1
|
Li Q, Huang J, Lin L, Fan G. Regulating cobalt-nitrogen function centers via Cu incorporation enhances ciprofloxacin destruction through peroxymonosulfate activation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124683. [PMID: 39111527 DOI: 10.1016/j.envpol.2024.124683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/27/2024] [Accepted: 08/04/2024] [Indexed: 08/12/2024]
Abstract
Metal-nitrogen (M-N) coupling has shown promise as a catalytic active component for various reactions. However, the regulation of heterogeneous catalytic materials with M-N coupling for peroxymonosulfate (PMS) activation to enhance the degradation efficiency and reusability of antibiotics remains a challenge. In this study, an efficient modulation of M-N coupling was achieved through the incorporation of Cu into Co4N to form a Cu-Co4N composite with sea urchin-like morphology assembled by numerous nano-needles using hydrothermal and nitriding processes. This modulation led to enhanced PMS activation for ciprofloxacin (CIP) degradation. The Cu-Co4N/PMS system demonstrated exceptional removal efficiency with a degradation rate of 95.85% within 30 min and can be reused for five time without obvious loss of its initial activity. Additionally, the catalyst displayed a high capacity for degrading various challenging organic pollutants, as well as remarkable stability, resistance to interferences, and adaptability to pH changes. The synergistic effect between Co and Cu facilitated multiple redox cycles, resulting in the generation of reactive oxidized species. The primary active species involved in the catalytic degradation process included 1O2, SO4•-, O2•-, •OH, and e-, with 1O2 and SO4•- playing the most significant roles. The degradation pathways and toxicity of the intermediates for CIP were unveiled. This study offers valuable insights into the regulation of M-N centers for degrading antibiotics through PMS activation.
Collapse
Affiliation(s)
- Qiulin Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Jieling Huang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Lan Lin
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Guangyin Fan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China.
| |
Collapse
|
2
|
Wang M, Wu B, Zheng Q, Yang P, Hu J, Zheng S. Highly effective removal of 4-chloroaniline in water by nano zero-valent iron cooperated with microbial degradation. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134235. [PMID: 38608585 DOI: 10.1016/j.jhazmat.2024.134235] [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: 02/08/2024] [Revised: 03/28/2024] [Accepted: 04/06/2024] [Indexed: 04/14/2024]
Abstract
The misuse of aromatic amines like 4-chloroaniline (4-CA) has led to severe environmental and health issues. However, it's difficult to be utilized by microorganisms for degradation. Nano-zero-valent iron (nZVI) is a promising material for the remediation of chloroaniline pollution, however, the synergistic effect and mechanism of nZVI with microorganisms for the degradation of 4-CA are still unclear. This study investigated the potential of 4-CA removal by the synergistic system involving nZVI and 4-CA degrading microbial flora. The results indicate that the addition of nZVI significantly enhanced the bio-degradation rate of 4-CA from 43.13 % to 62.26 %. Under conditions involving 0.1 % nZVI addition at a 24-hour interval, pH maintained at 7, and glucose as an external carbon source, the microbial biomass, antioxidant enzymes, and dehydrogenase were significantly increased, and the optimal 4-CA degradation rate achieved 68.79 %. Additionally, gas chromatography-mass spectrometry (GC-MS) analysis of intermediates indicated that the addition of nZVI reduced compounds containing benzene rings and enhanced the dechlorination efficiency. The microbial community remained stable during the 4-CA degradation process. This study illustrates the potential of nZVI in co-microbial remediation of 4-CA compounds in the environment.
Collapse
Affiliation(s)
- MeiQi Wang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China
| | - Bin Wu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China.
| | - QingJuan Zheng
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China
| | - Peng Yang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China
| | - JunQi Hu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China
| | - Shuai Zheng
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China
| |
Collapse
|
3
|
Wu JH, Yang TH, Chen F, Yu HQ. Unexpected side reactions dominate the oxidative transformation of aromatic amines in the Co(II)/peracetic acid system. PNAS NEXUS 2024; 3:pgae040. [PMID: 38328784 PMCID: PMC10849606 DOI: 10.1093/pnasnexus/pgae040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/22/2024] [Indexed: 02/09/2024]
Abstract
Aromatic amines (AAs), ubiquitous in industrial applications, pose significant environmental hazards due to their resistance to conventional wastewater treatments. Peracetic acid (PAA)-based advanced oxidation processes (AOPs) have been proposed as effective strategies for addressing persistent AA contaminants. While the organic radicals generated in these systems are believed to be selective and highly oxidative, acetate residue complicates the evaluation of AA removal efficiency. In this work, we explored transformation pathways of AAs in a representative Co(II)-catalyzed PAA system, revealing five side reactions (i.e. nitrosation, nitration, coupling, dimerization, and acetylation) that yield 17 predominantly stable and toxic by-products. The dominant reactive species was demonstrated as Co-OOC(O)CH3, which hardly facilitated ring-opening reactions. Our findings highlight the potential risks associated with PAA-based AOPs for AA degradation and provide insights into selecting suitable catalytic systems aimed at efficient and by-product-free degradation of pollutants containing aromatic -NH2.
