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Cheng F, Wang J. Regulation of reactive species during ionizing radiation by peroxydisulfate for enhanced degradation of typical pollutants in coking wastewater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 359:124581. [PMID: 39033843 DOI: 10.1016/j.envpol.2024.124581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/19/2024] [Accepted: 07/18/2024] [Indexed: 07/23/2024]
Abstract
This study focused on exploring the effect of peroxydisulfate (PDS) on the regulation of reactive species during water radiolysis process and its potential application for degrading organic pollutants. The results indicated that PDS was successfully activated by ionizing radiation for efficient removal of three typical phenolic compounds over a wide pH range (3.0∼12.0) at absorbed dose of 5 kGy. Chemical probe methods provided the evidence that the addition of PDS could introduce the sulfate radicals (SO4•-) and enhance the production of hydroxyl radicals (•OH). According to the quenching tests, •OH and SO4•- were the dominant reactive species responsible for the degradation of 4-NP, while hydrated electron (eaq-) played a minor role. The regulatory effect of PDS on active species in the ionizing radiation process could divided by (i) PDS could be directly activated by ionizing radiation to produce •OH and SO4•- via energy transfer pathway; (ii) PDS could boost the conversion of eaq- to SO4•- via electron transfer pathway. Furthermore, we assessed the applicability of the IR and IR/PDS systems in treating mixed solutions containing various pollutants and actual coking wastewater.
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Affiliation(s)
- Feng Cheng
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, China; CAEA Center of Excellence on Nuclear Technology Applications for Electron Beam on Environmental Application, Beijing, Tsinghua University, 100084, China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, China; CAEA Center of Excellence on Nuclear Technology Applications for Electron Beam on Environmental Application, Beijing, Tsinghua University, 100084, China; Beijing Key Laboratory for Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, China.
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2
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Zhang C, Li S, Sun H, Fu S, Jingjing J, Cui H, Zhou D. Feasibility of intimately coupled CaO-catalytic-ozonation and bio-contact oxidation reactor for heavy metal and color removal and deep mineralization of refractory organics in actual coking wastewater. BIORESOURCE TECHNOLOGY 2024; 408:131154. [PMID: 39053598 DOI: 10.1016/j.biortech.2024.131154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 07/19/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
Considering the challenges for both single and traditional two-stage treatments, advanced oxidation and biodegradation, in the treatment of actual coking wastewater, an intimately coupled catalytic ozonation and biodegradation (ICOB) reactor was developed. In this study, ICOB treatment significantly enhanced the removal of Cu2+, Fe3+, and color by 39 %, 45 %, and 52 %, respectively, outperforming biodegradation. Catalytic ozonation effectively breaking down unsaturated organic substances and high-molecular-weight dissolved organic matter into smaller, more biodegradable molecules. Compared with biodegradation, the ICOB system significantly increased the abundances of Pseudomonas, Sphingopyxis, and Brevundimonas by ∼ 96 %, ∼67 %, and ∼ 85 %, respectively. These microorganisms, possessing genes for degrading phenol, aromatic compounds, polycyclic aromatics, and sulfur metabolism, further enhanced the mineralization of intermediates. Consequently, the ICOB system outperformed biodegradation and catalytic ozonation treatments, exhibiting chemical oxygen demand removal rate of ∼ 58 % and toxicity reduction of ∼ 47 %. Overall, the ICOB treatment showcases promise for practical engineering applications in coking wastewater treatment.
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Affiliation(s)
- Chongjun Zhang
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, Jilin, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, Jilin, China.
| | - Shaoran Li
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, Jilin, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, Jilin, China
| | - Haoran Sun
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, Jilin, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, Jilin, China
| | - Shaozhu Fu
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, Jilin, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, Jilin, China
| | - Jiang Jingjing
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, Jilin, China
| | - Han Cui
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, Jilin, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, Jilin, China.
| | - Dandan Zhou
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, Jilin, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, Jilin, China
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Hu R, Li JY, Yu Q, Yang SQ, Ci X, Qu B, Yang L, Liu ZQ, Liu H, Yang J, Sun S, Cui YH. Catalytic ozonation of reverse osmosis concentrate from coking wastewater reuse by surface oxidation over Mn-Ce/γ-Al 2O 3: Effluent organic matter transformation and its catalytic mechanism. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134363. [PMID: 38663291 DOI: 10.1016/j.jhazmat.2024.134363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/30/2024] [Accepted: 04/18/2024] [Indexed: 05/12/2024]
Abstract
Degradation of organics in high-salinity wastewater is beneficial to meeting the requirement of zero liquid discharge for coking wastewater treatment. Creating efficient and stable performance catalysts for high-salinity wastewater treatment is vital in catalytic ozonation process. Compared with ozonation alone, Mn and Ce co-doped γ-Al2O3 could remarkably enhance activities of catalytic ozonation for chemical oxygen demand (COD) removal (38.9%) of brine derived from a two-stage reverse osmosis treatment. Experimental and theoretical calculation results indicate that introducing Mn could increase the active points of catalyst surface, and introducing Ce could optimize d-band electronic structures and promote the electron transport capacity, enhancing HO• bound to the catalyst surface ([HO•]ads) generation. [HO•]ads plays key roles for degrading the intermediates and transfer them into low molecular weight organics, and further decrease COD, molecular weights and number of organics in reverse osmosis concentrate. Under the same reaction conditions, the presence of Mn/γ-Al2O3 catalyst can reduce ΔO3/ΔCOD by at least 37.6% compared to ozonation alone. Furthermore, Mn-Ce/γ-Al2O3 catalytic ozonation can reduce the ΔO3/ΔCOD from 2.6 of Mn/γ-Al2O3 catalytic ozonation to 0.9 in the case of achieving similar COD removal. Catalytic ozonation has the potential to treat reverse osmosis concentrate derived from bio-treated coking wastewater reclamation.
