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Wan J, Guo Y, Zhang Z, Deng R, Wang X, Cao S, Zhang X, Miao Y, Jiang J, Song Z, Long T, Sun C, Zhu X. Persulfate activation with biochar supported nanoscale zero- valent iron: Engineering application for effective degradation of NCB in soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173053. [PMID: 38723973 DOI: 10.1016/j.scitotenv.2024.173053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/20/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
Nitrochlorobenzene (NCB) is very common in pesticide and chemical industries, which has become a major problem in soil environment. However, the remediation of NCB contaminated soil is received finite concern. Using biochar as a substrate for nanoscale-zero valent iron (nZVI/p-BC) to activate peroxodisulfate (PDS), a novel heterogeneous oxidative system had been applied in the current study to remediate NCB contaminants in soil. The degradation efficiencies and kinetics of m-NCB, p-NCB, and o-NCB by various systems were contrasted in soil slurry. Key factors including the dosage of nZVI/p-BC, the molar ratio of nZVI/PDS, initial pH and temperature on degradation of NCB were further examined. The results confirmed that the nZVI/p-BC/PDS displayed the remarkable performance for removing NCB compared with other systems. Higher temperature with nZVI/PDS molar ratio of 2:1 under the acidic condition favored the reduction of NCB. The treatment for NCB with optimal conditions were evaluated for the engineering application. The mechanism of nZVI/p-BC/PDS indicated that electron transfer between p-BC and nZVI was responsible for activation of PDS, generating active species (SO4•-, •OH and 1O2) via both the free and non-free radical pathways. Experimental results revealed prominent availability of nZVI/p-BC/PDS system in remediation of actual contaminated field by NCB.
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Affiliation(s)
- Jinzhong Wan
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Yang Guo
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
| | - Zehang Zhang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Rufeng Deng
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Xiang Wang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Shaohua Cao
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Xiaodong Zhang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Yifei Miao
- College of Environment, Hohai University, Nanjing 210098, China
| | - Jinlin Jiang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Zhen Song
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Tao Long
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Cheng Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Xin Zhu
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
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Brillas E, Oliver R. Development of persulfate-based advanced oxidation processes to remove synthetic azo dyes from aqueous matrices. CHEMOSPHERE 2024; 355:141766. [PMID: 38527631 DOI: 10.1016/j.chemosphere.2024.141766] [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: 01/30/2024] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 03/27/2024]
Abstract
Azo dyes are largely used in many industries and discharged in large volumes of their effluents into the aquatic environment giving rise to non-esthetic pollution and health-risk problems. Due to the high stability of azo dyes in ambient conditions, they cannot be abated in conventional wastewater treatment plants. Over the last fifteen years, the decontamination of dyeing effluents by persulfate (PS)-based advanced oxidation processes (AOPs) has received a great attention. In these methods, PS is activated to be decomposed into sulfate radical anion (SO4•-), which is further partially hydrolyzed to hydroxyl radical (•OH). Superoxide ion (O2•-) and singlet oxygen (1O2) can also be produced as oxidants. This review summarizes the results reported for the discoloration and mineralization of synthetic and real waters contaminated with azo dyes covering up to November 2023. PS activation with iron, non-iron transition metals, and carbonaceous materials catalysts, heat, UVC light, photocatalysis, photodegradation with iron, electrochemical and related processes, microwaves, ozonation, ultrasounds, and other processes is detailed and analyzed. The principles and characteristics of each method are explained with special attention to the operating variables, the different oxidizing species generated yielding radical and non-radical mechanisms, the addition of inorganic anions and natural organic matter, the aqueous matrix, and the by-products identified. Finally, the overall loss of toxicity or partial detoxification of treated azo dye solutions during the PS-based AOPs is discussed.
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Affiliation(s)
- Enric Brillas
- Departament de Ciència de Materials i Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcclona, Spain.
| | - Ramon Oliver
- Departament d'Enginyeria Químia, Universitat Politècnica de Catalunya, Avinguda Eduard Maristany16, edifici I, segona planta, Barcelona, Spain.
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3
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Yang Z, Yang S, Shiqiao Y, Yuanhong D. Enhanced Rhodamine B degradation by GAC/Mn-Sn particles electrodes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:1552-1570. [PMID: 37001165 DOI: 10.2166/wst.2023.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Rhodamine B (RhB) wastewater could be degraded by a three-dimensional electrolytic reactor with surface-modified titanium anodes, and a variety of materials had been tried to prepare for particles electrodes to enhance its removal effects, among them, granular activated carbon (GAC) with large specific surface areas and stable chemical properties was selected as particles materials and coated by manganese oxidation (Mn) as the main active ingredient. The experimental results showed that 98.3% of RhB and 60.7% of chemical oxygen demand were removed respectively, and the RhB wastewater's biodegradability was improved either. On the superficial sites of GAC/Mn-Sn particles, hydroxyl radicals were generated, and some absorbed RhB molecular was initially decolored by hypochlorite removing the two ethyl groups on both sides of the molecular, then oxidized by hydroxyl, and continually decomposed by these strong oxidants into a variety of intermediates.
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Affiliation(s)
- Zhang Yang
- School of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China E-mail:
| | - Song Yang
- School of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China E-mail:
| | - Yang Shiqiao
- School of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China E-mail:
| | - Ding Yuanhong
- School of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China E-mail:
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Gholami A, Mousavinia F. Eco-friendly approach for efficient catalytic degradation of organic dyes through peroxymonosulfate activated with pistachio shell-derived biochar and activated carbon. ENVIRONMENTAL TECHNOLOGY 2022; 43:3444-3461. [PMID: 33900896 DOI: 10.1080/09593330.2021.1922510] [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: 01/17/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
This study introduces a simple method for the preparation of biochar (BCP) and activated carbon using pistachio (ACP) external hull as residual solid waste. Low-cost raw materials, biodegradable, recyclable and organic solid wastes are advantages of this method. Furthermore, complete degradation of methyl orange (MO) and methylene blue (MB) to H2O and CO2 as eco-friendly compounds in mild reaction condition occurs at a short time. Also, the effects of crucial parameters (temperature, time, catalyst dosage, initial dye and oxidant concentration, initial reaction pH level and radical scavengers), capability, adaptability, performance and reusability of ACP were also evaluated. The results displayed that dyes could be decomposed effectively by the PMS/ACP-800 system. Furthermore, the sulphate radical (SO4∙-) was a major active role in the degradation process, while hydroxyl radical (•OH) played a minor role. Overall, ACP had yielded high degradation of MB and MO dyes; therefore, ACP-800 could be effectively and reliably applied in the treatment of industry effluents containing MB and MO dyes.