Collapse
Affiliation(s)
- Jing-Hang Wu
- Department of Environmental Science and Engineering, CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China
| | - Tian-Hao Yang
- Department of Environmental Science and Engineering, CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China
| | - Fei Chen
- Department of Environmental Science and Engineering, CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China
| | - Han-Qing Yu
- Department of Environmental Science and Engineering, CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China
| |
Collapse
|
4
|
Nawaz MI, Yi C, Zafar AM, Yi R, Abbas B, Sulemana H, Wu C. Efficient degradation and mineralization of aniline in aqueous solution by new dielectric barrier discharge non-thermal plasma. ENVIRONMENTAL RESEARCH 2023; 237:117015. [PMID: 37648191 DOI: 10.1016/j.envres.2023.117015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/21/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
Aniline is a priority pollutant that is unfavorable to the environment and human health due to its carcinogenic and mutagenic nature. The performance of the dielectric barrier discharge reactor was examined based on the aniline degradation efficiency. Different parameters were studied and optimized to treat various wastewater conditions. Role of active species for aniline degradation was investigated by the addition of inhibitors and promoters. The optimum conditions were 20 mg/L initial concentration, 1.8 kV applied voltage, 4 L/min gas flow rate and a pH of 8.82. It was observed that 87% of aniline was degraded in 60 min of dielectric barrier discharge treatment at optimum conditions. UV-Vis spectra showed gradual increase in the treatment efficiency of aniline with the propagation of treatment time. Mineralization of AN was confirmed by TOC measurement and a decrease in pH during the process. To elicit the aniline degradation route, HPLC and LC-MS techniques were used to detect the intermediates and byproducts. It was identified that aniline degraded into different organic byproducts and was dissociated into carbon dioxide and water. Comparison of the current system with existing advanced oxidation processes showed that DBD has a remarkable potential for the elimination of organic pollutants.
Collapse
Affiliation(s)
- Muhammad Imran Nawaz
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Chengwu Yi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Abdul Mannan Zafar
- Civil and Environmental Engineering Department, United Arab Emirates University, AlAin, 15551, United Arab Emirates; Biotechnology Research Center, Technology Innovation Institute, Masdar, 9639, Abu Dhabi, United Arab Emirates.
| | - Rongjie Yi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Babar Abbas
- Department of Environmental Engineering, University of Engineering and Technology, Taxila, 47080, Pakistan.
| | - Husseini Sulemana
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Chundu Wu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| |
Collapse
|
5
|
Xu Q, Zhou F, Yu Q, Xiao Y, Jiang X, Zhang W, Qiu R. Aniline degradation and As (III) oxidation and immobilization by thermally activated persulfate. CHEMOSPHERE 2023; 338:139573. [PMID: 37474037 DOI: 10.1016/j.chemosphere.2023.139573] [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: 02/16/2023] [Revised: 05/09/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023]
Abstract
In the Pearl River Delta of China, many sites are likely contaminated with aniline in the soil and arsenic (As) in the groundwater because of a high As background level and the prevailing printing and dyeing industry. This study is to explore the remediation performance of thermally activated persulfate oxidation for the sites with these two contaminants, aniline and As. The As influence on the aniline degradation and vice versa are also systematically investigated. When the molar ratio of aniline to persulfate is 1: 4.65, over 85% of aniline can be degraded at 40 °C in 24 h, and 100 μg L-1 As(III) in solution can be completely adsorbed by the soil. A higher pH favored the aniline degradation but disfavored the As(III) oxidation. Due to the strong buffer capacity of the soil, aniline in the soil could be more quickly degraded than those in the solution. The As(III), however, seem more easily oxidized in the absence of soil. The coexisting Fe2+ can substantially improve As(III) oxidation and immobilization, although the dilute Fe2+ solution may suppress the aniline degradation. The presence of aniline severely inhibited the As(III) oxidation and adsorption, likely due to the competition for the generated free radicals and the adsorption sites on the soils. In contrast, the existing As(III) has a slight effect on aniline degradation. These findings are believed to provide the theoretical basis for the remediation of aniline-arsenic contaminated sites.
