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Zou R, Yang W, Rezaei B, Tang K, Guo K, Zhang P, Keller SS, Andersen HR, Zhang Y. Activation of peracetic acid by electrodes using biogenic electrons: A novel energy- and catalyst-free process to eliminate pharmaceuticals. WATER RESEARCH 2024; 261:122065. [PMID: 39002421 DOI: 10.1016/j.watres.2024.122065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 06/22/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
Peracetic acid (PAA) has received increasing attention as an alternative oxidant for wastewater treatment. However, existing processes for PAA activation to generate reactive species typically require external energy input (e.g., electrically and UV-mediated activation) or catalysts (e.g., Co2+), inevitably increasing treatment costs or introducing potential new contaminants that necessitate additional removal. In this work, we developed a catalyst-free, self-sustaining bioelectrochemical approach within a two-chamber bioelectrochemical system (BES), where a cathode electrode in-situ activates PAA using renewable biogenic electrons generated by anodic exoelectrogens (e.g., Geobacter) degrading biodegradable organic matter (e.g., acetic acid) in wastewater at the anode. This innovative BES-PAA technique achieved 98 % and 81 % removal of 2 µM sulfamethoxazole (SMX) in two hours at pH 2 (cation exchange membrane) and pH 6 (bipolar membrane) using 100 μM PAA without external voltage. Mechanistic studies, including radical quenching, molecular probe validation, electron spin resonance (ESR) experiments, and density functional theory (DFT) calculations, revealed that SMX degradation was driven by reactive species generated via biogenic electron-mediated OO cleavage of PAA, with CH3C(O)OO• contributing 68.1 %, •OH of 18.4 %, and CH3C(O)O• of 9.4 %, where initial formation of •OH and CH3C(O)O• rapidly reacts with PAA to produce CH3C(O)OO•. The presence of common water constituents such as anions (e.g., Cl-, NO3-, and H2PO4-) and humic acid (HA) significantly hinders SMX removal via the BES-PAA technique, whereas CO32- and HCO3- ions have a comparatively minor impact. Additionally, the study investigated the removal of various pharmaceuticals present in secondary treated municipal wastewater, attributing differences in removal efficiency to the selective action of CH3C(O)OO•. This research demonstrates a novel PAA activation method that is ecologically benign, inexpensive, and capable of overcoming catalyst deactivation and secondary pollution issues.
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Affiliation(s)
- Rusen Zou
- Department of Environmental & Ressource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | - Wenqiang Yang
- Department of Physics, Technical University of Denmark, Lyngby, DK 2800, Denmark
| | - Babak Rezaei
- National Centre for Nano Fabrication and Characterization, DTU Nanolab, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
| | - Kai Tang
- Department of Environmental & Ressource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | - Kuangxin Guo
- Department of Environmental & Ressource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | - Pingping Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Stephan Sylvest Keller
- National Centre for Nano Fabrication and Characterization, DTU Nanolab, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
| | - Henrik Rasmus Andersen
- Department of Environmental & Ressource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | - Yifeng Zhang
- Department of Environmental & Ressource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark.
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2
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Deng S, Yang Z, Yu X, Li M, Cao H. The reactivity of organic radicals in the performic, peracetic, perpropionic acids-based advanced oxidation process: A case study of sulfamethoxazole. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135033. [PMID: 38941837 DOI: 10.1016/j.jhazmat.2024.135033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/13/2024] [Accepted: 06/23/2024] [Indexed: 06/30/2024]
Abstract
Advanced oxidation processes (AOPs) based on peracetic acid (PAA) displayed great potential in removing emerging contaminants by generating HO• and organic radicals. Performic and perpropionic acids (PFA and PPA) also act as disinfectants, but their application potential has not been investigated yet. Here, we investigated the degradation mechanism and kinetics of sulfamethoxazole (SMX) by HO•, RC(O)O• species (including HC(O)O•, CH3C(O)O• and CH3CH2C(O)O•) and RC(O)OO• species (including HC(O)OO•, CH3C(O)OO• and CH3CH2C(O)OO•). The results show that the calculated reaction rate constants of SMX follow the order of HC(O)O• > CH3C(O)O• > CH3CH2C(O)O• > HO• > HC(O)OO• > CH3C(O)OO• > CH3CH2C(O)OO•. The reactivity towards SMX is strongly correlated with the redox potentials of reactive radicals. Hence, the RCOO• species play dominant roles in the purification of SMX in PFA/PAA/PPA-based AOPs. The degradation of SMX mainly proceeds via addition at the benzene ring, the hydrogen abstraction from the -NH2 group as well as the single electron transfer reaction. This study highlights the fundamental aspects of PFA, PAA, and PPA in the purification of sulfamethoxazole and enhances the role of organic radicals in the AOPs based on organic peracetic acids.