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Affiliation(s)
- Ali Gholami
- Faculty of Chemistry, Department of Analytical Chemistry, University of Kashan, Kasha, Iran
| | - Fakhreddin Mousavinia
- Faculty of Chemistry, Department of Analytical Chemistry, University of Kashan, Kasha, Iran
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Jiang B, Liu F, Pan Y, Tan Y, Shuang C, Li A. Preparation of Graphite-UiO-66(Zr)/Ti electrode for efficient electrochemical oxidation of tetracycline in water. PLoS One 2022; 17:e0271075. [PMID: 35944028 PMCID: PMC9362921 DOI: 10.1371/journal.pone.0271075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/23/2022] [Indexed: 11/19/2022] Open
Abstract
Tetracycline (TC) is widely-used antibiotic pollutant with high toxicity, refractory, persistence and bacteriostasis, and its removal from water needs to be enhanced. In this work, a novel Graphite-UiO-66(Zr)/Ti electrode was successfully prepared and evaluated for electrochemical oxidation degradation of TC. The electrochemical performance tests indicate the Graphite-UiO-66(Zr)/Ti electrode had higher electrochemical oxidation activity, which achieved higher TC removal efficiency (98.1% ± 1.5%) than Ti plate (65.2% ± 3.5%), Graphite-MIL-53(Al)/Ti electrode (79.5% ± 2.9%) and Graphite-MIL-100(Fe)/Ti electrode (89.0% ± 2.6%). The influence of operating condition was also systematically studied, and the optimized condition was pH 5.0, 20 mA/cm2 current density and 0.1 M electrolyte (Na2SO4). Through the liquid chromatography mass spectrometry (LC-MS), the TC degradation pathway by Graphite-UiO-66(Zr)/Ti electrode oxidation was proposed. Under the •OH free radical oxidative decomposition effect, the double bond, phenolic group and amine group of TC were attacked. TC was transformed into intermediate product ① (m/z = 447), then was further degraded to intermediates ② (m/z = 401) and ③ (m/z = 417). The latter was fragmented into small fractions ④ (m/z = 194), ⑤but-2-enedioic acid (m/z = 116) and ⑥oxalic acid (m/z = 90, the proposed intermediate). In addition, TC removal remained at 89.6% ± 2.7% in the sixth cycle of operation, which confirmed the efficient reusability and stability for antibiotics removal from water.
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Affiliation(s)
- Bicun Jiang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China
- Nanjing Innovation Center for Environmental Protection Industry Co., Ltd., Nanjing, PR China
| | - Fuqiang Liu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China
- Nanjing Innovation Center for Environmental Protection Industry Co., Ltd., Nanjing, PR China
| | - Yang Pan
- Nanjing Innovation Center for Environmental Protection Industry Co., Ltd., Nanjing, PR China
| | - Yan Tan
- Nanjing Innovation Center for Environmental Protection Industry Co., Ltd., Nanjing, PR China
| | - Chendong Shuang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China
- * E-mail:
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, PR China
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6
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Wang B, Wang Y. A comprehensive review on persulfate activation treatment of wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154906. [PMID: 35364155 DOI: 10.1016/j.scitotenv.2022.154906] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
With increasingly serious environmental pollution and the production of various wastewater, water pollutants have posed a serious threat to human health and the ecological environment. The advanced oxidation process (AOP), represented by the persulfate (PS) oxidation process, has attracted increasing attention because of its economic, practical, safety and stability characteristics, opening up new ideas in the fields of wastewater treatment and environmental protection. However, PS does not easily react with organic pollutants and usually needs to be activated to produce oxidizing active substances such as sulfate radicals (SO4-) and hydroxyl radicals (OH) to degrade them. This paper summarizes the research progress of PS activation methods in the field of wastewater treatment, such as physical activation (e.g., thermal, ultrasonic, hydrodynamic cavitation, electromagnetic radiation activation and discharge plasma), chemical activation (e.g., alkaline, electrochemistry and catalyst) and the combination of the different methods, putting forward the advantages, disadvantages and influencing factors of various activation methods, discussing the possible activation mechanisms, and pointing out future development directions.
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Affiliation(s)
- Baowei Wang
- School of Chemical Engineering and Technology, Tianjin University, China.
| | - Yu Wang
- School of Chemical Engineering and Technology, Tianjin University, China
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7
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Natarajan P, Priya, Chuskit D. Persulfate-nitrogen doped graphene mixture as an oxidant for the synthesis of 3-nitro-4-aryl-2 H-chromen-2-ones from aryl alkynoate esters and nitrite. Org Biomol Chem 2022; 20:4616-4624. [PMID: 35608321 DOI: 10.1039/d2ob00827k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 3-nitro-4-aryl-2H-chromen-2-ones in good yields have directly been obtained from aryl alkynoate esters and nitrite by employing a mixture of K2S2O8-nitrogen doped graphene as an oxidant in a watery medium at room temperature. A plausible mechanism for the reaction is also reported. It reveals that the product is formed through a cascade of nitro radical addition, spirocyclization, and ester migration. When compared to known methods for the synthesis of 3-nitro-4-aryl-2H-chromen-2-ones from aryl alkynoate esters, this protocol is environmentally friendly, sustainable, practical and energy efficient and does not use a harmful nitro source. Furthermore, nitrogen doped graphene used in this approach can be easily recovered and reused at least four times without losing its activity.
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Affiliation(s)
- Palani Natarajan
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh - 160 014, India.
| | - Priya
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh - 160 014, India.
| | - Deachen Chuskit
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh - 160 014, India.
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Ge L, Shao B, Liang Q, Huang D, Liu Z, He Q, Wu T, Luo S, Pan Y, Zhao C, Huang J, Hu Y. Layered double hydroxide based materials applied in persulfate based advanced oxidation processes: Property, mechanism, application and perspectives. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127612. [PMID: 34838358 DOI: 10.1016/j.jhazmat.2021.127612] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/06/2021] [Accepted: 10/24/2021] [Indexed: 05/24/2023]
Abstract
Recently, persulfate-based advanced oxidation processes (persulfate-AOPs) are booming rapidly due to their promising potential in treating refractory contaminants. As a type of popular two-dimensional material, layered double hydroxides (LDHs) are widely used in energy conversion, medicine, environment remediation and other fields for the advantages of high specific surface area (SSA), good tunability, biocompatibility and facile fabrication. These excellent physicochemical characteristics may enable LDH-based materials to be promising catalysts in persulfate-AOPs. In this work, we make a summary of LDHs and their composites in persulfate-AOPs from different aspects. Firstly, we introduce different structure and important properties of LDH-based materials briefly. Secondly, various LDH-based materials are classified according to the type of foreign materials (metal or carbonaceous materials, mainly). Latterly, we discuss the mechanisms of persulfate activation (including radical pathway and nonradical pathway) by these catalysts in detail, which involve (i) bimetallic synergism for radical generation, (ii) the role of carbonaceous materials in radical generation, (iii) singlet oxygen (1O2) production and several special nonradical mechanisms. In addition, the catalytic performance of LDH-based catalysts for contaminants are also summarized. Finally, challenges and future prospects of LDH-based composites in environmental remediation are proposed. We expect this review could bring new insights for the development of LDH-based catalyst and exploration of reaction mechanism.
