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Zhang M, Lin K. Unintended polyhalogenated carbazole production during advanced oxidation of coking wastewater. JOURNAL OF HAZARDOUS MATERIALS 2024; 473:134649. [PMID: 38772108 DOI: 10.1016/j.jhazmat.2024.134649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/10/2024] [Accepted: 05/17/2024] [Indexed: 05/23/2024]
Abstract
Polyhalogenated carbazoles (PHCZs) are emerging as dioxin-like global pollutants, yet their environmental origins are not fully understood. This study investigates the application of the Fenton process in coking wastewater treatment, focusing on its dual role in carbazole removal and unintended PHCZ formation. The common halide ions (Cl- and Br-) in coking wastewater, especially Br- ions, exerted a notable impact on carbazole removal. Particularly, the influence of Br- ions was more significant, not only enhancing carbazole removal but also shaping the congener composition of PHCZ formation. Elevated halide ion concentrations were associated with the heightened formation of higher halogenated carbazoles. The Fenton reagent dosage ratio was identified as a crucial factor affecting the congener composition of PHCZs and their toxic equivalency value. The coexisting organic substance (i.e., phenol) in coking wastewater was observed to inhibit PHCZ formation, likely through competitive reactions with carbazole. Intriguingly, ammonium (NH4+) facilitated the generation of higher and mixed halogenated carbazoles, possibly due to the generation of nitrogen-containing brominating agents with stronger bromination capacity. This study underscores the importance of a comprehensive assessment, considering both substrate removal and potential byproduct formation, when employing the Fenton process for saline wastewater treatment.
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Affiliation(s)
- Meng Zhang
- Fujian Provincial Key Laboratory for Coast Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Kunde Lin
- Fujian Provincial Key Laboratory for Coast Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.
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Liu Q, Li Y, Sun Y, Xie K, Zeng Q, Hao Y, Yang Q, Pu Y, Shi S, Gong Z. Deterioration of sludge characteristics and promotion of antibiotic resistance genes spread with the co-existing of polyvinylchloride microplastics and tetracycline in the sequencing batch reactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167544. [PMID: 37797771 DOI: 10.1016/j.scitotenv.2023.167544] [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: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/30/2023] [Indexed: 10/07/2023]
Abstract
With the continuous increase in microplastics (MPs) and tetracycline (TC) entering wastewater treatment plants (WWTPs) along with sewage, the co-existence of MPs and TC in the biological treatment of wastewater has attracted extensive attention. This study investigated the effect of 1 mg/L polyvinyl chloride (PVC) MPs and 100 ng/L TC co-existing on sequencing batch reactors (SBRs) (S2) treating phenol wastewater in contrast to the control with TC alone (S1). The phenol removal efficiency was significantly inhibited by the co-existence of PVC MPs and TC. Sludge characteristics were also distinctively influenced. The decreased zone sludge velocity (ZSV) and increased sludge volume index (SVI) indicated that the combined effect of PVC MPs and TC deteriorated sludge settleability, which had positive and negative linear correlations with extracellular polymeric substances (EPS) content and the protein (PN)/polysaccharide (PS) ratio, respectively. Moreover, the decreased and increased relative abundances of potential phenol-degraders and antibiotic resistance gene (ARG) carriers may elucidate the inhibition of phenol removal and promotion of ARGs propagation with the co-occurrence of PVC MPs and TC. In addition, the enhanced potential ARGs hosts, loss of the EPS protective effect, and increased membrane permeability induced by reactive oxygen species (ROS) jointly promoted ARGs dissemination in the co-existence of PVC MPs and TC. Notably, the co-occurrence of ARGs and mobile genetic element (MGEs) indicated that the co-existence of PVC MPs and TC promoted the spread of some transposase-associated ARGs mediated by horizontal gene transfer (HGT).
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Affiliation(s)
- Qiangwei Liu
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yuxin Li
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yanan Sun
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Kunpeng Xie
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Qianzhi Zeng
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yiming Hao
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Qing Yang
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Yunhong Pu
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China
| | - Shengnan Shi
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China..
| | - Zheng Gong
- School of Life Sciences, Liaoning Normal University; Key Laboratory of Plant Biotechnology of Liaoning Province, Dalian, Liaoning 116081, PR China..