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Affiliation(s)
- Siqi Deng
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao, China
| | - Zhengqiang Yang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao, China
| | - Xinyi Yu
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao, China
| | - Mingxue Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Haijie Cao
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao, China.
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3
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Song Y, Chen R, Li S, Yu S, Ni X, Fang M, Xie H. Enhancement of Peroxydisulfate Activation for Complete Degradation of Refractory Tetracycline by 3D Self-Supported MoS 2/MXene Nanocomplex. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:786. [PMID: 38727380 PMCID: PMC11085324 DOI: 10.3390/nano14090786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
Antibiotic abuse, particularly the excessive use of tetracycline (TC), a drug with significant environmental risk, has gravely harmed natural water bodies and even posed danger to human health. In this study, a three-dimensional self-supported MoS2/MXene nanohybrid with an expanded layer spacing was synthesized via a facile one-step hydrothermal method and used to activate peroxydisulfate (PDS) for the complete degradation of TC. The results showed that a stronger •OH signal was detected in the aqueous solution containing MoS2/MXene, demonstrating a superior PDS activation effect compared to MoS2 or Ti3C2TX MXene alone. Under the conditions of a catalyst dosage of 0.4 g/L, a PDS concentration of 0.4 mM, and pH = 5.0, the MoS2/MXene/PDS system was able to fully eliminate TC within one hour, which was probably due to the presence of several reactive oxygen species (ROS) (•OH, SO4•-, and O2•-) in the system. The high TC degradation efficiency could be maintained under the influence of various interfering ions and after five cycles, indicating that MoS2/MXene has good anti-interference and reusability performance. Furthermore, the possible degradation pathways were proposed by combining liquid chromatography-mass spectrometry (LC-MS) data and other findings, and the mechanism of the MoS2/MXene/PDS system on the degradation process of TC was elucidated by deducing the possible mechanism of ROS generation in the reaction process. All of these findings suggest that the MoS2/MXene composite catalyst has strong antibiotic removal capabilities with a wide range of application prospects.
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Affiliation(s)
| | - Runhua Chen
- College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China; (Y.S.)
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4
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Guo X, Ong WM, Zhao HP, Lai CY. Enzyme-induced reactive oxygen species trigger oxidative degradation of sulfamethoxazole within a methanotrophic biofilm. WATER RESEARCH 2024; 253:121330. [PMID: 38387268 DOI: 10.1016/j.watres.2024.121330] [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: 11/06/2023] [Revised: 01/24/2024] [Accepted: 02/16/2024] [Indexed: 02/24/2024]
Abstract
Although microorganisms carrying copper-containing membrane-bound monooxygenase (CuMMOs), such as particulate methane monooxygenase (pMMO) and ammonia monooxygenase (AMO), have been extensively documented for their capability to degrade organic micropollutants (OMPs), the underlying reactive mechanism remains elusive. In this study, we for the first time demonstrate biogenic reactive oxygen species (ROS) play important roles in the degradation of sulfamethoxazole (SMX), a representative OMP, within a methane-fed biofilm. Highly-efficient and consistent SMX biodegradation was achieved in a CH4-based membrane biofilm reactor (MBfR), manifesting a remarkable SMX removal rate of 1210.6 ± 39.0 μg·L-1·d-1. Enzyme inhibition and ROS clearance experiments confirmed the significant contribution of ROS, which were generated through the catalytic reaction of pMMO and AMO enzymes, in facilitating SMX degradation. Through a combination of density functional theory (DFT) calculations, electron paramagnetic resonance (EPR) analysis, and transformation product detection, we elucidated that the ROS primarily targeted the aniline group in the SMX molecule, inducing the formation of aromatic radicals and its progressive mineralization. In contrast, the isoxazole-ring was not susceptible to electrophilic ROS attacks, leading to accumulation of 3-amino-5-methylisoxazole (3A5MI). Furthermore, microbiological analysis suggested Methylosarcina (a methanotroph) and Candidatus Nitrosotenuis (an ammonia-oxidizing archaea) collaborated as the SMX degraders, who carried highly conserved and expressed CuMMOs (pMMO and AMO) for ROS generation, thereby triggering the oxidative degradation of SMX. This study deciphers SMX biodegradation through a fresh perspective of free radical chemistry, and concurrently providing a theoretical framework for the advancement of environmental biotechnologies aimed at OMP removal.
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Affiliation(s)
- Xu Guo
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China, 310058
| | - Weng Mun Ong
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China, 310058
| | - He-Ping Zhao
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China, 310058
| | - Chun-Yu Lai
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China, 310058.