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Affiliation(s)
- Lin Ge
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Binbin Shao
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Qinghua Liang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Danlian Huang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Zhifeng Liu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China.
| | - Qingyun He
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Ting Wu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Songhao Luo
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Yuan Pan
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Chenhui Zhao
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
| | - Yumeng Hu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, P.R. China
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John D, Jose J, Bhat SG, Achari VS. Integration of heterogeneous photocatalysis and persulfate based oxidation using TiO 2-reduced graphene oxide for water decontamination and disinfection. Heliyon 2021; 7:e07451. [PMID: 34286128 PMCID: PMC8273424 DOI: 10.1016/j.heliyon.2021.e07451] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 03/15/2021] [Accepted: 06/28/2021] [Indexed: 10/29/2022] Open
Abstract
Advanced oxidation processes (AOPs) which involve the generation of highly reactive free radicals have been considered as a promising technology for the decontamination of water from chemical and bacterial pollutants. In this study, integration of two major AOPs viz., heterogeneous photocatalysis involving TiO2-reduced graphene oxide (T-RGO) nanocomposite and activated persulfate (PS) based oxidation was attempted to remove diclofenac (DCF), a frequently detected pharmaceutical contaminant in water. The enhanced visible light responsiveness of T-RGO would facilitate the use of direct sunlight as a benign and cost effective source of energy for the photocatalytic activation. By combining PS based oxidation process with T-RGO mediated photocatalysis, a DCF removal efficiency of more than 98% was achieved within 30 min. The effect of operating parameters like PS concentration and pH on DCF removal was assessed. Radical scavenging experiments indicated that apart from radical oxidation involving •OH andSO 4 · - radicals, a non-radical oxidation pathway was also taking place in the degradation. The antibacterial properties of the integrated system were also evaluated using Escherichia coli and Staphylococcus aureus as representative bacteria. The presence of PS in the photocatalytic reaction system improved the antibacterial activity of the composite against the two strains studied. Cytotoxicity of T-RGO nanocomposite was assessed using human macrophage cell lines and the results showed that the composite is biocompatible and nontoxic at the recommended dosage for water treatment in the present study.
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Affiliation(s)
- Deepthi John
- School of Environmental Studies, Cochin University of Science and Technology, Kochi, 682022, Kerala, India
- Department of Chemistry, Deva Matha College, Kuravilangad, 686633, Kerala, India
| | - Jiya Jose
- Department of Biotechnology, Cochin University of Science and Technology, Kochi, 682022, Kerala, India
| | - Sarita G. Bhat
- Department of Biotechnology, Cochin University of Science and Technology, Kochi, 682022, Kerala, India
| | - V. Sivanandan Achari
- School of Environmental Studies, Cochin University of Science and Technology, Kochi, 682022, Kerala, India
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Natarajan P, Priya, Chuskit D. Persulfate-activated charcoal mixture: an efficient oxidant for the synthesis of sulfonated benzo[ d][1,3]oxazines from N-(2-vinylphenyl)amides and thiols in aqueous solution. RSC Adv 2021; 11:15573-15580. [PMID: 35481158 PMCID: PMC9029395 DOI: 10.1039/d1ra02377b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 04/20/2021] [Indexed: 11/21/2022] Open
Abstract
A series of 2,4-aryl-4-((arylsulfonyl)methyl)-4H-benzo[d][1,3]oxazines in good to excellent yields have directly been obtained from N-(2-vinylphenyl)amides and thiols by employing a mixture of K2S2O8-activated charcoal in aqueous acetonitrile solution at 50 °C. A plausible mechanism for the reaction is reported. It reveals that the reaction follows a radical pathway and the persulfate has been the oxygen source for formation of the sulfone group in the products. It is worth mentioning that this protocol utilizes an easily accessible K2S2O8-activated charcoal mixture and thiols, respectively, as an oxidant and sulfonylating precursors for the first time.
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Affiliation(s)
- Palani Natarajan
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh - 160014 India
| | - Priya
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh - 160014 India
| | - Deachen Chuskit
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh - 160014 India
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11
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Activation of peroxymonosulfate by Co3Sn2 with Co(II)-enriched amorphous layer for efficient removal of RhB pollutant. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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12
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Li Y, Lin Q, Li C, Weiguo Z, Xu L, Zhang K. The defluorination of perfluorooctanoic acid by different vacuum ultraviolet systems in the solution. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:455-463. [PMID: 32866295 DOI: 10.1002/wer.1448] [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: 05/28/2020] [Revised: 08/02/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
Perfluorooctanoic acid (PFOA) is one kind of persistent organic pollutants that is often detected in water. In recent years, the effective degradation technologies of PFOA have attracted widespread attentions. Thus, in this study, the defluorination efficiency of PFOA in different systems (i.e., ultraviolet (UV), vacuum ultraviolet (VUV), vacuum ultraviolet/persulfate (VUV/PS) and vacuum ultraviolet/residual chlorine (VUV/RC)) was evaluated. Moreover, the different impact factors (i.e., the initial concentrations of persulfate and PFOA, temperature, anions, and initial pH values) on PFOA degradation by VUV/PS system were investigated. The results showed that VUV system was more effective than UV system for PFOA defluorination. VUV system combined with persulfate would further enhance the defluorination efficiency while residual chlorine would decrease it. In VUV/PS system, the defluorination efficiency of PFOA was the best as the molar ratio of PFOA and persulfate at 1:60. Moreover, higher temperature, lower initial PFOA concentration, and acid condition were favorable for the defluorination of PFOA. Under the different influence factors, the defluorination efficiency of PFOA fitted well to the first-order reaction kinetic model. When the temperature was range from 20°C to 40°C, the value of activation energy was 8.73 kJ/mol. Besides, the inhibition effect of three kinds of anions on PFOA defluorination followed the order: NO 3 - > Cl- > CO 3 2 - . PRACTITIONER POINTS: The defluorination efficiency of perfluorooctanoic acid (PFOA) in water by different VUV systems was compared. VUV system is more effective than UV system for PFOA defluorination. Persulfate will enhance the defluorination efficiency by VUV system. Hypochlorite will decrease the defluorination efficiency by VUV system.