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Affiliation(s)
- Rui Hu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Jia-Ying Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Qiyi Yu
- China United Engineering Corporation Limited, Hangzhou 310052, PR China
| | - Sui-Qin Yang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China
| | - Xinbo Ci
- Hebei Think-do Water Treatment Technology Co., Ltd., Shijiazhuang 050035, PR China
| | - Bing Qu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Liwei Yang
- Shandong Zhangqiu Blower Co., Ltd., Jinan 250200, PR China
| | - Zheng-Qian Liu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Hongquan Liu
- Hebei Think-do Water Treatment Technology Co., Ltd., Shijiazhuang 050035, PR China
| | - Jingjing Yang
- Key Laboratory of Suzhou Sponge City Technology, Suzhou University of Science and Technology, Suzhou 215009, PR China; School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, PR China
| | - Shiquan Sun
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China
| | - Yu-Hong Cui
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
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Sun W, Cheng Y, Xiao Z, Zhou J, Shah KJ, Sun Y. Catalytic ozonation of reverse osmosis membrane concentrates by catalytic ozonation: Properties and mechanisms. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e11058. [PMID: 38831682 DOI: 10.1002/wer.11058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 05/06/2024] [Accepted: 05/13/2024] [Indexed: 06/05/2024]
Abstract
Ni-Mn@KL ozone catalyst was prepared for the efficient treatment of reverse osmosis membrane concentrates. The working conditions and reaction mechanism of the ozone-catalyzed oxidation by Ni-Mn@KL were systematically studied. Then, a comprehensive CRITIC weighting-coupling coordination evaluation model was established. Ni-Mn@KL was characterized by scanning electron microscopy, BET, X-ray diffraction, X-ray photoelectron spectroscopy, energy-dispersive spectrometry, and X-ray fluorescence spectrometry and found to have large specific surface area and homogeneous surface dispersion of striped particles. Under the optimum working conditions with an initial pH of 7.9 (raw water), a reaction height-to-diameter ratio of 10:1, an ozone-aeration intensity of 0.3 L/min, and a catalyst filling rate of 10%, the maximum COD removal rate was 60.5%. Free-radical quenching experiments showed that OH oxidation played a dominant role in the Ni-Mn@KL-catalyzed ozone-oxidation system, and the reaction system conformed to the second-order reaction kinetics law. Ni-Mn@KL catalysts were further confirmed to have good catalytic performance and mechanical performance after repeated utilization. PRACTITIONER POINTS: Ni-Mn@KL catalyst can achieve effective treatment of RO film concentrated liquid. High COD removal rate of RO membrane concentrated liquid was obtained at low cost. Ni-Mn@KL catalyst promotes ozone decomposition to produce ·OH and O2 -· oxidized organic matter. The Ni-Mn@KL catalyst can maintain good stability after repeated use. A CRITIC weight-coupling coordination model was established to evaluate the catalytic ozonation.
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Affiliation(s)
- Wenquan Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, China
| | - Yueqian Cheng
- College of Urban Construction, Nanjing Tech University, Nanjing, China
| | - Zhiqiang Xiao
- College of Urban Construction, Nanjing Tech University, Nanjing, China
| | - Jun Zhou
- College of Urban Construction, Nanjing Tech University, Nanjing, China
| | - Kinjal J Shah
- College of Urban Construction, Nanjing Tech University, Nanjing, China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, China
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Yin X, Zhang J, Chen S, Li W, Zhu H, Wei K, Zhang Y, Chen H, Han W. Electric field-enhanced heterogeneous catalytic ozonation (EHCO) process for sulfadiazine removal: The role of cathodic reduction. CHEMOSPHERE 2024; 351:141226. [PMID: 38228193 DOI: 10.1016/j.chemosphere.2024.141226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/04/2024] [Accepted: 01/13/2024] [Indexed: 01/18/2024]
Abstract
In this work, an electric field-enhanced heterogeneous catalytic ozonation (EHCO) was systematically investigated using a prepared FeOx/PAC catalyst. The EHCO process exhibited high sulfadiazine (SDZ) and TOC removal efficiency compared with electrocatalysis (EC) and heterogeneous catalytic ozonation (HCO) process. Almost 100% of SDZ was removed within 2 min, and the TOC removal reached approximately 85% within 60 min. Quenching experiments and EPR analysis suggested that the prominent SDZ and TOC removal performance is supported by the enhanced ·OH generation ability. Further study proved that H2O2 formed by O2 electrochemical reduction, peroxone reaction and electrochemical reduction of ozone contributed to improving ·OH generation. Furthermore, the EHCO system showed satisfactory stability and recyclability compared to conventional HCO systems, and the SDZ and TOC removal rates were maintained at ≥95% and ≥70% in 16 consecutive recycles, respectively. Meanwhile, XPS analysis and Boehm's titration for the FeOx/PAC catalyst used in HCO and EHCO process confirmed that the external electron supply could restrain the oxidation of surface functional groups of PAC and maintain a balance of the Fe(II)/Fe(III) ratio, which proved the critical role of cathode reduction in catalyst in situ regeneration during long consecutive recycles. In addition, the EHCO system could achieve more than 80% SDZ removal within 2 min in different water matrices. These results confirmed that the EHCO process has a wide application perspective for refractory organics removal in actual wastewater.
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Affiliation(s)
- Xu Yin
- 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
| | - Jie Zhang
- 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
| | - Siru Chen
- 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
| | - Wei Li
- 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
| | - Hongwei Zhu
- 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
| | - Kajia Wei
- 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.
| | - Yonghao Zhang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Haoming Chen
- 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
| | - Weiqing Han
- 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.
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6
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Zhang J, Wu Z, Dong B, Ge S, He S. Effective degradation of quinoline by catalytic ozonation with MnCe xO y catalysts: performance and mechanism. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2024; 89:823-837. [PMID: 38358505 PMCID: wst_2024_027 DOI: 10.2166/wst.2024.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Quinoline inevitably remains in the effluent of coking wastewater treatment plants due to its bio-refractory nature, which might cause unfavorable effects on human and ecological environments. In this study, MnCexOy was consciously synthesized by α-MnO2 doped with Ce3+ (Ce:Mn = 1:10) and employed as the ozonation catalyst for quinoline degradation. After that, the removal efficiency and mechanism of quinoline were systematically analyzed by characterizing the physicochemical properties of MnCexOy, investigating free radicals and monitoring the solution pH. Results indicated that the removal rate of quinoline was greatly improved by the prepared MnCexOy catalyst. Specifically, the removal efficiencies of quinoline could be 93.73, 62.57 and 43.76%, corresponding to MnCexOy, α-MnO2 and single ozonation systems, respectively. The radical scavenging tests demonstrated that •OH and •O2- were the dominant reactive oxygen species in the MnCexOy ozonation system. Meanwhile, the contribution levels of •OH and •O2- to quinoline degradation were about 42 and 35%, respectively. The abundant surface hydroxyl groups and oxygen vacancies of the MnCexOy catalyst were two important factors for decomposing molecular O3 into more •OH and •O2-. This study could provide scientific support for the application of the MnCexOy/O3 system in degrading quinoline in bio-treated coking wastewater.
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Affiliation(s)
- Jie Zhang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China E-mail:
| | - Zhaochang Wu
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Ben Dong
- Jiangsu Fangzheng Environmental Protection Consulting (Group) Co., Ltd, Xuzhou, 221132, Jiangsu, China
| | - Sijie Ge
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Shilong He
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
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Li Y, Fu M, Zhang X, He C, Chen D, Xiong Y, Guo L, Tian S. Enhanced catalytic ozonation performance by CuO x nanoclusters/TiO 2 nanotube and an insight into the catalytic mechanism. J Colloid Interface Sci 2023; 651:589-601. [PMID: 37562301 DOI: 10.1016/j.jcis.2023.07.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/13/2023] [Accepted: 07/29/2023] [Indexed: 08/12/2023]
Abstract
Highly reactive nanoclusters of metal oxides are extremely difficult to be synthesized due to their thermodynamic instability. For the first time, CuOx nanoclusters supported on anatase TiO2 nanotubes (NT) with many defects as anchoring sites were successfully prepared. Although the copper loading reached as high as 2.5 %, the size of CuOx nanoclusters in the sample of 2.5 %CuOx/NT were mainly around 1.0 nm. The aggregation of copper species during the calcination process was undoubtedly hampered by the anchoring effects of the abundant defects in NT support. Due to the highly exposed undercoordinated atoms of CuOx nanoclusters, the mixed valences of copper, and the strong interface interaction between CuOx nanoclusters and NT support, 2.5 %CuOx/NT-catalyzed ozonation showed the highest pseudo-first-order reaction rate constant of 8.5 × 10-2 min-1, 2.2 and 4.0 times that of NT-catalyzed ozonation and ozonation alone, respectively. Finally, the catalytic mechanism was revealed by both experiments and density functional theory calculations (DFT). The results demonstrated that the undercoordinated Cu in CuOx/NT could highly promote the adsorption of ozone with a high adsorption energy of -125.16 eV and the adsorbed ozone was activated immediately, tending to dissociate into a O2 molecule and a surface O atom. Thus, abundant reactive oxygen species, e.g., hydroxyl radical (·OH), superoxide radical (·O2-) and singlet oxygen (1O2), could be generated via chain reactions. Especially, ·OH mainly contributed to the removal of ibuprofen pollutants. This work sheds a light on the design and preparation of highly reactive nanoclusters of metal oxide catalysts for catalytic ozonation of refractory organic pollutants.
