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Li X, Feng Y, Wang X, Chen H, Qiu L, Yu Y. Advanced degradation of refractory organic compounds in electroplating wastewater by an in-situ electro-catalytic biological coupling reactor: Removal performance, microbial community and possible mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167299. [PMID: 37742966 DOI: 10.1016/j.scitotenv.2023.167299] [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: 07/08/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
A high-efficiency treatment system for advanced degradation of refractory organic compounds such as saccharin sodium (SS) and polyethylene glycol 6000 (PEG 6000) in electroplating wastewater was proposed, which coupled ion exchange, electrocatalysis, and microbial interactions through ion exchange particle electrode (IEPE) in a reactor, named in-situ electro-catalytic biological coupling reactor (i-SECBCR). A small-scale experimental test system was established and a feasibility investigation was conducted under the condition of 1.248 L/h continuous flow. The results revealed that (1) the i-SECBCR showed higher average removal rates of SS, PEG 6000, COD and NH4+-N, i.e. 88.48 %, 41.26 %, 66.81 % and 51.61 %,which meant an increase by 5.04 %, 12.05 %, 0.46 %, and 34.50 %, respectively, compared with BAF; (2) the optimal current intensity (CI) of i-SECBCR for simultaneous removal of SS, PEG 6000, COD and NH4+-N was 0.40 mA cm-2; (3) Rhodobacter, Defluviimonas, unclassified_f__Microscillaceae, Pseudoxanthomonas, Novosphingobium, and unclassified_f__Xanthobacteraccae accounted for the main bacterial community in i-SECBCR; (4) the possible degradation mechanism was attributed mainly to the synergistic effect of ion exchange, electrocatalytic oxidation and biology. Therefore, the i-SECBCR was suitable to simultaneously advanced remove SS, PEG 6000, COD and NH4+-N in electroplating wastewater.
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Affiliation(s)
- Xinxin Li
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Yan Feng
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China.
| | - Xinwei Wang
- China Urban Construction Design & Research Institute Co. Ltd (Shan Dong), Jinan 250022, China
| | - Hao Chen
- Environmental Engineering Co., Ltd., Shandong Academy of Environmental Science, Jinan 250001, China
| | - Liping Qiu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Yanzhen Yu
- School of Civil Engineering and Architecture, Qilu Institute of Technology, Jinan 250022, China
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2
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Xu N, Zhou Z, Chen B, Zhang Z, Zhang J, Li Y, Lu T, Sun L, Peijnenburg WJGM, Qian H. Effect of chlorpyrifos on freshwater microbial community and metabolic capacity of zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115230. [PMID: 37413963 DOI: 10.1016/j.ecoenv.2023.115230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/08/2023]
Abstract
Chlorpyrifos is a widely used organophosphorus insecticide because of its high efficiency and overall effectiveness, and it is commonly detected in aquatic ecosystems. However, at present, the impact of chlorpyrifos on the aquatic micro-ecological environment is still poorly understood. Here, we established aquatic microcosm systems treated with 0.2 and 2.0 µg/L chlorpyrifos, and employed omics biotechnology, including metagenomics and 16S rRNA gene sequencing, to investigate the effect of chlorpyrifos on the composition and functional potential of the aquatic and zebrafish intestinal microbiomes after 7 d and 14 d chlorpyrifos treatment. After 14 d chlorpyrifos treatment, the aquatic microbial community was adversely affected in terms of its composition, structure, and stability, while its diversity showed only a slight impact. Most functions, especially capacities for environmental information processing and metabolism, were destroyed by chlorpyrifos treatment for 14 d. We observed that chlorpyrifos increased the number of risky antibiotic resistance genes and aggravated the growth of human pathogens. Although no clear effects on the structure of the zebrafish intestinal microbial community were observed, chlorpyrifos treatment did alter the metabolic capacity of the zebrafish. Our study highlights the ecological risk of chlorpyrifos to the aquatic environment and provides a theoretical basis for the rational use of pesticides in agricultural production.
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Affiliation(s)
- Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China; Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310000, PR China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jinfeng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yan Li
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, RA Leiden 2300, the Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, the Netherlands
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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Sonali J MI, Gayathri KV, Kumar PS, Rangasamy G. A study of potent biofertiliser and its degradation ability of monocrotophos and its in silico analysis. CHEMOSPHERE 2023; 312:137304. [PMID: 36410511 DOI: 10.1016/j.chemosphere.2022.137304] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 10/30/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Potassium (K) and phosphorus (P) are the important macronutrients needed for the plant development, but it is widely present in an insoluble form for the plant's uptake. In order to increase the productivity, biofertilisers play crucial role in plant growth enhancement. Our present work focused to isolate potassium-phosphate solubilizing bacteria from the agricultural soil of tomato cultivated soil. Potassium and phosphate solubilization and degradation of monocrotophos was estimated spectrophotometrically. Out of thirteen isolates, two isolates proved to be the best P and K solubilizers. The bacterial isolates (SDKVG02 and SDKVG04) were optimized to obtain maximum P and K solubilization of 57.5 mg L-1 and 15.07 mg L-1 by the isolates. Pot experiments were conducted using SDKVG 02 and 04, immobilized on carrier materials, peat proving the best carrier with the total average green gram and chick pea length of 11.66 ± 0.0666 22.22 ± 0.0577. The MCP degradation percentage was achieved at 80 ppm of MCP with 75.8% and 64.10% by SDKVG 02 and SDKVG 04. Furthermore, production of organic acids such as malic acid, phthalic acid, ascorbic acid, nicotinic acid, and tartaric acid paves solubilization of P and K. The isolates were recognized based on 16S rRNA gene sequencing as Enterobacter hormaechei- SDKVG-02, Enterobacter cloacae SDKVG- 04. The KSB-PSB isolates also express N-fixing activity which is proved through In-silico analysis. It is worth to highlight SDKVG 02 and 04 would be potent biofertiliser exploited in increasing the soil fertility and crop productivity as well in degradation of monocrotophos present in the soil.