Collapse
Affiliation(s)
- Qianting Xu
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Fengping Zhou
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Qingxin Yu
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Ye Xiao
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Xinyi Jiang
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Weihua Zhang
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China; Shenzhen Research Institute, Sun Yat-sen University, Shenzhen, 518057, China.
| | - Rongliang Qiu
- Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| |
Collapse
|
6
|
CeO2/ZIF-9 composites as a heterogeneous catalyst for peroxymonosulfate activation to degrade methylene blue. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04965-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
7
|
Zhao Y, Zhan X, Sun Y, Wang H, Chen L, Liu J, Shi H. MnO x@N-doped carbon nanosheets derived from Mn-MOFs and g-C 3N 4 for peroxymonosulfate activation: Electron-rich Mn center induced by N doping. CHEMOSPHERE 2023; 310:136937. [PMID: 36273608 DOI: 10.1016/j.chemosphere.2022.136937] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/14/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
The fabrication of metal-carbon hybrids with heteroatom doping from manganese-metal organic frameworks (MOFs) has rarely been reported for peroxymonosulfate (PMS) activation. In this work, novel MnOx@N-doped carbon (MnOx@NC) nanosheets were prepared using 2D manganese-1,4 benzenedicarboxylic acid-based MOFs (Mn-MOFs) and different proportions of graphitic carbon nitride (g-C3N4, additional N source and carbon source) to activate PMS for sulfamethoxazole (SMX) removal. The polarization difference induced by Mn-N coordination during the carbonization process made C an electron-poor center and Mn an electron-rich center, thus providing more Mn(II) for PMS activation. Benefiting from the highest Mn(II) content, the most uniform and exposed MnOx active sites, abundant N active species and rich defective sites, MnOx@NC-20 showed excellent degradation (72.9% within 5 min) and mineralization performance (47.40% within 60 min) for SMX. Nonradical and radical processes worked together in MnOx@NC-20/PMS/SMX system, where singlet oxygen (1O2) dominated the degradation of SMX. N-doped carbon not only exhibited dragging and protection effects on MnOx, but also provided adsorption sites for PMS and pollutants, thus reducing their migration distance. Moreover, the electrons of organic substrates could be captured by the electron-poor carbon layer and then transported to the electron-rich Mn center, thus improving the utilization efficiency of PMS and the redox of Mn. This study provides a facile optimization method to prepare MOFs-derived carbon catalysts with improved stability and catalytic performance.
Collapse
Affiliation(s)
- Yue Zhao
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Xiaohui Zhan
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Yanping Sun
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - He Wang
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China; State Grid Zhejiang Electric Power Corporation Research Institute, Hangzhou, 310014, PR China
| | - Lei Chen
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Junyan Liu
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Huixiang Shi
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou, 310058, PR China.
| |
Collapse
|
8
|
Wang T, Liu X, Liao R, Zhan H, Wang Y. Construction of a Magnetic γ‐Fe
2
O
3
/h‐BN Composite for Tetracycline Degradation by Visible‐Light‐Initiated Peroxydisulfate. ChemistrySelect 2022. [DOI: 10.1002/slct.202203454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Tao Wang
- Jingdezhen Ceramic University School of Materials Science and Engineering Jingdezhen 333403 People's Republic of China
| | - Xiqing Liu
- Jingdezhen Ceramic University School of Materials Science and Engineering Jingdezhen 333403 People's Republic of China
| | - Runhua Liao
- Jingdezhen Ceramic University School of Materials Science and Engineering Jingdezhen 333403 People's Republic of China
| | - Hongquan Zhan
- Jingdezhen Ceramic University School of Materials Science and Engineering Jingdezhen 333403 People's Republic of China
| | - Yongqing Wang
- Jingdezhen Ceramic University School of Materials Science and Engineering Jingdezhen 333403 People's Republic of China
| |
Collapse
|
9
|
Di S, Wang J, Zhai Y, Chen P, Ning T, Shi C, Yang H, Bao Y, Gao Q, Zhu S. Efficient activation of peroxymonosulfate mediated by Co(II)-CeO 2 as a novel heterogeneous catalyst for the degradation of refractory organic contaminants: Degradation pathway, mechanism and toxicity assessment. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:129013. [PMID: 35523092 DOI: 10.1016/j.jhazmat.2022.129013] [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: 02/24/2022] [Revised: 04/05/2022] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
A series of Co(II)-CeO2 mixed metal oxides were synthesized by a facile hydrothermal-calcination procedure for activating peroxymonosulfate (PMS) and degrading toxic and difficult biodegradable organics. Co(II)-CeO2 showed excellent degradation performance toward rhodamine B (RhB), toluidine blue, methylene blue and diclofenac. RhB is a refractory organic contaminant, and ecotoxicological evaluation unraveled its harmfulness to the biosphere. RhB was selected as the model pollutant to investigate catalytic mechanisms. Parameters affecting degradation performance were profoundly investigated, including Co:Ce feed ratio, initial pH, PMS dosage, catalyst dosage, RhB concentration, coexisting ions and reaction temperature. Reaction mechanisms were proposed based on density functional theory calculations and identifications of reactive oxygen species. Improvements have been achieved in seven aspects compared to previous studies, including 100% degradation ratio in both real water samples and each reuse of the catalyst, ultrafast degradation rate, cost-effectiveness of the catalyst, toxicity-attenuation provided by the developed degradation method, high degree of mineralization for the model pollutant, negligible leaching of active sites, and the enhancement of catalytic performance by utilizing trace leached cobalt, endowing the technique with broad applicability and prospect.
