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Wu S, Liu J, Li J, You W, Zhong K, Feng L, Han S, Zhang X, Pan T, Liu W, Zheng H. PMS coupled Mn(II) mediated electrochemistry processes (E-Mn(II)-PMS) on the efficient RB19 wastewater treatment: Focus on the regulation and reinforcement of Mn(III)/Mn(II). ENVIRONMENTAL RESEARCH 2024; 240:117220. [PMID: 37863166 DOI: 10.1016/j.envres.2023.117220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/05/2023] [Accepted: 09/19/2023] [Indexed: 10/22/2023]
Abstract
Dye wastewater, represented by reactive blue 19 (RB19), severely threatens the aquatic ecological environment and human health, such that an efficient RB19 wastewater treatment technology should be urgently developed. Based on manganese ion-mediated electrochemistry, PMS was introduced to develop a novel electrocatalytic system (E-Mn(II)-PMS) that can efficiently remove and degrade RB19. The synergistic effect between E, Mn(II), and PMS was verified in this study through comparative experiments of a wide variety of systems. The removal efficiency of RB19 reached 95.1% in 50 min under reasonable power consumption (3.29 kWh/m3). Moreover, the effects exerted by different operating conditions (e.g., initial pH, current density, RB19 concentration, Mn(II) concentration, as well as PMS concentration) and water matrix on the degradation efficiency of RB19 were explored through single factor experiments. The active oxidation species (ROS) and their contribution rate for the degrading and removing RB19 were studied through quenching experiments, EPR experiments, TMT-15 metal capture experiments, as well as PP complexation experiments. The role played by non-free radicals took on critical significance in the oxidation removal of RB19, which comprised direct electro oxidation, Mn(III) oxidation, and 1O2 oxidation. The enhancement effect of free radicals (SO4·- and HO∙) was not sufficiently significant, with a low degree of contribution. The oxidation effect of the anode facilitated the conversion of Mn (II) to Mn (III), which was employed in PMS for expediting the production of 1O2. The reduction effect of the cathode blocked the production of Mn (IV) as a side reaction, such that the continuous circulation of manganese ions between divalent and trivalent was promoted. Meanwhile, the cathode reacted with PMS to generate a small part of SO4·- and HO∙. In addition, the reaction active site of RB19 was predicted, and a possible degradation pathway was proposed in accordance with the mass spectrometry results and the DFT calculation. As revealed by the results of the QSAR analysis and the plant culture experiments, the biological toxicity of RB19 was markedly reduced after the sample was administrated with E-Mn(II)-PMS. E-Mn(II)-PMS-mediated electrochemical technology displays several advantages (e.g., high efficiency, low consumption, recyclability, wide pH window, and strong applicability) while showing promising market development and utilization for treating dye wastewater.
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Affiliation(s)
- Shenyu Wu
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Jiajun Liu
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Junda Li
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Weihong You
- School of Civil Engineering, Southeast University, Nanjing, 210096, China
| | - Kunyu Zhong
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China.
| | - Shuai Han
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Xionghao Zhang
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Tingyu Pan
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Weiseng Liu
- School of Civil and Transportation Engineering, Guangdong University of Technology, No100, Waihuan Xi Road, Guangzhou, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, China
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
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Wang Z, Liu B, Ji C, Tang L, Huang B, Feng L, Feng Y. Insight into electrochemically boosted trace Co(II)-PMS catalytic process: Sustainable Co(IV)/Co(III)/Co(II) cycling and side reaction blocking. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130905. [PMID: 36738620 DOI: 10.1016/j.jhazmat.2023.130905] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/18/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
A novel homogeneous electrocatalytic system was constructed by current-assisted trace Co(II) activating PMS (ECP) to remove reactive blue 19 (RB19). More than 93 % of RB19 was rapidly removed with only a trace dose, and the PMS was 98.35 % utilized during the reaction. By exploring the active species and analyzing the PMS consumption, it was found that current strongly accelerated the Co(III)/Co(II) redox cycle by providing electrons to Co(III), and inhibited the side reaction thus improving the PMS utilization. Electric energy per order was very low, only 0.26 kWh·m3. Radicals (SO4•-) and non-radicals (Co(III), Co(IV) and 1O2) participated in ECP system, in which SO4•- was dominant. By excluding the other three precursors (PMS, •OH and O2•-), the side reaction product SO5•- was identified as the source of 1O2 in ECP system. Combining chelating agent EDTA and chemical probe PMSO, Co(IV) was considered formed by single and double charge transfer. Five degradation pathways of RB19 were proposed using mass spectrometry and DFT calculation. The ecotoxicity and mutagenicity of RB19 and its transformation products were predicted using software simulation. These studies provided an interesting insights into the synergistic Co(II)-PMS systems and offered a new strategy for electrochemical processes.