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Affiliation(s)
- Yiqing Li
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Manqin Fu
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Xiaoxia Zhang
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Chun He
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation, PR China
| | - Dingsheng Chen
- Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences (SCIES), Ministry of Ecology and Environmental (MEE), Guangzhou 510655, PR China
| | - Ya Xiong
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation, PR China
| | - Liqing Guo
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation, PR China
| | - Shuanghong Tian
- School of Environmental Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation, PR China.
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8
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Li JY, Liu ZQ, Cui YH, Yang SQ, Gu J, Ma J. Abatement of Aromatic Contaminants from Wastewater by a Heat/Persulfate Process Based on a Polymerization Mechanism. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:18575-18585. [PMID: 36642924 DOI: 10.1021/acs.est.2c06137] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A novel approach to the abatement of pollutants consisting of their conversion to separable solid polymers is explored by a heat/persulfate (PDS) process for the treatment of high-temperature wastewaters. During this process, a simultaneous decontamination and carbon recovery can be achieved with minimal use of PDS, which is significantly different from conventional degradation processes. The feasibility of this process is demonstrated by eight kinds of typical organic pollutants and by a real coking wastewater. For the treatment of the selected pollutants, 30.2-91.9% DOC abatement was achieved with 24.8-91.2% carbon recovery; meanwhile, only 5.2-47.0% of PDS was consumed compared to a conventional degradation process. For the treatment of a real coking wastewater, 71.0% DOC abatement was achieved with 66.0% carbon recovery. With phenol as a representative compound, our polymerization-based heat/PDS process is applicable in a wide pH range (3.5-9.0) with a carbon recovery of >87%. Both SO4•- and HO• can be initiators for polymerization, with different contribution ratios under various conditions. Phenol monomers are semioxidized to form phenolic radicals, which are polymerized via chain transfer or chain growth processes to form separable solid phenol polymers, benzenediol polymers, and cross-linked polymers.
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Affiliation(s)
- Jia-Ying Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Hongshan District, Wuhan430074, China
| | - Zheng-Qian Liu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Hongshan District, Wuhan430074, China
| | - Yu-Hong Cui
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Hongshan District, Wuhan430074, China
| | - Sui-Qin Yang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Hongshan District, Wuhan430074, China
| | - Jia Gu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, Jiangsu, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin150090, China
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9
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Yang C, Lin L, Shang S, Ma S, Sun F, Shih K, Li XY. Packed O V-SnO 2-Sb bead-electrodes for enhanced electrocatalytic oxidation of micropollutants in water. WATER RESEARCH 2023; 245:120628. [PMID: 37716294 DOI: 10.1016/j.watres.2023.120628] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/20/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Electrocatalytic oxidation is an appealing treatment option for emerging micropollutants in wastewater, however, the limited reactive surface area and short service lifetime of planar electrodes hinder their industrial applications. This study introduces an innovative electrochemical wastewater treatment technology that employs packed bead-electrodes (PBE) as a dynamic electrocatalytic filter on a dimensionally stable anode (DSA) acting as a current collector. By using PBE, the electroactive volume is expanded beyond the vicinity of the common planar anode to the thick porous media of PBE with a vast electrocatalytic surface area. This greatly enhances the efficiency of electrochemical degradation of micropollutants. The OV-SnO2-Sb PBE filter achieved a nearly 100 % degradation of moxifloxacin (MOX) in under 2 min of single-pass filtration, with a degradation rate over an order of magnitude higher than the conventional electrochemical oxidation processes. The generation of abundant radical species (•OH) and non-radical species (1O2 and O3), along with the enhanced direct oxidation, led to the outstanding performance of the charged PBE system in MOX degradation. The OV-SnO2-Sb PBE was remarkably stable, and the separation between the electroactive PBE layer and the base Ti anode allows for easy renewal of the bead-electrode materials and scaling up of the system for practical applications. Overall, our study presents a dynamic electroactive PBE that advances the electrocatalytic oxidation technology for effective control of emerging pollutants in the water environment. This technology has the potential to revolutionize electrochemical wastewater treatment and contribute to a more sustainable future environment.
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Affiliation(s)
- Chao Yang
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong China
| | - Lin Lin
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China.
| | - Shanshan Shang
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong China; School of Environment and Energy, South China University of Technology, Guangzhou, China
| | - Shengshou Ma
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong China
| | - Feiyun Sun
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, China
| | - Kaimin Shih
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong China
| | - Xiao-Yan Li
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong China; Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China.
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10
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Yan C, Cheng Z, Zhang X, Zhang Y, Chen X, Zeng G, Xu H. Highly efficient catalytic ozonation degradation of levofloxacin by facile hydrogenation-modified red mud wastes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122149. [PMID: 37433366 DOI: 10.1016/j.envpol.2023.122149] [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: 03/27/2023] [Revised: 06/05/2023] [Accepted: 07/03/2023] [Indexed: 07/13/2023]
Abstract
Iron-rich red mud (RM) is a potential catalyst. However, as industrial waste, is strongly alkaline, low effectiveness, and safety concerns are problems that cannot be ignored, it is urgent to mine out a reasonable disposal and utilization technology for the waste. In this study, an effective catalyst (H-RM) was obtained by facile hydrogenation heating modification of red mud. Then above-prepared H-RM was applied in the catalytic ozonation degradation of levofloxacin (LEV). The H-RM exhibited more remarkable catalytic activities than the RM in terms of LEV degradation, and the optimal efficiency can reach over 90% within 50 min. The mechanism experiment proved that the concentration of dissolved ozone and hydroxyl radical (•OH) significantly increased, which enhanced the oxidation effect. Hydroxyl radical played a dominant role in the degradation of LEV. In the safety test, it is concluded that the concentration of total hexavalent chromium (total Cr(Ⅵ)) in the H-RM catalyst decreases and the leaching concentration of water-soluble Cr(Ⅵ) in aqueous solution is low. The results indicated that the hydrogenation technique is an available Cr (Ⅵ) detoxification method for RM. Moreover, the H-RM has excellent catalytic stability, which is beneficial to recycling and maintains high activity. This research provides an effective means to fulfill the reuse of industrial waste as an alternative to standard raw materials, and comprehensive utilization of the waste to attain the purpose of treating pollution with wastes.
