neural networks. CHEMOSPHERE 2019; 234:388-394. [PMID: 31228841 DOI: 10.1016/j.chemosphere.2019.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/29/2019] [Accepted: 06/04/2019] [Indexed: 06/09/2023]
Abstract
The main aim of this work is to study gas-phase toluene removal in one- and two-liquid phase biotrickling filters (O/TLP-BTF) and model the BTF performance using artificial neural networks (ANNs). The TLP-BTF was operated for 60 d in the presence of silicone oil at empty bed residence times (EBRTs) of 120, 60, and 45 s, respectively, and toluene concentrations in the range of 0.9-3.1 g m-3. A t-test analysis indicated that increasing the silicone oil volume ratio from 5 to 10% v/v, did not significantly improve the TLP-BTF performance (p-value = 0.65 > 0.05). The results from ANN modeling showed that toluene removal was more negatively affected by the inlet concentration (casual index, CI = -5.63) due to the kinetic limitation. The CI values for inlet concentration (+4.01) and liquid trickling rate (-2.45) indicated that the diffusion-limited regime controlled the removal process in the OLP-BTF.
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Affiliation(s)
- Mohammad Amin Boojari
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), Tehran, Iran
| | - Seyed Morteza Zamir
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), Tehran, Iran.
| | - Eldon R Rene
- Department of Environmental Engineering and Water Technology, IHE-Delft Institute for Water Education, Westvest 7, 2611, AX Delft, the Netherlands
| | - Seyed Abbas Shojaosadati
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), Tehran, Iran
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31
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Effect of starvation time on NO and N2O production during heterotrophic denitrification with nitrite and glucose shock loading. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.07.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Chen CY, Wang GH, Tsai CT, Tsai TH, Chung YC. Removal of toluene vapor in the absence and presence of a quorum-sensing molecule in a biotrickling filter and microbial composition shift. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2019; 55:256-265. [PMID: 31662034 DOI: 10.1080/10934529.2019.1684120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 10/11/2019] [Accepted: 10/13/2019] [Indexed: 06/10/2023]
Abstract
Toluene is highly toxic and mutagenic, and it is generally used as an industrial solvent. Thus, toluene removal from air is necessary. To solve the problem of reducing high toluene concentrations with a short gas retention time (GRT), a quorum-sensing molecule [N-(3-oxododecanoyl)-L-homoserine lactone] (OHL) was added to a biotrickling filter (BTF). In this study, a BTF was used to treat synthetic and natural waste gases containing toluene. An extensive analysis was performed to understand the removal efficiency, removal characteristics, and bacterial community of the BTF. The addition of 20 μM OHL to the BTF significantly improved toluene removal, and more than 99.2% toluene removal was achieved at a GRT of 0.5 min when natural waste gas containing toluene (590-1020 ppm or 2.21-3.83 g m-3) was introduced. The maximum inlet load for toluene was 337.9 g m-3 h-1. Moreover, the BTF exhibited satisfactory adaptability to shock loading and shutdown operations. Pseudomonadaceae (33.0%) and Comamonadaceae (26.3%) were predominant bacteria in the system after a 98-day operation. These bacteria were responsible for toluene degradation. The optimal moisture content and low pressure drop for system operations demonstrated that the BTF was energy and cost efficient. Therefore, processing through a BTF with OHL is a favorable technique for toluene treatment.