Collapse
Affiliation(s)
- Siyuan Di
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Jiahao Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yixin Zhai
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Pin Chen
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Tao Ning
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Chunxiang Shi
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Hucheng Yang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Yue Bao
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Qiang Gao
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Shukui Zhu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China.
| |
Collapse
|
10
|
Hu J, Chen S, Liang X. Heterogeneous Catalytic Oxidation for the Degradation of Aniline in Aqueous Solution by Persulfate Activated with CuFe
2
O
4
/Activated Carbon Catalyst. ChemistrySelect 2022. [DOI: 10.1002/slct.202201241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jingchen Hu
- School of Chemical Engineering East China University of Science and Technology Mei Long Road 130 Shanghai 200237 PR China
| | - Shanshan Chen
- School of Chemical Engineering East China University of Science and Technology Mei Long Road 130 Shanghai 200237 PR China
| | - Xiaoyi Liang
- School of Chemical Engineering East China University of Science and Technology Mei Long Road 130 Shanghai 200237 PR China
| |
Collapse
|
11
|
Xu Q, Liu Y, Wang Y, Song Y, Zhao C, Han L. Synergistic oxidation-filtration process of electroactive peroxydisulfate with a cathodic composite CNT-PPy/PVDF ultrafiltration membrane. WATER RESEARCH 2022; 210:117971. [PMID: 34942524 DOI: 10.1016/j.watres.2021.117971] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/04/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Ultrafiltration is an advanced water treatment process which performs poorly in the removal of small molecule organic pollutants, and is susceptible to irreversible membrane fouling. In this study, a new carbon nanotube cross-linked polypyrrole composite ultrafiltration membrane (CNT-PPy/PVDF) was fabricated, and exhibited excellent conductivity, hydrophilicity, and permeability in a novel electro-filtration activated peroxydisulfate (PDS) system (EFAP) for cathodic electrochemical activation of PDS. The EFAP showed satisfactory performance in removal of series of small molecule organic pollutants (i.e., carbamazepine, sulfamethoxazole, phenol, diclofenac.) and stable removal ratio (remaining above 90% after 20 operating cycles). Further study proved the electric field could effectively protect the cathodic CNT-PPy/PVDF membrane from oxidative damage through continual free electrons injection. Besides, the EFAP achieved up to 95% flux recovery and 80% reduction of irreversible membrane fouling (bovine serum albumin as the model foulant). Moreover, experiments confirmed that the in situ generated •OH, SO4•-, and 1O2 were the main reactive oxygen species contributing to small organics removal, while the irreversible membrane fouling mitigation was mainly due to the electrical repulsion, SO4•- and •OH, rather than 1O2. This new type of EFAP may provide a promising and sustainable approach in organic emerging contaminants control in water treatment.
Collapse
Affiliation(s)
- Qibin Xu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
| | - Yin Liu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
| | - Ying Wang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
| | - Yunqian Song
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
| | - Chun Zhao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| | - Le Han
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| |
Collapse
|
12
|
Lu Y, Yang F, Chen S, Shi W, Qi C, Peng G. Decomplexation of Ni(II)-citrate and recovery of nickel from chelated nickel containing electroplating wastewater by peroxymonosulfate with nickel. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120142] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
Zhu J, Zhu Y, Zhou W. Cu-doped Ni-LDH with abundant oxygen vacancies for enhanced methyl 4-hydroxybenzoate degradation via peroxymonosulfate activation: key role of superoxide radicals. J Colloid Interface Sci 2021; 610:504-517. [PMID: 34838311 DOI: 10.1016/j.jcis.2021.11.097] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/08/2021] [Accepted: 11/17/2021] [Indexed: 01/19/2023]
Abstract
Oxygen vacancies (OVs) were introduced into Ni-based layered double hydroxides (LDHs) through Cu doping, and the catalytic performance of the resulting NixCu-LDHs were investigated for peroxymonosulfate (PMS) activation and methyl 4-hydroxybenzoate (MeP) degradation. Compared with that of Ni-LDH, the catalytic performance of NixCu-LDHs were significantly enhanced and increased with increasing OV content in the catalysts, indicating that Cu doping introduced OVs into NixCu-LDHs and greatly improved their catalytic activity with PMS. Quenching experiments and EPR analyses confirmed that oxidation processes dominated by superoxide radicals (O2•-) and singlet oxygen (1O2), rather than sulfate radicals (SO4•-) or hydroxyl radicals (•OH) used by traditional LDH catalysts, were responsible for MeP degradation by Ni15Cu-LDHs. In addition, quenching experiments with different systems showed the fate of reduced SO4•-and •OH, and demonstrated that O2•- and 1O2 concentrations grew with increasing OV content, confirming that the presence of OVs affected the process of PMS activation. Notably, O2•- mainly originated from adsorbed oxygen or dissolved oxygen (DO) by acquiring electrons from OVs in Ni15Cu-LDHs, since OVs possess abundant localized electrons. Consequently, an OV-mediated oxidative mechanism was proposed for Ni15Cu-LDHs/PMS. This study provides new clues for enhancing the catalytic performance of LDH catalysts by introducing OVs via metal doping in PMS-based AOPs systems.