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Affiliation(s)
- Chaoqun Yan
- Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, PR China; School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, PR China
| | - Zhiliang Cheng
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, PR China
| | - Xuan Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, PR China
| | - Yumei Zhang
- Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, PR China
| | - Xianghan Chen
- Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, PR China
| | - Guoquan Zeng
- Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, PR China
| | - Heng Xu
- Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, PR China.
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11
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Kong X, Garg S, Chen G, Waite TD. Investigation of the deactivation and regeneration of an Fe 2O 3/Al 2O 3•SiO 2 catalyst used in catalytic ozonation of coal chemical industry wastewater. JOURNAL OF HAZARDOUS MATERIALS 2023; 451:131194. [PMID: 36921420 DOI: 10.1016/j.jhazmat.2023.131194] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/23/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
Catalyst deactivation is an ongoing concern for industrial application of catalytic ozonation processes. In this study, we systematically investigated the performance of a catalytic ozonation process employing Fe2O3/Al2O3•SiO2 catalyst for the treatment of coal chemical industry (CCI) wastewater using pilot-scale and laboratory-scale systems. Our results show that the activity of the Fe2O3/Al2O3•SiO2 catalyst for organic contaminant removal deteriorated over time due to formation of a dense and thin carbonaceous layer on the Fe2O3 catalyst surface. EPR and fluorescence imaging analysis confirm that the passivation layer essentially inhibited the O3-catalyst interaction thereby minimizing formation of surficial •OH and associated oxidation of organic contaminants on the catalyst surface. Calcination was demonstrated to be effective in restoring the activity of the catalyst since the carbonaceous layer could be efficiently combusted during calcination to re-establish the surficial •OH-mediated oxidation process. The combustion of the carbonaceous layer and restoration of the Fe layer on the surface on calcination was confirmed based on SEM-EDX, FTIR and thermogravimetric analysis. Cost analysis indicates that regeneration using calcination is economically viable compared to catalyst replacement. The results of this study are expected to pave the way for developing appropriate regeneration techniques for deactivated catalysts and optimising the catalyst synthesis procedure.
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Affiliation(s)
- Xiangtong Kong
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Shikha Garg
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Guifeng Chen
- China Coal Research Institute, Beijing 100013, PR China
| | - T David Waite
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia; UNSW Centre for Transformational Environmental Technologies (CTET), Yixing, Jiangsu 214206, PR China.
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12
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Shi W, Liu X, Liu Y, Li D, Tong X, Ma J, Wang L. Catalytic ozonation of hard COD in coking wastewater with Fe 2O 3/Al 2O 3-SiC: From catalyst design to industrial application. JOURNAL OF HAZARDOUS MATERIALS 2023; 447:130759. [PMID: 36641843 DOI: 10.1016/j.jhazmat.2023.130759] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 12/24/2022] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Development of robust, reactive, and inexpensive catalyst for pollutants abatement with catalytic ozonation is of great significance. Herein, the effect of a robust and easy-recovery catalyst, Fe2O3/Al2O3-SiC, for the catalytic ozonation of hardly biodegradable COD (hard COD) in coking wastewater had been explored. Al-O-Si bond formed on modified SiC through the substitution of hydrogen in surficial Si-OH groups by Al3+. The Lewis acid sites improved the adsorption of ozone and facilitated the formation of ·OH and O2·-. For coking wastewater treatment, the removal ratio of hard COD and the generation speed of hydroxyl radical (Rct) in the catalytic ozonation process were 71% and 253% higher than those in the ozonation group, respectively. Ozone utilization increased from 0.44 g COD removed/g O3 in the ozonation group to 1.42 g COD removed/g O3 in the Fe2O3/Al2O3-SiC catalytic ozonation group. In a full-scale application, Fe2O3/Al2O3-SiC catalytic ozonation decreased the consumption of O3 to 60 mg L-1 and decreased the operation cost by 50%. These results provided an approachable way for sharing the extraordinary capacity of ozone for contaminants remediation in industrial applications.
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Affiliation(s)
- Wei Shi
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; China Everbright Water Limited, Shenzhen, Guangdong 518000, China
| | - Xiaojing Liu
- China Everbright Water Limited, Shenzhen, Guangdong 518000, China
| | - Yulei Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Dong Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Xili Tong
- State Key Laboratory of Coal Conversion, Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lu Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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13
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Cui B, Fu S, Hao X, Zhou D. Synergistic effects of simultaneous coupling ozonation and biodegradation for coking wastewater treatment: Advances in COD removal, toxic elimination, and microbial regulation. CHEMOSPHERE 2023; 318:137956. [PMID: 36708779 DOI: 10.1016/j.chemosphere.2023.137956] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Coking wastewater contains high concentrations of cyanide, phenols, pyridine, quinoline, and polycyclic aromatic hydrocarbons. Its high toxicity and low biodegradability leads to long hydraulic retention time of biological process and high cost of advanced oxidation process. In this study, the simultaneous combination of ozonation and biodegradation (SCOB) was proposed to treat coking wastewater. Through this process, ozonation breaks the refractory organics, and the biodegradable intermediates are rapidly mineralized by microorganisms protected by porous carriers. Thus, the performances of SCOB, individual biodegradation and ozonation systems were compared. The long-term stability of the SCOB system was evaluated, the contributions of ozonation and biodegradation were analyzed, and their synergistic mechanisms were elaborated. Results showed that biological activity was inhibited in the biodegradation system, and chemical oxygen demand (COD) removal was only 27.6% for the ozonation system. COD and total phenol removal of SCOB system reached 48.5% and 79.3%, respectively, and its kinetic degradation constant of COD was 55.6% higher than that of the ozonation system. Ozonation contributed to the oxidation of organics with unsaturated functional groups as well as soluble microbial products (SMPs), causing the effluent toxicity and chroma to decrease by 82.7% and 270 times, respectively. The higher abundances of microorganisms and functions were enriched in the core of carrier, which became dominant region for biodegradation. Consequently, COD removal of the SCOB system stabilized at >80% for real coking wastewater treatment, confirming its promising potential for the treatment of highly polluted industrial wastewater.
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Affiliation(s)
- Bin Cui
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun, 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun, 130117, China
| | - Shaozhu Fu
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun, 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun, 130117, China
| | - Xin Hao
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun, 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun, 130117, China
| | - Dandan Zhou
- Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun, 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun, 130117, China.