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Affiliation(s)
- Zizeng Wang
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Bingzhi Liu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China.
| | - Changhao Ji
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Lei Tang
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Baorong Huang
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Yong Feng
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
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Li W, Li W, He K, Tang L, Liu Q, Yang K, Chen YD, Zhao X, Wang K, Lin H, Lv S. Peroxymonosulfate activation by oxygen vacancies-enriched MXene nano-Co 3O 4 co-catalyst for efficient degradation of refractory organic matter: Efficiency, mechanism, and stability. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128719. [PMID: 35325862 DOI: 10.1016/j.jhazmat.2022.128719] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/14/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Cobalt-based catalysts have been widely explored in the degradation of organic pollutants based on peroxymonosulfate (PMS) activation. Herein, we report an MXene nano-Co3O4 co-catalyst enriched with oxygen vacancies (Ov) and steadily fixed in nickel foam (NF) plates, which is used as an efficient and stable PMS activator for the removal of 1,4-dioxane (1,4-D). Ti originating from MXene was doped into the Co3O4 crystal, generating large amounts of Ov, which could provide more active sites to enhance PMS activation and facilitate the transformation of Co2+ and Co3+, causing a high stability. As a result, the 1,4-D removal efficiency of the NF/MXene-Co3O4/PMS system (kapp: 2.41 min-1) was about four times higher than that of the NF/Co3O4/PMS system (kapp: 0.62 min-1). In addition, singlet oxygen was the predominant reactive oxygen species. Notably, the 1,4-D removal of the NF/MXene-Co3O4/PMS system was over 95% after 20 h operation in the single-pass filtration mode with only 3.72% accumulative Co leaching, showing excellent stability and reusability of NF/MXene-Co3O4. This work provides a defect engineering strategy to design a robust and stable catalytic system for water treatment, which expands the application of MXene in the field of environmental remediation.
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Affiliation(s)
- Wei Li
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Wei Li
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| | - Kuanchang He
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Longxiang Tang
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Qian Liu
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Kui Yang
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Yi-Di Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xin Zhao
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Kai Wang
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Hui Lin
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| | - Sihao Lv
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
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Huang B, Xiong Z, Zhou P, Zhang H, Pan Z, Yao G, Lai B. Ultrafast degradation of contaminants in a trace cobalt(II) activated peroxymonosulfate process triggered through borate: Indispensable role of intermediate complex. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127641. [PMID: 34742611 DOI: 10.1016/j.jhazmat.2021.127641] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/08/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Among all homogeneous catalysts, cobalt ions show the highest catalytic performance for the activation of peroxymonosulfate (PMS). Herein, we report a Co2+/PMS/H3BO3 system that can effectively generate reactive oxygen species (ROS) with ultra-low Co2+ dosage (5 μg/L). Co2+/PMS/H3BO3 system showed ultrafast reactivity and wide applicability for various pollutants. Sulfamethoxazole (SMX, 2 mg/L) could be completely removed within 5 min, and the corresponding kobs reached up to 1.1239 min-1. The introduction of H3BO3 significantly promoted the generation of ROS. The turnover frequency (TOF) calculated through dividing kobs by the cobalt ions concentration is as high as 224.78 min-1, which is much higher than most of the current research. Through a series of theoretical and experimental analyses, the complex of H2BO3--MS (HSO5B(OH)3-) was inferred to be the key substance that led to the excellent performance of the system. This work provides new insights into the Co2+/PMS system in the presence of borate buffer.
