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Chen Y, Su R, Xu F, Ma M, Wang Y, Ma D, Li Q. Oxygen-containing functional groups in Fe 3O 4@three-dimensional graphene nanocomposites for enhancing H 2O 2 production and orientation to 1O 2 in electro-Fenton. J Hazard Mater 2024; 470:134162. [PMID: 38555670 DOI: 10.1016/j.jhazmat.2024.134162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/17/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
In electro-Fenton (EF), development of a bifunctional electrocatalyst to realize simultaneous H2O2 generation and activation efficiently for generating reactive species remains a challenge. In particular, a nonradical-mediated EF is more favorable for actual wastewater remediation, and deserves more attention. In this study, three-dimensional graphene loaded with Fe3O4 nanoparticles (Fe3O4@3D-GNs) with abundant oxygen-containing functional groups (OFGs) was synchronously synthesized using a NaCl-template method and served as a cathode to establish a highly efficient and selective EF process for contaminant degradation. The amounts of OFGs can be effectively modulated via the pyrolysis temperature to regulate the 2e- oxygen reduction reaction activity and reactive oxygen species (ROS) production. The optimized Fe3O4@3D-GNs synthesized at 750 °C (Fe3O4@3D-GNs-750) with the highest -C-O-C and -C꞊O group ratios exhibited the maximum H2O2 and 1O2 yields during electrocatalysis, thus showing remarkable versatility for eliminating organic contaminants from surface water bodies. Experiments and theoretical calculations have demonstrated the dominant role of -C-O-C in generating H2O2 and the positive influence of -C꞊O sites on the production of 1O2. Moreover, the surface-bound Fe(II) favors the generation of surface-bound •OH, which steers a more favorable oxidative conversion of H2O2 to 1O2. Fe3O4@3D-GNs were proven to be less pH-dependent, low-energy, stable, and recyclable for practical applications in wastewater purification. This study provides an innovative strategy to engineer active sites to achieve the selective electrocatalysis for eliminating pollution and reveals a novel perspective for 1O2-generation mechanism in the Fenton reaction.
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Affiliation(s)
- Yi Chen
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Ruidian Su
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Fei Xu
- Environment Research Institute, Shandong University, Qingdao 266200, PR China
| | - Mengyu Ma
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Yan Wang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Defang Ma
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Qian Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China.
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2
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Li L, Guo J, Zheng K, Heng H, Zhang Y, Xie C, Yin M, Zhou B. MoS 2-mediated active hydrogen modulation to boost Fe 2+ regeneration in solar-driven electro-Fenton process. J Hazard Mater 2024; 470:134274. [PMID: 38608587 DOI: 10.1016/j.jhazmat.2024.134274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 04/03/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024]
Abstract
The sluggish kinetics of Fe2+ regeneration seriously hinders the performance of Fenton process. However, the conventional Fenton system excessively stifle hydrogen-producing reactions, ignoring the significance of active hydrogen (H*) in Fe3+ reduction. Herein, a strategy of H* modulation is developed by decorating molybdenum disulfide (MoS2) on a graphite felt (GF) cathode to boost Fe2+ regeneration in solar-driven electro-Fenton (SEF) process. With MoS2 regulation, moderately dispersed MoS2 on GF can serve as a bifunctional cathode, where the H* and hydrogen peroxide (H2O2) are simultaneously generated through H+ reduction and O2 reduction, respectively. The in-situ generated H2O2 can trigger Fenton reactions with Fe2+, while the H* with robust reducing potential can significantly expedite Fe3+ reduction, consequently enhancing the HO• production. Both DFT calculations and EPR experiments confirm that H* can be activated via MoS2 decoration. The results show that Fe2+ concentration in the MoS2 @GF-SEF system remains at 15.74 mg/L (56.21%) after 6 h, which is 17.89 times that of the GF-SEF system. Moreover, the HO• content and organics degradation rate in the MoS2 @GF-SEF are 3.61 and 5.30 times those of the GF-SEF, respectively. This study provides a practical cathode strategy of H* modulation to enhance HO• production and electro-Fenton process. ENVIRONMENTAL IMPLICATION: Boosting Fe2+ regeneration is of great value for the Electro-Fenton process. Herein, report a strategy to achieve this goal based on a MoS2 @GF cathode. Remarkably, the MoS2 @GF system exhibits exceptional efficiency for both various refractory organic compounds with environmentally hazardous effects and sterilization aspects, which can also work over a wide range of pH values (3-11). Specially, this system is driven only by solar energy. These characteristics make the electro-Fenton system more suitable for practical wastewater treatment.