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Affiliation(s)
- Yuanhao Li
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
| | - Qiufeng Lin
- Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ, USA
| | - Cong Li
- College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China
| | - Zijian Weiguo
- College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China
| | - Luo Xu
- College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China
| | - Kejia Zhang
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
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Zhang Y, Qu J, Ding F, Kong Y, Su X, Xu X. Facile synthesis of layered Co(OH) 2 deposited g-C 3N 4 for activating peroxymonosulfate to degrade organic pollutants. NEW J CHEM 2021. [DOI: 10.1039/d1nj02445k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Layered Co(OH)2 deposited g-C3N4 is found to be highly active in the activation of peroxymonosulfate (PMS) for pollutant removal.
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Affiliation(s)
- Yingxue Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, 271018 Taian, Shandong, People's Republic of China
| | - Jianyu Qu
- College of Chemistry and Material Science, Shandong Agricultural University, 271018 Taian, Shandong, People's Republic of China
| | - Fangjun Ding
- Shandong Agricultural University Fertilizer Sci & Tec Co., Ltd, 271600 Taian, Shandong, People's Republic of China
| | - Yujiao Kong
- College of Chemistry and Material Science, Shandong Agricultural University, 271018 Taian, Shandong, People's Republic of China
| | - Xiurong Su
- College of Chemistry and Material Science, Shandong Agricultural University, 271018 Taian, Shandong, People's Republic of China
| | - Xingliang Xu
- College of Chemistry and Material Science, Shandong Agricultural University, 271018 Taian, Shandong, People's Republic of China
- Foshan (Southern China) Institute for New Materials, Foshan 528200, Guangdong, China
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14
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Ding J, Xu W, Liu S, Liu Y, Tan X, Li X, Li Z, Zhang P, Du L, Li M. Activation of persulfate by nanoscale zero-valent iron loaded porous graphitized biochar for the removal of 17β-estradiol: Synthesis, performance and mechanism. J Colloid Interface Sci 2020; 588:776-786. [PMID: 33309141 DOI: 10.1016/j.jcis.2020.11.111] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 02/08/2023]
Abstract
In this work, the porosity, graphitization and iron doping of biochar were realized simultaneously by the pyrolysis of biomass and potassium ferrate (K2FeO4), then the iron-doped graphitized biochar was reduced to synthesize nanoscale zero-valent iron loaded porous graphitized biochar (nZVI/PGBC). 17β-estradiol (E2) is an environmental endocrine disruptor that can cause great harm to the environment in small doses. Experiments illustrated that nZVI/PGBC (100 mg/L) could completely remove E2 (3 mg/L) within 45 min by activating sodium persulfate (PS, 400 mg/L). The E2 removal efficiency of nZVI/PGBC was obviously superior to that of pristine biochar (BC), iron-doped graphitized biochar (Fe/GBC), nanoscale zero-valent iron (nZVI) and porous graphitized biochar (PGBC). The removal efficiency could be affected by reaction conditions, including reaction temperature, acidity, dosage of catalyst and oxidant and water matrix. Quenching experiments and electron spin resonance (ESR) demonstrated that SO4-· and HO were both responsible for E2 degradation. This study indicated that Fe0 and Fe2+ were the main catalytic active substances, while the catalytic ability of PGBC was not obvious. The reaction mechanism was proposed, that is, PS was activated by electrons provided by the redox reaction between Fe2+ and Fe3+, and PGBC acted as the carrier of nZVI, the adsorbent of E2 and the mediator of electron-transfer. This study demonstrates that nZVI/PGBC can be used as an effective activator for PS to remove organic pollutants in water.
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Affiliation(s)
- Jinglin Ding
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Weihua Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
| | - Shaobo Liu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; School of Architecture and Art, Central South University, Changsha, 410083, China.
| | - Yunguo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Xiaofei Tan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Xin Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Zhongwu Li
- College of Resources and Environmental Sciences, Hunan Normal University, Changsha 410081, China
| | - Peng Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Li Du
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Meifang Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
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15
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Li X, Jia Y, Zhou M, Su X, Sun J. High-efficiency degradation of organic pollutants with Fe, N co-doped biochar catalysts via persulfate activation. JOURNAL OF HAZARDOUS MATERIALS 2020; 397:122764. [PMID: 32388092 DOI: 10.1016/j.jhazmat.2020.122764] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/20/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
In this study, the Fe, N co-doped biochar (Fe-N-BC) was prepared by pyrolyzing wheat straw, urea and iron salts and used to activate persulfate (peroxydisulfate, PS) for organic contaminant degradation. Iron oxide doping not only introduced magnetism into the biochar for easy separation, but also influenced its catalytic ability for PS activation. In the Fe-N-BC/PS system, almost all acid orange (AO7) was removed within 90 min with an apparent rate constant (kobs) of 0.114 min-1, which was almost 37 times larger than that of pure N-BC (0.003 min-1). Factors influencing the removal of AO7 were investigated, including PS concentration, catalyst dosage, and initial pH. The Fe-N-BC/PS system had high removal efficiencies for various organic contaminants and showed high resistance to inorganic anions in aquatic environments. The radical quenching studies, electron paramagnetic resonance (EPR) measurements, and electrochemical analyses verified that the mechanism of AO7 degradation in the Fe-N-BC/PS system included both radical and non-radical pathways involving the generation of OH, SO4-, O2-, 1O2, and electron transfer. Additionally, persistent free radicals (PFRs) on the catalysts also related to their catalytic efficiencies. These results demonstrated that the Fe-N-BC/PS system had the potential for wastewater treatment applications.
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Affiliation(s)
- Xiang Li
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China.