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Affiliation(s)
- Bingkun Huang
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Zhaokun Xiong
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China.
| | - Peng Zhou
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Heng Zhang
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Zhicheng Pan
- Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China
| | - Gang Yao
- Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Institute of Environmental Engineering, RWTH Aachen University, Germany
| | - Bo Lai
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
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Wu X, Rigby K, Huang D, Hedtke T, Wang X, Chung MW, Weon S, Stavitski E, Kim JH. Single-Atom Cobalt Incorporated in a 2D Graphene Oxide Membrane for Catalytic Pollutant Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:1341-1351. [PMID: 34964609 DOI: 10.1021/acs.est.1c06371] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We introduce a new graphene oxide (GO)-based membrane architecture that hosts cobalt catalysts within its nanoscale pore walls. Such an architecture would not be possible with catalysts in nanoscale, the current benchmark, since they would block the pores or alter the pore structure. Therefore, we developed a new synthesis procedure to load cobalt in an atomically dispersed fashion, the theoretical limit in material downsizing. The use of vitamin C as a mild reducing agent was critical to load Co as dispersed atoms (Co1), preserving the well-stacked 2D structure of GO layers. With the addition of peroxymonosulfate (PMS), the Co1-GO membrane efficiently degraded 1,4-dioxane, a small, neutral pollutant that passes through nanopores in single-pass treatment. The observed 1,4-dioxane degradation kinetics were much faster (>640 times) than the kinetics in suspension and the highest among reported persulfate-based 1,4-dioxane destruction. The capability of the membrane to reject large organic molecules alleviated their effects on radical scavenging. Furthermore, the advanced oxidation also mitigated membrane fouling. The findings of this study present a critical advance toward developing catalytic membranes with which two distinctive and complementary processes, membrane filtration and advanced oxidation, can be combined into a single-step treatment.
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Affiliation(s)
- Xuanhao Wu
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Kali Rigby
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Dahong Huang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Tayler Hedtke
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Xiaoxiong Wang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Myoung Won Chung
- School of Health and Environmental Science, Korea University, Seoul 02841, Republic of Korea
| | - Seunghyun Weon
- School of Health and Environmental Science, Korea University, Seoul 02841, Republic of Korea
| | - Eli Stavitski
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jae-Hong Kim
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
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Yang LX, Yang JCE, Yuan BL, Fu ML. MOFs-derived magnetic hierarchically porous CoFe2O4-Co3O4 nanocomposite for interfacial radicals-induced catalysis to degrade chloramphenicol: Structure, performance and degradation pathway. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127859] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Qin Y, Li X, Wang L, Luo J, Li Y, Yao C, Xiao Z, Zhai S, An Q. Valuable cobalt/biochar with enriched surface oxygen-containing groups prepared from bio-waste shrimp shell for efficient peroxymonosulfate activation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119901] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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A critical review on graphitic carbon nitride (g-C3N4)-based composites for environmental remediation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119769] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Bai L, He J, Liu L, Guan Z, Wang G. Tunable synthesis of cage-like Co3O4/N–C composite and nest-like Co3O4 for oxidative degradation of Bisphenol A. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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10