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5
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Wu E, Chen H, Tang L, Zeng L, Ji H, Zhu M. Molecular understanding on ultraviolet photolytic degradation of cyano liquid crystal monomers. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133033. [PMID: 38006861 DOI: 10.1016/j.jhazmat.2023.133033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
Cyano liquid crystal monomers (LCMs) are proposed as emerging chemical pollutants with persistent, bioaccumulative, and toxic properties. Herein, five cyano LCMs, including 4-cyano-4'-ethylbiphenyl (2CB), 4-Butyl-4'-cyanobiphenyl (4CB), 4-cyano-4'-ethoxybiphenyl (2OCB), 4-(trans-4-Ethylcyclohexyl)benzonitrile (2CHB) and 4-(trans-4-Vinylcyclohexyl)benzonitrile (2eCHB), were selected to investigate the reaction kinetics and excited state characteristic variations with their molecular structures by ultraviolet (UV) photolysis. Theoretical calculations reveal that the benzene ring, ethoxy and double bond can deeply alter the electron distribution of cyano LCMs. This will affect the exciton separation ability, excitation properties and active sites to electrophilic attack, causing the distinction in photolysis efficiency. Due to the effective charge separation during local excitation (LE) process and the property of being most susceptible to electrophilic attack by 1O2 and O2•-, 2eCHB with double bond exhibits the largest degradation rate. Conversely, the weakest exciton separation of 2OCB with ethoxy during charge transfer (CT) process limits its subsequent sensitized photolysis process. The molecular orbital and fragment contributions to holes and electrons further deepen the understanding of the excited states charge transfer. This study confirmed that the intrinsic molecular structure, chemical nature and existing sites directly defined the excitation and decomposition activity in the UV photolysis of cyano LCMs.
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Affiliation(s)
- Enya Wu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China
| | - Hanchun Chen
- Eco-environment and Resource Efficiency Research Laboratory, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China
| | - Lingfang Tang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China
| | - Lixi Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China
| | - Haodong Ji
- Eco-environment and Resource Efficiency Research Laboratory, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China.
| | - Mingshan Zhu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China.
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6
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Zhang H, Chen L, Du P, Li F, Liu W. Unraveling Different Reaction Characteristics of Alkoxy Radicals in a Co(II)-Activated Peracetic Acid System Based on Dynamic Analysis of Electron Distribution. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 38315813 DOI: 10.1021/acs.est.3c07977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Peracetic acid (PAA)-based advanced oxidation processes (AOPs) have shown broad application prospects in organic wastewater treatment. Alkoxy radicals including CH3COO• and CH3COOO• are primary reactive species in PAA-AOP systems; however, their reaction mechanism on attacking organic pollutants still remains controversial. In this study, a Co(II)/PAA homogeneous AOP system at neutral pH was constructed to generate these two alkoxy radicals, and their different reaction mechanisms with a typical emerging contaminant (sulfacetamide) were explored. Dynamic electron distribution analysis was applied to deeply reveal the radical-meditated reaction mechanism based on molecular orbital analysis. Results indicate that hydrogen atom abstraction is the most favorable route for both CH3COO• and CH3COOO• attacking sulfacetamide. However, both radicals cannot react with sulfacetamide via the radical adduct formation route. Interestingly, the single-electron transfer reaction is only favorable for CH3COO• due to its lower ESUMO. In comparison, CH3COOO• can react with sulfacetamide via a similar radical self-sacrificing bimolecular nucleophilic substitution (SN2) route owing to its high ESOMO and easy escape of unpaired electrons from n orbitals of O atoms in the peroxy bond. These findings can significantly improve the knowledge of reactivity of CH3COO• and CH3COOO• on attacking organic pollutants at the molecular orbital level.
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Affiliation(s)
- Huixuan Zhang
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P.R. China
| | - Long Chen
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P.R. China
| | - Penghui Du
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P.R. China
| | - Fan Li
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P.R. China
- The Key Laboratory of Water and Sediment Sciences (Ministry of Education), Peking University, Beijing 100871, P.R. China
| | - Wen Liu
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P.R. China
- The Key Laboratory of Water and Sediment Sciences (Ministry of Education), Peking University, Beijing 100871, P.R. China
- International Joint Laboratory for Regional Pollution Control (Ministry of Education), Peking University, Beijing 100871, P.R. China
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7
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Gayathri PV, Rayaroth MP, Aravindakumar CT, Pillai D, Joseph S. SUNLIGHT-INDUCED decontamination of water from emerging pharmaceutical pollutants using ZnO nanoparticles. CHEMOSPHERE 2023; 343:140265. [PMID: 37758074 DOI: 10.1016/j.chemosphere.2023.140265] [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: 05/28/2023] [Revised: 09/06/2023] [Accepted: 09/22/2023] [Indexed: 09/30/2023]
Abstract
A new class of environmental pollutants that have become a significant concern for the entire world's population over the last few decades are pharmaceutical contaminants due to the potential risks they pose to the environment and human health. An investigation on the photocatalytic degradation of four different model pharmaceutical contaminants: Tetracycline (TCT), Sulfamethoxazole (SMX), Chloroquine (CLQ), and Diclofenac (DCF) has been carried out using ZnO nanoparticles as the photocatalyst, and sunlight as the source of energy in a batch photocatalytic reactor. This process resulted in the degradation of about 51% for TCT, 65% for SMX, 61% for CLQ, and 55% for DCF within 30 min of solar irradiation. Complete degradation and COD reduction were achieved after a prolonged irradiation. The slow decay is attributed to the evolution of the intermediate compounds, which were identified using the liquid chromatography quadrupole time-of-flight mass spectrometry (LC-Q-TOF-MS) method. The possible intermediates formed were identified for each molecule (i.e., TCT having 6 products, SMX, having 4 products, DCF having 8 products and CLQ having 8 products), and the mechanism for each pollutant is proposed. The effect on distinct operational parameters, like catalyst loading, and pH, environmentally relevant parameters such as ionic effect, and multiple contaminants system were investigated. It was found that the anions such as Cl-, SO42-, CO32-, HCO3-, NO3-, F-, Br-, and I-both individually as well as in combination had no effect on the degradation except for SMX. For multiple component systems, when two pollutants are mixed, each pollutant affects the degradation of the other and in the case of CLQ/TCT system, CLQ inhibits the degradation of TCT drastically. The study demonstrates that ZnO is an effective and convenient option for photocatalytic decontamination of water sources contaminated with a variety of pharmaceutical contaminants.
