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Xie DH, Li WQ, Xu N, Yuan L, Zhang WH, Huang TY, Sheng GP. Sulfur doping-induced morphological and electronic structure modification of polyoxometalate FeWO 4 for enhanced removal of organic pollutants from water. WATER RESEARCH 2024; 257:121695. [PMID: 38723352 DOI: 10.1016/j.watres.2024.121695] [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: 02/04/2024] [Revised: 04/17/2024] [Accepted: 04/28/2024] [Indexed: 05/29/2024]
Abstract
Wolframite (FeWO4), a typical polyoxometalate, serves as an auspicious candidate for heterogeneous catalysts, courtesy of its high chemical stability and electronic properties. However, the electron-deficient surface-active Fe species in FeWO4 are insufficient to cleave H2O2 via Fe redox-mediated Fenton-like catalytic reaction. Herein, we doped Sulfur (S) atom into FeWO4 catalysts to refine the electronic structure of FeWO4 for H2O2 activation and sulfamethoxazole (SMX) degradation. Furthermore, spin-state reconstruction on S-doped FeWO4 was found to effectively refine the electronic structure of Fe in the d orbital, thereby enhancing H2O2 activation. S doping also accelerated electron transfer during the conversion of sulfur species, promoting the cycling of Fe(III) to Fe(II). Consequently, S-doped FeWO4 bolstered the Fenton-like reaction by nearly two orders of magnitude compared to FeWO4. Significantly, the developed S-doped FeWO4 exhibited a remarkable removal efficiency of approximately 100% for SMX within 40 min in real water samples. This underscores its extensive pH adaptability, robust catalytic stability, and leaching resistance. The matrix effects of water constituents on the performance of S-doped FeWO4 were also investigated, and the results showed that a certain amount of Cl-, SO42-, NO3-, HCO3- and PO43- exhibited negligible effects on the degradation of SMX. Theoretical calculations corroborate that the distinctive spin-state reconstruction of Fe center in S-doped FeWO4 is advantageous for H2O2 decomposition. This discovery offers novel mechanistic insight into the enhanced catalytic activity of S doping in Fenton-like reactions and paves the way for expanding the application of FeWO4 in wastewater treatment.
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Affiliation(s)
- Dong-Hua Xie
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Wen-Qiang Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Nuo Xu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Li Yuan
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Wen-Hua Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Tian-Yin Huang
- National and Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, 215009, China
| | - Guo-Ping Sheng
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
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2
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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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Wang Q, Lu J, Yu M, Li H, Lin X, Nie J, Lan N, Wang Z. Sulfur vacancy rich MoS 2/FeMoO 4 composites derived from MIL-53(Fe) as PMS activator for efficient elimination of dye: Nonradical 1O 2 dominated mechanism. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 333:121990. [PMID: 37301457 DOI: 10.1016/j.envpol.2023.121990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/19/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023]
Abstract
A novel MoS2/FeMoO4 composite was synthesized for the first time by introducing an inorganic promoter MoS2 into the MIL-53(Fe)-derived PMS-activator. The prepared MoS2/FeMoO4 could effectively activate peroxymonosulfate (PMS) toward 99.7% of rhodamine B (RhB) degradation in 20 min, and achieve a kinetic constant of 0.172 min-1, which is 10.8, 43.0 and 3.9 folds higher than MIL-53, MoS2 and FeMoO4 components, respectively. Both Fe(II) and sulfur vacancies are identified as the main active sites on catalyst surface, where sulfur vacancies can promote adsorption and electron migration between peroxymonosulfate and MoS2/FeMoO4 to accelerate peroxide bond activation. Besides, the Fe(III)/Fe(II) redox cycle was improved by reductive Fe0, S2- and Mo(IV) species to further boost PMS activation and RhB degradation. Comparative quenching experiment and in-situ electron paramagnetic resonance (EPR) spectra verified that SO4•-, •OH, 1O2 and O2•- were produced in the MoS2/FeMoO4/PMS system, while 1O2 dominates RhB elimination. In addition, the influences of various reaction parameters on RhB removal were examined and the MoS2/FeMoO4/PMS system exhibits good performance over a wide pH and temperature range, as well as coexistence with common inorganic ions and humic acid (HA). This study provides a new strategy for preparing MOF-derived composite with simultaneous introduction of MoS2 promotor and rich sulfur vacancies, and enables new insight into radical/nonradical pathway in PMS activation process.
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Affiliation(s)
- Qiao Wang
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Jiahong Lu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Meirui Yu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Huarui Li
- School of Civil Engineering, Yantai University, Yantai, 264005, PR China.
| | - Xinhong Lin
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Jinxu Nie
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Nan Lan
- Guangdong Jiuyu Engineering and Technology Consulting Co., Ltd, Guangzhou, 510635, PR China.