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Affiliation(s)
- Mary Isabella Sonali J
- Department of Biotechnology, Stella Maris College (Autonomous), Affiliated to University of Madras, Chennai, India
| | - K Veena Gayathri
- Department of Biotechnology, Stella Maris College (Autonomous), Affiliated to University of Madras, Chennai, India.
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, 140413, India.
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602 105, Tamil Nadu, India
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Davenport EJ, Bose A. Taxonomic Re-Evaluation and Genomic Comparison of Novel Extracellular Electron Uptake-Capable Rhodovulum visakhapatnamense and Rhodovulum sulfidophilum Isolates. Microorganisms 2022; 10:1235. [PMID: 35744753 PMCID: PMC9230146 DOI: 10.3390/microorganisms10061235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/28/2022] Open
Abstract
Rhodovulum spp. are anoxygenic phototrophic purple bacteria with versatile metabolisms, including the ability to obtain electrons from minerals in their environment to drive photosynthesis, a relatively novel process called phototrophic extracellular electron uptake (pEEU). A total of 15 strains of Rhodovulum sulfidophilum were isolated from a marine estuary to observe these metabolisms in marine phototrophs. One representative strain, Rhodovulum sulfidophilum strain AB26, can perform phototrophic iron oxidation (photoferrotrophy) and couples carbon dioxide fixation to pEEU. Here, we reclassify two R. sulfidophilum isolates, strainAB26 and strain AB19, as Rhodovulum visakhapatnamense using taxonomic re-evaluation based on 16S and pufM phylogenetic analyses. The strain AB26 genome consists of 4,380,746 base-pairs, including two plasmids, and encodes 4296 predicted protein-coding genes. Strain AB26 contains 22 histidine kinases, 20 response regulators, and dedicates ~16% of its genome to transport. Transcriptomic data under aerobic, photoheterotrophy, photoautotrophy, and pEEU reveals how gene expression varies between metabolisms in a novel R. visakhapatnamense strain. Genome comparison led by transcriptomic data under pEEU reveals potential pEEU-relevant genes both unique to R. visakhapatnamense strains and shared within the R. sulfidophilum genomes. With these data we identify potential pEEU-important transcripts and how speciation may affect molecular mechanisms of pEEU in Rhodovulum species from the same environment.
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Affiliation(s)
| | - Arpita Bose
- Department of Biology, Washington University in St. Louis, St. Louis, MO 63130, USA;
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Tamminen M, Spaak J, Tlili A, Eggen R, Stamm C, Räsänen K. Wastewater constituents impact biofilm microbial community in receiving streams. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:151080. [PMID: 34678363 DOI: 10.1016/j.scitotenv.2021.151080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/01/2021] [Accepted: 10/15/2021] [Indexed: 05/27/2023]
Abstract
Microbial life in natural biofilms is dominated by prokaryotes and microscopic eukaryotes living in dense association. In stream ecosystems, microbial biofilms influence primary production, elemental cycles, food web interactions as well as water quality. Understanding how biofilm communities respond to anthropogenic impacts, such as wastewater treatment plant (WWTP) effluent, is important given the key role of biofilms in stream ecosystem function. Here, we implemented 16S and 18S rRNA gene sequencing of stream biofilms upstream (US) and downstream (DS) of WWTP effluents in four Swiss streams to test how bacterial and eukaryotic communities respond to wastewater constituents. Stream biofilm composition was strongly affected by geographic location - particularly for bacteria. However, the abundance of certain microbial community members was related to micropollutants in the wastewater - among bacteria, micropollutant-associated members were found e.g. in Alphaproteobacteria, and among eukaryotes e.g. in Bacillariophyta (algal diatoms). This study corroborates several previously characterized responses (e.g. as seen in diatoms), but also reveals previously unknown community responses - such as seen in Alphaproteobacteria. This study advances our understanding of the ecological impact of the current wastewater treatment practices and provides information about potential new marker organisms to assess ecological change in stream biofilms.
