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Yu B, Li X, He M, Li Y, Ding J, Zhong Y, Zhang H. Selective production of singlet oxygen for harmful cyanobacteria inactivation and cyanotoxins degradation: Efficiency and mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129940. [PMID: 36108496 DOI: 10.1016/j.jhazmat.2022.129940] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/26/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Knowledge about the impact of singlet oxygen (1O2) on the characteristics and inactivation of harmful cyanobacterial organic matter is limited. In this study, the feasibility of using an improved single-iron doped graphite-like phase carbon nitride catalyst (FeCN) to activate peroxymonosulfate (PMS) catalytic production of 1O2 to inactivate four harmful cyanobacteria was investigated. The inactivation efficiencies at 30 min were 92.77%, 66.84%, 91.06%, and 93.45% for Microcystis aeruginosa (M. aeruginosa), Nodularia harveyana, Oscillatoria sp., and Nostoc sp., respectively. This was associated with adjusting experimental parameters, such as the FeCN and PMS doses and initial pH, to obtain the maximum 1O2 yield. The quenching experiment results and electron paramagnetic resonance spectra showed that 1O2 generated via the non-radical pathway might play a dominant role in inactivating harmful cyanobacteria and degrading harmful algal toxins (Microcystin-LR and Nodularin). In addition, the FeCN-PMS system not only effectively destroyed the integrity of harmful cyanobacterial cells but also effectively degraded cyanobacterial toxins, thereby preventing severe secondary contamination by cell rupture. A possible removal mechanism was proposed. This reveals the potential of 1O2 to simultaneously inactivate harmful cyanobacteria and degrade harmful cyanobacterial toxins.
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Affiliation(s)
- Bingzhi Yu
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China
| | - Xizi Li
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China
| | - Mengfan He
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China
| | - Yan Li
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China
| | - Jiafeng Ding
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China; School of Engineering, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China.
| | - Yuchi Zhong
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China; School of Engineering, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China
| | - Hangjun Zhang
- School of Life and Environmental Sciences, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China; School of Engineering, Hangzhou Normal University, 311121 Hangzhou, Zhejiang, China.
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Li H, Ding S, Song W, Zhang Y, Ding J, Lu J. Iron reduction characteristics and kinetic analysis of Comamonas testosteroni Y1: a potential iron-reduction bacteria. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2021.108256] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Wang X, Xia J, Ding S, Zhang S, Li M, Shang Z, Lu J, Ding J. Removing organic matters from reverse osmosis concentrate using advanced oxidation-biological activated carbon process combined with Fe 3+/humus-reducing bacteria. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 203:110945. [PMID: 32684517 DOI: 10.1016/j.ecoenv.2020.110945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
The high-concentration wastewater produced in the industrial reverse osmosis (RO) process contains a large amount of refractory organic matters, which will have serious impacts on the natural environment and human health. Among them, contaminants can be transformed by humus-reducing bacteria based on humus. In this study, O3- assisted UV-Fenton method was applied as pretreatment. Biological activated carbon (BAC) technology in which humus-reducing bacteria were the dominant bacteria, enhanced by electron donor and Fe3+, was used to dispose of RO concentrate (ROC). The results showed that water treatment process combining oxidation with biological filtration had a positive effect on the removal of stubborn contaminants in ROC. The system was strengthened by adding electron donor and Fe3+, and the chemical oxygen demand (COD) removal efficiency was up to 80.1%. However, when the removal efficiency of UV254 absorbing pollutants reached optimal value (87.3%), that means only Fe3+ was added.
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Affiliation(s)
- Xiaoyan Wang
- Department of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, China
| | - Jiaohui Xia
- Department of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, China; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Shaoxuan Ding
- Faculty of Science, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Shuo Zhang
- College of Engineering, Northeastern University, Boston, 02115, UK
| | - Menghong Li
- Department of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, China
| | - Zhenxiao Shang
- Department of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, China
| | - Jie Lu
- Department of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, China.
| | - Jincheng Ding
- College of Chemical Engineering, Shandong University of Technology, Zibo, 255000, China
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Tang W, Zhang Y, Bai J, Li J, Wang J, Li L, Zhou T, Chen S, Rahim M, Zhou B. Efficient denitrification and removal of natural organic matter, emerging pollutants simultaneously for RO concentrate based on photoelectrocatalytic radical reaction. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116032] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Li N, Wang X, Zhang H, Zhang Z, Ding J, Lu J. Comparing the performance of various nanofiltration membranes in advanced oxidation-nanofiltration treatment of reverse osmosis concentrates. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:17472-17481. [PMID: 31020525 DOI: 10.1007/s11356-019-05120-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
Reverse osmosis (RO) technique plays an important role in the treatment of secondary biochemical effluent. However, the reverse osmosis concentrate (ROC) with high salinity and organic pollutants generated from this process remains a challenge to be tackled. The O3-assisted UV-Fenton advanced oxidation process (AOP) as a pretreatment for the nanofiltration (NF) was used to treat the ROC of industrial wastewater. The optimal removal rates of COD and UV254 were 80.4 and 77.4%, respectively. In the NF process, four types of commercial NF membranes (NF90 (Dow, USA), DK (GE, USA), NT101, and NT103 (NADIR, Germany)) were used to treat the AOP effluent. The effects of operating pressure and feed temperature on ion rejection were investigated. The results show that NF90 and NT103 membranes had better rejections to monovalent ions, while DK and NT101 membranes could effectively separate monovalent and divalent ions and their ion rejections decreased with the increase of feed temperature. With the NF90 membrane, the highest TDS removal rate of 89.65% was obtained at the operating pressure of 1.2 MPa.
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Affiliation(s)
- Na Li
- Department of Resources and Environmental Engineering, Shandong University of Technology, 266 Xincun West Road, Zibo, 255000, Shandong, China
| | - Xiaoyan Wang
- Department of Resources and Environmental Engineering, Shandong University of Technology, 266 Xincun West Road, Zibo, 255000, Shandong, China
| | - Hui Zhang
- Department of Resources and Environmental Engineering, Shandong University of Technology, 266 Xincun West Road, Zibo, 255000, Shandong, China
| | - Zijian Zhang
- Department of Resources and Environmental Engineering, Shandong University of Technology, 266 Xincun West Road, Zibo, 255000, Shandong, China
| | - Jincheng Ding
- College of Chemistry and Chemical Engineering, Shandong University of Technology, 266 Xincun West Road, Zibo, 255000, Shandong, China.
| | - Jie Lu
- Department of Resources and Environmental Engineering, Shandong University of Technology, 266 Xincun West Road, Zibo, 255000, Shandong, China.
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