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Affiliation(s)
- Padinchare Veettil Gayathri
- Department of Climate Variability and Aquatic Ecosystems, Kerala University of Fisheries and Ocean Studies, Puduveypu P O, Kochi, 682508, India; Department of Chemistry, St. Albert's College, Kochi, 682018, India
| | - Manoj P Rayaroth
- Bigelow Laboratory for Ocean Sciences, 60 Bigelow Dr, East Boothbay, ME, 04544, USA
| | - C T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, 686560, India
| | - Devika Pillai
- Directorate of Research, Kerala University of Fisheries and Ocean Studies, Panangad P O, Kochi, 682506, India
| | - Shijo Joseph
- Department of Climate Variability and Aquatic Ecosystems, Kerala University of Fisheries and Ocean Studies, Puduveypu P O, Kochi, 682508, India; Centre for Climate Resilience and Environment Management, Kerala University of Fisheries and Ocean Studies, Puduveypu P O, Kochi, 682508, India.
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8
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do Nascimento CPG, Costa MSMA, Freire JMA, da Silva LTV, Coutinho LP, Monteiro NKV, Zampieri DDS, Oliveira JT, do Nascimento RF, de Carvalho IMM, Becker H, Longhinotti E. Degradation of xanthene-based dyes by photoactivated persulfate: experimental and computational studies. Photochem Photobiol Sci 2023:10.1007/s43630-023-00480-8. [PMID: 37740886 DOI: 10.1007/s43630-023-00480-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 09/04/2023] [Indexed: 09/25/2023]
Abstract
Dyes are naked-eye detectable even at low concentration levels and can cause environmental damage when released into aquatic effluents; therefore, methods for removing the residual color from the aquatic media are always a current issue. In this paper, degradation of three xanthene dyes, Rhodamine B, Eosin Y, and Sodium Fluorescein, using photoactivated persulfate was evaluated at pH 3.0 and 11.0. The dyes' degradation followed a pseudo-first-order reaction. Although the solution is completely decolorized in 40 min at pH 3.0, achieving 75% mineralization requires a longer reaction time of 180 min. Furthermore, GC-MS analyses indicate that degradation products are mainly low-molecular weight acids, CO2 and H2O. Experiments carried out in dark and under UV irradiation showed substantial contribution of radical (SO4•- and HO•) and non-radical pathways to dye degradation in both pH. Additionally, to get more insights into the degradation pathways, HOMO-LUMO energy gaps of the dyes were calculated by DFT using MPW1PW91/MidiXo level of theory and, in general, the lower the bandgap, the faster the degradation. Fukui functions revealed that the preferential sites to radical attack were the xanthene or the benzoate portion depending on the pH, wherein attack to the xanthene ring provided better kinetic and mineralization results.
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Affiliation(s)
- Carlos Pedro G do Nascimento
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Mateus S M A Costa
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Jessica M A Freire
- Seara da Ciência, Universidade Federal do Ceará, Fortaleza, CE, 60455-320, Brazil
| | - Luiz Thiago V da Silva
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Lucas P Coutinho
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Norberto K V Monteiro
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil.
| | - Dávila de S Zampieri
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Juliene T Oliveira
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Ronaldo F do Nascimento
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Idalina M M de Carvalho
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Helena Becker
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil
| | - Elisane Longhinotti
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Fortaleza, CE, 60455-900, Brazil.