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Affiliation(s)
- Manu Tamminen
- Department of Biology, University of Turku, Finland.
| | - Jenny Spaak
- Department of Environmental Microbiology, Eawag, Switzerland
| | - Ahmed Tlili
- Department of Environmental Toxicology, Eawag, Switzerland
| | - Rik Eggen
- Department of Environmental Toxicology, Eawag, Switzerland; Department of Environmental Systems Science, ETH Zürich, Switzerland
| | | | - Katja Räsänen
- Department of Aquatic Ecology, Eawag, Switzerland; Dept. of Biology and Environmental Science, University of Jyväskylä, Finland
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6
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Kim JT, Lee HJ, Lee HS. Organophosphorus pesticides exert estrogen receptor agonistic effect determined using Organization for Economic Cooperation and Development PBTG455, and induce estrogen receptor-dependent adipogenesis of 3T3-L1 adipocytes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 283:117090. [PMID: 33872936 DOI: 10.1016/j.envpol.2021.117090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/25/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
Various chemicals containing pesticides can induce adipogenesis and cause obesity. Organophosphorus pesticides have been used for pest control. Here, we investigated the estrogen receptor (ER)-dependent adipogenesis-inducing effect of representative organophosphorus pesticides (OPs), diazinon, phoxim, terbufos and tolclofos-methyl in 3T3-L1 adipocytes. Four OPs exhibited ER agonistic effect, determined using the OECD Performance Based Test Guideline No. 455; in vitro ER stably transfected transactivation assay using ERα-HeLa-9903 cell line, through binding affinity to ERα. Additionally, they increased lipid droplet accumulation in a dose-dependent manner, which was suppressed by ICI182,780, a well-known ER antagonist. Four OPs treatment induced peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer-binding protein alpha (C/EBPα), and perilipin expression. Furthermore, PPARγ, C/EBPα and perilipin expression was inhibited by co-treatment with ICI182,780. The increased mRNA expression of lipoprotein lipase and fatty acid synthase by four OPs was suppressed by co-treatment with ICI182,780. These results indicated that diazinon, phoxim, terbufos, and tolclofos-methyl might have adipogenesis-inducing effect mediated by interacting with ER.
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Affiliation(s)
- Jin Tae Kim
- Department of Food Science and Biotechnology, Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Hong Jin Lee
- Department of Food Science and Biotechnology, Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Hee-Seok Lee
- Department of Food Science and Biotechnology, Chung-Ang University, Anseong, 17546, Republic of Korea.
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7
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Yuan S, Li C, Yu H, Xie Y, Guo Y, Yao W. Screening of lactic acid bacteria for degrading organophosphorus pesticides and their potential protective effects against pesticide toxicity. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Liu Y, Gao J, Bai Z, Wu S, Li X, Wang N, Du X, Fan H, Zhuang G, Bohu T, Zhuang X. Unraveling Mechanisms and Impact of Microbial Recruitment on Oilseed Rape ( Brassica napus L.) and the Rhizosphere Mediated by Plant Growth-Promoting Rhizobacteria. Microorganisms 2021; 9:microorganisms9010161. [PMID: 33445684 PMCID: PMC7828142 DOI: 10.3390/microorganisms9010161] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 01/13/2023] Open
Abstract
Plant growth-promoting rhizobacteria (PGPR) are noticeably applied to enhance plant nutrient acquisition and improve plant growth and health. However, limited information is available on the compositional dynamics of rhizobacteria communities with PGPR inoculation. In this study, we investigated the effects of three PGPR strains, Stenotrophomonas rhizophila, Rhodobacter sphaeroides, and Bacillus amyloliquefaciens on the ecophysiological properties of Oilseed rape (Brassica napus L.), rhizosphere, and bulk soil; moreover, we assessed rhizobacterial community composition using high-throughput Illumina sequencing of 16S rRNA genes. Inoculation with S. rhizophila, R. sphaeroides, and B. amyloliquefaciens, significantly increased the plant total N (TN) (p < 0.01) content. R. sphaeroides and B. amyloliquefaciens selectively enhanced the growth of Pseudomonadacea and Flavobacteriaceae, whereas S. rhizophila could recruit diazotrophic rhizobacteria, members of Cyanobacteria and Actinobacteria, whose abundance was positively correlated with inoculation, and improved the transformation of organic nitrogen into inorganic nitrogen through the promotion of ammonification. Initial colonization by PGPR in the rhizosphere affected the rhizobacterial community composition throughout the plant life cycle. Network analysis indicated that PGPR had species-dependent effects on niche competition in the rhizosphere. These results provide a better understanding of PGPR-plant-rhizobacteria interactions, which is necessary to develop the application of PGPR.
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Affiliation(s)
- Ying Liu
- School of Life Sciences, University of Science and Technology of China, Hefei 230026, China;
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
| | - Jie Gao
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhihui Bai
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shanghua Wu
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianglong Li
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Na Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiongfeng Du
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haonan Fan
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guoqiang Zhuang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tsing Bohu
- CSIRO Mineral Resources, Kensington, WA 6151, Australia;
| | - Xuliang Zhuang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (J.G.); (Z.B.); (S.W.); (X.L.); (N.W.); (X.D.); (H.F.); (G.Z.)