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Sahoo MM, Sahoo NK, Daverey A, Raut S. Co-metabolic biodegradation of 4-bromophenol in a mixture of pollutants system by Arthrobacter chlorophenolicus A6. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:602-614. [PMID: 35059927 DOI: 10.1007/s10646-021-02508-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/19/2021] [Indexed: 06/14/2023]
Abstract
Brominated phenols are listed as priority pollutants together with nitrophenol and chlorophenol are the key components of paper pulp wastewater. However, the biodegradation of bromophenol in a mixed substrate system is very scanty. In the present investigation, simultaneous biodegradation kinetics of three substituted phenols 4-bromophenol (4-BP), 4-nitrophenol (4-NP), and 4-chlorophenol (4-CP) were investigated using Arthrobacter chlorophenolicus A6. A 23 full factorial design was applied with varying 4-BP and 4-CP from 75-125 mg/L and 4-NP from 50-100 mg/L. Almost complete degradation of this mixture of substituted phenols was achieved at initial concentration combinations of 125, 125, and 100 mg/L of 4-CP, 4-BP, and 4-NP, respectively, in 68 h. Statistical analysis of the results revealed that, among the three variables, 4-NP had the most prominent influence on the degradation of both 4-CP and 4-BP, while the concentration of 4-CP had a strong negative interaction effect on the biodegradation of 4-NP. Irrespective of the concentration levels of these three substrates, 4-NP was preferentially biodegraded over 4-CP and 4-BP. Furthermore, 4-BP biodegradation rates were found to be higher than those of 4-CP, followed by 4-NP. Besides, the variation of the biomass yield coefficient of the culture was investigated at different initial concentration combinations of these substituted phenols. Although the actinomycetes consumed 4-NP at a faster rate, the biomass yield was very poor. This revealed that the microbial cells were more stressed when grown on 4-NP compared to 4-BP and 4-CP. Overall, this study revealed the potential of A. chlorophenolicus A6 for the degradation of 4-BP in mixed substrate systems.
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Affiliation(s)
- Mitali Madhusmita Sahoo
- Centre for Biotechnology, Siksha 'O'Anusandhan, Deemed to be University, Bhubaneswar, 751 030, Odisha, India
| | - Naresh Kumar Sahoo
- Department of Chemistry, Environmental Science and Technology Program, Institute of Technical Education and Research, Siksha'O'Anusandhan, Deemed to be University, Bhubaneswar, 751 030, Odisha, India.
| | - Achlesh Daverey
- School of Environment & Natural Resources, Doon University, Dehradun, 248012, Uttarakhand, India
| | - Sangeeta Raut
- Centre for Biotechnology, Siksha 'O'Anusandhan, Deemed to be University, Bhubaneswar, 751 030, Odisha, India
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Liu Y, Li Y, Yuan X, Ren R, Lv Y. A self-prepared graphene oxide/sodium alginate aerogel as biological carrier to improve the performance of a heterotrophic nitrifier. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Xie J, Fan W, Cui H, Feng N, Wang G, Wang H, Liu X, Qiu G, Wu H. A novel highly dispersed tetra-metal nano heterogeneous ozone catalyst derived from microbial adsorption and in situ pyrolysis. NANOTECHNOLOGY 2021; 32:065701. [PMID: 33210616 DOI: 10.1088/1361-6528/abb1ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In recent years, the pyrolysis of microbial biomasses that adsorb various metal ions has enabled the preparation of carbon-based polymetallic nanomaterials with excellent electrocatalytic and electrical energy storage properties. However, the preparation of ozone catalysts by this technique and the corresponding catalytic oxidation mechanism are still unclear. In this study, an Escherichia coli strain (BL21) was used for tetra-metal (Cu, Fe, Mn and Al) absorption and the obtained microbial biomass was pyrolyzed under the protection of a nitrogen flow at 700 °C and activated at 900 °C to prepare a microbial-char-based tetra-metal ozone catalyst (MCOC). This was used to degrade phenol and coking wastewater and exhibited a strong catalytic capability for coking wastewater, whose chemical oxygen demand removal efficiency of 70.86% is 16.7% higher than that of pure ozone and 14.67%, 7.21% and 3.58% higher than that of three commercial catalysts, respectively. It also improved the efficiency of ozonation for phenol by 33%. The MCOC was characterized by x-ray diffraction, x-ray photoelectron spectroscopy, scanning electron microscopy-energy-dispersive spectroscopy, transmission electron microscopy and other methods. The results demonstrated that the spherical metal nanoparticles had sizes ranging from 3 nm to 7 nm and that crystals of Fe2O3 and Fe3P were observed. The study showed that the MCOC promoted the production of more hydroxyl radicals and superoxides from ozone, which attack organics. The oxygen vacancies of the catalyst were also investigated. It was proved that the Lewis acid sites on the surface of metal oxides are the active centers of ozone decomposition. Therefore, this work provides a new method for the synthesis of multi-metal nanocomposites and expands the application of biosynthetic nanomaterials.