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Affiliation(s)
- Linsen Li
- Hebei Key Laboratory of Public Health Safety, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, PR China.
| | - Jiaqing Guo
- Hebei Key Laboratory of Public Health Safety, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, PR China
| | - Kun Zheng
- Hebei Key Laboratory of Public Health Safety, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, PR China
| | - Huiqi Heng
- Hebei Key Laboratory of Public Health Safety, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, PR China
| | - Yan Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China.
| | - Chaoyue Xie
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Mingyuan Yin
- Hebei Key Laboratory of Public Health Safety, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, PR China
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
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3
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Zheng Y, Yang J, Li M, Zhu Y, Liang J, Yu D, Wang Z, Pei J. Mechanistic insight into the degradation of sulfadiazine by electro-Fenton system: Role of different reactive species. J Hazard Mater 2024; 469:134063. [PMID: 38508112 DOI: 10.1016/j.jhazmat.2024.134063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/08/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
Sulfadiazine (SDZ), a widely used effective antibiotic, is resistant to conventional biological treatment, which is concerning since untreated SDZ discharge can pose a significant environmental risk. Electro-Fenton (EF) technology is a promising advanced oxidation technology for efficiently removing SDZ. However, due to the limitations of traditional experimental methods, there is a lack of in-depth study on the mechanism of ·OH-dominated SDZ degradation in EF process. In this study, an EF system was established for SDZ degradation and the transformation products (TPs) were detected by mass spectrometry. Dynamic thermodynamic, kinetic and wave function analysis of reactants, transition states and intermediates were proposed by density functional theory calculations, which was applied to elucidate the underlying mechanism of SDZ degradation. Experimental results showed that amino, benzene, and pyrimidine sites in SDZ were oxidized by ·OH, producing TPs through hydrogen abstraction and addition reactions. ·OH was kinetically more likely to attack SDZ- than SDZ. Fe(IV) dominated the single-electron transfer oxidation reaction of SDZ, and the formed organic radicals can spontaneously generate the de-SO2 product via Smiles rearrangement. Toxicity experiments showed the toxicity of SDZ and TPs can be greatly reduced. The results of this study promote the understanding of SDZ degradation mechanism in-depth. ENVIRONMENTAL IMPLICATION: Sulfadiazine (SDZ) is one of the antibiotics widely used around the world. However, it has posed a significant environmental risk due to its overuse and cannot be efficiently removed by traditional treatment methods. The lack of in-depth study on SDZ degradation mechanism under reactive species limits the improvement of SDZ degradation efficiency. Therefore, this work focused on SDZ degradation mechanism in-depth under electro-Fenton system through reactive species investigation, mass spectrometry analysis, and theoretical calculation. The results in this study can provide a theoretical basis for improving the SDZ degradation efficiency which will contribute to solving SDZ pollution problems.
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Affiliation(s)
- Yanshi Zheng
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Jinyan Yang
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Mei Li
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Yingshi Zhu
- Office of Scitech Research, Zhejiang Environment Technology Co., Ltd., Hangzhou 311100, People's Republic of China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Jiayu Liang
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Dehai Yu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, People's Republic of China
| | - Ziyao Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, People's Republic of China
| | - Jianchuan Pei
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China.