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-10-6284-9193
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Huang JN, Wen B, Zhu JG, Zhang YS, Gao JZ, Chen ZZ. Exposure to microplastics impairs digestive performance, stimulates immune response and induces microbiota dysbiosis in the gut of juvenile guppy (Poecilia reticulata). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 733:138929. [PMID: 32466972 DOI: 10.1016/j.scitotenv.2020.138929] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/07/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Microplastics (MPs) are widely distributing in aquatic environment. They are easily ingested by aquatic organisms and accumulate in digestive tract especially of intestine. To explore the potential effects of MPs on intestine, here we, using juvenile guppy (Poecilia reticulata) as experimental animal, investigated the response characteristics of digestion, immunity and gut microbiota. After exposure to 100 and 1000 μg/L concentrations of MPs (polystyrene; 32-40 μm diameters) for 28 days, we observed that MPs could exist in guppy gut and induce enlargement of goblet cells. Activities of digestive enzymes (trypsin, chymotrypsin, amylase and lipase) in guppy gut generally reduced. MPs stimulated the expression of immune cytokines (TNF-α, IFN-γ, TLR4 and IL-6). Through high throughput sequencing of 16S rRNA gene, decreases in diversity and evenness and changed composition of microbiota were found in guppy gut. PICRUSt analysis revealed that MPs might have effects on intestinal microbiota functions, such as inhibition of metabolism and repair pathway. Our findings suggested that MPs could retain in the gut of juvenile guppy, impair digestive performance, stimulate immune response and induce microbiota dysbiosis in guppy gut. The results obtained here provide new insights into the potential risks of MPs to aquatic animals.
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Affiliation(s)
- Jun-Nan Huang
- National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Centre of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Bin Wen
- National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Centre of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Jian-Guo Zhu
- National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Centre of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Yan-Shen Zhang
- National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Centre of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Jian-Zhong Gao
- National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Centre of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Zai-Zhong Chen
- National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Centre of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
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10
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Wang B, Zheng X, Zhang H, Xiao F, He Z, Yan Q. Keystone taxa of water microbiome respond to environmental quality and predict water contamination. ENVIRONMENTAL RESEARCH 2020; 187:109666. [PMID: 32445949 DOI: 10.1016/j.envres.2020.109666] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/24/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
The human activity introduces strong environmental stresses, and results in great spatiotemporal heterogeneity for the environment. Although the effects of environmental factors on the microbial diversity and succession have been widely studied, knowledge about how keystone taxa respond to environmental stresses remains poorly understood. We examined bacterial and archaeal communities from 45 wetland ponds covering a wide range of waters in Hangzhou. We found that shifts in bacterial and archaeal communities were strongly correlated with water pollution as indicated by the comprehensive water quality identification (CWQI). The SEGMENTED analysis suggested that there were non-linear responses of microbial communities and keystone taxa to the water pollution gradient. Moreover, these significant tipping points (e.g., CWQI > 4.0) would afford a warning line for urban wetland management. Notably, keystone taxa of bacterial communities could be used to successfully (~88.9% accuracy) predict water contamination levels. This study provides new insights into the potential for keystone bacterial taxa to predict water contamination.
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Affiliation(s)
- Binhao Wang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China
| | - Xiafei Zheng
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China
| | - Hangjun Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Fanshu Xiao
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China.
| | - Zhili He
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China; College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
| | - Qingyun Yan
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China.
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Chen J, Wei J, Ma C, Yang Z, Li Z, Yang X, Wang M, Zhang H, Hu J, Zhang C. Photosynthetic bacteria-based technology is a potential alternative to meet sustainable wastewater treatment requirement? ENVIRONMENT INTERNATIONAL 2020; 137:105417. [PMID: 32120141 DOI: 10.1016/j.envint.2019.105417] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/22/2019] [Accepted: 12/11/2019] [Indexed: 05/23/2023]
Abstract
A paradigm shift is underway in wastewater treatment from pollution removal to resource or energy recovery. However, conventional activated sludge (CAS) as the core technology of wastewater treatment is confronted with severe challenges on high energy consumption, sludge disposal and inevitable greenhouse gas emission, which are posing a serious impact on the current wastewater industry. It is urgent to find new alternative methods to remedy these defects. Photosynthetic bacteria (PSB) have flexible metabolic modes and high tolerance, which enhance the removal of nutrients, heavy metals and organic contaminants efficiency in different wastewater. The unique phototrophic growth of PSB breaks the restriction of nutrient metabolism in the CAS system. Recent studies have shown that PSB-based technologies can not only achieve the recovery of nutrient and energy, but also improve the degradation efficiency of refractory substances. If the application parameters can be determined, there will be great prospects and economic effects. This review summarizes the research breakthroughs and application promotion of PSB-based wastewater treatment technology in recent years. Comparing discussed the superiority and inferiority from the perspective of application range, performance differences and recovery possibility. Pathways involved in the nutrient substance and the corresponding influencing parameters are also described in detail. The mode of PSB biodegradation processes presented a promising alternative for new wastewater treatment scheme. In the future, more mechanical and model studies, deterministic operating parameters, revolutionary process design is need for large-scale industrial promotion of PSB-based wastewater treatment.