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Affiliation(s)
- Jianping Xie
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Wei Fan
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Hao Cui
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, People's Republic of China
| | - Ningning Feng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Guozhen Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Hui Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Xinxing Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
| | - Haiyan Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China
- Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, People's Republic of China
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Zhang C, Li J, Wu X, Long Y, An H, Pan X, Li M, Dong F, Zheng Y. Rapid degradation of dimethomorph in polluted water and soil by Bacillus cereus WL08 immobilized on bamboo charcoal-sodium alginate. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122806. [PMID: 32497856 DOI: 10.1016/j.jhazmat.2020.122806] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/29/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
The presence of hazardous dimethomorph residues in the environment poses a threat to birds, aquatic organisms and mammals. The novel pure strain Bacillus cereus WL08 responsible for detoxifying dimethomorph was isolated from dimethomorph-polluted soils. The immobilized system of WL08 was developed using bamboo charcoal (BC) and sodium alginate (SA). Immobilization significantly improved tolerance and stability of strain WL08. Under optimal conditions of pH 7.0 and 30 ℃, free and immobilized WL08 degraded 66.95% and 96.88% of 50 mg/L dimethomorph within 72 h, respectively. Moreover, strain WL08 effectively degraded dimethomorph to simple products which were lower toxic than dimethomorph. In a continuous reactor system, immobilized WL08 removed 85.61% of dimethomorph for 30 d at an influent concentration of 50-100 mg/L. In the field soil sprayed with 4.20 kg a.i./ha 80% dimethomorph water dispersible granule (WDG) was treated by immobilized WL08, the lower half-life (1.93 d) was observed, as compared with free WL08 (4.28 d) and natural dissipation (23.82 d). Immobilized WL08 can be considered as a tool for the removal of dimethomorph in water-soil systems. This study provides a feasible microbe-based strategy for bioremediation of dimethomorph-polluted environments.
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Affiliation(s)
- Cheng Zhang
- Department of Plant Protection, Institute of Corp Protection, Research Center for Engineering Technology of Kiwifruit, Guizhou Engineering Research Center of Fruit Crops, College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, PR China; Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, College of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jiaohong Li
- Department of Plant Protection, Institute of Corp Protection, Research Center for Engineering Technology of Kiwifruit, Guizhou Engineering Research Center of Fruit Crops, College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, PR China
| | - Xiaomao Wu
- Department of Plant Protection, Institute of Corp Protection, Research Center for Engineering Technology of Kiwifruit, Guizhou Engineering Research Center of Fruit Crops, College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, PR China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
| | - Youhua Long
- Department of Plant Protection, Institute of Corp Protection, Research Center for Engineering Technology of Kiwifruit, Guizhou Engineering Research Center of Fruit Crops, College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, PR China
| | - Huaming An
- Department of Plant Protection, Institute of Corp Protection, Research Center for Engineering Technology of Kiwifruit, Guizhou Engineering Research Center of Fruit Crops, College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, PR China
| | - Xinglu Pan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Ming Li
- Department of Plant Protection, Institute of Corp Protection, Research Center for Engineering Technology of Kiwifruit, Guizhou Engineering Research Center of Fruit Crops, College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, PR China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
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Li H, Meng F, Duan W, Lin Y, Zheng Y. Biodegradation of phenol in saline or hypersaline environments by bacteria: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109658. [PMID: 31520955 DOI: 10.1016/j.ecoenv.2019.109658] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 07/27/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
With the continuous demand from industry for chemical raw materials, a large amount of high-salinity wastewater containing phenol is discharged into the aquatic environment, and the leakage of dangerous chemicals into the sea may lead to phenol pollution of the ocean. Phenol is a common chemical posing serious environmental hazard. Biodegradation is an effective, low-cost, environment-friendly method of removing phenol from water, but in hypersaline environments, traditional freshwater organisms are less efficacious. Here, at least 17 genera of bacteria from three phyla are found that can degrade phenol in different saline environments. The sources and taxonomy of halotolerant and halophilic bacteria are reviewed. Moreover, the pathway of phenol removal, kinetics of biodegradation, influencing factors, and recent treatment processes of wastewater are discussed.