Collapse
Affiliation(s)
- Jingyi Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yixin Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Wenjun Zhou
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Ecological Civilization Academy, Anji, Zhejiang 313300, China; The Key Laboratory of Organic Pollution Process and Control, Zhejiang Province, Hangzhou, Zhejiang 310058, China.
| |
Collapse
|
14
|
Zhang D, Li Y, Guo J, Zhou L, Lan Y, Chen C. MOFs-derived magnetic C@Cu-Ni bimetal particles: An efficient peroxymonosulfate activator for 2,4,6-trichlorophenol degradation. CHEMOSPHERE 2021; 269:129394. [PMID: 33388568 DOI: 10.1016/j.chemosphere.2020.129394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/01/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
In this study, magnetic Cu and Ni bimetallic particles embedded carbon sheets, namely as C@Cu-Ni, was derived via calcining a mixture of Cu-MOFs and Ni-MOFs (mass ratio = 4:6) under N2 protection and served as a catalyst for the degradation of 2,4,6-trichlorophenol (2,4,6-TCP) by peroxymonosulfate (PMS). The results showed that more than 98.5% of 2,4,6-TCP (10 mg L-1) was rapidly decomposed at initial pH = 5, PMS = 1 mM and catalyst dosage = 0.1 g L-1 within 30 min, accompanied by 42.47% removal of total organic carbon (TOC). This fully confirmed that C@Cu-Ni possessed excellent catalytic performance for PMS activation. The radical quenching experiments and electron paramagnetic resonance (EPR) investigation testified that the reactive oxygen species (ROS) included SO4•-, •OH, O2•- radicals and singlet oxygen (1O2), which were responsible for the rapid degradation of 2,4,6-TCP. Among them, O2•-and 1O2 played a decisive role. Cyclic voltammograms (CV) and electrochemical impedance spectroscopy (EIS) revealed that C@Cu-Ni material possessed superior electrical conductivity and electron transfer, improving its catalytic activity. What is more, C@Cu-Ni displayed excellent stability and could be consecutively used for five times without any decline of catalytic performance. The main intermediates of the 2,4,6-TCP degradation were analyzed by high-performance liquid chromatography-mass spectrometry (HPLC-MS/MS) and possible pathways of 2,4,6-TCP degradation were further proposed. The extraordinary stability and superior catalytic activity of C@Cu-Ni coupled with its easy separation from wastewater due to magnetism suggest that the newly synthesized material may offer a promising alternative approach to efficiently degrade organic pollutants by PMS.
Collapse
Affiliation(s)
- Deyun Zhang
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Yunong Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Jing Guo
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Lixiang Zhou
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Yeqing Lan
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Cheng Chen
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China.
| |
Collapse
|
15
|
Bai C, Liu Y, Wang C, Zhang XC, Wu JX, Ren HT, Han X. Conversion of aniline contaminant to valuable polyaniline polymers from wastewater under alkaline conditions. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
16
|
Bhat AP, Gogate PR. Degradation of nitrogen-containing hazardous compounds using advanced oxidation processes: A review on aliphatic and aromatic amines, dyes, and pesticides. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123657. [PMID: 33264866 DOI: 10.1016/j.jhazmat.2020.123657] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 06/12/2023]
Abstract
Nitrogen-containing amino and azo compounds are widely used in textile, agricultural and chemical industries. Most of these compounds have been demonstrated to be resistant to conventional degradation processes. Advanced oxidation processes can be effective to mineralize nitrogen-containing compounds and improve the efficacy of overall treatment schemes. Due to a global concern for the occurrence of toxic and hazardous amino-compounds and their harmful degradation products in water, it is important to develop technologies that focus on all the aspects of their degradation. Our focus is to present a state-of-the-art review on the degradation of several amine- and azo-based compounds using advanced oxidation processes. The categories reviewed are aromatic amines, aliphatic amines, N-containing dyes and N-containing pesticides. Data has been compiled for degradation efficiencies of each process, reaction mechanisms focusing on specific attack of oxidants on N atoms, the effect of process parameters like pH, initial concentration, time of treatment, etc. and identification of intermediates. Several AOPs have been compared to provide a systematic overview of available literature that will drive essential aspects of future research on amine-based compounds. Ozone is observed to be highly reactive to most amines, dyes and pesticides, followed by Fenton processes. Degradation of amines is highly sensitive to pH and mechanisms differ at different pH values. Cavitation is a promising alternative pre-treatment method for cost reduction. Hybrid methods under optimized conditions are demonstrated to give synergistic effects and must be tailored for specific effluents in question. In conclusion, even though nitrogen-containing compounds are recalcitrant in nature, the use of advanced oxidation processes at carefully established optimum conditions can yield highly efficient degradation of the compounds.