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Affiliation(s)
- Jiaqi Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Jingjing Wei
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Chi Ma
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Zhongzhu Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Zihao Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Xu Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Mingsheng Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Huaqing Zhang
- Qinglin Environmental Protection Co. Ltd., Ningbo 315000, China
| | - Jiawei Hu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Chang Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
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12
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Wang H, Cheng Z, Yuan H, Zhu N, Lou Z, Otieno P. Occurrence of banned and commonly used pesticide residues in concentrated leachate: Implications for ecological risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136287. [PMID: 31923666 DOI: 10.1016/j.scitotenv.2019.136287] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 05/27/2023]
Abstract
Amounts of banned and current pesticides have been used in domestic and agricultural pest control, and their residues have accumulated along the waste stream. In this work, pesticides were characterized in concentrated leachates (CLs) from 5 municipal landfill sites, 2 incineration plants and 1 composting plant in six provinces. A total of 31 pesticides were detected which included 8 organochlorine pesticides (OCPs, 303-2974 ng/L), 16 organophosphorus pesticides (OPPs, 1380-13,274 ng/L) and 7 synthetic pyrethroids (SPs, 319-5636 ng/L). Despite the ten years ban of hexachlorocyclohexane, methamidophos and parathion-methyl, they were still in CL at a mean value of 320 ng/L and 88 ng/L, respectively. The average Σ8OCPs, Σ16OPPs and Σ7SPs in CL from landfill sites were approximately 2.8, 1.1 and 4.5 times higher than those from incineration plants, which might have been influenced by pH, moisture and/or HRT. Additionally, it was found that CL from incineration plants and composting plant with lower pesticide contents posed a much higher acute and chronic eco-risk. Methamidophos was the dominant pesticide in CL from incineration plants, which was much higher than any other pesticides detected. The annual emissions of Σ8OCPs, Σ16OPPs and Σ7SPs discharged from landfill-CL were estimated to be 2370, 10,357 and 2994 g, respectively. It was evident from the study that long-term release of CL after waste disposal could cause potential risk of ecological pollution.
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Affiliation(s)
- Hui Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhaowen Cheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haiping Yuan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource, Shanghai 200240, China
| | - Nanwen Zhu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource, Shanghai 200240, China
| | - Ziyang Lou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource, Shanghai 200240, China.
| | - Peter Otieno
- Department of Chemistry, Maseno University, Maseno, Kenya; Institute of Ecological Chemistry, Helmholtz Zentrum Müenchen, German National Research Centre for Environmental Health, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany
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13
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Wu P, Xie L, Wang Y, Cui Y, Chen Z, Zou X, Ge H, Ruan C, Zhang Y, Jin H. RETRACTED: Residual papaya promoting the growth performance, antioxidant, nonspecific immunity of juvenile Tilapia mossambica. FISH & SHELLFISH IMMUNOLOGY 2020; 98:605-610. [PMID: 31669278 DOI: 10.1016/j.fsi.2019.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/06/2019] [Accepted: 08/10/2019] [Indexed: 06/10/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of Editors-in-Chief and first Author. The article duplicates significant parts of a paper that had already appeared in Fish & Shellfish Immunology, Volume 93 (2019) 726-731, https://doi.org/10.1016/j.fsi.2019.06.052. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process. The article was published without the knowledge of the co-authors.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Liying Xie
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Yubo Cui
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Xuejun Zou
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Hui Ge
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Chengjiang Ruan
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Hua Jin
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
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14
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Wu P, Liu Y, Li X, Gu Y, Liu Y, Hu Y, Wang Y, Wu Y, Li N, Zhang Y, Chen Z, Jin H. The regulation of the disease resistance, mTOR and NF-kB signaling pathway of Aristichthys nobilis using Rhodopseudomonas wastewater treatment. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 104:103517. [PMID: 31647941 DOI: 10.1016/j.dci.2019.103517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 09/04/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
The employment of traditional feed and medicament in freshwater aquaculture causes the frequent occurrence of environmental pollution and disease. Effluent collected after Rhodopseudomonas-mediated wastewater treatment could be re-utilized as microbial feeds, and aquaculture water to culture Aristichthys nobilis. Therefore, a novel integrated system of wastewater treatment using effluent containing Rhodopseudomonas that improves yield, increases disease resistance, and enhances the quality of aquaculture water for Aristichthys nobilis culture was proposed and investigated. Aristichthys nobilis can grow well in effluent containing Rhodopseudomonas (ER). The survival rate, yield, and whole body composition of the ER group were all increased compared to the control group (CK). The biochemical (B vitamin) and other substances in the effluent of Rhodopseudomonas enhanced the activity of AKP, ACP, phagocytic, SOD, and CAT by upregulating the expression of AKP, ACP, SOD, and CAT genes. Moreover, Rhodopseudomonas and biochemical substances improved mTOR and NF-kB signaling pathway. Furthermore, Rhodopseudomonas inhibited Aeromonas hydrophila that increases resistance against fish disease. Meanwhile, Rhodopseudomonas in the effluent also improved the aquaculture water quality. This technology would save the aquaculture water, reduce water pollution and wastewater discharge, and increase the output and disease resistance of Aristichthys nobilis, simultaneously.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Yaxin Liu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Xiaoting Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yonghu Gu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yuxin Liu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yuqiao Hu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Hua Jin