| | - Zhihong Wang
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
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4
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Yan Y, Wei Z, Duan X, Long M, Spinney R, Dionysiou DD, Xiao R, Alvarez PJJ. Merits and Limitations of Radical vs. Nonradical Pathways in Persulfate-Based Advanced Oxidation Processes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:12153-12179. [PMID: 37535865 DOI: 10.1021/acs.est.3c05153] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Urbanization and industrialization have exerted significant adverse effects on water quality, resulting in a growing need for reliable and eco-friendly treatment technologies. Persulfate (PS)-based advanced oxidation processes (AOPs) are emerging as viable technologies to treat challenging industrial wastewaters or remediate groundwater impacted by hazardous wastes. While the generated reactive species can degrade a variety of priority organic contaminants through radical and nonradical pathways, there is a lack of systematic and in-depth comparison of these pathways for practical implementation in different treatment scenarios. Our comparative analysis of reaction rate constants for radical vs. nonradical species indicates that radical-based AOPs may achieve high removal efficiency of organic contaminants with relatively short contact time. Nonradical AOPs feature advantages with minimal water matrix interference for complex wastewater treatments. Nonradical species (e.g., singlet oxygen, high-valent metals, and surface activated PS) preferentially react with contaminants bearing electron-donating groups, allowing enhancement of degradation efficiency of known target contaminants. For byproduct formation, analytical limitations and computational chemistry applications are also considered. Finally, we propose a holistically estimated electrical energy per order of reaction (EE/O) parameter and show significantly higher energy requirements for the nonradical pathways. Overall, these critical comparisons help prioritize basic research on PS-based AOPs and inform the merits and limitations of system-specific applications.
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Affiliation(s)
- Yiqi Yan
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Zongsu Wei
- Centre for Water Technology (WATEC) & Department of Engineering, Aarhus University, Hangøvej 2, DK-8200 Aarhus N, Denmark
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide SA5005, Australia
| | - Mingce Long
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Richard Spinney
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Ruiyang Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, 77005, United States
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5
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Zhang X, Liu W, Gao T, Cao D, Che X, Zhou S, Shang J, Cheng X. A novel iron molybdate photocatalyst with heterojunction-like band gap structure for organic pollutant degradation by activation of persulfate under simulated sunlight irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:53157-53176. [PMID: 36853542 DOI: 10.1007/s11356-023-26056-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Advanced oxidation processes (AOPs) applied to wastewater treatment have become increasingly well developed and the ability of a single technology to remove difficult organic pollutants is limited. One of the main limiting factors is the insufficient variety and quantity of active species generated during the reaction process and catalyst failure. The coupling of the two methods is a practical and effective approach. In this study, different types of semiconductor persulfate (PS) activators, iron molybdate nanoparticles (I-FeMoO4, II-FeMoO4, and III-FeMoO4), were synthesized by simple solvothermal and calcination methods and applied to photo-assisted activation of PS systems. In addition, the relationship between the intrinsic physicochemical and optoelectronic properties of FeMoO4 and the catalytic degradation performance was revealed by a series of characterization tools, and the dominant catalysts were screened. At an unadjusted pH of 4.86, 0.6 g L-1 of PS and 0.4 g L-1 of I-FeMoO4 could achieve efficient degradation of several difficult organic dye contaminants (rhodamine b (Rh B), methylene blue (MB), malachite green (MG), methyl orange (MO), and tartrazine (TTZ)) and other antibiotic contaminants (sulfamethoxazole (SMX), tetracycline (TC), norfloxacin (NOR), and carbamazepine (CBZ)) within 5-60 min. Possible degradation mechanisms in the I-FeMoO4/PS/Light reaction system were suggested by radical trapping experiments and electron paramagnetic resonance (EPR) tests. Recovery tests demonstrated that I-FeMoO4 has good recoverable stability and did not cause secondary pollution. Finally, our study provided a new perspective on the application of coupled wastewater treatment technologies in the practical treatment of organic wastewater.
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Affiliation(s)
- Xinyi Zhang
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Weibao Liu
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Tianyue Gao
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Dongran Cao
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Xinrong Che
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Shengwen Zhou
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Jiangwei Shang
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, College of Chemistry and Environmental Science, Yili Normal University, Yining, 835000, People's Republic of China
| | - Xiuwen Cheng
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, College of Chemistry and Environmental Science, Yili Normal University, Yining, 835000, People's Republic of China.
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6
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Hua W, Kang Y. Synergistic degradation of Orange G in water via water surface plasma assisted with β-Bi2O3/CaFe2O4. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1278-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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7
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Yu H, Liu Y, Cong S, Xia S, Zou D. Review of Mo-based materials in heterogeneous catalytic oxidation for wastewater purification. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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8
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Thao LT, Nguyen TV, Nguyen VQ, Phan NM, Kim KJ, Huy NN, Dung NT. Orange G degradation by heterogeneous peroxymonosulfate activation based on magnetic MnFe 2O 4/α-MnO 2 hybrid. J Environ Sci (China) 2023; 124:379-396. [PMID: 36182147 DOI: 10.1016/j.jes.2021.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 10/04/2021] [Accepted: 10/09/2021] [Indexed: 06/16/2023]
Abstract
Wastewater containing an azo dye Orange G (OG) causes massive environmental pollution, thus it is critical to develop a highly effective, environmental-friendly, and reusable catalyst in peroxymonosulfate (PMS) activation for OG degradation. In this work, we successfully applied a magnetic MnFe2O4/α-MnO2 hybrid fabricated by a simple hydrothermal method for OG removal in water. The characteristics of the hybrid were investigated by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller method, vibrating sample magnetometry, electron paramagnetic resonance, thermogravimetric analysis, and X-ray photoelectron spectroscopy. The effects of operational parameters (i.e., catalytic system, catalytic dose, solution pH, and temperature) were investigated. The results exhibited that 96.8% of OG degradation was obtained with MnFe2O4/α-MnO2(1:9)/PMS system in 30 min regardless of solution pH changes. Furthermore, the possible reaction mechanism of the coupling system was proposed, and the degradation intermediates of OG were identified by mass spectroscopy. The radical quenching experiments and EPR tests demonstrated that SO4•̶, O2•̶, and 1O2 were the primary reactive oxygen species responsible for the OG degradation. The hybrid also displayed unusual stability with less than 30% loss in the OG removal after four sequential cycles. Overall, magnetic MnFe2O4/α-MnO2 hybrid could be used as a high potential activator of PMS to remove orange G and maybe other dyes from wastewater.