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Affiliation(s)
- Hao Li
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China
| | - Fanping Meng
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Weiyan Duan
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China
| | - Yufei Lin
- National Marine Hazard Mitigation Service, Ministry of Natural Resource of the People's Republic of China, Beijing, 100194, China
| | - Yang Zheng
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; National Marine Hazard Mitigation Service, Ministry of Natural Resource of the People's Republic of China, Beijing, 100194, China
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Shi S, Liu J, Xu J, Zeng Q, Hou Y, Jiang B. Effects of biochar on the phenol treatment performance and microbial communities shift in sequencing batch reactors. WATER RESEARCH 2019; 161:1-10. [PMID: 31170668 DOI: 10.1016/j.watres.2019.05.097] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 06/09/2023]
Abstract
The extensive application of biochar (BC) attracts concerns regarding its environmental effect. Wastewater treatment systems are potential BC recipients; however, the impacts of BC on these systems are still unclear. In this study, effects of BC on the phenol treatment performance and shift in microbial communities in sequencing batch reactor (SBR) were investigated. The phenol degradation rates were enhanced in all BC-treated SBRs during the whole operation due to promotion of key enzymes involved in phenol degradation. The decrease in abundance of intracellular reactive oxygen species (ROS) in SBRs indicated that BC protected microorganisms by ameliorating phenol toxicity, leading to a decrease in the secretion of extracellular polymeric substances (EPS). The functional groups, protein (C=O, -CO-NH), polysaccharide (C-OH, C-O-C, C-O), and nucleic acids (O-P-O) associated bonds of EPS decreased or disappeared in BC-treated SBRs. Miseq sequencing revealed significant decrease in bacterial diversity and remarkable changes in the bacterial community structure in BC-treated SBRs. Abundances of Comamonas and Cupriavidus increased significantly upon BC exposure, which contributed to phenol degradation. Treatment with relatively high BC dosage exhibited considerable inhibition on Thauera. Canonical correspondence analysis (CCA) indicated that the shift in abundances of these genera was closely associated with BC dosage. This study suggested that BC exerted protective effects on sludge microbes of phenol wastewater treatment systems, while it affected the bacterial community structure and diversity at test concentrations. Thus, this study elucidates the comprehensive effects of BC on wastewater treatment process.
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Affiliation(s)
- Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Jin Xu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Qianzhi Zeng
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Yuan Hou
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian, 116081, China; Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, China.
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Wei C, Wu H, Kong Q, Wei J, Feng C, Qiu G, Wei C, Li F. Residual chemical oxygen demand (COD) fractionation in bio-treated coking wastewater integrating solution property characterization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 246:324-333. [PMID: 31185319 DOI: 10.1016/j.jenvman.2019.06.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 05/23/2019] [Accepted: 06/01/2019] [Indexed: 05/15/2023]
Abstract
The refractory nature of residual COD in bio-treated coking wastewater (BTCW) creates barriers for its further treatment and reclamation. It is necessary to fractionate the residual COD in BTCW associated with characterization of solution properties. In this paper, a stepwise process composed of membrane filtration, coagulation, adsorption and ozonation was proposed to fractionate residual COD in the BTCW, in which the COD was stepwise reduced to near zero. In addition, the correlation between COD and water quality indexes as well as solution properties were discussed together with a safety assessment of the water quality. Results showed that the residual COD fractionation percentage contributed by suspended solids, colloids, dissolved organics and reductive inorganic substances in the BTCW was 43.7%, 22.1%, 26.2% and 4.9%, respectively. By stepwise fractionating of these substances, the residual COD was reduced from 168.8 to 5.2 mg L-1, and the UV254 value decreased from 1.90 to 0.15 cm-1. In addition, the particle size of the dominant substances contributing to the residual COD was smaller than 450 nm. Among these substances, the hydrophobic fraction accounted for 78.66% (in the term of TOC). Three-dimensional excitation-emission matrix (3D-EEM) analysis showed that hydrophobic neutral substances (HON) were the main fluorescence constituent in the BTCW, which was highly removable by adsorption. The residual COD after adsorption was mainly composed of reductive inorganic substances. Apart from pursuit of high COD removal rates, more emphasis should be given to the removal of toxic COD. Correlations were observed between the residual COD and water quality indicators as well as solution properties, providing a guideline for optimized removal of residual COD in the BTCW. In summary, these results gave a referential information about the nature of residual COD in the BTCW for the selection of advanced treatment technologies and the management of water quality safety.
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Affiliation(s)
- Cong Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Hengping Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Qiaoping Kong
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Jingyue Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Chunhua Feng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Guanglei Qiu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.