| | - Yan Jia
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Xianfa Su
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Jianhui Sun
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
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16
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Reza Samarghandi M, Tari K, Shabanloo A, Salari M, Zolghadr Nasab H. Synergistic degradation of acid blue 113 dye in a thermally activated persulfate (TAP)/ZnO-GAC oxidation system: Degradation pathway and application for real textile wastewater. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116931] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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17
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Ye J, Li C, Yan Y. Core-shell ZIF-67/ZIF-8-derived sea urchin-like cobalt/nitrogen Co-doped carbon nanotube hollow frameworks for ultrahigh adsorption and catalytic activities. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Ma Q, Nengzi LC, Li B, Wang Z, Liu L, Cheng X. Heterogeneously catalyzed persulfate with activated carbon coated with CoFe layered double hydroxide (AC@CoFe-LDH) for the degradation of lomefloxacin. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116204] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Enhanced activation of persulfate by AC@CoFe2O4 nanocomposites for effective removal of lomefloxacin. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115978] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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20
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Liu F, Xu Y, Zhang B, Liu Y, Zhang H. Heterogeneous degradation of organic contaminant by peroxydisulfate catalyzed by activated carbon cloth. CHEMOSPHERE 2020; 238:124611. [PMID: 31524605 DOI: 10.1016/j.chemosphere.2019.124611] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 07/26/2019] [Accepted: 08/17/2019] [Indexed: 06/10/2023]
Abstract
An eco-friendly material, activated carbon cloth (ACC) was used as the heterogeneous catalyst in activation of peroxydisulfate (PDS) for the efficient degradation of organic pollutant in water. Besides, the effects of several parameters in the ACC/PDS process including initial pH, PDS concentration, reaction temperature, stirring speed and co-existing anions were investigated. Under optimum conditions, almost complete removal (98.6%) of AO7 in 60 min and 67.4% of total organic carbon (TOC) removal within 180 min were obtained, accompanied by the remarkable destruction of azo band and naphthalene ring on AO7. The electron paramagnetic resonance and radical quenching experiments were carried out to identify the reactive radicals in the ACC/PDS process. Surface characteristic techniques such as XRD, BET, SEM, FTIR, XPS were applied to analysis the change of crystal structure, surface area, surface morphology, functional groups on the surface of fresh and spent ACC samples. Hydroxyl groups (C‒OH) and π-π transitions significantly affected the catalytic activity of ACC. The intermediate products of AO7 oxidation were identified by LC-MS and the corresponding degradation pathway was proposed.
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Affiliation(s)
- Fuzhen Liu
- Department of Environmental Science and Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan, 430079, China
| | - Yin Xu
- Department of Environmental Science and Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan, 430079, China
| | - Baisong Zhang
- Department of Environmental Science and Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan, 430079, China
| | - Yalu Liu
- Department of Environmental Science and Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan, 430079, China
| | - Hui Zhang
- Department of Environmental Science and Engineering, Hubei Environmental Remediation Material Engineering Technology Research Center, Wuhan University, Wuhan, 430079, China.
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21
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Abstract
This paper aims at demonstrating the significance of biochar risk evaluation and reviewing risk evaluation from the aspects of pyrolysis process, feedstock, and sources of hazards in biochar and their potential effects and the methods used in risk evaluation. Feedstock properties and the resultant biochar produced at different pyrolysis process influence their chemical, physical, and structural properties, which are vital in understanding the functionality of biochar. Biochar use has been linked to some risks in soil application such as biochar being toxic, facilitating GHGs emission, suppression of the effectiveness of pesticides, and effects on soil microbes. These potential risks originate from feedstock, contaminated feedstock, and pyrolysis conditions that favor the creation of characteristics and functional groups of this nature. These toxic compounds formed pose a threat to human health through the food chain. Determination of toxicity levels is a first step in the risk management of toxic biochar. Various sorption methods of biochar utilized low-cost adsorbents, engineered surface functional groups, and nZVI modified biochars. The mechanisms of organic compound removal was through sorption, enhanced sorption, modified biochar, postpyrolysis thermal air oxidation and that of PFRs degradation was through activation, photoactive functional groups, magnetization, and hydrothermal synthesis. Emissions of GHGs in soils amended with biochar emanated through physical and biotic mediated mechanisms. BCNs have a significance in reducing the health quotient indices for PTEs risk contamination by suppressing cancer risk arising from consumption of contaminated food. The degree of environmental risk assessment of HM pollution in biomass and biochars has been determined by using potential ecological risk index and RAC while organic contaminant degradation by EPFRs was considered when assessing the environmental roles of biochar in regulating the fate of contaminants removal. The magnitude of technologies’ net benefit must be considered in relation to the associated risks.
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22
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Ahn YY, Yun E. Heterogeneous metals and metal-free carbon materials for oxidative degradation through persulfate activation: A review of heterogeneous catalytic activation of persulfate related to oxidation mechanism. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0398-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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23
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He J, Xiao Y, Tang J, Chen H, Sun H. Persulfate activation with sawdust biochar in aqueous solution by enhanced electron donor-transfer effect. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 690:768-777. [PMID: 31302542 DOI: 10.1016/j.scitotenv.2019.07.043] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/20/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
In addition to its strong adsorption capacity, the biochar-induced catalytic degradation of contaminants has attracted considerable attention recently. However, the mechanism and influential factors are poorly understood. This study investigated the persulfate (PS) activation performance of sawdust biochar (SBC) pyrolyzed at different temperatures (SBC-300 to SBC-700, respectively.) in acid orange 7 (AO7) degradation and found the main activation mechanism of it. The results demonstrated the degradation efficiency of PS/SBC system increased with the increasing SBC pyrolysis temperature. Moreover, the degradation rates of AO7 in the system could be even increased from 7% (SBC-300) to over 90% (SBC-700) under the optimum dosage of PS (9 mmol/L) and SBC (1.5 g/L). The reaction mainly took place in the pore and near the surface of SBC which was defined as graphite electron donor-transfer complex in this study, and graphite holes played a decisive role in the reaction. Besides, SO4- and OH were the active radicals participating in the reaction. It was found that comparing with the oxygen function groups and persistent free radicals (PFRs) of SBC, the electrical conductivity and electron donor ability were playing the main roles in enhancing PS activation with biochar pyrolyzed at high temperature for AO7 degradation.
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Affiliation(s)
- Juan He
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yao Xiao
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Jingchun Tang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
| | - Hongkun Chen
- State Key Lab of Petroleum Pollution Control, CNPC Research Institute of Safety & Environmental Technology, Beijing 102206, China
| | - Hongwen Sun
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
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24
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Pang Y, Luo K, Tang L, Li X, Yu J, Guo J, Liu Y, Zhang Z, Yue R, Li L. Carbon-based magnetic nanocomposite as catalyst for persulfate activation: a critical review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:32764-32776. [PMID: 31512124 DOI: 10.1007/s11356-019-06403-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
The activation of persulfate to produce active radicals has been attracting wide attention in environmental remediation fields. Among various catalysts, non-metal carbocatalysts and carbon-based composites have shown attractive prospects given that they are environmental-friendly, highly efficient, abundant, and diverse. In this paper, the use of carbon-based magnetic nanocomposites as catalysts for persulfate activation was reviewed and discussed. The preparation methods of carbon-based magnetic nanocomposites were first briefly summarized. Subsequently, the use of activated carbon, carbon nanotubes, graphene oxide, biochar, and nanodiamond-based magnetic composites to activate persulfate was discussed, respectively. A synergetic effect between carbon materials and magnetic nanoparticles facilitated the activation process because of the increased electron transfer capacity, good dispersity of magnetic nanoparticles, and good repeatability and separability. Both radical and non-radical pathways were detected in the activation processes, but the specific mechanisms were greatly influenced by the components of the catalyst and solution conditions. And fundamental studies were needed to clarify the inner mechanisms of the process. In the end, strategies for enhancing the catalytic performances of carbon-based magnetic nanocomposites were suggested. It is expected that this review will provide some inspirations for developing highly efficient and green catalyst, as well as sulfate radical-based advanced oxidation technology for the remediation water environment.