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Affiliation(s)
- Le Thi Thao
- Faculty of Physical and Chemical Engineering, Le Quy Don Technical University, Hanoi 100000, Vietnam; Department of Energy Engineering, Konkuk University, Seoul 05029, Korea
| | - To Van Nguyen
- Faculty of Physical and Chemical Engineering, Le Quy Don Technical University, Hanoi 100000, Vietnam
| | - Van Quy Nguyen
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Jangan-gu, Suwon 16419, Korea
| | - Ngoc Man Phan
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Jangan-gu, Suwon 16419, Korea
| | - Ki Jae Kim
- Department of Energy Engineering, Konkuk University, Seoul 05029, Korea.
| | - Nguyen Nhat Huy
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 700000, Vietnam; Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Nguyen Trung Dung
- Faculty of Physical and Chemical Engineering, Le Quy Don Technical University, Hanoi 100000, Vietnam.
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9
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Degradation of lomefloxacin by MoS 2/MIL-53(Fe, Cu) catalyst in heterogeneous electro-Fenton process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:40534-40550. [PMID: 36622598 DOI: 10.1007/s11356-022-24999-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 12/22/2022] [Indexed: 01/10/2023]
Abstract
A novel heterogeneous catalyst named MoS2/MIL-53(Fe, Cu) (MMFC) was prepared by hydrothermal method and applied in a heterogeneous electro-Fenton (hetero-EF) system for lomefloxacin (LOM) degradation in this work. Under the optimal conditions of current density 3 mA/cm2, catalyst dosage 0.100 g/L, and initial pH 6, 93.5% LOM (2 mg/L) removal efficiency was achieved in the MMFC hetero-EF system within 60 min, indicating an obvious improvement compared with the MIL-53(Fe, Cu) hetero-EF system. The good catalytic activity was attributed to more effective active sites of the catalyst and the conversion of Fe(II)/Fe(III) and Cu(I)/Cu(II) promoted by Mo(IV) in MoS2, which could be inferred by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) characterizations. The reusability and stability of MMFC were explored based on five cyclic experiments, and the average degradation efficiency reached 73.9%. Furthermore, the hetero-EF system could achieve the total removal of moxifloxacin and tetracycline within 6 min and 40 min, respectively. Quenching experiments revealed that the hydroxyl radicals (·OH) were the main reactive radicals while superoxide radicals (·O2-) and singlet oxygen (1O2) played a certain part in LOM degradation. Finally, the possible mechanism of the hetero-EF process and LOM degradation pathways were proposed, including substitution, elimination, and cleavage of ring structures. Accounting for good catalytic performance, low preparation cost, and satisfactory versatility, the MMFC exhibited good potential to work as a hetero-EF catalyst for wastewater treatment.
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10
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Abutalib M, Alghamdi HM, Rajeh A, Nur O, Hezmad A, Mannaa MA. Preparation of rGO/FeMoO4 as high-performance photocatalyst for degradation of malachite green, phenol and H2 evolution under natural sunlight. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2022; 47:32955-32968. [DOI: 10.1016/j.ijhydene.2022.07.189] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
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11
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12
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Sun Z, Zhu Y, Deng Y, Liu F, Ruan W, Xie L, Beadham I. Nature of surface active centers in activation of peroxydisulfate by CuO for degradation of BPA with non-radical pathway. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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13
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Tian X, Luo T, Nie Y, Shi J, Tian Y, Dionysiou DD, Wang Y. New Insight into a Fenton-like Reaction Mechanism over Sulfidated β-FeOOH: Key Role of Sulfidation in Efficient Iron(III) Reduction and Sulfate Radical Generation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5542-5551. [PMID: 35412804 DOI: 10.1021/acs.est.2c00132] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Sulfidation can greatly improve the efficiency of utilization of reducing equivalents for contaminant removal; however, whether this method benefits Fenton-like reactions or not and the possible mechanism are not well understood. In this study, we revealed that surface sulfidation can greatly promote the heterogeneous Fenton activity of β-FeOOH (Fe3S4@β-FeOOH) by 40 times, in which not only the •OH formation was enhanced but also SO4•- as a new oxidation species was generated. Moreover, their contribution to metronidazole (MTZ) degradation was 52.5 and 37.1%, respectively. In comparison, almost no HO2•/O2•- was detected in the Fe3S4@β-FeOOH/H2O2 system. These results were different from some previously reported Fenton counterparts. Based on the characterization and probe experiments, sulfur species, including S2-, S0, and Sn2-, as an electron donor and electron shuttle were responsible for efficient conversion of Fe(III) into Fe(II) other than via the Haber-Weiss mechanism, leading to excellent •OH generation via a Fenton-like mechanism. Most importantly, HSO5- can be generated from SO32- oxidized by •OH, and its scission into SO4•- was not dependent on the extra electric potential or Fe-O2-S(IV) intermediate. These findings provided new insight for utilizing sulfidation to improve the activity of iron-based Fenton catalysts.