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14
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He C, Zhang Z, Han J, Gong C, Zhang J, Wang L, He P, Shan Y, Zhang X. Advanced treatment of high-salinity wastewater by catalytic ozonation with pilot- and full-scale systems and the effects of Cu 2+ in original wastewater on catalyst activity. CHEMOSPHERE 2023; 311:136971. [PMID: 36309063 DOI: 10.1016/j.chemosphere.2022.136971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/01/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
In this work, heterogeneous catalytic ozonation for the treatment of bio-treated saccharin sodium production wastewater (BSSW) was comprehensively investigated with pilot- and full-scale systems, with special emphasis on the effects of Cu2+ in the original wastewater on catalyst activity. The results of semi-batch and continuous experiments show that heterogeneous catalytic ozonation was effective in removing organic compounds from high-salinity wastewater and that Cu2+ in the original wastewater had a substantial effect on the performance of the process. The retention of 0.15 mM Cu2+ in BSSW increased the chemical oxygen demand (COD) removal by 31% in semi-batch reactor with heterogeneous catalytic ozonation. The stable COD removal efficiencies ranged from 74% to 66.4% for a 9-month operation, indicating that Cu2+ with an appropriate concentration in the original BSSW not only improved the COD removal efficiencies but also inhibited catalyst deactivation; catalyst deactivation was mainly caused by the deposition of inorganic salts on the catalyst surface. Cu2+ combined with some anions to inhibit the formation and deposition of inorganic salts that could easily cause deactivation. The deposited copper salts were readily eliminated, especially during backflushing operations. Moreover, in a full-scale study, heterogeneous catalytic ozonation with 0.15 mM Cu2+ in BSSW exhibited stable COD removal efficiencies (51%-83%) after over 3 years of operation. This study offers a new idea for using the inherent properties of wastewater to perform advanced treatments on high-salinity industrial wastewater through heterogeneous catalytic ozonation.
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Affiliation(s)
- Can He
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China.
| | - Zhongguo Zhang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China.
| | - Junxing Han
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China
| | - Chenhao Gong
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China
| | - Jian Zhang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China
| | - Liangliang Wang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China
| | - Peiran He
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China
| | - Yue Shan
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, PR China; Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing, 100089, PR China; The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing, 100089, China
| | - Xian Zhang
- Inner Mongolia University of Technology, Hohhot, 010051, PR China
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15
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Liu F, Tu Y, Chen J, Shao G, Zhou Z, Tian S, Ren Z. Treatment of saline organic wastewater by heterogeneous catalytic ozonation with Al2O3-PEC-CaxOy as catalysts. CHEMICAL ENGINEERING JOURNAL ADVANCES 2023. [DOI: 10.1016/j.ceja.2023.100447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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16
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Chen X, Gu H, Sun X, Tian J, Li Q, Pan T, Zhang X, Hu X, Linghu S. Improvement of coal gasification reverse osmosis concentrate treatment by Cu-Co-Mn/AC catalytic ozonation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:144-156. [PMID: 36640029 DOI: 10.2166/wst.2022.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Approximately 20% of concentrate will be produced from coal gasification wastewater after reverse osmosis treatment. The organic matter contained in the concentrate affects its evaporation crystallisation; therefore, the refractory organics must be removed. In this study, Cu-Co-Mn/AC catalytic ozonation was used to treat reverse osmosis concentrate (ROC). With the addition of the Cu-Co-Mn/AC catalyst, the production of ·OH increased by 82 μmol/L, thereby enhancing the ozonation performance. The pH, ozone dosage, and catalyst dosage all affected the catalytic ozonation performance. By constructing a response surface model, it was found that the catalyst dosage had the most significant effect on the catalytic ozonation performance. The predicted optimal reaction conditions were pH = 9.02, ozone dosage = 1.08 g/L, and catalyst dosage = 1.33 g/L, under which the chemical oxygen demand (COD) removal reached a maximum of 81.49%.
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Affiliation(s)
- Xiurong Chen
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail: ; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Hao Gu
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Xiaoli Sun
- Shanghai Municipal Engineering Design Institute (Group) Co., LTD, Shanghai 200082, China
| | - Jinyi Tian
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Qiuyue Li
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Tao Pan
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Xinyu Zhang
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Xueyang Hu
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Shanshan Linghu
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China E-mail:
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17
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Ma N, Ru Y, Weng M, Chen L, Chen W, Dai Q. Synergistic mechanism of supported Mn-Ce oxide in catalytic ozonation of nitrofurazone wastewater. CHEMOSPHERE 2022; 308:136192. [PMID: 36041529 DOI: 10.1016/j.chemosphere.2022.136192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
In this study, the catalytic materials of MnOx/γ-Al2O3, CeO2/γ-Al2O3, and MnxCe1-xO2/γ-Al2O3 for catalytic ozonation were synthesized. The catalysts were used in heterogeneous catalytic ozonation of the wastewater containing ntrofurazone (NFZ). The effects of the catalytic ozonation operational factors were systematically evaluated in terms of ozone dosing, catalyst dosing, initial NFZ concentration, and pH. The results showed that the catalytic activity of the MnxCe1-xO2/γ-Al2O3 was higher than that of the MnOx/γ-Al2O3 and CeO2/γ-Al2O3. The kinetics analysis revealed that bimetallic loading has a synergistic effect and the mechanism of this effect was investigated in the catalytic ozonation system. The catalysts were characterized by FESEM, EDS, XRD, XPS, IR, and BET. The characteristics of the catalysts revealed that Mn could alter the oxide species on the metal surface and interfere with the formation of CeO2 crystals, which led to smaller grains, enhanced adsorption oxygen, and greater specific surface area. The MnxCe1-xO2/γ-Al2O3 crystals could form a solid solution, which helps higher catalytic activity. This study adds to the understanding of the synergistic mechanism of the loaded Ce-Mn oxide catalysts in the heterogeneous catalytic ozonation system and provides a feasible method for degrading pharmaceutical wastewater.
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Affiliation(s)
- Nengwei Ma
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Yifan Ru
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Mili Weng
- College of Environmental and Resources Sciences, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Lu Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Wenqing Chen
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Qizhou Dai
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China.
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18
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Wang Z, Xu T, Tang D, Zhou Y, Zheng B, Qiu Y, He D, Zeng X, Jiang R, Mao X. Catalytic ozonation with γ-Al2O3 sphere supported highly dispersed iron species: preparation, performance and catalytic mechanism. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Shu X, Bi H, Wang J, Yang J, Wang J, Liu G, Su B. Highly stable and efficient calcined γ-Al 2O 3 catalysts loaded with MnO x-CeO x for the ozonation of oxytetracycline. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:80399-80410. [PMID: 35715680 DOI: 10.1007/s11356-022-21355-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
Catalytic ozonation with supported metal oxides is a promising strategy for addressing refractory pollutants in wastewater. In this study, γ-Al2O3 supported MnOx-CeOx catalysts (MC1, MC2, and MC3) obtained at different calcination temperatures (400 °C, 550 °C, and 700 °C) were applied as effective catalysts for ozonation and explored the feasibility of the treatment of oxytetracycline (OTC) wastewater. Comparatively, the MC2 possessed the highest molar ratios of Mn3+/Mn4+ (1.60) and Ce3+/Ce4+ (0.96), the largest surface area (273.8 m2 g-1) with a petal-shaped structure, and most abundant surface hydroxyls (3.78 mmol g-1). These physicochemical characteristics benefited the surface reaction and resulted in the acceleration of ozone decomposition, electron transfer, and •OH generation, thereby improving the catalyst's adsorption ability and catalytic activity. The combination with MC2 increased the OTC and COD removal of the ozonation process from 59.1% and 29.0% to 94.7% and 83.3% in 25 min, respectively. By employing electron paramagnetic resonance (EPR) and radical quenching experiments, it was verified that •OH species generation promoted the mineralization of OTC. The possible degradation pathways of OTC were investigated through mass spectrometry, and the route consisted of dehydration, deamination, and demethylation. Moreover, during a 12-day continuous experiment, MC2 catalyst exhibited excellent reusability and catalytic stability, with COD removal efficiencies above 80%.