| | - Fusheng Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
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Shi S, Hou Y, Ning S, Xu J, Liu J, Zeng Q. Enhanced treatment performance of phenol wastewater by electricity-assisted Burkholderia sp. ssn-2 and its enhanced mechanism. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.100263] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Li Q, Lu H, Yin Y, Qin Y, Tang A, Liu H, Liu Y. Synergic effect of adsorption and biodegradation enhance cyanide removal by immobilized Alcaligenes sp. strain DN25. JOURNAL OF HAZARDOUS MATERIALS 2019; 364:367-375. [PMID: 30384247 DOI: 10.1016/j.jhazmat.2018.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/08/2018] [Accepted: 10/02/2018] [Indexed: 06/08/2023]
Abstract
A high efficiency and stability polyurethane-foam (PUF)-immobilized cell system was constructed to remove cyanide based on simultaneous adsorption and biodegradation (SAB). The performance of the PUF-immobilized system was evaluated by comparison with the freely suspended cell system. The SAB system exhibited more effective and robust, and could still remain degradation activity even at 40 °C or pH 11.0. The SAB system completely removed 500 mg CN-/L within 8 h at 30 °C, pH 8.0, and 120 rpm, whereas 12 h were required for the free cells system. Moreover, the SAB system showed apparent superiority in removing higher concentration cyanide up to 1200 mg CN-/L. A continuously stirred tank bioreactor (CSTR) was successfully designed and steadily operated with approximately 85% of the total average removal efficiency for 52 days at an influent cyanide concentration of 100-200 mg/L, which demonstrated a favorable reliability. Cyanide removal process could be well described using a pseudo first-order model, and the higher apparent rate constants (k) of the immobilized cells showed the synergic effect of adsorption and biodegradation significantly enhanced cyanide removal. Preliminarily, it was found that the foam characteristic might play a not negligible role on the cyanide-degrading enzyme expression of strain DN25 in the SAB system.
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Affiliation(s)
- Qingyun Li
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefining, Nanning, 530003, Guangxi, PR China
| | - Hui Lu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China
| | - Yexing Yin
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China
| | - Yiming Qin
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China
| | - Aixing Tang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China
| | - Haibo Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China
| | - Youyan Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefining, Nanning, 530003, Guangxi, PR China; Guangxi Colleges and Universities Key Laboratory of New Technology and Application in Resource Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, PR China.
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Wu D, Yi X, Tang R, Feng C, Wei C. Single microbial fuel cell reactor for coking wastewater treatment: Simultaneous carbon and nitrogen removal with zero alkaline consumption. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 621:497-506. [PMID: 29195198 DOI: 10.1016/j.scitotenv.2017.11.262] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/22/2017] [Accepted: 11/23/2017] [Indexed: 06/07/2023]
Abstract
The use of several individual reactors for sequential removal of organic compounds and nitrogen, in addition to the required alkaline addition in aerobic reactors, remain outstanding technical challenges to the traditional biological treatment of coking wastewater. Here, we report the utilization of a single microbial fuel cell (MFC) reactor that performs simultaneous carbon and nitrogen removal with zero alkaline consumption, as evidenced by the results of the batch-fed and continuous-flow experiments. The MFC exhibited faster reaction kinetics for COD and total nitrogen (TN) removal than the same configured reactor analogous to the traditional aerobic biological reactor (ABR). At a hydraulic retention time (HRT) of 125 h, the efficiencies of COD and TN removal in the MFC reached 83.8±3.6% and 97.9±2.1%, respectively, much higher than the values of 73.8±2.9% and 50.2±5.0% obtained in the ABR. Furthermore, the degradation in the MFC of the main organic components, including phenolic compounds (such as phenol, 2-methylphenol, 3-methylphenol, 4-methylphenol, and 2,4-dimethlyphenol) and nitrogenous heterocyclic compounds (such as quinolone, pyridine, indole, and isoquinolone) was greater than that in the ABR. The enhancing effect was attributed to the ability of the MFC to self-adjust the pH. It was also manifested by the increased abundances of heterotrophs, nitrifiers, and denitrifiers in the MFC. The correlations between the current density and the rates of COD and TN removal suggest that the extent of the current from the anode to the cathode is a critical parameter for the overall performance of MFCs in the treatment of coking wastewater.
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Affiliation(s)
- Di Wu
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Xiaoyun Yi
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Rong Tang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Chunhua Feng
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou 510006, PR China.
| | - Chaohai Wei
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
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13
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Ranjan B, Pillai S, Permaul K, Singh S. A novel strategy for the efficient removal of toxic cyanate by the combinatorial use of recombinant enzymes immobilized on aminosilane modified magnetic nanoparticles. BIORESOURCE TECHNOLOGY 2018; 253:105-111. [PMID: 29331825 DOI: 10.1016/j.biortech.2017.12.087] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/21/2017] [Accepted: 12/22/2017] [Indexed: 06/07/2023]
Abstract
Cyanase detoxifies cyanate by transforming it to ammonia and carbon dioxide in a bicarbonate-dependent reaction, however, dependence on bicarbonate limits its utilization in large-scale applications. A novel strategy was therefore developed for overcoming this bottleneck by the combined application of cyanase (rTl-Cyn) and carbonic anhydrase (rTl-CA). The synergistic effect of rTl-Cyn and rTl-CA could reduce the dependence of bicarbonate by 80%, compared to using rTl-Cyn alone. Complete degradation of cyanate (4 mM) was achieved with buffered conditions and 85 ± 5% degradation with industrial wastewater sample, when 20 U of rTl-Cyn was applied. Furthermore, a similar percentage of degradation was achieved using 80% less bicarbonate, when rTl-Cyn and rTl-CA were used together under identical conditions. In addition, rTl-Cyn and rTl-CA were immobilized onto the magnetic nanoparticles and their catalytic activity, stability and reusability were also evaluated. This is the first report on the synergistic biocatalysis by rTl-Cyn and rTl-CA, for cyanate detoxification.