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Affiliation(s)
- Xike Tian
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Tiantian Luo
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Yulun Nie
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Jianbo Shi
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, P. R. China
| | - Yayang Tian
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, P. R. China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012, United States
| | - Yanxin Wang
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, P. R. China
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14
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Li Y, Ma L, Fu Y, Zhang C, Shi Y, Xu Y, Li J. Sulfurization enhancement of FeMoO4 for electrochemical ammonia synthesis with high Faradaic efficiency in neutral media. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2021.115981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Zhu F, Zhou S, Sun M, Ma J, Zhang W, Li K, Cheng H, Komarneni S. Heterogeneous activation of persulfate by Mg doped Ni(OH) 2 for efficient degradation of phenol. CHEMOSPHERE 2022; 286:131647. [PMID: 34346329 DOI: 10.1016/j.chemosphere.2021.131647] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/09/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Mg doped Ni(OH)2 was synthesized and investigated as an efficient material to activate persulfate (PS) for phenol degradation. The property of the Ni(OH)2 material was enhanced by Mg doping as the removal efficiency of phenol was increased from 74.82 % in Ni(OH)2/PS system to 89.53 % in Mg-doped Ni(OH)2/PS system within 20 min. Such a high removal efficiency revealed that doping Mg into Ni(OH)2 brings about more defects (oxygen vacancies), which facilitated the formation of more active species in the degradation process. The removal efficiencies of phenol increased with the increase of the initial pH from 3 to 11. The influences of Cl-, NO3- and HCO3- on the stability of the system were also studied and the results showed that removal rates of all systems in the presence of these different inorganic anions could reached about 90 % within 20 min. Based on the electron spin resonance (ESR) experiments, 1O2, O2·-, ·OH and SO4•- were identified as the active species in Mg-doped Ni(OH)2/PS system for phenol degradation and a degradation mechanism was proposed for this system. In addition, the as-prepared material retained its activation performance even after 3 repeated cycles.
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Affiliation(s)
- Fang Zhu
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Siyi Zhou
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Mengying Sun
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Jianfeng Ma
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China.
| | - Wei Zhang
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Kunjie Li
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Hao Cheng
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Guangxi, 545006, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Materials Research Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA.
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16
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Wang N, Zhang J, Zhou P, Zhang Y, Li W, Cheng F, Pan Z, Liu Y, Lai B. Iron molydate catalyzed activation of peroxymonosulfate for bisphenol AF degradation via synergetic non-radical and radical pathways. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 797:149151. [PMID: 34346353 DOI: 10.1016/j.scitotenv.2021.149151] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Though molybdate oxides have been demonstrated as desirable catalysts for environmental remediation, the mechanism of catalytic activation of peroxymonosulfate (PMS) by iron (II) molybdate (FeMoO4) remains unclear. In this study, FeMoO4 was synthesized and applied for the activation of PMS to degrade bisphenol-AF (BPAF). FeMoO4 showed excellent catalytic activity, high stability, and superior mineralization. The influence of operation parameters (i.e., FeMoO4 dosage, PMS concentration, initial pH, co-existing anions, and temperature) on the removal of BPAF were also investigated in detail. Furthermore, the possible oxidation mechanism was proposed via the chemical quenching tests and electron spin resonance (ESR) analysis, which certified that both free radical (SO4-• and •OH) and non-radical (1O2) were the main reactive oxygen species for degrading BPAF. X-ray photoelectron spectroscopy (XPS) analysis indicated that the radicals were mainly generated via the continuous circulation of Fe3+/Fe2+ and Mo6+/Mo4+ redox cycles to enhance PMS activation. Finally, the degradation pathways of BPAF was proposed based on LC/MS results. This work showed the notable potential of the FeMoO4/PMS system for degrading organic contaminants in the environment remediation and would promote the understanding of the mechanism of Fe-based molybdate in advanced oxidation.
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Affiliation(s)
- Ningruo Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jian Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Chengdu Engineering Corporation Ltd., Power China, Chengdu 611130, China
| | - Peng Zhou
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin 644044, China
| | - Yongli Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Wei Li
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Feng Cheng
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Zhicheng Pan
- Laboratory of Wastewater Treatment Technology in Sichuan Province, Haitian Water Group, China
| | - Yang Liu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Laboratory of Wastewater Treatment Technology in Sichuan Province, Haitian Water Group, China.
| | - Bo Lai
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin 644044, China
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17
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Lin X, Yang X, Hu Z, Zhang Y, Wang J, Zhang Z, Zhao Z, Li Y. Highly effective removal of bisphenol A by greigite/persulfate in spiked soil: Heterogeneous soil/water system balance and degradation. CHEMOSPHERE 2021; 280:130655. [PMID: 33940457 DOI: 10.1016/j.chemosphere.2021.130655] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
The degradation of bisphenol A (BPA) in spiked soil was studied to investigate persulfate (PS) activation by the environment-friendly heterogeneous material greigite for removing organic pollutants from soil. The effects of the PS and greigite doses were investigated, and the BPA degradation rate in the lateritic red soil was lower than that in kaolin. Notably, 500 mg/kg of BPA could be effectively removed by the flower-like greigite (FLG)/PS system in 30 min. The difference in BPA degradation in kaolin and the lateritic red soil was negligible, thus indicating that the contents of components such as total organic matters in the lateritic red soil did not affect the BPA degradation rate of the FLG/PS system considerably. Furthermore, the distribution processes of BPA in the soil and liquid phase were also investigated in detail. The results showed that the water contents were a key factor in the distribution and degradation of BPA. The transfer of BPA from kaolin to the liquid phase was simpler than that from the lateritic red soil to the liquid phase. BPA might be transferred to the liquid phase first and then degraded by the FLG/PS system in that phase. Regarding BPA degradation in the lateritic red soil, BPA was degraded in the soil and liquid phases at the same time. This study proposed a pathway for BPA degradation in soil slurries by heterogeneous material/PS systems for first time, providing a deeper understanding of the degradation mechanism of organic pollutants in soil and new methods for soil remediation.