Collapse
Affiliation(s)
- Akash P Bhat
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Parag R Gogate
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, 400019, India.
| |
Collapse
|
17
|
Fu P, Ma Y, Lei B, Li G, Lin X. Decomposition of refractory aniline aerofloat collector in aqueous solution by an ozone/vacuum-UV (O 3/VUV) process. ENVIRONMENTAL TECHNOLOGY 2021; 42:659-670. [PMID: 31288622 DOI: 10.1080/09593330.2019.1642389] [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: 04/03/2019] [Accepted: 07/05/2019] [Indexed: 06/09/2023]
Abstract
The degradation of refractory aniline aerofloat (AAF) collector was investigated by an ozone/Vacuum-UV (O3/VUV) process. The effects of O3 dosage and initial pH on the AAF degradation were studied. The total organic carbon (TOC) and concentrations of S O 4 2 - , P O 4 3 - and N O 3 - anions were measured to evaluate the AAF mineralization. The solid phase extraction and gas chromatography-mass spectrometry (SPE/GC-MS) was developed to identify byproducts. The results showed that 99.84% of AAF could be removed by the O3/VUV, and the AAF degradation was enhanced at higher O3 dosage and initial solution pH. The radical scavenging tests revealed that most of AAF was degraded by OH• radicals, and the O3/UV254nm made the main contribution in AAF degradation in the O3/VUV system. The mineralization extents of C, S, P and N elements of AAF at 180 min reached 47.74%, 93.94%, 17.71% and 45.81%, respectively. At initial pH > 10.0, the EE/O values of AAF degradation by the O3/VUV was below 7.0 kWh m-3 per order, showing the energy consumption was acceptable. The SPE/GC-MS analysis showed that toxic aniline was generated in the O3/VUV oxidation of AAF, but it was further degraded at a longer time. Compared to the ozonation, the O3/VUV had a much lower content of aniline at 180 min. The possible degradation pathways of AAF by the O3/VUV were proposed.
Collapse
Affiliation(s)
- Pingfeng Fu
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
- Key Laboratory of High-efficient Mining and Safety of Metal Mines, Ministry of Education, Beijing, People's Republic of China
| | - Yanhong Ma
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Bolan Lei
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Gen Li
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Xiaofeng Lin
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
| |
Collapse
|
18
|
Aniline degradation by peroxydisulfate activated with magnetic Fe–Mn oxides composite: efficiency, stability, and mechanism. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01861-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Shang H, Xia Y, Zhou Y, Liu G, Hu X. Removal of aniline from wastewater by electro-polymerization with superior energy efficiency. ENVIRONMENTAL RESEARCH 2020; 190:109931. [PMID: 32781323 DOI: 10.1016/j.envres.2020.109931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Removal of toxic aniline from wastewater is of great importance in industrial manufacture. Traditional electrochemical methods encounter obstacles such as high energy consumption in mineralization and severe electrode passivation in electro-polymerization. In this paper, we report a practical electro-polymerization method by using Ti/Sb-SnO2/PbO2 anode to treat high concentration aniline wastewater. The cyclic voltammetric experiment was conducted and the problem of electrode passivation was solved by increasing the electrode potential. In the experiments of treating aniline wastewater, the produced solid polymer can separate from water rather than sticking to electrode surface. Elemental analysis shows that oxygen is incorporated in the polymer. Experiments were conducted under different conditions, including current density, pH and initial concentration of aniline and Na2SO4. The electro-polymerization route accounts for nearly 50% contribution in the removal of chemical oxygen demand (COD). Our electro-polymerization method gives an apparent current efficiency (ACE) of 232.15% and an energy consumption (Ep) of 0.008658 kWh g-1COD-1 when half of COD is removed at a current density of 15 mA cm-2, pH of 7.0, initial aniline concentration of 1.2 g L-1 and Na2SO4 concentration of 4 g L.-1.