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Affiliation(s)
- Bibhuti Ranjan
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South Africa
| | - Santhosh Pillai
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South Africa
| | - Kugenthiren Permaul
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South Africa
| | - Suren Singh
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South Africa.
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14
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Zhu J, Chen L, Zhang Y, Zhu X. Revealing the anaerobic acclimation of microbial community in a membrane bioreactor for coking wastewater treatment by Illumina Miseq sequencing. J Environ Sci (China) 2018; 64:139-148. [PMID: 29478633 DOI: 10.1016/j.jes.2017.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/29/2017] [Accepted: 06/01/2017] [Indexed: 06/08/2023]
Abstract
The dynamic change of microbial community during sludge acclimation from aerobic to anaerobic in a MBR for coking wastewater treatment was revealed by Illumina Miseq sequencing in this study. The diversity of both Bacteria and Archaea showed an increase-decrease trajectory during acclimation, and exhibited the highest at the domestication interim. Ignavibacteria changed from a tiny minority (less than 1%) to the dominant bacterial group (54.0%) along with acclimation. The relative abundance of Betaproteobacteria kept relatively steady, as in this class some species increased coupled with some other species decreased during acclimation. The dominant Archaea shifted from Halobacteria in initial aerobic sludge to Methanobacteria in the acclimated anaerobic sludge. The dominant bacterial and archaeal groups in different acclimation stages were indigenous microorganisms in the initial sludge, though some of them were very rare. This study supported that the species in "rare biosphere" might eventually become dominant in response to environmental change.
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Affiliation(s)
- Jiadi Zhu
- School of Environment, Tsinghua University, Beijing 100084, China.
| | - Lujun Chen
- School of Environment, Tsinghua University, Beijing 100084, China; Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314050, China
| | - Yan Zhang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China.
| | - Xiaobiao Zhu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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15
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Yang W, He C, Wang X, Zhang Y, Cheng Z, Dai B, Zhang L. Disolved organic matter (DOM) removal from bio-treated coking wastewate using a new polymeric adsorbent modified with dimethylamino groups. BIORESOURCE TECHNOLOGY 2017; 241:82-87. [PMID: 28550777 DOI: 10.1016/j.biortech.2017.05.106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/13/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
In the current study a new recyclable aminated hyper-cross-linked polymeric adsorbent (A-HPA) was prepared for effective removal of DOM from BTCW. Possibly benefited from its unique structure of polystyrene matrix, sufficient aminated groups and high specific surface area, A-HPA could remove DOM from BTCW through the synergetic effect of π-π interactions, acid-base interactions and micropore filling, and exhibited the highest removal efficiency than the other adsorbents. Moreover, the exhausted A-HPA was amenable to effective regeneration by using acid and alkaline solution, allowing for repeated use with a constant removal efficiency. Field application of continuous 3-year fixed-bed runs demonstrated that A-HPA is capable of effectively removing DOM from BTCW with no significant capacity loss, and the treated effluent can be partially used as recycled water in production. All the above results demonstrated that A-HPA adsoption could serve as a good choice for the advanced treatment of bio-treated sewage effluent.
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Affiliation(s)
- Wenlan Yang
- School of the Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China.