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Affiliation(s)
- Xueming Lin
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China.
| | - Xingjian Yang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Zheng Hu
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Yulong Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Jinjin Wang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Zhen Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Zhongqiu Zhao
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Yongtao Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China.
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18
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Wang W, Chen M, Wang D, Yan M, Liu Z. Different activation methods in sulfate radical-based oxidation for organic pollutants degradation: Catalytic mechanism and toxicity assessment of degradation intermediates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 772:145522. [PMID: 33571779 DOI: 10.1016/j.scitotenv.2021.145522] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/23/2021] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
With the continuous development of industrialization, a growing number of refractory organic pollutants are released into the environment. These contaminants could cause serious risks to the human health and wildlife, therefore their degradation and mineralization is very critical and urgent. Recently sulfate radical-based advanced oxidation technology has been widely applied to organic pollutants treatment due to its high efficiency and eco-friendly nature. This review comprehensively summarizes different methods for persulfate (PS) and peroxymonosulfate (PMS) activation including ultraviolet light, ultrasonic, electrochemical, heat, radiation and alkali. The reactive oxygen species identification and mechanisms of PS/PMS activation by different approaches are discussed. In addition, this paper summarized the toxicity of degradation intermediates through bioassays and Ecological Structure Activity Relationships (ECOSAR) program prediction and the formation of toxic bromated disinfection byproducts (Br-DBPs) and carcinogenic bromate (BrO3-) in the presence of Br-. The detoxification and mineralization of target pollutants induced by different reactive oxygen species are also analyzed. Finally, perspectives of potential future research and applications on sulfate radical-based advanced oxidation technology in the treatment of organic pollutants are proposed.
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Affiliation(s)
- Wenqi Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Ming Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China.
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Ming Yan
- 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
| | - Zhifeng 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
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19
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Wang Z, Li H, Ma W, Wang Y, Cui P, Qi J, Chen Z, Zhu Z, Meng F. Highly efficient electro-catalysis activationof peroxymonosulfate by “used” As/Cr/Mo@FeOOH material for the degradation of metronidazole: Degradation mechanism and toxicity assessment. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.03.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Qiu Y, Zhang Q, Wang Z, Gao B, Fan Z, Li M, Hao H, Wei X, Zhong M. Degradation of anthraquinone dye reactive blue 19 using persulfate activated with Fe/Mn modified biochar: Radical/non-radical mechanisms and fixed-bed reactor study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143584. [PMID: 33272600 DOI: 10.1016/j.scitotenv.2020.143584] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/16/2020] [Accepted: 10/30/2020] [Indexed: 06/12/2023]
Abstract
In this study, a heterogeneous activator was prepared via the Fe/Mn modification of sludge-derived biochar (Fe/MnBC) to achieve high-efficiency activation of persulfate (PS) for reactive blue 19 (RB19) degradation. The morphologies and chemical states of Fe/MnBC were examined by various characterizations. A comprehensive assessment was conducted to reveal the effects of biochar preparation conditions and system reaction conditions. According to the results of scavenger quenching experiments and electron paramagnetic resonance (EPR) testing, the mechanisms of Fe/MnBC combined PS system on RB19 degradation were proposed, including radical and non-radical mechanisms. The formation and involvement of sulfate radical (SO4·-), hydroxyl radical (OH·), and singlet oxygen (1O2) were proved in this system, and Fe(IV)/Mn(VII) was also speculated to participate in the non-radical degradation process. These findings give a new insight into the mechanisms of PS activated by metal-biochar composite. Besides, fixed-bed reactor (FBR) experiments indicated that the Fe/MnBC has considerable PS activation potential for dyes removal. The degradation process was further modeled by the central composite design (CCD-RSM) and artificial neural networks (ANN) methods. The statistical metrics and prediction indicated that the prediction results of ANN model were better than CCD-RSM model, and the ANN model could perfectly predict the reaction process of Fe/MnBC FBR for engineering applications.
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Affiliation(s)
- Yue Qiu
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Qian Zhang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, PR China.