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4
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Jia Y, Li H, Zhao H, Zhang G, Zhang Z, Zhang X, Zhou W. A new strategy for improving the energy efficiency of electro-Fenton: Using N-doped activated carbon cathode with strong Fe(III) adsorption capacity to promote Fe(II) regeneration. J Environ Manage 2024; 357:120823. [PMID: 38583380 DOI: 10.1016/j.jenvman.2024.120823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 03/13/2024] [Accepted: 04/01/2024] [Indexed: 04/09/2024]
Abstract
Fe(II) regeneration plays a crucial role in the electro-Fenton process, significantly influencing the rate of ·OH formation. In this study, a method is proposed to improve Fe(II) regeneration through N-doping aimed at enhancing the adsorption capacity of the activated carbon cathode for Fe(III). N-doping not only enriched the pore structure on the surface of activated carbon, providing numerous adsorption sites, but also significantly increased the adsorption energy for Fe(III). Among the types of nitrogen introduced, pyridine-N exhibited the most substantial enhancement effect, followed by pyrrole-N, while graphite-N showed a certain degree of inhibition. Furthermore, N-doping facilitated the adsorption of all forms of Fe(III) by activated carbon. The adsorption and electrosorption rates of the NAC-900 electrode for Fe(III) were 30.33% and 42.36%, respectively. Such modification markedly enhanced the Fe3+/Fe2+ cycle within the electro-Fenton system. The NAC-900 system demonstrated an impressive phenol degradation efficiency of 93.67%, alongside the lowest electricity consumption attributed to the effective "adsorption-reduction" synergy for Fe(III) on the NAC-900 electrode. Compared to the AC cathode electro-Fenton system, the degradation efficiency of the NAC-900 cathode electro-Fenton system at pH = levels ranging from 3 to 5 exceeded 90%; thus, extending the pH applicability of the electro-Fenton process. The degradation efficiency of phenol using the NAC-900 cathode electro-Fenton system in various water matrices approached 90%, indicating robust performance in real wastewater treatment scenarios. This research elucidates the impact of cathodic Fe(III) adsorption on Fe(II) regeneration within the electro-Fenton system, and clarifies the influence of different N- doping types on the cathodic adsorption of Fe(III).
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Affiliation(s)
- Yongying Jia
- School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
| | - Hongguang Li
- School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
| | - Haiqian Zhao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, China.
| | - Guole Zhang
- School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
| | - Zhuangzhuang Zhang
- School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
| | - Xiaolong Zhang
- School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
| | - Wei Zhou
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China
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5
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Liu H, Li K, Wang K, Wang Z, Liu Z, Zhu S, Qu D, Zhang Y, Wang J. A novel electro-Fenton hybrid system for enhancing the interception of volatile organic compounds in membrane distillation desalination. J Environ Sci (China) 2024; 138:189-199. [PMID: 38135387 DOI: 10.1016/j.jes.2023.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/28/2023] [Accepted: 03/28/2023] [Indexed: 12/24/2023]
Abstract
Membrane distillation (MD) is a promising alternative desalination technology, but the hydrophobic membrane cannot intercept volatile organic compounds (VOCs), resulting in aggravation in the quality of permeate. In term of this, electro-Fenton (EF) was coupled with sweeping gas membrane distillation (SGMD) in a more efficient way to construct an advanced oxidation barrier at the gas-liquid interface, so that the VOCs could be trapped in this layer to guarantee the water quality of the distillate. During the so-called EF-MD process, an interfacial interception barrier containing hydroxyl radical formed on the hydrophobic membrane surface. It contributed to the high phenol rejection of 90.2% with the permeate phenol concentration lower than 1.50 mg/L. Effective interceptions can be achieved in a wide temperature range, even though the permeate flux of phenol was also intensified. The EF-MD system was robust to high salinity and could electrochemically regenerate ferrous ions, which endowed the long-term stability of the system. This novel EF-MD configuration proposed a valuable strategy to intercept VOCs in MD and will broaden the application of MD in hypersaline wastewater treatment.