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9
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Li N, Ye J, Dai H, Shao P, Liang L, Kong L, Yan B, Chen G, Duan X. A critical review on correlating active sites, oxidative species and degradation routes with persulfate-based antibiotics oxidation. WATER RESEARCH 2023; 235:119926. [PMID: 37004307 DOI: 10.1016/j.watres.2023.119926] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/13/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
At present, numerous heterogeneous catalysts have been synthesized to activate persulfate (PS) and produce various reactive species for antibiotic degradation from water. However, the systematic summary of the correlation among catalyst active sites, PS activation pathway and pollutant degradation has not been reported. This review summarized the effect of metal-based, carbon-based and metal-carbon composite catalysts on the degradation of antibiotics by activating PS. Metal and non-metal sites are conducive to inducing different oxidation pathways (SO4•-, •OH radical oxidation and 1O2 oxidation, mediated electron transfer, surface-bound reactive complexes and high-valent metal oxidation). SO4•- and •OH are easy to attack CH, S-N, CN bonds, CC double bonds and amino groups in antibiotics. 1O2 is more selective to the structure of the aniline ring and amino group, and also to attacking CS, CN and CH bonds. Surface-bound active species can cleave CC, SN, CS and CN bonds. Other non-radical pathways may also induce different antibiotic degradation routes due to differences in oxidation potential and electronic properties. This critical review clarified the functions of active sites in producing different reactive species for selective oxidation of antibiotics via featured pathways. The outcomes will provide valuable guidance of oriented-regulation of active sites in heterogeneous catalysts to produce on-demand reactive species toward high-efficiency removing antibiotics from water.
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Affiliation(s)
- Ning Li
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, 300072 Tianjin, China
| | - Jingya Ye
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, 300072 Tianjin, China
| | - Haoxi Dai
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, 300072 Tianjin, China
| | - Penghui Shao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, 330063 Nanchang, China
| | - Lan Liang
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, 300072 Tianjin, China
| | - Lingchao Kong
- School of Environmental Science & Engineering, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, 300072 Tianjin, China.
| | - Guanyi Chen
- School of Mechanical Engineering, Tianjin University of Commerce, 300134 Tianjin, China.
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, 5005 Adelaide, SA, Australia
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Wang B, Sun X, Lu F, Shen Y, Xu N, Liu Y, Huang Y, Hu Z. In-situ formed nanoscale Fe 0 for fenton-like oxidation of thermosetting unsaturated polyester resin composites: Nondestructively recycle carbon fiber. CHEMOSPHERE 2022; 307:135780. [PMID: 35870608 DOI: 10.1016/j.chemosphere.2022.135780] [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: 12/20/2021] [Revised: 06/17/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
Thermosetting unsaturated polyester resin (UPR) composites were found widespread industrial applications. However, the numerous stable carbon-carbon bonds in cross-linked networks made them intractable for degradation, causing the large-scale composite wastes. Here a nanoscale Fe0 catalyst in-situ forming strategy was exploited to nondestructively recycle carbon fiber (CF) from UPR composites via Fenton-like reaction. The nano-Fe0 catalyst employed in this strategy activated H2O2 for removing UPR, featuring mild conditions and efficient degradation ability. Aiming at facile growth of the catalyst, a porous UPR was achieved by the hydrolysis of alkalic system. The nanoscale Fe0 catalyst was subsequently formed in-situ on the surface of hydrolyzed resin by borohydride reduction. Benefiting from fast mass transfer, the in-situ grown nano-Fe0 showed more efficient degradation ability than added nano-Fe0 or Fe2+ catalyst during Fenton-like reaction. The experiments indicated that hydrolyzed resin could be degraded more than 90% within 80 min, 80 °C. GC-MS, FT-IR analysis and Density functional theory (DFT) calculation were conducted to explained the fracture processes of carbon skeleton in hydrolyzed resin. Especially, a remarkable recovery process of CF from composites was observed, with a 100 percent elimination of resin. The recycled CF cloth exhibited a 99% strength retention and maintained the textile structure, microtopography, chemical structure, resulting in the nondestructive reclaim of CF. This in-situ formed nanoscale Fe0 catalytic degradation strategy may provide a promising practical application for nondestructively recycle CF from UPR composites.
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Affiliation(s)
- Baolong Wang
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Xueying Sun
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Fei Lu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Yibo Shen
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Ningdi Xu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Yingying Liu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Yudong Huang
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Zhen Hu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China.