| | - Zhihao Wang
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, PR China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Zixi Fan
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, United States
| | - Meng Li
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Huiru Hao
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Xiaonan Wei
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Min Zhong
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, PR China
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21
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Copper-oxygen synergistic electronic reconstruction on g-C3N4 for efficient non-radical catalysis for peroxydisulfate and peroxymonosulfate. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117957] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Gao C, Yu W, Zhu Y, Wang M, Tang Z, Du L, Hu M, Fang L, Xiao X. Preparation of porous silicate supported micro-nano zero-valent iron from copper slag and used as persulfate activator for removing organic contaminants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142131. [PMID: 33254954 DOI: 10.1016/j.scitotenv.2020.142131] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/15/2020] [Accepted: 08/30/2020] [Indexed: 06/12/2023]
Abstract
Porous silicate supported micro-nano zero-valent iron (PSi@ZVI) was prepared from copper slag (CS) through carbothermal reduction technology, and used as a persulfate (PS) activator for removing organic contaminants. Results showed that the properties of the activator were greatly affected by the preparation conditions. Calcination for 20 min at 1100 °C with 20% anthracite was considered the optimum preparation condition for degradation of orange G (OG). The removal rate of OG was improved by increasing the dosages of PSi@ZVI or PS and raising the reaction temperature. Moreover, PSi@ZVI exhibited excellent PS activator ability in a wide range of initial pH, good degradation capability for eosin Y, methyl orange, acid fuchsine, and methylene blue. The reusability and safety of PSi@ZVI were verified. Electron paramagnetic resonance and radical quenching tests indicated that sulfate radical (SO4-) was the main active species in the PSi@ZVI/PS system. The X-ray diffraction results indicated that a high calcination temperature (1100 °C) was beneficial to the reduction of iron-bearing minerals to ZVI. Scanning electron microscopy and energy-dispersive spectroscopy results revealed that the formation of porous structure of PSi@ZVI and the generation of nano to micro-sized ZVI particles on the surface of the silicate holes. The X-ray photoelectron spectra showed that ZVI was first convert into Fe(II), which mainly activated PS and generated Fe(III) in the PSi@ZVI/PS system. Furthermore, the intermediates of OG were detected using gas chromatography-mass spectrometry, and the possible degradation pathway of OG was proposed. This study provides a novel approach for reuse of CS as a heterogeneous activator to effectively activate PS.
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Affiliation(s)
- Caiqi Gao
- School of Architectural and Surveying and Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
| | - Wen Yu
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China.
| | - Yichun Zhu
- School of Architectural and Surveying and Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China.
| | - Miao Wang
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
| | - Zuozhen Tang
- School of Architectural and Surveying and Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
| | - Li Du
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
| | - Mengying Hu
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
| | - Long Fang
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
| | - Xingcong Xiao
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China
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23
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Liu T, Miao D, Liu G, Wei Q, Zhou K, Yu Z, Ma L. A novel gradient current density output mode for effective electrochemical oxidative degradation of dye wastewater by boron-doped diamond (BDD) anode. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:2085-2097. [PMID: 33263586 DOI: 10.2166/wst.2020.473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In order to solve the problems of high energy consumption and low current efficiency in electrochemical oxidation (EO) degradation under the traditional constant output process (COP), a gradient output process (GOP) of current density is proposed in this paper. That is, the current density is gradually reduced in a fixed degradation time, and the Reactive Blue 19 simulated dye wastewater was used as the degradation target. The general applicability of the process was further confirmed by studying the optimal gradient current density output parameters, the dye concentration, electrolyte concentration and other dye compounds with different molecular structures. The corresponding results show that the chemical oxygen demand (COD) removal (78%) and the color removal (100%) under the GOP are similar to those in the COP, and the overall energy consumption is reduced by about 50% compared with that in the traditional constant current mode. Moreover, the current efficiency in the middle and late stages of EO process has increased by 8.6 times compared with COP.
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Affiliation(s)
- Ting Liu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail: ; The authors contributed equally to this work and should be considered co-first authors
| | - Dongtian Miao
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail: ; The authors contributed equally to this work and should be considered co-first authors
| | - Guoshuai Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiuping Wei
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Zhiming Yu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Li Ma
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
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24
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Wan Y, Wan J, Zhao JR, Wang Y, Luo T, Yang S, Liu Y. Facile preparation of iron oxide doped Fe-MOFs-MW as robust peroxydisulfate catalyst for emerging pollutants degradation. CHEMOSPHERE 2020; 254:126798. [PMID: 32334254 DOI: 10.1016/j.chemosphere.2020.126798] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/04/2020] [Accepted: 04/12/2020] [Indexed: 06/11/2023]
Abstract
A novel catalyst (Fe-MOFs-MW) was facilely synthesized under microwave-assisted with NaOH as modulator for activating peroxydisulfate (PDS). The accelerated nucleation process was confirmed by Johnson-Mehl-Avrami (JMA) model. There were abundant reactive sites on prepared Fe-MOFs-MW while maintaining high Space-Time-Yield value up to 2300 kg/m3·d. Degradation performance of Fe-MOFs-MW as PDS catalyst on sulfamethoxazole (SMX) removal was evaluated. Results indicated that Fe-MOFs-MW with more Fe element anchored (10%) exhibited excellent catalytic capacity for PDS. Besides, the fantastic stability and reusability were confirmed through recycle experiment. After recycled for 4 times, the removal efficiency of SMX and TOC was 88% and 31.3% compared to 98% and 38% without recycling, respectively. An accurate prediction model on the degradation effect with water matrices coexisted was established by response surface methodology (RSM) method. Moreover, SO4·-, O2·- and ·OH were confirmed as the main reactive species through chemical quenching and EPR tests. The mechanism of Fe-MOFs-MW/PDS process mainly based on electron circulation theory was proposed. As the robust PDS catalyst, facile prepared Fe-MOFs-MW was promising in the treatment of emerging pollutants.