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Affiliation(s)
- Chih-Yu Chen
- Department of Tourism and Leisure, Hsing Wu University, Taipei, Taiwan
| | - Guey-Horng Wang
- Research Center of Natural Cosmeceuticals Engineering, Xiamen Medical College, Xiamen, China
| | - Cheng-Ta Tsai
- Department of Biological Science and Technology, China University of Science and Technology, Taipei, Taiwan
| | - Teh-Hua Tsai
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| | - Ying-Chien Chung
- Department of Biological Science and Technology, China University of Science and Technology, Taipei, Taiwan
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Li M, Shi Y, Li Y, Sun Y, Song C, Huang Z, Yang Z, Han Y. Shift of microbial diversity and function in high-efficiency performance biotrickling filter for gaseous xylene treatment. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2019; 69:1059-1069. [PMID: 31050600 DOI: 10.1080/10962247.2019.1600603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/21/2019] [Accepted: 03/22/2019] [Indexed: 05/26/2023]
Abstract
Xylene is the main component of many volatile industrial pollution sources, and the use of biotechnology to remove volatile organic compounds (VOCs) has become a growing trend. In this study, a biotrickling filter for gaseous xylene treatment was developed using activated sludge as raw material to study the biodegradation process of xylene. Reaction conditions were optimized, and long-term operation was performed. The optimal pH was 7.0, gas-liquid ratio was 15:1 (v/v), and temperature was 25 °C. High-throughput sequencing technique was carried out to analyze microbial communities in the top, middle, and bottom layers of the reactor. Characteristics of microbial diversity were elucidated, and microbial functions were predicted. The result showed that the removal efficiency (RE) was stable at 86%-91%, the maximum elimination capacity (EC) was 303.61 g·m-3·hr-1, residence time was 33.75 sec, and the initial inlet xylene concentration was 3000 mg·m-3, which was the highest known degradation concentration reported. Kinetic analysis of the xylene degradation indicated that it was a very high-efficiency-activity bioprocess. The rmax was 1059.8 g·m-3·hr-1, and Ks value was 4.78 g·m-3 in stationary phase. In addition, microbial community structures in the bottom and top layers were significantly different: Pseudomonas was the dominant genus in the bottom layer, whereas Sphingobium was dominant in the top layer. The results showed that intermediate metabolites of xylene could affect the distribution of community structure. Pseudomonas sp. can adapt to high concentration xylene-contaminated environments. Implications: We combined domesticated active sludge and reinforced microbial agent on biotrickling filter. This system performed continuously under a reduced residence time at 33.75 sec and high elimination capacity at 303.61 g·m-3·hr-1 in the biotrickling reactor for about 260 days. In this case, predomestication combined with reinforcing of microorganisms was very important to obtaining high-efficiency results. Analysis of microbial diversity and functional prediction indicated a gradient distribution along with the concentration of xylene. This implied a rational design of microbial reagent and optimizing the inoculation of different sites of reactor could reduce the preparation period of the technology.
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Affiliation(s)
- Mingxue Li
- College of Marine and Environmental Sciences, Tianjin University of Science & Technology , Tianjin , People's Republic of China
| | - Yantao Shi
- R&D Department, SwanShine (Tianjin) Biotechnology & Development Ltd , Tianjin , People's Republic of China
| | - Yixuan Li
- R&D Department, SwanShine (Tianjin) Biotechnology & Development Ltd , Tianjin , People's Republic of China
| | - Yizhe Sun
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology , Tianjin , People's Republic of China
| | - Chunhui Song
- Key Laboratory of Western China's Mineral Resources of Gansu Province, School of Earth Sciences, University of Lanzhou , Lanzhou , Gansu , People's Republic of China
| | - Zhiyong Huang
- Tianjin Key Laboratory for Industrial Biological Systems and Bioprocessing Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences , Tianjin , People's Republic of China
| | - Zongzheng Yang
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science & Technology , Tianjin , People's Republic of China
| | - Yifan Han
- Tianjin Key Laboratory for Industrial Biological Systems and Bioprocessing Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences , Tianjin , People's Republic of China
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Feng Y, Zhang Z, Zhao Y, Song L, Wang X, Yang S, Long Y, Zhao C, Qiu L. Accelerated Rhodamine B removal by enlarged anode electric biological (EAEB) with electro-biological particle electrode (EPE) made from steel converter slag (SCS). BIORESOURCE TECHNOLOGY 2019; 283:1-9. [PMID: 30889531 DOI: 10.1016/j.biortech.2019.03.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
Electro-biological particle electrode (EPE) made from steel converter slag (SCS) was used as a particle electrode in an enlarged anode electric biological (EAEB) reactor for Rhodamine B (RhB) wastewater treatment, and its purification performance and microbial community were examined. The results revealed that (1) the EAEB reactor showed much higher average removal rates of RhB, COD and NH4+-N, i.e. 91.68%, 87.63%, and 90.54%, which meant an increase by 59.86%, 20.48%, and 14.22%, respectively, compared with BAF; (2) The optimum current intensity (CI) for simultaneously removing RhB, COD and NH4+-N in the EAEB reactor was at 1.00 A; and (3)Methylophilus, Aeromonas, Pseudomonas, Pelomonas and Zoogloea accounted for the main bacterial community in EAEB. Therefore, the EAEB reactor with EPE produced from steel converter slag (SCS) was suitable to simultaneously remove RhB, COD and NH4+-N.