| | - Chengda He
- School of the Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Xiaozhi Wang
- School of the Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Ya Zhang
- School of the Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Zhipeng Cheng
- School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, PR China
| | - Benlin Dai
- School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, PR China
| | - Lili Zhang
- School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, PR China
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16
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Joshi DR, Zhang Y, Gao Y, Liu Y, Yang M. Biotransformation of nitrogen- and sulfur-containing pollutants during coking wastewater treatment: Correspondence of performance to microbial community functional structure. WATER RESEARCH 2017; 121:338-348. [PMID: 28570873 DOI: 10.1016/j.watres.2017.05.045] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/18/2017] [Accepted: 05/21/2017] [Indexed: 06/07/2023]
Abstract
Although coking wastewater is generally considered to contain high concentration of nitrogen- and sulfur-containing pollutants, the biotransformation processes of these compounds have not been well understood. Herein, a high throughput functional gene array (GeoChip 5.0) in combination with Illumina MiSeq sequencing of the 16S rRNA gene were used to identify microbial functional traits and their role in biotransformation of nitrogen- and sulfur-containing compounds in a bench-scale aerobic coking wastewater treatment system operated for 488 days. Biotransformation of nitrogen and sulfur-containing pollutants deteriorated when pH of the bioreactor was increased to >8.0, and the microbial community functional structure was significantly associated with pH (Mantels test, P < 0.05). The release of ammonia nitrogen and sulfate was correlated with both the taxonomic and functional microbial community structure (P < 0.05). Considering the abundance and correlation with the release of ammonia nitrogen and sulfate, aromatic dioxygenases (e.g. xylXY, nagG), nitrilases (e.g. nhh, nitrilase), dibenzothiophene oxidase (DbtAc), and thiocyanate hydrolase (scnABC) were important functional genes for biotransformation of nitrogen- and sulfur-containing pollutants. Functional characterization of taxa and network analysis suggested that Burkholderiales, Actinomycetales, Rhizobiales, Pseudomonadales, and Hydrogenophiliales (Thiobacillus) were key functional taxa. Variance partitioning analysis showed that pH and influent ammonia nitrogen jointly explained 25.9% and 35.5% of variation in organic pollutant degrading genes and microbial community structure, respectively. This study revealed a linkage between microbial community functional structure and the likely biotransformation of nitrogen- and sulfur-containing pollutants, along with a suitable range of pH (7.0-7.5) for stability of the biological system treating coking wastewater.
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Affiliation(s)
- Dev Raj Joshi
- 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
| | - Yu Zhang
- 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.
| | - Yinxin Gao
- 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
| | - Yuan Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Min Yang
- 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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17
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Zang Y, Guo N, Jiao J, Wang X, Gai Q, Xu W, Fu Y. Application of magnetically immobilized edible fungus for the biotransformation of panax notoginseng saponin Rb1 to Rd and Rg3. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1061-1062:306-313. [DOI: 10.1016/j.jchromb.2017.07.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 07/10/2017] [Accepted: 07/21/2017] [Indexed: 11/15/2022]
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18
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Liu J, Shi S, Ji X, Jiang B, Xue L, Li M, Tan L. Performance and microbial community dynamics of electricity-assisted sequencing batch reactor (SBR) for treatment of saline petrochemical wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:17556-17565. [PMID: 28597382 DOI: 10.1007/s11356-017-9446-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 06/01/2017] [Indexed: 06/07/2023]
Abstract
High-salinity wastewater is often difficult to treat by common biological technologies due to salinity stress on the bacterial community. Electricity-assisted anaerobic technologies have significantly enhanced the treatment performance by alleviating the impact of salinity stress on the bacterial community, but electricity-assisted aerobic technologies have less been reported. Herein, a novel bio-electrochemistry system has been designed and operated in which a pair of stainless iron mesh-graphite plate electrodes were installed into a sequencing batch reactor (SBR, designated as S1) to strengthen the performance of saline petrochemical wastewater under aerobic conditions. The removal efficiency of phenol and chemical oxygen demand (COD) in S1 were 94.1 and 91.2%, respectively, on day 45, which was clearly higher than the removal efficiency of a single SBR (S2) and an electrochemical reactor (S3), indicating that a coupling effect existed between the electrochemical process and biodegradation. A certain amount of salinity (≤8000 mg/L) could enhance the treatment performance in S1 but weaken that in S2. Illumina sequencing revealed that microbial communities in S1 on days 45 and 91 were richer and more diverse than in S2, which suggests that electrical stimulation could enhance the diversity and richness of the microbial community, and reduce the negative effect of salinity on the microorganisms and enrich some salt-adapted microorganisms, thus improve the ability of S1 to respond to salinity stress. This novel bio-electrochemistry system was shown to be an alternative technology for the high saline petrochemical wastewater.
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Affiliation(s)
- Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, China.
| | - Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
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19
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Song L, Shao Y, Ning S, Tan L. Performance of a newly isolated salt-tolerant yeast strain Pichia occidentalis G1 for degrading and detoxifying azo dyes. BIORESOURCE TECHNOLOGY 2017; 233:21-29. [PMID: 28258992 DOI: 10.1016/j.biortech.2017.02.065] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 05/07/2023]
Abstract
A salt-tolerant yeast named G1 which could decolorize various azo dyes was recently isolated and identified as Pichia occidentalis. Systematic researches on characterization, degradation pathway, detoxification effects and enzymes analysis of this yeast were done. The results showed that the optimal metabolism and growth parameters for strain G1 were: 2.0gL-1 glucose, 0.6gL-1 ammonium sulfate, 0.08gL-1 yeast extract, 30gL-1 NaCl, 160rmin-1, 30°C and pH 5.0. More than 98% of 50mgL-1 Acid Red B (ARB) could be decolorized within 16h under the optimal conditions. Additionally, strain G1 degraded and obviously detoxified ARB through a possible pathway successively consisting of decolorization, deamination/desulfonation and TCA cycle processes. Moreover, NADH-DCIP reductase was estimated as the key reductase for decolorization and ligninases including lignin peroxidase, manganese peroxidase and laccase were important oxidoreductases for further degradation of decolorization intermediates.