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
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15
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Wu P, Zhang Q, Wang Y, Zhang Y, Chen Z, Cao B, Wu Y, Zhu F, Li N. RETRACTED: Clothianidin wastewater treatment and the accumulation of high-value biochemical by Rhodopseudomonas spheroides. BIORESOURCE TECHNOLOGY 2019; 294:122073. [PMID: 31521982 DOI: 10.1016/j.biortech.2019.122073] [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: 07/04/2019] [Revised: 08/21/2019] [Accepted: 08/24/2019] [Indexed: 06/10/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Authors and the Editor-in-Chief. The paper is retracted because of a high level of duplication of "Rhodopseudomonas palustris wastewater treatment: cyhalofop-butyl removal, biochemicals production and mathematical model establishment. Bioresource. Tech. 2019, 282: 390-397 As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process. The first author, Pan Wu, takes full responsibility for these actions, a stance supported by Dalian Minzu University and Northeast Agricultural University, Harbin, where the research took place.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin150030, China
| | - Qian Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China
| | - Yanling Wang
- Department of Anesthesiology, the Third Affiliated Hospital of SunYat-Sen University, Guangzhou510630, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin150030, China.
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin150030, China
| | - Bo Cao
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin150030, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin150030, China
| | - Feifei Zhu
- Forest and Wastewater Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110164, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin150030, China
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16
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Wu P, Gu Y, Zhao R, Liu Y, Wang Y, Lv G, Li Z, Bao Y. RETRACTED: Residual pomegranate affecting the nonspecific immunity of juvenile Darkbarbel catfish. FISH & SHELLFISH IMMUNOLOGY 2019; 95:190-194. [PMID: 31626920 DOI: 10.1016/j.fsi.2019.10.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/30/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of Editors-in-Chief and first Author. The article duplicates significant parts of a paper that had already appeared in Fish & Shellfish Immunology, Volume 93 (2019) 726-731, https://doi.org/10.1016/j.fsi.2019.06.052. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process. The first author informed the journal that the article was published without the knowledge of the co-authors.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Yonghe Gu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Rou Zhao
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yaxin Liu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Guozhong Lv
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Zhenghai Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yajing Bao
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
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17
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Wu P, Xie L, Mo W, Wang B, Ge H, Sun X, Tian Y, Zhao R, Zhu F, Zhang Y, Wang Y. The biodegradation of carbaryl in soil with Rhodopseudomonas capsulata in wastewater treatment effluent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 249:109226. [PMID: 31442909 DOI: 10.1016/j.jenvman.2019.06.127] [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: 08/17/2018] [Revised: 06/20/2019] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
In this study, the effects of Rhodopseudomonas capsulata present in wastewater effluent on the biodegradation of carbaryl in soil and improvement of soil fertility were investigated. Compared to control treatment, carbaryl was removed efficiently and soil fertility was remediated with the addition of effluent containing R. capsulata. Molecular analysis revealed that carbaryl induced carbaryl hydrolase gene expression to synthesize carbaryl hydrolase through activating MAPKKKs, MAPKKs, MAPKs genes in MAPK signal transduction pathway. The induction and secretion of carbaryl hydrolase occur after one day in R. capsulata, which can be attributed to its characteristics as an ancient bacteria, which require acclimatization to carbaryl before gene induction. However, lack of organics in soil and control treatment could not maintain R. capsulata growth for over one day. The residual organics in the effluent provided sufficient carbon source and energy for R. capsulata under four effluent treatments. This new method resulted in the remediation of carbaryl pollution and improvement of soil fertility and soybean processing wastewater treatment simultaneously, as well as the reutilization of wastewater and R. capsulata as sludge. Meanwhile, the high-order non-linear mathematical model about carbaryl removal rate was established.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Liying Xie
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Wentao Mo
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Bing Wang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Hui Ge
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Xiaodong Sun
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Ying Tian
- Key Laboratory of Mariculture & Stock Enhancement in North China Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, Liaoning, China
| | - Rou Zhao
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Feifei Zhu
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China.