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11
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Wang J, Qin J, Liu B, Song S. Reaction mechanisms and toxicity evolution of Sulfamethoxazole degradation by CoFe-N doped C as Electro-Fenton cathode. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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12
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Chen Y, Vu HC, Miller CJ, Garg S, Pan D, Waite TD. Comparative Experimental and Computational Studies of Hydroxyl and Sulfate Radical-Mediated Degradation of Simple and Complex Organic Substrates. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:8819-8832. [PMID: 35549159 DOI: 10.1021/acs.est.2c00686] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Persulfate (PS)-based advanced oxidation processes (AOPs) have been promoted as alternatives to H2O2-based AOPs. To gauge the potential of this technology, the PS/Fe(II) and Fenton (H2O2/Fe(II)) processes were comparatively evaluated using formate as a simple target compound and nanofiltration concentrate from a municipal wastewater treatment plant as a complex suite of contaminants with the aid of kinetic modeling. In terms of the short-term rate and extent of mineralization of formate and the nanofiltration concentrate, PS/Fe(II) is less effective due to slow Fe(II)/Fe(III) cycling attributable to the scavenging of superoxide by PS. However, in the concentrate treatment, PS/Fe(II) provided a sustained removal of total organic carbon (TOC), with ∼81% removed after 7 days with SO4•- consistently produced via homolysis of the long-life PS. In comparison, H2O2/Fe(II) exhibited limited TOC removal over ∼57% after 10 h due to the futile consumption of H2O2 by HO•. PS/Fe(II) also offers better performance at transforming humic-like moieties to more biodegradable compounds as a result of chlorine radicals formed by the reaction of SO4•- with the matrix constituents present in the concentrate. The application of PS/Fe(II) is, however, subject to the limitations of slow oxidation of organic contaminants, release of sulfate, and formation of chlorinated byproducts.
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Affiliation(s)
- Yufan Chen
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Huong Chi Vu
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Christopher J Miller
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Shikha Garg
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Dai Pan
- Beijing Originwater Technology Co., Ltd, Beijing 102206, China
| | - T David Waite
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
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13
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Comparison of hydroxyl-radical-based advanced oxidation processes with sulfate radical-based advanced oxidation processes. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2022.100830] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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High 1T phase and sulfur vacancies in C-MoS2@Fe induced by ascorbic acid for synergistically enhanced contaminants degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120511] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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MFO@NZVI/hydrogel for sulfasalazine degradation: Performance, mechanism and degradation pathway. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Ye C, Ma X, Deng J, Li X, Li Q, Dietrich AM. Degradation of saccharin by UV/H 2O 2 and UV/PS processes: A comparative study. CHEMOSPHERE 2022; 288:132337. [PMID: 34592214 DOI: 10.1016/j.chemosphere.2021.132337] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/09/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
Artificial sweeteners have raised emerging concern due to their potential threats to human health, which were frequently detected in aquatic environment with median concentrations. Although current researches have widely reported that ultraviolet light-activated persulfate process (UV/PS) was superior to UV/H2O2 process for the degradation of refractory organic contaminants, UV/H2O2 process presented a more satisfactory saccharin (SAC) removal efficiency than UV/PS process, completely degraded 20 mg/L SAC within 45 min. Hence, quenching and probe experiments were employed to investigate the difference between hydroxyl radical (OH)- and sulfate radical (SO4-)-mediated oxidation mechanisms, which revealed the higher reactivity of OH (1.37-1.56 × 109 M-1 s-1) toward SAC than SO4- (3.84-4.13 × 108 M-1 s-1). A combination of density functional theory calculation and transformation products identification disclosed that OH preferred to attack the benzene ring of SAC via hydrogen atom transfer pathway, whereas SO4- oxidation was conducive to the cleavage of -C-NH2 bond. Increasing oxidant concentration significantly accelerated SAC degradation in both processes, while UV/H2O2 process consumed lower electrical energy with respect to UV/PS process. Additionally, UV/H2O2 system presented excellent adaptability and stability under various water matrices parameters (e.g. pH, anions and humic acid). While both UV/H2O2 and UV/PS processes promoted the generation of disinfection by-products (DBPs) during subsequent chlorination, and prolonging pretreatment time posed positive effect on reducing the formation of DBPs. Overall, the results clearly demonstrate the high efficiency, economy and practicality of UV/H2O2 process in the remediation of SAC-contaminated water.
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Affiliation(s)
- Cheng Ye
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou, 310023, China
| | - Xiaoyan Ma
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou, 310023, China.
| | - Jing Deng
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou, 310023, China
| | - Xueyan Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Qingsong Li
- Water Resources and Environmental Institute, Xiamen University of Technology, Xiamen, 361005, China
| | - Andrea M Dietrich
- Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
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17
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Hafeez MA, Hong SJ, Jeon J, Lee J, Singh BK, Hyatt NC, Walling SA, Heo J, Um W. Co 2+/PMS based sulfate-radical treatment for effective mineralization of spent ion exchange resin. CHEMOSPHERE 2022; 287:132351. [PMID: 34592215 DOI: 10.1016/j.chemosphere.2021.132351] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/14/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Sulfate radical advance oxidation processes (SR-AOPs) have attracted a greater attention as a suitable alternative of the hydroxyl radical based advance oxidation process (HR-AOPs). In this study, for the first time we report liquid phase mineralization of nuclear grade cationic IRN-77 resin in Co2+/peroxymonosulfate (PMS) based SR-AOPs. After the dissolution of cationic IRN-77 resin, 30 volatile and 15 semi-volatile organic compounds were analyzed/detected using non-targeted GC-MS analysis. The optimal reaction parameters for the highest chemical oxygen demand (COD) removal (%) of IRN-77 resin were determined, and the initial pH, PMS dosage, and reaction temperature were found to be the most influential parameters for the resin degradation. We successfully achieved ∼90% COD removal (1000 mg/L; 1000 ppm) of dissolved spent resin for SR-AOPs by optimizing the reaction parameters as initial pH = 9, Co2+ = 4 mM (catalyst), PMS = 60 mM (as oxidant) at 60 °C temperature for 60 min reaction. The electron spin resonance spectroscopy (ESR) spectra confirmed the presence of SO4∙- and OH∙ as main reactive species in the Co2+/PMS resin system. In addition, Fourier transform infrared spectroscopy (FT-IR) analyses were used for structural characterization of solid and liquid phase resin samples. We believe that this work will offer a robust approach for the effective treatment of spent resin generated from nuclear industry.