Collapse
Affiliation(s)
- Hao Shang
- Hubei Key Lab of Electrochemical Power Source, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, China
| | - Yan Xia
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, China
| | - Yuanquan Zhou
- Hubei Key Lab of Electrochemical Power Source, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, China
| | - Guoliang Liu
- Hubei Key Lab of Electrochemical Power Source, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, China.
| | - Xiaohong Hu
- Hubei Key Lab of Electrochemical Power Source, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, China.
| |
Collapse
|
20
|
Copper phosphide: A dual-catalysis-center catalyst for the efficient activation of peroxydisulfate and degradation of Orange II. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117004] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
21
|
Yujie M, Feng G, Wenhua Y, Zhihua S. Analysis of free aniline in chrome-free leather accelerated aging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 238:118402. [PMID: 32408227 DOI: 10.1016/j.saa.2020.118402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/30/2020] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
Under acidic conditions, aniline can react with nitrite diazotization, then diazotization can reaction products under the condition of alkaline naphthol coupled with armor and color. The product of this reaction has a maximum absorption at 495 nm. By using a series of optimized experiments, we obtained the optimum instrument operation parameters and reaction conditions to analyze aniline in leather extract solutions. Under optimal conditions, aniline concentration was within the range of 0.002-2.0 mg/L, and peak height (H, mV) and concentration (c, mg/L) had a linear relationship. The linear correlation coefficient was R2 = 0.9997, the detection limit was 1.62 μg/L, and the RSD was 0.71%. Aniline in leather extract after accelerated aging was calculated using our calculation method, and the range of standard addition recovery was recorded to be between 97.8% and 103.8%. Compared with the national standard anti-interference method, our result recorded more accurate results and the relative mean absolute error (RAAE) was smaller. Our flow injection analysis combined with ultraviolet visible spectrophotometry (FIA-UV) method can eliminate interference due to trace elements in the extraction solution, as well as effectively improving accuracy and reliability for the determination of aniline in chrome-free leather extraction solution.
Collapse
Affiliation(s)
- Ma Yujie
- The National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Gao Feng
- The National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Yang Wenhua
- The National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Shan Zhihua
- The National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China.
| |
Collapse
|
22
|
Lin Y, Song B, Wang X, Zhang C, Zhang X, Sun S, Wu S, Ren H, Jia S, Liu Y, Han X. Catalytic cross‐coupling of aniline by pyrite and dissolved oxygen under alkaline conditions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi‐Ying Lin
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Bao‐Dong Song
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Xiang‐Ming Wang
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Cong‐Cong Zhang
- School of Environmental Science and EngineeringTianjin University Tianjin China
| | - Xiao‐Cong Zhang
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Shi‐Wei Sun
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Song‐Hai Wu
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Hai‐Tao Ren
- School of TextilesTiangong University Tianjin China
| | - Shao‐Yi Jia
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Yong Liu
- School of Chemistry and Chemical EngineeringTianjin University of Technology Tianjin China
| | - Xu Han
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
- School of Environmental Science and EngineeringTianjin University Tianjin China
| |
Collapse
|
23
|
Qi Y, Guo C, Xu X, Gao B, Yue Q, Jiang B, Qian Z, Wang C, Zhang Y. Co/Fe and Co/Al layered double oxides ozone catalyst for the deep degradation of aniline: Preparation, characterization and kinetic model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:136982. [PMID: 32014786 DOI: 10.1016/j.scitotenv.2020.136982] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/26/2020] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
In this work, Co/Fe and Co/Al layered double oxides (Co/Fe-LDO and Co/Al- LDO)ozone catalysts were obtained from Co/Fe and Co/Al layered double hydroxides intermediates (Co/Fe-LDH and Co/Al-LDH). Firstly, the optimal preparation parameters of the two intermediates were determined, then the morphology and mineralogy microstructure of the derived Co/Fe-LDO and Co/Al- LDO ozone catalysts were systematically studied. Finally, the reaction kinetics of the two ozone catalysts for the deep degradation of aniline wastewater in catalysts/ozone systems were established. The results showed that the optimal preparation conditions were set as pH 12, temperature 60 °C, cobalt‑iron ratio 3:1 for Co/Fe-LDH intermediate, and pH 12, temperature 70 °C, cobalt‑aluminum ratio 3:1 for Co/Al-LDH intermediate. During calcination treatment, the dehydration and recrystallization effect impelled LDH intermediate to form LDO catalyst. The derived ozone catalysts Co/Fe-LDO and Co/Al-LDO possess layered structure, and Co species was mainly based on Co3O4 as the main mineral phase of the two ozone catalysts. The addition of catalyst can realize the deep ozonation catalysis of aniline wastewater. The kinetic models established on the aniline oxidized by ozone or catalyst/ozone systems were both fitted the first-order reactions, and the reaction activation energy for CODCr and TOC degradation were significantly reduced in catalyst/ozone system.