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Affiliation(s)
- Ya Pang
- Department of Biology and Environmental Engineering, Changsha University, Changsha, People's Republic of China
| | - Kun Luo
- Department of Biology and Environmental Engineering, Changsha University, Changsha, People's Republic of China.
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China.
| | - Xue Li
- Department of Biology and Environmental Engineering, Changsha University, Changsha, People's Republic of China
| | - Jiangfang Yu
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
| | - Junyuan Guo
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu, People's Republic of China
| | - Yuanyuan Liu
- School of Architecture, Changsha University of Science & Technology, Changsha, People's Republic of China
| | - Zhu Zhang
- Department of Biology and Environmental Engineering, Changsha University, Changsha, People's Republic of China
| | - Ran Yue
- Department of Biology and Environmental Engineering, Changsha University, Changsha, People's Republic of China
| | - Ling Li
- Department of Biology and Environmental Engineering, Changsha University, Changsha, People's Republic of China
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25
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Acceleration of Persulfate Activation by MIL-101(Fe) with Vacuum Thermal Activation: Effect of FeII/FeIII Mixed-Valence Center. Catalysts 2019. [DOI: 10.3390/catal9110906] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In this work, the activation effect of vacuum thermal treatment on MIL-101(Fe) (MIL: Materials of Institute Lavoisier) was investigated for the first time. It demonstrated that vacuum thermal activation could accelerate the activation of persulfate (PS) by MIL-101(Fe), and the enhancement of the catalytic capacity of MIL-101(Fe) was mainly attributed to the change in the FeII/FeIII mixed-valence center. The results of the SEM and XRD showed that vacuum thermal activation had a negligible effect on the crystal structure and particle morphology of MIL-101(Fe). Meanwhile, the higher temperature of vacuum thermal activation caused a higher relative content ratio of FeII/FeIII. A widely used azo dye, X-3B, was chosen as the probe molecule to investigate the catalytic performance of all samples. The results showed that the activated samples could remove X-3B more effectively, and the sample activated at 150 °C without regeneration could effectively activate PS to remove X-3B for at least 5 runs and approximately 900 min. This work highlights the often-overlooked activation effect of vacuum thermal treatment and provides a simple way to improve the catalytic capacity and reusability of MIL-101(Fe) which is beneficial for the application of MIL-101(Fe)/PS systems in azo dye wastewater treatment.
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26
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Han S, Hassan SU, Zhu Y, Zhang S, Liu H, Zhang S, Li J, Wang Z, Zhao C. Significance of Activated Carbon Fiber as Cathode in Electro/Fe3+/Peroxydisulfate Oxidation Process for Removing Carbamazepine in Aqueous Environment. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02915] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shiqiang Han
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, P. R. China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, P. R. China
| | - Shabi Ul Hassan
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, P. R. China
| | - Yunhua Zhu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, P. R. China
| | - Shuai Zhang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, P. R. China
| | - Hongguang Liu
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, P. R. China
- Xinjiang Production & Construction Group, Key Laboratory of Modern Water-Saving Irrigation, Shihezi 832000, P. R. China
| | - Sen Zhang
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, P. R. China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, P. R. China
| | - Junfeng Li
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, P. R. China
| | - Zhaoyang Wang
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, P. R. China
| | - Chun Zhao
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, P. R. China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
- Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, P. R. China
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27
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Sun P, Zhang K, Gong J, Khan A, Zhang Y, Islama MS, Zhang Y. Sunflower stalk-derived biochar enhanced thermal activation of persulfate for high efficient oxidation of p-nitrophenol. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:27482-27493. [PMID: 31332683 DOI: 10.1007/s11356-019-05881-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
Sunflower stalk-derived biochars (BC) were prepared at various temperatures (i.e., 500, 650, and 1000 °C) and demonstrated as a highly efficient catalyst in persulfate (PS) activation for the oxidation of p-nitrophenol (PNP) at 60 °C. The apparent PNP oxidation rate constant in the BC500 (0.1543 L mol-1 S-1), BC650 (0.6062 L mol-1 S-1), or BC1000 (2.1379 L mol-1 S-1) containing PS system was about 2, 8 and 28 times higher than that in PS/PNP (0.0751 L mol-1 S-1) system, respectively. The effect of reaction temperature on PNP oxidation was also investigated. Furthermore, the radical quenching tests and electron paramagnetic resonance spectroscopy (EPR) were employed to investigate the sulfate and hydroxyl radicals for PNP oxidation. The Raman results suggested that the defective sites on biochars possess vital role for oxidation of PNP in PS system. The possible activation pathway of PS/BC was proposed that the defective sites on BC were involved for weakening the O-O bond in PS and subsequently cleaving O-O bond by heat to generate sulfate radical. The oxidation of PNP at low concentration (below 100 μg L-1) was completely removed in urban wastewater by PS/BC system within 30 min. This work would provide new insights into PS activation by BC catalyst and afford a promising method for organic pollutant removal in high-temperature wastewater.
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Affiliation(s)
- Peng Sun
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China
- Institute of Energy and Environment, Inner Mongolia University of Science and Technology, Arding Street 7#, Baotou, 014010, China
| | - Kaikai Zhang
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China
| | - Jianyu Gong
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China
| | - Aimal Khan
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China
| | - Yu Zhang
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China
| | - Md Suzaul Islama
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China
| | - Yanrong Zhang
- Environmental Science Research Institute, Huazhong University of Science and Technology, Luoyu Road 1037#, Wuhan, 430074, People's Republic of China.