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Affiliation(s)
- Li Song
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Yifan Shao
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Shuxiang Ning
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
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20
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Xue L, Liu J, Li M, Tan L, Ji X, Shi S, Jiang B. Enhanced treatment of coking wastewater containing phenol, pyridine, and quinoline by integration of an E-Fenton process into biological treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9765-9775. [PMID: 28251539 DOI: 10.1007/s11356-017-8644-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
In this study, the pyridine and quinoline could be cometabolically degraded by phenol-cultivated Comamonas sp. strain JB(strain JB). The integration of magnetically immobilized cells of JB and an E-Fenton process into one entity has been designed to prepare a novel integration system to improve the treatment efficiency of phenol, pyridine, and quinoline in coking wastewater. The optimal pH for the integration system was 3.5. Degradation rates of phenol, pyridine, quinoline, and COD by the integration system were significantly exceeded the sum degradation rates of the single E-Fenton process and magnetically immobilized cells at the optimal voltage of 1 V. During the 6 cycles, the integration system still showed higher degradation rates than that by the single magnetically immobilized cells for all the compounds. These findings demonstrated that a synergistic effect existed between the biological treatment and the E-Fenton process, and the applied voltage in the integration system played the key roles in the synergistic effect, which not only electrogenerated H2O2 but also improved the activity of phenol hydroxylase and strain JB concentration.
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Affiliation(s)
- Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
| | - Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, China.
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Jiang B, Du C, Shi S, Tan L, Li M, Liu J, Xue L, Ji X. Enhanced treatment performance of coking wastewater and reduced membrane fouling using a novel EMBR. BIORESOURCE TECHNOLOGY 2017; 229:39-45. [PMID: 28107720 DOI: 10.1016/j.biortech.2016.12.116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/30/2016] [Accepted: 12/31/2016] [Indexed: 06/06/2023]
Abstract
A novel EMBR (electric field applied in MBR) by placing stainless steel mesh cathode inside a flat membrane module and stainless steel mesh anode outside the module was built and operated to enhance the treatment performance of coking wastewater containing phenol, pyridine and quinoline and reduce the membrane fouling. The degradation rates of COD, phenol, pyridine and quinoline in EMBR with electric field (reactor A) were significantly higher than the sum of EMBR without electric field (reactor B) and only electro-catalytic degradation during the long-term treatment, confirming that a coupling effect was existed between biodegradation and electro-catalytic degradation process. Illumina sequencing data revealed that bacterial community was richer and more diverse in reactor A. Comamonas strain JB as the inoculums was the most dominant genus in each reactor and electric field applied in reactor A further improved the abundance of strain JB. The membrane fouling in reactor A was reduced.
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Affiliation(s)
- Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Cong Du
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian 116081, China
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Jiang B, Shi S, Song L, Tan L, Li M, Liu J, Xue L. Efficient treatment of phenolic wastewater with high salinity using a novel integrated system of magnetically immobilized cells coupling with electrodes. BIORESOURCE TECHNOLOGY 2016; 218:108-114. [PMID: 27347805 DOI: 10.1016/j.biortech.2016.06.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 06/17/2016] [Accepted: 06/19/2016] [Indexed: 06/06/2023]
Abstract
A novel integrated system in which magnetically immobilized cells coupled with a pair of stainless iron meshes-graphite plate electrodes has been designed and operated to enhance the treatment performance of phenolic wastewater under high salinity. With NaCl concentration increased, phenol, o-cresol, m-cresol, p-cresol and COD removal rates by integrated system increased significantly, which were obviously higher than the sum of removal rates by single magnetically immobilized cells and electrode reaction. This integrated system exhibited higher removal rates for all the compounds than that by single magnetically immobilized cells during six cycles for reuse, and it still performed better, even when the voltage was cut off. These results indicated that there was a coupling effect between biodegradation and electrode reaction. The investigation of phenol hydroxylase activity and cells concentration confirmed that electrode reaction played an important role in this coupling effect.
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Affiliation(s)
- Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
| | - Lun Song
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian 116081, China
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