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Affiliation(s)
- Xinpeng Shu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Huaqi Bi
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jun Wang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jiaxin Yang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jue Wang
- Third Highway Engineering CO., LTD, China Communications Construction CO., LTD, Beijing, 100000, China
| | - Guangqing Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Bensheng Su
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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20
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Yuan R, Qin Y, He C, Wang Z, Bai L, Zhao H, Jiang Z, Meng L, He X. Fe-Mn-Cu-Ce/Al2O3 as an efficient catalyst for catalytic ozonation of bio-treated coking wastewater: Characteristics, efficiency, and mechanism. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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21
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Catalytic ozonation performance of calcium-loaded catalyst (Ca-C/Al2O3) for effective treatment of high salt organic wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121937] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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22
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Treatability Studies on the Optimization of Ozone and Carbon Dosages for the Effective Removal of Contaminants from Secondary Treated Effluent. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/1998549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This study investigates the novel and advanced integrated pilot-scale treatment system of removal of contaminants in the secondary effluent from municipal wastewater. The main intent of this work is to assess the combination of pressure sand filter (PSF), ultrafiltration (UF), ozone (O3), and granular activated carbon (GAC) to treat wastewater and evaluate its suitability for water reuse. The experiments were carried out in a following condition:
,
, and
. Configuration 1 was found to be more effective when compared to the other two and almost there occurred complete removal of contaminants. Whereas configuration 2 had the lowest removal efficiency of all, and configuration 3 had quite positive results. The influence of process parameters such as ozone dosage, flow rate, and filtration time was optimized. The optimized filtration time was 20 min with the filtration feed flow rate of 300 LPH. The best configuration of this treatment process produced a removal efficiency of about 80 to 90% with the ozone dosage of 8.33 mg/L with a flow rate of 4 l/min, whereas there occurred complete removal by the subsequent action of GAC. Moreover, the biodegradability of wastewaters as measured by the BOD5/COD ratio increased from 0.45 to 0.53. The proposed integrated pilot-scale process was effective in removing contaminants to the required level of discharge in the environment or reuse and it will pave the way to provide significant benefits to wastewater treatment.
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23
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Priyadarshini M, Das I, Ghangrekar MM, Blaney L. Advanced oxidation processes: Performance, advantages, and scale-up of emerging technologies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115295. [PMID: 35597211 DOI: 10.1016/j.jenvman.2022.115295] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 05/03/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Advanced oxidation processes (AOPs) are promising technologies for partial or complete mineralization of contaminants of emerging concern by highly reactive hydroxyl, hydroperoxyl, superoxide, and sulphate radicals. Detailed investigations and reviews have been reported for conventional AOP systems that have been installed in full-scale wastewater treatment plants. However, recent efforts have focused on the peroxymonosulphate, persulphate, catalytic ozonation, ultrasonication and hydrodynamic cavitation, gamma radiation, electrochemical oxidation, modified Fenton, and plasma-assisted AOPs. This critical review presents the detailed mechanisms of emerging AOP technologies, their performance for treatment of contaminants of emerging concern, the relative advantages and disadvantages of each technology, and the remaining challenges to scale-up and implementation. Among the evaluated technologies, the modified electrochemical oxidation, gamma radiation, and plasma-assisted systems demonstrated the greatest potential for successful and sustainable implementation in wastewater treatment due to their environmental safety, compatibility, and efficient transformation of contaminants of emerging concern by a variety of reactive species. The other emerging AOP systems were also promising, but additional scale-up trials and a deeper understanding of their reaction kinetics in complex wastewater matrices are necessary to determine the technical and economic feasibility of full-scale processes.
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Affiliation(s)
- Monali Priyadarshini
- School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal, 721302, India
| | - Indrasis Das
- Environmental Engineering Department, CSIR-Central Leather Research Institute, Adyar, Chennai, Tamil Nadu, 600020, India; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
| | - Makarand M Ghangrekar
- School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal, 721302, India; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Lee Blaney
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA.
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24
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Wang Y, Yu G. Challenges and pitfalls in the investigation of the catalytic ozonation mechanism: A critical review. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129157. [PMID: 35605501 DOI: 10.1016/j.jhazmat.2022.129157] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/30/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Catalytic ozonation is a promising technology for pollutant abatement in water and wastewater treatment. However, there are many controversies and contradictions regarding the mechanisms of catalytic ozonation in literature, which has seriously confounded the development of the technology towards industrial applications. Herein, a critical review of literature is conducted to reveal possible underlying causes of the controversies and contradictions, and several common pitfalls in the experimental design and data interpretation are identified, e.g., the fundamentally flawed quenching method popularly used for evaluating the role of reactive oxygen species for pollutant abatement in catalytic ozonation and the neglect of monitoring ozone transfer doses in lab-scale experiments. Based on the identified pitfalls, several measures are suggested to improve the experimental design and data interpretation of catalytic ozonation studies. In addition, recent advances in mechanistic understanding of catalytic ozonation by principle-based modelling approaches are described. Finally, additional works that are needed to shrink the gap between academic research and practical applications and the prospect of catalytic ozonation in future water and wastewater treatment systems are analyzed.
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Affiliation(s)
- Yujue Wang
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing 100084 China.
| | - Gang Yu
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing 100084 China
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Guan Z, Guo Y, Mo Z, Chen S, Liang J, Liao X, Zhang Y, Huang Z, Song W, Xu Y, Ou X, Sun S. High-efficiency treatment of electroless nickel plating effluent using core-shell MnFe 2O 4-C@Al 2O 3 combined with ozonation: Performance and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 433:128768. [PMID: 35366442 DOI: 10.1016/j.jhazmat.2022.128768] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/16/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Heterogeneous catalytic ozonation (HCO) has been widely applied for the treatment of wastewater. In order to maintain the structural stability and surface catalytic activity of heterogeneous catalysts during the HCO treatment of electroless nickel plating effluent (ENPE), a MnFe2O4-C@Al2O3 catalyst with a core-shell structure was synthesized. MnFe2O4-C@Al2O3 was characterized and applied in the removal of total nickel (TNi) and organic contaminants from actual ENPE, using a coupled system of HCO combined with a magnetic dithiocarbamate chelating resin (MnFe2O4-C@Al2O3/O3-MDCR). Results show that embedding Al2O3 with C and MnFe2O4 significantly increased the TNi removal efficiency (99.3%), enhanced the O3-utilization efficiency and improved the generation of reactive oxygen species (ROS). The reaction rate (k = 0.7641 min-1) and O3-utilization efficiency established for TNi removal (ΔTNi/ΔO3 =0.221) by the MnFe2O4-C@Al2O3/O3-MDCR system, were 220% and 140% higher than the Al2O3/O3-MDCR system, respectively. Catalytic mechanism analysis demonstrated that surface hydroxyl groups, oxygen vacancy, metals, the carbon surface and its functional groups, can all potentially serve as catalytic active sites, with 1O2 and •OH considered to the predominant ROS. Overall, these findings verify that the synthesized MnFe2O4-C@Al2O3 catalyst possesses excellent catalytic capabilities and outstanding structural stability, making it suitable for practical application in the treatment of wastewater effluent.