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Affiliation(s)
- Yan Feng
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China.
| | - Zhijie Zhang
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Youheng Zhao
- Environmental Engineering Co., Ltd., Shandong Academy of Environmental Science, Jinan 250001, China
| | - Liang Song
- No. 1 Institute Geology and Resources of ShanDong Province, Jinan 250100, China
| | - Xinwei Wang
- China Urban Construction Design & Research Institute Co. Ltd (Shang Dong), Jinan 250022, China
| | - Shumin Yang
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Yingying Long
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Chunhui Zhao
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Liping Qiu
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
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35
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Zhang F, Shao J, Yang H, Guo D, Chen Z, Zhang S, Chen H. Effects of biomass pyrolysis derived wood vinegar on microbial activity and communities of activated sludge. BIORESOURCE TECHNOLOGY 2019; 279:252-261. [PMID: 30735935 DOI: 10.1016/j.biortech.2019.01.133] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 05/14/2023]
Abstract
The effects of wood vinegar (WVG) on microbial activity and communities of activated sludge were investigated in a sequencing batch reactor (SBR) process. Results showed that the optimal WVG concentration was 4 μL/L when the pollutants removal efficiency and microbial activity were promoted by a WVG dilution factor of 1000. WVG could reduce the increase in microbial species richness, which led to a more notable variety of microbial species diversity. The enhanced microbial activity and communities were addressed to the promotion of 7 main classes of microbes in Proteobacteria, Bacteroidetes, Acidobacteria, and Nitrospirae phyla. The growth of ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB), and main genera of denitrifying bacteria (DNB), phosphorus-accumulating organisms (PAOs), and glycogen-accumulating organisms (GAOs) could be promoted by WVG, which improved the sewage treatment effectiveness in a SBR.
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Affiliation(s)
- Fang Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jingai Shao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of New Energy Science and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Haiping Yang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Dabin Guo
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhihua Chen
- School of Environment, Henan Normal University, No. 46, Jianshe Road, Xinxiang 453007, Henan, China
| | - Shihong Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hanping Chen
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of New Energy Science and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Chen Y, Lin T, Chen W. Enhanced removal of organic matter and typical disinfection byproduct precursors in combined iron-carbon micro electrolysis-UBAF process for drinking water pre-treatment. J Environ Sci (China) 2019; 78:315-327. [PMID: 30665651 DOI: 10.1016/j.jes.2018.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/15/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
The organic matter and two types of disinfection byproduct (DBP) precursors in micro-polluted source water were removed using an iron-carbon micro-electrolysis (ICME) combined with up-flow biological aerated filter (UBAF) process. Two pilot-scale experiments (ICME-UBAF and UBAF alone) were used to investigate the effect of the ICME system on the removal of organic matter and DBP precursors. The results showed that ICME pretreatment removed 15.6% of dissolved organic matter (DOM) and significantly improved the removal rate in the subsequent UBAF process. The ICME system removed 31% of trichloromethane (TCM) precursors and 20% of dichloroacetonitrile (DCAN) precursors. The results of measurements of the molecular weight distribution and hydrophilic fractions of DOM and DBP precursors showed that ICME pretreatment played a key role in breaking large-molecular-weight organic matter into low-molecular-weight components, and the hydrophobic fraction into hydrophilic compounds, which was favorable for subsequent biodegradation by UBAF. Three-dimensional fluorescence spectroscopy (3D-EEM) further indicated that the ICME system improved the removal of TCM and DCAN precursors. The biomass analysis indicated the presence of a larger and more diverse microbial community in the ICME-UBAF system than for the UBAF alone. The high-throughput sequencing results revealed that domination of the genera Sphingomonas, Brevundimonas and Sphingorhabdus contributed to the better removal of organic matter and two types of DBP precursors. Also, Nitrosomonas and Pseudomonas were beneficial for ammonia removal.
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Affiliation(s)
- Yinghan Chen
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Tao Lin
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.
| | - Wei Chen
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
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Xu P, Wei Y, Cheng N, Li S, Li W, Guo T, Wang X. Evaluation on the removal performance of dichloromethane and toluene from waste gases using an airlift packing reactor. JOURNAL OF HAZARDOUS MATERIALS 2019; 366:105-113. [PMID: 30502570 DOI: 10.1016/j.jhazmat.2018.11.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
Biological removal of dichloromethane (DCM) from pharmaceutical industry is limited by its recalcitrance. In this study, an airlift packing reactor (ALPR), which combined the suspended and fixed-film microbial growth system, was set up to remove DCM and co-existed toluene. The removal performance of the ALPR for DCM was greater than traditional airlift reactor (ALR). The maximum elimination capacity (ECmax) of the ALPR for DCM reached 108 g m-3 h-1 with removal efficiency (RE) of 41%, increased by 145% if compared to the ALR. The ECmax for toluene was 172 g m-3 h-1 with RE of 70%, decreased by 25% if compared to the ALR, which was mainly due to the higher liquid-phase biomass in the ALR. The results of high-throughput sequencing showed that the microbial composition on the packings of the ALPR had a large difference from its liquid-phase or the liquid-phase of the ALR. Gemmobacter, Rhizomicrobium, Chitinophaga, Vampirovibrio, and Fodinicurvata were genera with great abundance fixed on the packings and Rhizomicrobium, Chitinophaga, Vampirovibrio, and Fodinicurvata are first to be reported in VOCs biological removal. This study indicated that the ALPR can augment the microbial community and effectively improve the removal of recalcitrant VOCs.