Collapse
Affiliation(s)
- Yuanfeng Qi
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China; School of Environmental Science and Technology, Shandong University, Qingdao, 266237, PR China; Zhejiang Heze Envrionmental Tech Shares Co.,LTD, Huzhou, 313100, PR China.
| | - Ce Guo
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Xing Xu
- School of Environmental Science and Technology, Shandong University, Qingdao, 266237, PR China; Zhejiang Heze Envrionmental Tech Shares Co.,LTD, Huzhou, 313100, PR China
| | - Baoyu Gao
- School of Environmental Science and Technology, Shandong University, Qingdao, 266237, PR China
| | - Qinyan Yue
- School of Environmental Science and Technology, Shandong University, Qingdao, 266237, PR China
| | - Bo Jiang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| | - Zhou Qian
- Zhejiang Heze Envrionmental Tech Shares Co.,LTD, Huzhou, 313100, PR China; Environmental Science Research and Design Institute of Zhejiang Province, Hangzhou 310007, PR China
| | - Changzhi Wang
- Zhejiang Heze Envrionmental Tech Shares Co.,LTD, Huzhou, 313100, PR China; Environmental Science Research and Design Institute of Zhejiang Province, Hangzhou 310007, PR China
| | - Yanqing Zhang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, PR China
| |
Collapse
|
24
|
Santos HLS, Corradini PG, Medina M, Dias JA, Mascaro LH. NiMo-NiCu Inexpensive Composite with High Activity for Hydrogen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2020; 12:17492-17501. [PMID: 32216323 DOI: 10.1021/acsami.0c00262] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, the effect of copper addition on NiMo coating is evaluated in regard to the hydrogen evolution reaction (HER). NiMo and NiMo-NiCu composites are prepared by a simple coelectrodeposition process. The effect of Cu on deposit characters were tested by varying it in the range of 0.06-0.20 molar ratio. Copper addition promotes the growth of a new crystalline phase: NiCu. Also, the copper addition changed the composite surface. NiMo-NiCu0.12 shows a surface roughness 30 times higher than the NiMo material. NiMo-NiCu materials present higher activity toward HER, larger electroactive area, and higher stability in continuous water electrolysis than NiMo catalysts, as demonstrated by Tafel curves, electrochemical impedance spectroscopy measurements, and polarization tests. The combination of the large electroactive area due to the copper addition, the synergism between Ni-Mo, and the presence of Ni and Mo oxides on the surface results in catalyst with excellent features for HER application.
Collapse
Affiliation(s)
- Hugo L S Santos
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, Km 235, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Patricia G Corradini
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, Km 235, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Marina Medina
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, Km 235, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Jeferson A Dias
- Department of Material Engineering, Federal University of São Carlos, Rod. Washington Luiz, Km 235, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Lucia H Mascaro
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, Km 235, CEP 13565-905, São Carlos, São Paulo, Brazil
| |
Collapse
|
25
|
Li W, Li Y, Zhang D, Lan Y, Guo J. CuO-Co 3O 4@CeO 2 as a heterogeneous catalyst for efficient degradation of 2,4-dichlorophenoxyacetic acid by peroxymonosulfate. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:121209. [PMID: 31563670 DOI: 10.1016/j.jhazmat.2019.121209] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/26/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
CuO-Co3O4@CeO2 nanoparticles used as a heterogeneous catalyst were prepared via a sol-gel method and characterized by various techniques. For comparison, a series of oxides was investigated for activating peroxymonosulfate (PMS) during the degradation of 2,4-dichlorophenoxyacetic acid (2,4-D). The results indicated that CuO-Co3O4@CeO2 exhibited the highest catalytic performance among the catalysts. Complete degradation of 2,4-D (20 mg/L) was realized within 45 min at 1 mM PMS, CuO-Co3O4@CeO2 loading of 0.07 g/L, and pH of 6. Recycling experiments confirmed that CuO-Co3O4@CeO2 was very stable, and the 2,4-D degradation efficiencies ranged from 100% to 97.5%, decreasing by only 2.5% after the fifth run. The outstanding catalysis of CuO-Co3O4@CeO2 resulted from the synergy of cerium, cobalt, and copper. Electron paramagnetic resonance and radical scavenger experiments confirmed the production of SO4• - and •OH radicals in the CuO-Co3O4@CeO2/PMS system, which were responsible for efficient decomposition of 2,4-D. Furthermore, the combination of CuO-Co3O4@CeO2 andPMS was applied to treat natural water containing 2,4-D, and a high 2,4-D removal rate was also achieved. Based on these results, it was deduced that CuO-Co3O4@CeO2 can be utilized as a catalyst to activate PMS and destroy organic contaminants in aqueous solution.
Collapse
Affiliation(s)
- Wei Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Tobacco Industrial Limited Company, Nanjing, 210011, PR China
| | - Yuxin Li
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Deyun Zhang
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Yeqing Lan
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Jing Guo
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China.
| |
Collapse
|
26
|
Electrochemically assisted decomposition of ozone for degradation and mineralization of Diuron. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135423] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|