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Affiliation(s)
- Zhijie Guan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Yanping Guo
- Guangdong Province Solid Waste Recycling and Heavy Metal Pollution Control Engineering Technology Research Center, Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, China
| | - Zhihua Mo
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Shaojin Chen
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jialin Liang
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xiaojian Liao
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Yumin Zhang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhenhua Huang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Weifeng Song
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Yanbin Xu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xuelian Ou
- Guangdong Province Solid Waste Recycling and Heavy Metal Pollution Control Engineering Technology Research Center, Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, China
| | - Shuiyu Sun
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Province Solid Waste Recycling and Heavy Metal Pollution Control Engineering Technology Research Center, Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, China.
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Enhancing Ozone Oxidation of Reverse Osmosis Concentrate Using Activated Carbon-Supported Cu–Co–Mn Catalysts. Catal Letters 2022. [DOI: 10.1007/s10562-022-04064-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Wang D, Yang Z, Lu X, Wang L, Song S, Ma J. 催化臭氧净水过程中催化材料晶面的作用. CHINESE SCIENCE BULLETIN-CHINESE 2022. [DOI: 10.1360/tb-2022-0231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pang Z, Luo P, Wei C, Qin Z, Wei T, Hu Y, Wu H, Wei C. In-situ growth of Co/Ni bimetallic organic frameworks on carbon spheres with catalytic ozonation performance for removal of bio-treated coking wastewater. CHEMOSPHERE 2022; 291:132874. [PMID: 34774613 DOI: 10.1016/j.chemosphere.2021.132874] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 10/30/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
The Co/Ni-MOFs@CS composite derived from Co/Ni bimetallic organic framework was synthesized and characterized. Compared with a single O3 system, the synergy between carbon sphere (CS) and metal organic frameworks (MOFs) improved the electron transfer efficiency and the formation rate of •OH. The coexistence of Co and Ni in various valence states might accelerate the cyclic process of Co(II)/Co(III) and Ni(II)/Ni(III), thereby improving the catalytic activity. Taking levofloxacin as a model pollutant, the mechanism of catalytic process was discussed, and the catalytic reaction was successfully applied to the removal of residual organics in bio-treated coking wastewater (BTCW). The removal rates of chemical oxygen demand (COD) and total organic carbon (TOC) in 60 min were 50.85%-53.71% and 39.98%-43.48%. From the perspective of UV absorption and 3D EEM, catalytic ozonation was more conducive to breaking the electronic protection of inert organic molecules such as heterocyclic compounds, and achieving higher efficiency of mineralization. It provides a new idea for catalytic ozonation technology of wastewater treatment in the future from theory, technology and application.
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Affiliation(s)
- Zijun Pang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Pei Luo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, PR China
| | - Cong Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Zhi Qin
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Tuo Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Yun Hu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Haizhen Wu
- School of Biology and Biological Engineering, 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.
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Yuan Y, Garg S, Wang Y, Li W, Chen G, Gao M, Zhong J, Wang J, Waite TD. Influence of salinity on the heterogeneous catalytic ozonation process: Implications to treatment of high salinity wastewater. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127255. [PMID: 34844366 DOI: 10.1016/j.jhazmat.2021.127255] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/02/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
The heterogeneous catalytic ozonation process is a promising treatment option for high salinity reverse osmosis concentrate (ROC) however the influence of salts on the catalyst performance is not well understood. In this work, we investigate the effect of salts on the performance of the catalytic ozonation process for treatment of synthetic ROC using a commercially available Fe-loaded Al2O3 catalyst. Our results show that the presence of salts influences the rate and extent of degradation of organic compounds present in the synthetic ROC when subjected to the heterogeneous catalytic ozonation process. Scavenging of aqueous O3 by chloride ions and/or transformation of organics (particularly humics) to more hydrophobic form as a result of charge shielding between adjacent functional groups and/or intramolecular binding by cations inhibits the bulk oxidation of organics to a measurable extent. While the scavenging of aqueous hydroxyl radicals at the salt concentrations investigated here was minimal, the accumulation of chloride ions in the electric double layer near the catalyst surface, particularly when pH< pHpzc, results in more significant scavenging of surface associated hydroxyl radicals. Overall, the presence of salts (particularly chloride ions) has a significant influence on the performance of both conventional and catalytic ozonation processes with some scope to mitigate this effect through appropriate choice of catalyst.
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Affiliation(s)
- Yuting Yuan
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Shikha Garg
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Yuan Wang
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia; UNSW Centre for Transformational Environmental Technologies (CTET), Yixing, Jiangsu Province 214206, PR China
| | - Wenbo Li
- China Coal Research Institute, Beijing 100013, PR China
| | - Guifeng Chen
- China Coal Research Institute, Beijing 100013, PR China
| | - Minglong Gao
- China Coal Research Institute, Beijing 100013, PR China
| | - Jinlong Zhong
- China Coal Research Institute, Beijing 100013, PR China
| | - Jikun Wang
- China Coal Research Institute, Beijing 100013, PR China
| | - T David Waite
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia; UNSW Centre for Transformational Environmental Technologies (CTET), Yixing, Jiangsu Province 214206, PR China.
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Manikandan S, Subbaiya R, Saravanan M, Ponraj M, Selvam M, Pugazhendhi A. A critical review of advanced nanotechnology and hybrid membrane based water recycling, reuse, and wastewater treatment processes. CHEMOSPHERE 2022; 289:132867. [PMID: 34774910 DOI: 10.1016/j.chemosphere.2021.132867] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/20/2021] [Accepted: 11/08/2021] [Indexed: 05/28/2023]
Abstract
One of the modern challenges is to provide clean and affordable drinking water. Water scarcity is caused by the growing population in the world and pollutants contaminate all remaining water sources. Innovative water treatment solutions have been provided by nanotechnology. Microorganisms, organic suspensions, and inorganic heavy metal ions, among other things, are common water contaminants. Since antiquity, a wide range of water clean-up methods have been employed to address this issue. Breakthroughs in water purification procedures have occurred during the previous four decades, with the most significant one being the use of nanomaterials and nanomembranes. Nanoparticles and nanomembranes (polymeric membranes) have recently been used in engineered materials (TiO2, ZnO, CuO, Ag, CNT's and mixed oxide nanoparticles, for example). Engineered nanomembranes, nanocomposites and nanoparticles have been used in this review article's discussion of water purification technologies. The review also discusses the risk and solutions of using nanoparticles and nanocomposites in the future.