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28
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Liu Y, Si B, Zhao C, Jin F, Zheng H, Wang Z. Degradation of emerging contaminants by Co (III) ions in situ generated on anode surface in aqueous solution. CHEMOSPHERE 2019; 221:543-553. [PMID: 30660911 DOI: 10.1016/j.chemosphere.2019.01.076] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
Cobalt ion is an environmental contaminant in general. But interestingly, it can also be used to degrade some refractory organic contaminants in water by mediated electrochemical oxidation process (MEOP) based on Co (III). MEOP is a very promising technology, and it can recycling use the mediator ions, Co (III), to degrade refractory organic contaminants in water. However, previous studies for this technology mainly conducted in strong acidic medium, the oxidation ability of this process for emerging contaminants near neutral pH condition was still unclear. Therefore, this study evaluated the emerging contaminants removal and mineralization efficiency of the MEOP-Co (III) around neutral pH, and investigated systematically the influence of series of operating parameters, including initial Co (II) concentration, current density, initial pH, electrolyte, and anions. Results from these studies indicated that the MEOP-Co (III) had a fairly good contaminants removal and mineralization ability for sulfamethoxazole, tetracycline, carbamazepine, diclofenac, and phenol at neutral pH. Besides, no radical was detected in MEOP-Co (III), and the main oxidizing substance was Co (III) ions, which was generated on anode surface. The addition of CO32-/HCO3- could weaken the oxidation ability of MEOP-Co (III), while Cl- and PO43- could enhance the system's oxidation ability. Moreover, a reasonable energy consumption was achieved in MEOP-Co (III), and the highest electric energy per order (EE/O) value was 2.4 kWh·m-3 in this study.
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Affiliation(s)
- Yongzhi Liu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Bin Si
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China; Henan Urban Planning Institute and Corporation, Henan 450000, PR China
| | - Chun Zhao
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China; College of Water & Architectural Engineering, Shihezi University, Shihezi 832000, PR China.
| | - Fan Jin
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Huaili Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Zhaoyang Wang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China; College of Water & Architectural Engineering, Shihezi University, Shihezi 832000, PR China.
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Wang X, Hu X, Zhao C, Sun Z, Zheng H, Li J, Wang Z. Optimization and mechanism of Acid Orange 7 removal by powdered activated carbon coupled with persulfate by response surface method. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 79:1195-1205. [PMID: 31070599 DOI: 10.2166/wst.2019.117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, powder activated carbon (PAC) utilized to activate peroxydisulfate (PDS) was investigated for decolorization of Acid Orange 7 (AO7). The results indicated a remarkable synergistic effect in the PAC/PDS system. The effect of PAC, PDS dosages and initial pH on AO7 decolorization were studied and the processes followed first-order kinetics. Response surface method with central composite design (CCD) model was utilized to optimize these three factors and analyze the combined interaction. The optimum condition for the decolorization rate of AO7 was analyzed as the following: PAC (0.19 g/L), PDS (1.64 g/L), and initial pH (4.14). Cl- and SO4 2- showed a promoting effect on AO7 decolorization while HCO3 - had a slightly inhibiting effect. Quenching experiments confirmed that both sulfate and hydroxyl radicals were the oxidizing species, and the oxidation reaction occurred on the surface of PAC. The results of UV-vis spectrum with 100% decolorization rate and the 50% total organic carbon reduction indicated highly efficient decolorization and mineralization of AO7 in the PAC/PDS system. Finally, the recovery performance of PAC was studied and the result indicated PAC had poor reuse in reactivity.
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Affiliation(s)
- Xuxu Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China and Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail: ; College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832002, China
| | - Xuebin Hu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China and Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail:
| | - Chun Zhao
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China and Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail: ; College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832002, China
| | - Zhihua Sun
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China and Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail: ; College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832002, China
| | - Huaili Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China and Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail:
| | - Junfeng Li
- College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832002, China
| | - Zhaoyang Wang
- College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832002, China
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Hu L, Zhang G, Liu M, Wang Q, Dong S, Wang P. Application of nickel foam-supported Co 3O 4-Bi 2O 3 as a heterogeneous catalyst for BPA removal by peroxymonosulfate activation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 647:352-361. [PMID: 30081372 DOI: 10.1016/j.scitotenv.2018.08.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 05/07/2023]
Abstract
Nickel foam (NF)-functionalized Co3O4-Bi2O3 nanoparticles (CBO@NF) synthesized using a facile one-step microwave-assistant method were employed as catalysts to activate peroxymonosulfate (PMS) with bisphenol A (BPA) as the target pollutant. The crystallinity, morphology, and chemical valence state of the synthesized CBO@NF were analyzed using XRD, SEM, and XPS, respectively. Moreover, effects of the preparation parameters, including the calcination temperature and calcination time as well as the loading dosage, were evaluated in detail. A degradation efficiency of 95.6% was achieved within 30 min with the optimal degradation system. The CBO@NF/PMS system shows great catalytic activity in a pH range from 3.0 to 11.0. The stability and reusability of the CBO@NF supported catalyst was evaluated through a recycling experiment. In addition, the possible degradation mechanism was also explored using a quenching experiment and electron paramagnetic resonance (EPR) detection. The result shows that both the surface-bound SO4- and OH play significant roles during the degradation process, where the electron transfer of Co2+/Co3+, Bi3+/Bi5+, and Ni2+/Ni3+ realizes the sustained regeneration of the active radicals. This work provides new insight for the practical applications of sulfate radical-based advanced oxidation processes (SR-AOPs) in wastewater treatment.
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Affiliation(s)
- Limin Hu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Guangshan Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Meng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiao Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shuying Dong
- School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Peng Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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Assessment of Sulfate Radical-Based Advanced Oxidation Processes for Water and Wastewater Treatment: A Review. WATER 2018. [DOI: 10.3390/w10121828] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
High oxidation potential as well as other advantages over other tertiary wastewater treatments have led in recent years to a focus on the development of advanced oxidation processes based on sulfate radicals (SR-AOPs). These radicals can be generated from peroxymonosulfate (PMS) and persulfate (PS) through various activation methods such as catalytic, radiation or thermal activation. This review manuscript aims to provide a state-of-the-art overview of the different methods for PS and PMS activaton, as well as the different applications of this technology in the field of water and wastewater treatment. Although its most widespread application is the elimination of micropollutants, its use for the disinfection of wastewater is gaining increasing interest. In addition, the possibility of combining this technology with ultrafiltration membranes to improve the water quality and lifespan of the membranes has also been discussed. Finally, a brief economic analysis of this technology has been undertaken and the different attempts made to implement it at full-scale have been summarized. As a result, this review tries to be useful for all those people working in that area.
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Wu Y, Guo J, Han Y, Zhu J, Zhou L, Lan Y. Insights into the mechanism of persulfate activated by rice straw biochar for the degradation of aniline. CHEMOSPHERE 2018; 200:373-379. [PMID: 29499517 DOI: 10.1016/j.chemosphere.2018.02.110] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 01/19/2018] [Accepted: 02/18/2018] [Indexed: 06/08/2023]
Abstract
This study investigated the degradation of aniline by persulfate (PS) activated with rice straw biochar (RSBC). The results demonstrate that aniline could be rapidly decomposed by a combination of PS and RSBC. The degradation efficiency of aniline was up to 94.1% within 80 min, and meanwhile 52% of the total organic carbon was removed. In the initial pH range of 3-9, aniline could be efficiently removed. Reactive species resulting in the rapid degradation of aniline were investigated via radical and hole quenching experiments with various scavengers (e.g., methanol, tert-butyl alcohol and EDTA) and electron paramagnetic resonance technique. Based on the analysis and observation made here, it is speculated that the predominant reactive species responsible for the degradation of aniline may be holes instead of SO4- and OH radicals. It is concluded that RSBC could be used as an effective catalyst to activate PS for the degradation of aniline.