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Affiliation(s)
- Peilun Xu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China
| | - Yang Wei
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China
| | - Nana Cheng
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China
| | - Sujing Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China
| | - Wei Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China
| | - Tianjiao Guo
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China.
| | - Xiangqian Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China; Technology Innovation and Training Center, Polytechnic Institute, Zhejiang University, Hangzhou, 310015, China.
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Yun J, Jung H, Ryu HW, Oh KC, Jeon JM, Cho KS. Odor mitigation and bacterial community dynamics in on-site biocovers at a sanitary landfill in South Korea. ENVIRONMENTAL RESEARCH 2018; 166:516-528. [PMID: 29957505 DOI: 10.1016/j.envres.2018.06.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/04/2018] [Accepted: 06/19/2018] [Indexed: 06/08/2023]
Abstract
Unpleasant odors emitted from landfills have been caused environmental and societal problems. For odor abatement, two pilot-scale biocovers were installed at a sanitary landfill site in South Korea. Biocovers PBC1 and PBC2 comprised a soil mixture with different ratios of earthworm casts as an inoculum source and were operated for 240 days. Their odor removal efficiencies were evaluated, and their bacterial community structures were characterized using pyrosequencing. In addition, the correlation between odor removability and bacterial community dynamics was assessed using network analysis. The removal efficiency of complex odor intensity in the two biocovers ranged from 81.1% to 97.8%. Removal efficiencies of sulfur-containing odors (hydrogen sulfide, methanethiol, dimethyl sulfide, and dimethyl disulfide), which contributed most to complex odor intensity, were greater than 91% in both biocovers. Despite the fluctuations in ambient temperature (-8.2 to 31.3 °C) and inlet complex odor intensity (10,000-42,748 of odor dilution ratio), biocovers PBC1 and PBC2 displayed stable deodorizing performance. A high ratio of earthworm casts as an inoculum source led to high odor removability during the first 25 days of operation, but different mixing ratios of earthworm casts did not significantly affect overall odor removability. A bacterial community analysis showed that Methylobacter, Arthrobacter, Acinetobacter, Rhodanobacter, and Pedobacter were the dominant genera in both biocovers. Network analysis results indicated that Steroidobacter, Cystobacter, Methylosarcina, Solirubrobacter, and Pseudoxanthomonas increased in relative abundance with time and were major contributors to odor removal, although these bacteria had a relatively low abundance compared to the overall bacterial community. These data contribute to a more comprehensive understanding of the relationship between bacterial community dynamics and deodorizing performance in biocovers.
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Affiliation(s)
- Jeonghee Yun
- Department of Environmental Science and Engineering, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Hyekyeng Jung
- Department of Environmental Science and Engineering, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Hee-Wook Ryu
- Department of Chemical Engineering, Soongsil University, Seoul 06978, Republic of Korea
| | - Kyung-Cheol Oh
- Green Environmental Complex Center, Suncheon 57992, Republic of Korea
| | - Jun-Min Jeon
- Green Environmental Complex Center, Suncheon 57992, Republic of Korea
| | - Kyung-Suk Cho
- Department of Environmental Science and Engineering, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
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Wu H, Yan H, Quan Y, Zhao H, Jiang N, Yin C. Recent progress and perspectives in biotrickling filters for VOCs and odorous gases treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 222:409-419. [PMID: 29883876 DOI: 10.1016/j.jenvman.2018.06.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 05/19/2018] [Accepted: 06/01/2018] [Indexed: 06/08/2023]
Abstract
Pollution caused by volatile organic compounds (VOCs) and odorous pollutants in the air can produce severe environmental problems. In recent years, the emission control of VOCs and odorous pollutants has become a crucial issue owing to the adverse effect on humans and the environment. For treating these compounds, biotrickling filter (BTF) technology acts as an environment friendly and cost-effective alternative to conventional air pollution control technologies. Besides, low concentration of VOCs and odorous pollutants can also be effectively removed using BTF systems. However, the VOCs and odorants removal performance by BTF may be limited by the hydrophobicity, toxicity, and low bioavailability of these pollutants. To solve these problems, this review summarizes the design, mechanism, and common analytical methods of recent BTF advances. In addition, the operating conditions, mass transfer, packing materials and microorganisms (which are the critical parameters in a BTF system) were evaluated and discussed in view of improving the removal performance of BTFs. Further research on these specific topics, together with the combination of BTF technology with other technologies, should improve the removal performance of BTFs.
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Affiliation(s)
- Hao Wu
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
| | - Huayu Yan
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
| | - Yue Quan
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
| | - Huazhang Zhao
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China
| | - Nanzhe Jiang
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
| | - Chengri Yin
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China.
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