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Affiliation(s)
- Sivasubramanian Manikandan
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Nagar, Thandalam, Chennai, 602 105, Tamil Nadu, India
| | - Ramasamy Subbaiya
- Department of Biological Sciences, School of Mathematics and Natural Sciences, The Copperbelt University, Riverside, Jambo Drive, P O Box, 21692, Kitwe, Zambia
| | - Muthupandian Saravanan
- Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 60007, Chennai, India.
| | - Mohanadoss Ponraj
- Department of Biological Sciences, School of Mathematics and Natural Sciences, The Copperbelt University, Riverside, Jambo Drive, P O Box, 21692, Kitwe, Zambia
| | - Masilamani Selvam
- Department of Biotechnology, Sathyabama Institute of Science and Technology, Jeppiaar Nagar, Chennai, 600 095, Tamil Nadu, India
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
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Li W, Zhang M, Wang H, Lian J, Qiang Z. Removal of recalcitrant organics in reverse osmosis concentrate from coal chemical industry by UV/H 2O 2 and UV/PDS: Efficiency and kinetic modeling. CHEMOSPHERE 2022; 287:131999. [PMID: 34454225 DOI: 10.1016/j.chemosphere.2021.131999] [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: 05/31/2021] [Revised: 08/16/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
The lack of stability in catalytic ozonation treatment of reverse osmosis (RO) concentrate from coal chemical industry calls for new advanced oxidation processes. Herein, UV/H2O2 and UV/PDS were employed to remove the bulk recalcitrant organics in the RO concentrate with a focus on the process efficiency and kinetic modeling. Results show that UV/H2O2 overmatched UV/PDS in reducing the COD and DOC of the wastewater and the advantage became more evident in aspects of biodegradability improvement and energy cost. Specifically, the COD and DOC were removed by 62.0% and 55.5% with UV/H2O2 (6 mM) while the BOD5/COD was elevated to 0.54 at a specific energy consumption of 0.83 kWh g-1 (lab-scale). The UV/H2O2 process also exhibited a good adaptability to the fluctuation of wastewater quality. Afterwards, the reaction rate constants of the bulk organics upon UV photolysis and HO• oxidation were calculated based on pseudo-first-order kinetics and radical steady-state approximation of DOC removal in the bench-scale UV/H2O2 reactor. A computational fluid dynamics model was then developed for the analysis of distributions of flow, radiation and chemicals in flow-through reactors which facilitated the practical process efficiency assessment. This work demonstrates the applicability of UV/H2O2 in removing recalcitrant organics in the RO concentrate and presents an approach from bench-scale experiments to flow-through system evaluation.
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Affiliation(s)
- Wentao Li
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Miao Zhang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Ganzhou Key Laboratory of Basin Pollution Simulation and Control, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Hui Wang
- SINOPEC Research Institute of Petroleum Processing, Beijing, 100083, China
| | - Junfeng Lian
- Ganzhou Key Laboratory of Basin Pollution Simulation and Control, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Zhimin Qiang
- Key Laboratory of Drinking Water Science and Technology, 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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Abstract
Biological processes have high removal efficiencies and low operational costs, but the secondary effluent of coking wastewater (CWW), even at a low concentration, is difficult for microorganisms to degrade directly. In this study, glucose was used as a carbon source and co-metabolic substrate for microbial acclimation in order to enhance the advanced treatment of coking wastewater (CWW). The removal performance of the pollutants, especially recalcitrant compounds, was studied and the changes in the microbial community structure after activated sludge acclimation were analyzed. The effect of glucose addition on the secondary biochemical effluent of coking wastewater (SBECW) treatment by the acclimated sludge was further studied by a comparison between the performance of two parallel reactors seeded with the acclimated sludge. Our results showed that the concentrations of chemical oxygen demand (COD), total organic carbon (TOC), and UV absorption at 254 nm (UV254) of the wastewater decreased in the acclimation process. Refractory organic matter, such as polycyclic aromatic hydrocarbons and nitrogen-containing heterocyclics, in the SBECW was effectively degraded by the acclimated sludge. High-throughput sequencing revealed that microbes with a strong ability to degrade recalcitrant compounds were enriched after acclimation, such as Thauera (8.91%), Pseudomonas (3.35%), and Blastocatella (10.76%). Seeded with the acclimated sludge, the reactor with the glucose addition showed higher COD removal efficiencies than the control system without glucose addition (p < 0.05). Collectively, glucose addition enhanced the advanced treatment of coking wastewater (CWW).
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Wang S, Han P, Zhao Y, Sun W, Wang R, Jiang X, Wu C, Sun C, Wei H. Oxygen-vacancy-mediated LaFe 1-xMn xO 3-δ perovskite nanocatalysts for degradation of organic pollutants through enhanced surface ozone adsorption and metal doping effects. NANOSCALE 2021; 13:12874-12884. [PMID: 34477771 DOI: 10.1039/d1nr03055h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Here, a series of LaFe1-xMnxO3-δ perovskite nanocatalysts were synthesized and tested for the catalytic ozonation of m-cresol for the first time. The B-site cation is regulated by metal doping, and the resulting LaFe0.26Mn0.74O3-δ with a rhombohedral structure showed excellent catalytic performance and structural stability owing to the abundant oxygen vacancies and the higher Fe2+/Fe3+ and Mn3+/Mn4+ ratios. Theoretical calculations have revealed that the oxygen vacancy has a strong affinity for ozone adsorption, and thus facilitated ozone decomposition by extending the O-O bond. Combined with low-valence Fe2+ and Mn3+ cations, the electron transfer in the catalytic ozonation reaction has been enhanced, which has promoted the production of reactive oxygen species (ROS). Taken together, the degradation pathway of m-cresol was proposed. Additionally, the LaFe0.26Mn0.74O3-δ catalyst remained stable during a 60 h reaction. This study has not only revealed the adsorption/decomposition pathways of ozone using LaFe0.26Mn0.74O3-δ perovskite nanocatalysts but also provided indepth insight into the electron transfer pathway on the surface of nanocatalysts during the process of catalytic ozonation.
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Affiliation(s)
- Shengzhe Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China.
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Treatment of Bio-Treated Coking Wastewater by Catalytic Ozonation with Semi-Batch and Continuous Flow Reactors. WATER 2020. [DOI: 10.3390/w12092532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, the treatment of bio-treated coking wastewater (BCW) by catalytic ozonation was conducted in semi-batch and continuous flow reactors. The kinetics of chemical oxygen demand (COD) removal were analyzed using BCWs from five coking plants. An integral reactor with catalytic ozonation stacked by ozone absorption (IR) was developed, and its efficiency was studied. The catalyst of MnxCe1-xO2/γ-Al2O3 was efficient in the catalytic ozonation process for the treatment of various BCWs. The chemical oxygen demand (COD) removal efficiencies after 120 min reaction were 64–74%. The overall apparent reaction rate constants were 0.0101–0.0117 min−1, which has no obvious relationship with the initial COD of BCW and pre-treatment biological process. The IR demonstrated the highest efficiency due to the enhancement of mass transfer and the utilization efficiency of ozone. Bypass internal circulation can further improve the reactor efficiency. The optimal results were obtained with the ozone absorption section accounting for 19% of the valid water depth in the reactor and 250% of circulation flow ratio. The long-term and full-scale application of the novel reactor in a continuous mode indicated stable removal of COD and polycyclic aromatic hydrocarbons (PAHs). The results showed that the system of IR is a promising reactor type for tertiary treatment of coking wastewater by catalytic ozonation.
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