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18
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Wu P, Hu Y, Wang Y, Wu Y, Li N, Dong Y, Zhang Y. RETRACTED: Regulation of the disease resistance and mTOR and NF-kB signaling pathway of Tilapia mossambica by Rhodopseudomonas capsulatus wastewater treatment. FISH & SHELLFISH IMMUNOLOGY 2019; 94:697-704. [PMID: 31561027 DOI: 10.1016/j.fsi.2019.09.001] [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: 01/31/2019] [Revised: 08/29/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of Editors-in-Chief and first Author. The article duplicates significant parts of a paper that had already appeared in Fish & Shellfish Immunology, Volume 93 (2019) 726-731, https://doi.org/10.1016/j.fsi.2019.06.052. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process. The first author informed the journal that the article was published without the knowledge of the co-authors.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Yuqiao Hu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yuying Dong
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
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19
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Wu P, Mo W, Wang Y, Wu Y, Zhang Y, Chen Z, Li N. RETRACTED: Effluent containing Rubrivivax gelatinosus promoting the yield, digestion system, disease resistance, mTOR and NF-kB signaling pathway, intestinal microbiota and aquaculture water quality of crucian carp. FISH & SHELLFISH IMMUNOLOGY 2019; 94:166-174. [PMID: 31446081 DOI: 10.1016/j.fsi.2019.08.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 08/05/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of Editors-in-Chief and first Author. The article duplicates significant parts of a paper that had already appeared in Fish & Shellfish Immunology, Volume 93 (2019) 726-731, https://doi.org/10.1016/j.fsi.2019.06.052. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process. The first author informed the journal that the article was published without the knowledge of the co-authors.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Wentao Mo
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The third affiliated hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
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20
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Wu P, Chen Z, Zhang Y, Wang Y, Zhu F, Cao B, Jin L, Hou Y, Wu Y, Li N. Carbaryl waste-water treatment by Rhodopseudomonas sphaeroides. CHEMOSPHERE 2019; 233:597-602. [PMID: 31195264 DOI: 10.1016/j.chemosphere.2019.05.237] [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: 05/09/2018] [Revised: 04/09/2019] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
Carbaryl wastewater treatment and the resource recycling of biomass as sludge by Rhodopseudomonas sphaeroides (R. sphaeroides) with the assistance of starch processing wastewater (SPW) was investigated in this research. It was observed that carbaryl was not degraded under the 100, 500 mg/L COD groups. The addition of SPW assisted R. sphaeroides to degrade carbaryl efficiently. Carbaryl removal reached 100% after 5 days under the optimal group (3500 mg/L). Interestingly, carbaryl in the mixed wastewater began to be degraded after day 1. Further research indicated that cehA gene was expressed after day 1. Subsequently, carbaryl hydrolase was synthesized under gene regulation. Analysis revealed that cehA and carbaryl hydrolase were adaptive gene expressions and enzymes. Carbaryl as stimulus signal started cehA gene expression through signal transduction pathway. This process took one day for R. sphaeroides. However, organics in 100, 500 mg/L COD groups were deficient, which could not maintain R. sphaeroides growth for over one day. Organics in SPW provided sufficient carbon sources for R. sphaeroides under other groups. The method could complete the mixed (SPW and carbaryl) wastewater treatment, carbaryl removal, the resource recycling of R. sphaeroides biomass as sludge simultaneously.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Feifei Zhu
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Bo Cao
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Liming Jin
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanxi Hou
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
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Wu P, Yang W, Dong Y, Wang Y, Zhang Y, Zou X, Ge H, Hu D, Cui Y, Chen Z. Feasibility of cultivation of Spinibarbus sinensis with coconut oil and its effect on disease resistance (nonspecific immunity, antioxidation and mTOR and NF-kB signaling pathways). FISH & SHELLFISH IMMUNOLOGY 2019; 93:726-731. [PMID: 31265912 DOI: 10.1016/j.fsi.2019.06.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/17/2019] [Accepted: 06/28/2019] [Indexed: 06/09/2023]
Abstract
Application of traditional bait in aquaculture caused environment pollution and disease frequent occurrence. Residual coconut could be re-utilized to culture Spinibarbus sinensis as dietary supplement. Therefore, a novel integrated system of the improvement of yield, antioxidant and nonspecific immunity of Spinibarbus sinensis by dietary residual coconut was proposed and investigated. Spinibarbus sinensis could grow well in all supplement residual coconut groups. Survival rate, yield, whole fish body composition under 15-45% groups were increased compared with control group (CK). Bioactive substances (polyphenols and vitamin) in residual coconut enhanced AKP, ACP, phagocytic, SOD, CAT activities through up-regulating AKP, ACP, SOD, CAT genes expression levels. Theoretical analysis showed bioactive substances regulated these genes expressions and enzyme activities as stimulus signal, component, active center. Moreover, residual coconut improved mTOR and NF-kB signaling pathway. Furthermore, residual coconut inhibited Aeromonas hydrophila that increased resistance to diseases. This technology completed the solid waste recovery and the Spinibarbus sinensis culture simultaneously.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Weiguang Yang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
| | - Yuying Dong
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Xuejun Zou
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Hui Ge