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Affiliation(s)
- Yongjie Wan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Jinquan Wan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, 510640, China.
| | - Joe R Zhao
- Tri-Y Environmental Research Institute, 2655 Lillooet St., Vancouver, BC V5M 4P7, Canada
| | - Yan Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, 510640, China
| | - Ting Luo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Shou Yang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yaxin Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
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25
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Miao D, Liu G, Wei Q, Hu N, Zheng K, Zhu C, Liu T, Zhou K, Yu Z, Ma L. Electro-activated persulfate oxidation of malachite green by boron-doped diamond (BDD) anode: effect of degradation process parameters. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:925-935. [PMID: 32541111 DOI: 10.2166/wst.2020.176] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, boron-doped diamond (BDD) electro-activated persulfate was studied to decompose malachite green (MG). The degradation results indicate that the decolorization performance of MG for the BDD electro-activated persulfate (BDD-EAP) system is 3.37 times that of BDD electrochemical oxidation (BDD-EO) system, and BDD-EAP system also exhibited an enhanced total organic content (TOC) removal (2.2 times) compared with BDD-EO system. Besides, the degradation parameters such as persulfate concentration, current density, and pH were studied in detail. In a wider range of pH (2-10), the MG can be efficiently removed (>95%) in 0.02 M persulfate solution with a low current density of 1.7 mA/cm2 after 30 min. The BDD-EAP technology decomposes organic compounds without the diffusion limitation and avoids pH adjustment, which makes the EO treatment of organic wastewater more efficient and more economical.
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Affiliation(s)
- Dongtian Miao
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Guoshuai Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiuping Wei
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Naixiu Hu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Kuangzhi Zheng
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Chengwu Zhu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Ting Liu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Zhiming Yu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
| | - Li Ma
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China E-mail:
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26
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Wan Y, Wan J, Ma Y, Wang Y, Luo T. Sustainable synthesis of modulated Fe-MOFs with enhanced catalyst performance for persulfate to degrade organic pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 701:134806. [PMID: 31715482 DOI: 10.1016/j.scitotenv.2019.134806] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/02/2019] [Accepted: 10/02/2019] [Indexed: 06/10/2023]
Abstract
In this study, four typical modulators (NH4OH(A), CH3COOH(B), CH3COONa(C) and CH3COONH4(D)) were applied to modulate the microwave-assisted synthesis of Fe-MOFs. The effects of various modulators on the yield, electrochemistry activity and PS activation capacity of prepared catalysts were systematically investigated. The ideal modulator was revealed as the 7.5 mM CH3COONH4. Contributed by the defects caused by the dual effects of CH3COONH4, Fe-MOFs-D-7.5/PS system showed excellent orange G (OG) degradation with high reaction stoichiometric efficiency (RSE) and desirable recycling performance. The main radicals should be SO4·- and O2·- which were confirmed by EPR and chemical quenchers. Furthermore, the frontier molecular orbital (FMO) theory and dual descriptor (DD) method were employed in predicting radical attacking sites of OG. According to the results of theoretical computations and experimental detection, degradation pathways of OG in Fe-MOFs-D-7.5/PS system were proposed. Similar to the function of the battery, this study gives new insight into the possible mediatory roles of Fe-MOFs-D-7.5 in PS activation by transferring the electrons between PS and the unsaturated metal sites (CUS). The Fe-MOFs-D-7.5/PS system is a promising process for environmental remediation.
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Affiliation(s)
- Yongjie Wan
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jinquan Wan
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Sino-Singapore International Joint Research Institute, Guangzhou 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou 510640, China.
| | - Yongwen Ma
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Sino-Singapore International Joint Research Institute, Guangzhou 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou 510640, China
| | - Yan Wang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou 510640, China
| | - Ting Luo
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
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27
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Liu S, Zhang J, Chen M, Wang X. Continuous release of SO4˙− over g-C3N4/ZnO/Fe(iii) systems mediated by persulfates: the Fe(iii)/Fe(ii) cycling and degradation pathway. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00102c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A process to obtain Fe(ii) by photogenerating electrons for the activation of persulfates and durable release of sulfate free radicals was proposed.
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Affiliation(s)
- Shaomin Liu
- Key Laboratory of Safe and Effective Coal Mining (Anhui University of Science and Technology)
- Ministry of Education
- China
- School of Earth Science and Environmental Engineering
- Anhui University of Science and Technology
| | - Jianshu Zhang
- Key Laboratory of Safe and Effective Coal Mining (Anhui University of Science and Technology)
- Ministry of Education
- China
- School of Earth Science and Environmental Engineering
- Anhui University of Science and Technology
| | - Meiling Chen
- Key Laboratory of Safe and Effective Coal Mining (Anhui University of Science and Technology)
- Ministry of Education
- China
- School of Earth Science and Environmental Engineering
- Anhui University of Science and Technology
| | - Xiaoxiao Wang
- Key Laboratory of Safe and Effective Coal Mining (Anhui University of Science and Technology)
- Ministry of Education
- China
- School of Earth Science and Environmental Engineering
- Anhui University of Science and Technology
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Chen W, Bao Y, Li X, Huang J, Tang Y, Li L. Mineralization of salicylic acid via catalytic ozonation with Fe-Cu@SiO 2 core-shell catalyst: A two-stage first order reaction. CHEMOSPHERE 2019; 235:470-480. [PMID: 31272007 DOI: 10.1016/j.chemosphere.2019.06.168] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/14/2019] [Accepted: 06/21/2019] [Indexed: 06/09/2023]
Abstract
Mesoporous Fe-Cu@SiO2 core-shell catalyst was synthesized and assessed for its catalytic activity in the ozonation of salicylic acid (SA). The synthesized catalyst was characterized by XRD, TEM, SEM, XPS, H2-TPR, etc. Fe-Cu@SiO2 exhibited a regular spherical shape and had the surface area at 1216 m2 g-1. The wrapping of metal components and their strong interaction prevented metal leaching. Fe-Cu@SiO2 showed the highest activity for SA mineralization when compared with Fe@SiO2 and Cu@SiO2. In Fe-Cu@SiO2/O3, 88% TOC was removed, which was 2.5 times as much as that in sole ozonation. SA degradation efficiency in Fe-Cu@SiO2/O3 increased with initial pH. O3, ·OH and H2O2 were the main reactive oxygen species accounting for SA mineralization. Due to their scavenging effect of ·OH, NH4+, NO3- and humic acids would inhibit the degradation efficiency of Fe-Cu@SiO2/O3. Acidic sites, oxygen vacancies and the Fe-Cu(I/II) electron transfer were responsible for ozone decomposition and ·OH generation. SA mineralization proceeded through the ·OH mechanism. Moreover, SA mineralization in O3 and Fe-Cu@SiO2/O3 both exhibited a two-stage pseudo first-order kinetics (stage I: 0-45 min; stage II: 45-120 min). The degradation intermediates were detected to investigate the reaction pathway. ORP and EEM were used to monitor the degradation process. Great difference was found for carboxylic acids accumulation in O3 and Fe-Cu@SiO2/O3. The accelerated removal of oxalic acid and humic acid-like intermediates were responsible for the two-stage pseudo first-order kinetics.