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Affiliation(s)
- Muhammad Aamir Hafeez
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Seok Ju Hong
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Junsung Jeon
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Juhyeok Lee
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Bhupendra Kumar Singh
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea; Nuclear Environmental Technology Institute (NETI), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Neil C Hyatt
- Immobilisation Science Laboratory, Department of Materials Science & Engineering, The University of Sheffield, Sheffield, S1 3JD, United Kingdom
| | - Samuel A Walling
- Immobilisation Science Laboratory, Department of Materials Science & Engineering, The University of Sheffield, Sheffield, S1 3JD, United Kingdom
| | - Jong Heo
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Wooyong Um
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea; Division of Environmental Science and Engineering (DESE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea; Nuclear Environmental Technology Institute (NETI), Pohang, Gyeongbuk, 37673, Republic of Korea.
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18
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Huang Y, Yang J. Degradation of sulfamethoxazole by the heterogeneous Fenton-like reaction between gallic acid and ferrihydrite. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112847. [PMID: 34601269 DOI: 10.1016/j.ecoenv.2021.112847] [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: 07/12/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
In soils, the Fenton-like reaction can be initiated when phenolic acids (PCs) existed simultaneously with iron oxides and dissolved O2, which would have great impact on transformation of organic pollutants. This study probed the mechanism of the Fenton-like reaction that occurs in a heterogeneous system containing ferrihydrite (Fh) and gallic acid (GA), and evaluated its performance in sulfamethoxazole (SMX) degradation. In the absence of dissolved O2, only reductive dissolution of Fh by GA occurred. It was further showed that Fh is capable of catalyzing the oxidation of GA by O2, in which the Fenton-like reaction was involved with the formation of reactive oxygen species (ROS) (semiquinone free radicals, superoxide, singlet oxygen, hydroxyl radical and H2O2) together with the adsorbed and aqueous Fe(II). At pH 4.0, this Fenton-like reaction could lead to SMX degradation at a rate of 38.2% and 65.6% when GA concentration were set at 0.1 and 0.2 mM, respectively. Elevating pH inhibited SMX degradation process. Citric acid had no effect on SMX degradation, while ascorbic acid showed a promotive effect. Moreover, HPLC-MS showed the presence of 12 intermediate products, and the proposed pathways for SMX degradation included cleavage, demethylation, oxidation and electrophilic substitution. This work could enhance our understanding on how the abiotic soil Fenton-like reaction controls the fate of SMX in soil environments.
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Affiliation(s)
- Yu Huang
- College of Resources & Environmental Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Jiewen Yang
- College of Resources & Environmental Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
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19
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Theoretical Calculation on the Reaction Mechanisms, Kinetics and Toxicity of Acetaminophen Degradation Initiated by Hydroxyl and Sulfate Radicals in the Aqueous Phase. TOXICS 2021; 9:toxics9100234. [PMID: 34678930 PMCID: PMC8537891 DOI: 10.3390/toxics9100234] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 11/30/2022]
Abstract
The •OH and SO4•− play a vital role on degrading pharmaceutical contaminants in water. In this paper, theoretical calculations have been used to discuss the degradation mechanisms, kinetics and ecotoxicity of acetaminophen (AAP) initiated by •OH and SO4•−. Two significant reaction mechanisms of radical adduct formation (RAF) and formal hydrogen atom transfer (FHAT) were investigated deeply. The results showed that the RAF takes precedence over FHAT in both •OH and SO4•− with AAP reactions. The whole and branched rate constants were calculated in a suitable temperature range of 198–338 K and 1 atm by using the KiSThelP program. At 298 K and 1 atm, the total rate constants of •OH and SO4•− with AAP were 3.23 × 109 M−1 s−1 and 4.60 × 1010 M−1 s−1, respectively, considering the diffusion-limited effect. The chronic toxicity showed that the main degradation intermediates were harmless to three aquatic organism, namely, fish, daphnia, and green algae. From point of view of the acute toxicity, some degradation intermediates were still at harmful or toxic level. These results provide theoretical guidance on the practical degradation of AAP in the water.