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Kiejza D, Kotowska U, Polińska W, Karpińska J. Peracids - New oxidants in advanced oxidation processes: The use of peracetic acid, peroxymonosulfate, and persulfate salts in the removal of organic micropollutants of emerging concern - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:148195. [PMID: 34380254 DOI: 10.1016/j.scitotenv.2021.148195] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/12/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
In recent years, there has been increasing interest in using of advanced oxidation processes in water and wastewater decontamination. As a new oxidants peracids, mainly peracetic acid (PAA) and peracid salts, i.e. peroxymonosulfate (PMS) and persulfate (PS) are used. The degradation process of organic compounds takes place with the participation of radicals, including hydroxyl (•OH) and sulfate (SO4•-) radicals derived from the peracids activation processes. Peracids can be activated in homogeneous systems (UV radiation, d-electron metal ions, e.g. Fe2+, Co2+, Mn2+, base, ozonolysis, thermolysis, radiolysis), or using heterogeneous activation (metals with zero oxidation state, metal oxides, quinones, activated carbon, semiconductors). As a result of oxidation, products of a lower mass than the parent compounds, less toxic, and more susceptible to biodegradation are formed. An important task is to investigate the effect of the peracid activation method and matrix composition on the efficiency of contamination removal. The article presents the latest information about the application of peracids in the removal of organic micropollutants of emerging concern (mainly focuses on endocrine disrupted compounds). The most important information on peracetic acid, peroxymonosulfate and persulfate salts, and methods of their activation are presented. Current uses of these oxidants in organic micropollutants removal are also described. Information was collected on the factors influencing the oxidation process and the effectiveness of pollutant removal. This paper compares PAA, PMS and PS-based processes for the first time in terms of kinetics and efficiency.
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Affiliation(s)
- Dariusz Kiejza
- Doctoral School of Exact and Natural Sciences, University of Bialystok, Ciołkowskiego 1K St., 15-245 Białystok, Poland
| | - Urszula Kotowska
- Department of Analytical and Inorganic Chemistry, Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K St., 15-245 Bialystok, Poland.
| | - Weronika Polińska
- Doctoral School of Exact and Natural Sciences, University of Bialystok, Ciołkowskiego 1K St., 15-245 Białystok, Poland
| | - Joanna Karpińska
- Department of Analytical and Inorganic Chemistry, Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K St., 15-245 Bialystok, Poland
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Singh G, Sushma, Priyanka, Suman, Diksha, Kaur JD, Saini A, Devi A, Satija P. Synthesis, characterization and UV–visible study of schiff base-acetylene functionalized organosilatrane receptor for the dual detection of Zn2+ and Co2+ ions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120465] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Hou J, He X, Zhang S, Yu J, Feng M, Li X. Recent advances in cobalt-activated sulfate radical-based advanced oxidation processes for water remediation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 770:145311. [PMID: 33736411 DOI: 10.1016/j.scitotenv.2021.145311] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Sulfate radical-based advanced oxidation processes (SR-AOPs) have attracted increasing attention for the degradation of organic contaminants in water. The oxidants of SR-AOPs could be activated to generate different kinds of reactive oxygen species (ROS, e.g., hydroxyl radicals (OH), sulfate radicals (SO4-), singlet oxygen (1O2), and superoxide radicals (O2-)) by various catalysts. As one of the promising catalysts, cobalt-based catalysts have been extensively investigated in catalytic activity and stability during water remediation. This article mainly summarizes recent advances in preparation and applications of cobalt-based catalysts on peroxydisulfate (PDS)/peroxymonosulfate (PMS) activation since 2016. The review covers the development of homogeneous cobalt ions, cobalt oxides, supported cobalt composites, and cobalt-based mixed metal oxides for PDS/PMS activation, especially for the latest nanocomposites such as cobalt-based metal-organic frameworks and single-atom catalysts. This article also discussed the activation mechanisms and the influencing factors of different cobalt-based catalysts for activating PDS/PMS. Finally, the future perspectives on the challenges and applications of cobalt-based catalysts are presented at the end of this paper.