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Affiliation(s)
- Weirui Chen
- Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
| | - Yixiang Bao
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory of Emerging Organic Contaminants Control (BKLEOCC), School of Environment, Tsinghua University, Beijing, 100084, China
| | - Xukai Li
- Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
| | - Jun Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory of Emerging Organic Contaminants Control (BKLEOCC), School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Yiming Tang
- Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
| | - Laisheng Li
- Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China.
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29
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Chi H, Wan J, Ma Y, Wang Y, Ding S, Li X. Ferrous metal-organic frameworks with stronger coordinatively unsaturated metal sites for persulfate activation to effectively degrade dibutyl phthalate in wastewater. JOURNAL OF HAZARDOUS MATERIALS 2019; 377:163-171. [PMID: 31158585 DOI: 10.1016/j.jhazmat.2019.05.081] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/24/2019] [Accepted: 05/26/2019] [Indexed: 05/27/2023]
Abstract
In the advanced oxidation system (AOPs) of persulfate (PS) activated by iron-based metal-organic frameworks (MOFs), aim at solving the problem on the treatment difficulty of wastewater with low concentration persistent organic pollutants (POPs), a new type of ferrous metal-organic frameworks (Fe(Ⅱ)-MOFs) with stronger coordinatively unsaturated metal sites (CUS) was successfully synthesized by different methods. The catalytic performance of Fe(Ⅱ)-MOFs was were obtained by the experiment of degrading dibutyl phthalate (DBP) through persulfate activation. It was found that the degradation efficiency of 0.018 mmol L-1 DBP was 86.73% under the conditions of 0.40 g L-1 and 2.70 mmol L-1 persulfate at a wide pH range. At the same time, the crystal structure and surface morphology of Fe(Ⅱ)-MOFs did not change significantly after reaction and it could still maintain the removal rate of 75.44% of the target pollutants in the fifth cycle. Furthermore, in the consideration of iron valence state of MOFs before and after reaction, and combined with the analysis of electrochemical properties, the possible mechanism of PS activation was proposed, namely the metastable electron layer inside ferrous ions produced the internal power to accelerate the electron transfer in CUS, leading to improve the activity of the catalyst.
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Affiliation(s)
- Haiyuan Chi
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, 510006, China.
| | - Jinquan Wan
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, 510006, China.
| | - Yongwen Ma
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, 510006, China.
| | - Yan Wang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou, 510006, China.
| | - Su Ding
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
| | - Xitong Li
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
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30
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Ding F, Xie Y, Wu T, Liu N. Influence of chloride ions on organic contaminants decolorization through the Fe 0-activated persulfate oxidation process: efficiency and intermediates. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:563-574. [PMID: 31596267 DOI: 10.2166/wst.2019.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study was conducted to evaluate the influence of chloride ions (Cl-) on organic contaminants decolorization by the Fe0-activated persulfate process (PS/Fe0), as well as the generation of transformation products. Orange II (OII) was chosen as the target pollution. The results indicated that Cl- influenced the OII decolorization by PS/Fe0 system, resulting in the generation of chlorine-containing by-products. OII containing Cl- solution can be efficiently decolorized by PS/Fe0 process, and the decolorization efficiencies changed depending on Cl- concentration due to the reaction between Cl- and sulfate radicals (SO4 -•). The operating cost for 94% color and 64% chemical oxygen demand (COD) removal of the OII dye was estimated at 0.73 USD/m3. The chlorine-containing by-products, such as chlorobenzene, 3,5-dichloro-benzene-1,2-diol, and 2,3-dichloro-2,3-dihydro-1,4-naphthoquinone, were generated during the reaction. The results further indicated that increasing both PS concentration and temperature enhanced OII decolorization and reduced the generation of chlorine-containing intermediates. The addition of ultrasound can further decrease the generation of chlorine-containing intermediates under high-temperature conditions. The proposed pathways of decolorization of OII containing Cl- also indicated that SO4 -• dominated the OII degradation, while the presence of Cl- led to the generation of chlorine-containing intermediates.
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Affiliation(s)
- Feng Ding
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China E-mail: ; School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China
| | - Yong Xie
- School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China
| | - Tengyan Wu
- School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Na Liu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China E-mail:
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