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20
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Zhang P, Yang Y, Duan X, Liu Y, Wang S. Density Functional Theory Calculations for Insight into the Heterocatalyst Reactivity and Mechanism in Persulfate-Based Advanced Oxidation Reactions. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03099] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Panpan Zhang
- School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Yangyang Yang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Yunjian Liu
- School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
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21
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Gao X, Niu J, Wang Y, Ji Y, Zhang Y. Solar photocatalytic abatement of tetracycline over phosphate oxoanion decorated Bi 2WO 6/polyimide composites. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123860. [PMID: 33264935 DOI: 10.1016/j.jhazmat.2020.123860] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/07/2020] [Accepted: 08/27/2020] [Indexed: 06/12/2023]
Abstract
Environmental-friendly solar photocatalytic technology is attracting great attention in the field of pollution control. In this work, novel PO43--Bi2WO6/PI photocatalyst achieved high degradation efficiency for tetracycline degradation in simulated solar light (1.6 times kinetic constants of Bi2WO6). The photocatalyst could produce more oxygen vacancies as well as more active species O2- and OH, and exhibited high mineralization ability, good stability and recyclability simultaneously. After 4 cycles of degradation experiments, its degradation efficiency was only reduced by 8.6 %. Tetracycline molecules gradually became small molecules under the attack of active species. The tetracycline degradation was highly pH-dependent and enhanced with the increase of solution pH. The water quality parameters humic acid and Cl- presented the inhibitory effect, while HCO3- can accelerate the tetracycline degradation. The degradation of tetracycline by PO43--Bi2WO6/PI conformed to the Z-scheme photocatalysis mechanism, which could effectively broaden the absorption of solar light, improve the separation and transfer of photogenerated electron-hole pairs and extend the lifespan of the photocatalyst.
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Affiliation(s)
- Xin Gao
- School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou 510006, China
| | - Jing Niu
- School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou 510006, China
| | - Yifei Wang
- School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou 510006, China
| | - Yun Ji
- School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou 510006, China
| | - Yanlin Zhang
- School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou 510006, China; Guangdong Jiarong Environmental Protection & New Energy Co., Guangzhou 510725, China.
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22
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Pan F, Ji H, Du P, Huang T, Wang C, Liu W. Insights into catalytic activation of peroxymonosulfate for carbamazepine degradation by MnO 2 nanoparticles in-situ anchored titanate nanotubes: Mechanism, ecotoxicity and DFT study. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123779. [PMID: 33254790 DOI: 10.1016/j.jhazmat.2020.123779] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/30/2020] [Accepted: 08/17/2020] [Indexed: 06/12/2023]
Abstract
Developing efficient pharmaceuticals and personal care products (PPCPs) degradation technologies is of scientifical and practical importance to restrain their discharge into natural water environment. This study fabricated and applied a composite material of amorphous MnO2 nanoparticles in-situ anchored titanate nanotubes (AMnTi) to activate peroxymonosulfate (PMS) for efficient degradation and mineralization of carbamazepine (CBZ). The degradation pathway and toxicity evolution of CBZ during elimination were deeply evaluated through produced intermediates identification and theoretical calculations. AMnTi with a composition of (0.3MnO2)•(Na1.22H0.78Ti3O7) offered high activation efficiency of PMS, which exhibited 21- and 3-times degradation rate of CBZ compared with the pristine TNTs and MnO2, respectively. The high catalytic activity can be attributed to its unique structure, leading to a lattice shrinkage and small pores to confine the PMS molecule onto the interface. Therefore, efficient charge transfer and catalytic activation through MnOTi linkage occurred, and a MnTi cycle mediating catalytic PMS activation was found. Both hydroxyl and sulfate radicals played key roles in CBZ degradation. Theoretical calculations, i.e., density functional theory (DFT) and computational toxicity calculations, combined with intermediates identification revealed that CBZ degradation pathway was hydroxyl addition and NC cleavage. CBZ degradation in this system was also a toxicity-attenuation process.
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Affiliation(s)
- Fei Pan
- School of Environmental Engineering, Wuhan Textile University, Engineering Research Centre for Clean Production of textile Dyeing and Printing, Ministry of Education, Wuhan, 430073, PR China
| | - Haodong Ji
- College of Environmental Sciences and Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, PR China; The Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT), Peking University, Beijing, 100871, PR China
| | - Penghui Du
- College of Environmental Sciences and Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, PR China
| | - Taobo Huang
- College of Environmental Sciences and Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, PR China
| | - Chong Wang
- Key Laboratory of Mechanics on Disaster and Environment in Western China, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, 730000, PR China
| | - Wen Liu
- College of Environmental Sciences and Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, PR China; The Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT), Peking University, Beijing, 100871, PR China; Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin, 300350, PR China.
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