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Affiliation(s)
- Yao Wu
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jing Guo
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yijie Han
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Junyi Zhu
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lixiang Zhou
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yeqing Lan
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
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Huang T, Zhang K, Qian Y, Fang C, Chen J. Ultrasound enhanced activation of peroxydisulfate by activated carbon fiber for decolorization of azo dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:14407-14414. [PMID: 29464598 DOI: 10.1007/s11356-018-1442-3] [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: 10/30/2017] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Activated carbon fiber (ACF) has become an emerging activator for peroxydisulfate (PDS) to generate sulfate radical (SO4•-). However, the relative low activation efficiency and poor contaminant mineralization limited its widespread application. Herein, ultrasound (US) was introduced to the ACF activated PDS system, and the synergistic effect of US and ACF in PDS activation and the enhancement of contaminant mineralization were investigated. The synergistic effect of US and ACF was observed in the PDS activation to decolorize orange G (OG). The decolorization efficiency increased with increasing ACF loading and US power, and PDS/OG ratio from 1 to 40. The activation energy was determined to be 24.065 kJ/mol. The radical-induced decolorization of OG took place on the surface of ACF, and both SO4•- and hydroxyl radical (•OH) contributed to OG decolorization. The azo bond and naphthalene ring on OG were destructed to other aromatic intermediates and finally mineralized to CO2 and H2O. The introduction of US in the ACF/PDS system significantly enhanced the mineralization of OG. The combination of US and PDS was highly efficient to activate PDS to decolorize azo dyes. Moreover, the introduction of US remarkably improved the contaminant mineralization.
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Affiliation(s)
- Tianyin Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China
| | - Ke Zhang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China
| | - Yajie Qian
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China
| | - Cong Fang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China
| | - Jiabin Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China.
- Xiamen Urban Water Environmental Eco-Planning and Remediation Engineering Research Center (XMERC), Xiamen, China.
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Zhao C, Si B, Mirza ZA, Liu Y, He X, Li J, Wang Z, Zheng H. Activated carbon fiber (ACF) enhances the UV/EF system to remove nitrobenzene in water. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.05.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Zeng T, Yu M, Zhang H, He Z, Zhang X, Chen J, Song S. In situ synthesis of cobalt ferrites-embedded hollow N-doped carbon as an outstanding catalyst for elimination of organic pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 593-594:286-296. [PMID: 28346902 DOI: 10.1016/j.scitotenv.2017.03.180] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/18/2017] [Accepted: 03/19/2017] [Indexed: 06/06/2023]
Abstract
Using polydopamine-metal ions complex as precursor, hollow mesoporous N-doped carbon microspheres encapsulating spinel ferrites nanocrystals (HM-NC/CoFe2O4) were facilely prepared with the aim of creating a novel heterogeneous catalyst for sulfate radical-based oxidation of organic contaminants. The surface morphology, structure and composition of HM-NC/CoFe2O4 catalyst were thoroughly investigated. The applicability of the catalyst was systematically assessed through numerous controlled trials, several operating parameters, as well as different model pollutants by means of peroxymonosulfate (PMS) activation. Outstanding efficiency and excellent reusability were achieved due to the unique structure and composition of HM-NC/CoFe2O4. The HM-NC scaffold with high porosity and surface area not only stabilizes the CoFe2O4 nanoparticles but also greatly facilitates the accessibility and adsorption of substrates to the active sites. In addition, both HM-NC and CoFe2O4 on the material surface can act as active sites. Sulfate radicals and hydroxyl radicals are identified as main active species and a possible enhancement mechanism of catalytic performance is also proposed. Due to the simple synthesis method, low-cost precursors, unique structure and excellent catalytic activity and stability, this novel composite have great potential as new strategic materials for remediation of water pollution.
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Affiliation(s)
- Tao Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, Zhejiang province, PR China
| | - Mingdong Yu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, Zhejiang province, PR China
| | - Haiyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, Zhejiang province, PR China
| | - Zhiqiao He
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, Zhejiang province, PR China
| | - Xiaole Zhang
- College of Life Science, North China University of Science and Technology, Tangshan 063000, Hebei province, PR China
| | - Jianmeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, Zhejiang province, PR China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, Zhejiang province, PR China.
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Huang T, Chen J, Wang Z, Guo X, Crittenden JC. Excellent performance of cobalt-impregnated activated carbon in peroxymonosulfate activation for acid orange 7 oxidation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9651-9661. [PMID: 28251528 DOI: 10.1007/s11356-017-8648-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/16/2017] [Indexed: 06/06/2023]
Abstract
Cobalt-impregnated activated carbon (GAC/Co) was used to produce sulfate radical (SO4·-) from peroxymonosulfate (PMS) in aqueous solution (hereafter called PMS activation). We evaluated its effectiveness by examining the degradation of orange acid 7 (AO7). GAC/Co exhibited high activity to activate PMS to degrade AO7. The degradation efficiency of AO7 increased with increasing dosage of GAC/Co or PMS and elevated temperatures. pH 8 was most favorable for the degradation of AO7 by GAC/Co-activated PMS. The radical quenching experiments indicated that the reactions most likely took place both in the bulk solution and on the surface of GAC/Co. We found that SO4·- played a dominant role in AO7 degradation. Sodium chloride (NaCl) which presents in most dye wastewater had a significant impact on AO7 degradation. Low dosages (<0.4 M) of NaCl showed a slight inhibitory effect, whereas high dosages (0.8 M) increased the reaction rate. HOCl was confirmed as the main contributor for accelerating AO7 degradation with high concentration of NaCl. In a continuous-flow reaction with an empty-bed contact time of 1.35 min, AO7 was not detected in the effluent for 0 to 18.72 L of treated influent volume (156 h) and 85% removal efficiency was still observed after 40.32 L of treated volume (336 h). Finally, the azo bond and the naphthalene structure in AO7 were destroyed and the degradation pathway was proposed.
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Affiliation(s)
- Tianyin Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China
- Brook Byers Institute for Sustainable Systems and the School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Jiabin Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China.
| | - Zhongming Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, People's Republic of China
| | - Xin Guo
- Brook Byers Institute for Sustainable Systems and the School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - John C Crittenden
- Brook Byers Institute for Sustainable Systems and the School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
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