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Dongxue Hu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yubo Cui
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
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Wu P, Mo W, Chen Z, Wang Y, Cui Y, Zhang Y, Song Y, Jin L, Hou Y, Zhu F, Cao B, Li N. The removal of cyhalofop-butyl in soil by surplus Rhodopseudanonas palustris in wastewater purification. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 245:168-172. [PMID: 31152960 DOI: 10.1016/j.jenvman.2019.03.027] [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: 03/21/2018] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
The biorestoration of cyhalofop-butyl and fertility in soil using Rhodopseudanonas palustris (R. palustris) in the treated wastewater were investigated in this research. Cyhalofop-butyl was not degraded under control group. The treated wastewater containing R. palustris degraded cyhalofop-butyl and remediated fertility. Interestingly, the cyhalofop-butyl-hydrolyzing carboxylesterase gene was expressed after inoculation 24 h. Subsequently, the cyhalofop-butyl-hydrolyzing carboxylesterase were synthesized to degrade cyhalofop-butyl. The cyhalofop-butyl started to be degraded after inoculation 24 h. The cyhalofop-butyl as stimulus signal induced cyhalofop-butyl-hydrolyzing carboxylesterase gene expression through signal transduction pathway. This process took 24 h for R. palustris as they were ancient bacteria. The residual organics in the wastewater provided sufficient carbon sources and energy for R. palustris under three dosage groups. The new method completed the remediation of cyhalofop-butyl pollution, the improvement of soil fertility and soybean processing wastewater treatment simultaneously, and realized the resource reutilization of wastewater and R. palustris as sludge.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - WenTao Mo
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Yubo Cui
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yantao Song
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Liming Jin
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanxi Hou
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Feifei Zhu
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Bo Cao
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
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Wu P, Han Z, Mo W, Wu X, Chen Z, Zhang Y, Wang Y, Cui Y, Dong Y, Sun H, Zou X. Soybean processing wastewater supported the removal of propyzamide and biochemical accumulation from wastewater by Rhodopseudomonas capsulata. Bioprocess Biosyst Eng 2019; 42:1375-1384. [PMID: 31172262 DOI: 10.1007/s00449-019-02137-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 12/15/2018] [Indexed: 11/25/2022]
Abstract
Simultaneous (SPW and propyzamide) wastewater treatment and the production of biochemicals by Rhodopseudomonas capsulata (R. capsulata) were investigated with supplement of soybean processing wastewater (SPW). Compared to control group, propyzamide was removed and biochemicals production were enhanced with the supplement of SPW. Propyzamide induced camH gene expression through activating MAPKKKs gene in MAPK signal transduction pathway. The induction of camH gene and CamH occurs after 1 day for R. capsulata. However, lack of organics in original wastewater did not maintain R. capsulata growth for over 1 day. The supplement of SPW provided sufficient carbon source for R. capsulata under three addition dosages. This new method resulted in the mixed (SPW and propyzamide) wastewater treatment and improvement of biochemicals simultaneously, as well as the realization of reutilization of wastewater and R. capsulata as sludge. Meanwhile, high-order nonlinear mathematical model of the relationship between propyzamide removal rate, Xt and Xt/r, was established.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ziqiao Han
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Wentao Mo
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Xiaozhen Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Yubo Cui
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yuying Dong
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Hongjie Sun
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Xuejun Zou
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
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Wu P, Chen Z, Zhang Y, Wang Y, Zhu F, Cao B, Wu Y, Li N. Rhodopseudomonas palustris wastewater treatment: Cyhalofop-butyl removal, biochemicals production and mathematical model establishment. BIORESOURCE TECHNOLOGY 2019; 282:390-397. [PMID: 30884459 DOI: 10.1016/j.biortech.2018.11.087] [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: 08/17/2018] [Revised: 11/22/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
Simultaneous (SPW and cyhalofop-butyl) wastewater treatment and the production of biochemicals by Rhodopseudomonas palustris (R. palustris) was investigated with supplementation of soybean processing wastewater (SPW). Compared to control group, cyhalofop-butyl was removed and single cell protein, carotenoid, bacteriochlorophyll productions were enhanced with the supplementation of SPW. Cyhalofop-butyl removal reached 100% after 5 days under 4000 mg/L COD group. Cyhalofop-butyl induced chbH gene expression to synthesize cyhalofop-butyl-hydrolyzing carboxylesterase through activating MAPKKKs, MAPKKs, MAPKs genes in MAPK signal transduction pathway. The induction process took one day for R. palustris. However, lack of organics in original wastewater did not maintain R. palustris growth for over one day. The supplementation of SPW provided sufficient carbon source. This new method resulted in the mixed wastewater treatment and improvement of biochemicals simultaneously, as well as the realization of reutilization of R. palustris. High-order non-linear mathematical model of the relationship between Rchb, Xc, and Xt was established.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China.
| | - Yanling Wang
- Department of Anesthesiology, the Third Affiliated Hospital of SunYat-Sen University, Guangzhou 510630, China
| | - Feifei Zhu
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
| | - Bo Cao
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
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