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Affiliation(s)
- Jifei Hou
- School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Xiudan He
- School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Shengqi Zhang
- College of Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Jialin Yu
- School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Mingbao Feng
- College of Environment & Ecology, Xiamen University, Xiamen 361102, China.
| | - Xuede Li
- School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
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Guo Z, Bai G, Huang B, Cai N, Guo P, Chen L. Preparation and application of a novel biochar-supported red mud catalyst:Active sites and catalytic mechanism. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124802. [PMID: 33370698 DOI: 10.1016/j.jhazmat.2020.124802] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 12/02/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
A novel catalyst RM-BC(HP) was synthesized by hydrothermal treatment and pyrolysis (800 ℃) using red mud and coconut shells. Influence of different preparation conditions on catalyst performance was explored. SEM showed that RM-BC(HP) was porous and RM was successfully loaded on the outside surface and inside the pores of BC. XRD revealed that Fe2O3 in RM was reduced to Fe0 and Fe3O4 in the pyrolysis process, in which pyrolysis temperature and addition ratio of coconut shells were critical. TGA-MS, FT-IR and XPS were also applied to character the catalyst. 100% of AO7 was removed within 30 min with conditions of 2 mM PS, 50 mg/L AO7 and 0.5 g/L RM-BC(HP), and the Fe leaching was negligible. High removal rate was obtained in tap, river, and lake water. RM-BC(HP)/PS system also exhibited excellent degradation performance for other dyes (MB, MG and RhB) and antibiotics (TC, OTC and CTC). The mechanism studies demonstrated that PS was mainly activated by Fe0 and Fe2+ in RM-BC(HP) to produce different radicals, then 1O2 was generated by the reactions among these radicals to degrade AO7. Finally, nine intermediate products of AO7 were identified by FT-ICR-MS and a probable degradation pathway was proposed.
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Affiliation(s)
- Ziwei Guo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; Guangdong Provincial Engineering Research Center for Online Monitoring of Water Pollution, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, Guangzhou 510000, China
| | - Ge Bai
- Guangdong Provincial Engineering Research Center for Online Monitoring of Water Pollution, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, Guangzhou 510000, China; College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730000, China
| | - Bing Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Nan Cai
- Guangdong Provincial Engineering Research Center for Online Monitoring of Water Pollution, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, Guangzhou 510000, China
| | - Pengran Guo
- Guangdong Provincial Engineering Research Center for Online Monitoring of Water Pollution, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Sciences, Guangzhou 510000, China.
| | - Liang Chen
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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Lu Y, Shen Y, Zhang S, Li J, Fu Y, Huang A. Enhancement of Removal of VOCs and Odors from Wood by Microwave-Activated Persulfate. ACS OMEGA 2021; 6:5945-5952. [PMID: 33681632 PMCID: PMC7931435 DOI: 10.1021/acsomega.1c00126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Since traditional methods for removing volatile organic compounds (VOCs) from wood consume large amounts of energy and generate environmental pollution, it is desired to develop a convenient and green treatment method. Oxidation by microwave-activated persulfate (MW-PS) is a promising alternative method that has been used to eliminate VOCs from wood. The penetration of microwave energy can destroy the wood pit membranes and increase VOC emissions. The VOCs are further degraded by ·OH and SO4 •-, which are generated via the activation of microwaves. This phenomenon can be detected by the electron paramagnetic resonance spectrometry. The 35 types of main VOCs of natural wood were determined, including alkanes/terpenes, alcohols/ethers, esters, aldehydes/ketones, and others. In the MW-PS system, 23 compounds were removed with an efficiency of 100%. Specifically, as one of the major compounds, the content of alkanes/terpenes was sharply decreased, and no alcohols/ethers and esters were detected. It was found that the optimal conditions of the MW-PS system for the minimum release of VOCs from wood were the microwave power of 462 W, irradiation time of 30 min, and PS dosage of 0.5 mmol/L.
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Affiliation(s)
- Yutong Lu
- MOE
Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China
- Beijing
Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yulin Shen
- MOE
Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China
- Beijing
Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Shifeng Zhang
- MOE
Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China
- Beijing
Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Jianzhang Li
- MOE
Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China
- Beijing
Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yuejin Fu
- Research
Institute of Wood Industry, Chinese Academy
of Forestry, Beijing 100091, P. R. China
| | - Anmin Huang
- Research
Institute of Wood Industry, Chinese Academy
of Forestry, Beijing 100091, P. R. China
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