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Affiliation(s)
- Hongxin Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kuiling Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Kunpeng Wang
- State Key Laboratory of Environment Simulation and Pollution Control, School of Environment Tsinghua University, Beijing 100084, China
| | - Zhiyong Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zimou Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sichao Zhu
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China
| | - Dan Qu
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yu Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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6
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Gao Y, Xie F, Bai H, Zeng L, Zhang J, Liu M, Zhu W. A carbon felt cathode modified by acidic oxidised carbon nanotubes for the high H 2O 2 generation and its application in electro-Fenton. Environ Technol 2024; 45:1669-1682. [PMID: 36408871 DOI: 10.1080/09593330.2022.2150093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Herein, a carbon felt (CF) cathode modified by the acidic oxidised carbon nanotubes (OCNTs) exhibited a high yield of the H2O2 generation in electro-Fenton. Rotating disk electrode (RDE) measurements showed that the selective generation of H2O2 occurred on the CF cathode coated by OCNTs (OCNTs/CF), which was attributed to the high amount of oxygen-containing functional groups in OCNTs. Moreover, the pollutant degradation efficiency could almost reach 100% within 60 min in electro-Fenton with OCNTs/CF as the cathode. Furthermore, the pollutant removal efficiency was kept constant after five consecutive cycles, indicating the high stability of OCNTs/CF cathode. Besides, the hydrophilicity of OCNTs/CF cathode was significantly enhanced owing to the abundant oxygen-contained functional groups on the surface of the OCNTs/CF cathode, which facilitated the mass transfer between the OCNTs/CF cathode and the reactants in the bulk solution. To reveal the possible mechanism in electro-Fenton equipped with the OCNTs/CF cathode, quenching experiments and electron paramagnetic resonance (EPR) investigations were further conducted. This work provided valuable insights into the fabrication of the non-metallic cathode with a high ability towards H2O2 generation in electro-Fenton for efficient pollutant removal.
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Affiliation(s)
- Ying Gao
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
| | - Fangshu Xie
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
| | - Huiling Bai
- College of literature, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
| | - Li Zeng
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
| | - Jingbin Zhang
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
| | - Meiyu Liu
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
| | - Weihuang Zhu
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an, People's Republic of China
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7
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Ahmad A, Priyadarshini M, Yadav S, Ghangrekar MM, Surampalli RY. 3D electro-Fenton augmented with iron-biochar particle electrodes derived from waste iron bottle caps and sugarcane bagasse for the remediation of sodium dodecyl sulphate. Environ Res 2024; 245:117998. [PMID: 38145735 DOI: 10.1016/j.envres.2023.117998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/04/2023] [Accepted: 12/19/2023] [Indexed: 12/27/2023]
Abstract
The present work demonstrates a novel strategy of synthesizing iron-biochar (Fe@BCSB) composite made with the waste iron bottle cap and sugar cane bagasse for implementation in the three-dimensional electro-Fenton (3DEF) process. The catalytic ability of the Fe@BCSB composite was explored to remediate the sodium dodecyl sulphate (SDS) surfactant from wastewater at neutral pH. At the optimum operating condition of Fe@BCSB dose of 1.0 g L-1, current density of 4.66 mA cm-2, and Na2SO4 dose of 50 mM, nearly 92.7 ± 3.1% of 20 mg L-1 of SDS abatement was attained during 120 min of electrolysis time. Moreover, the Fe@BCSB showed significant recyclability up to six cycles. Besides, other organics were successfully treated with more than 85% abatement efficiency in the proposed Fe@BCSB-supported 3DEF process. The total operating cost obtained during SDS treatment was around 0.31 US$ m-3 of wastewater. The phytotoxicity test revealed the positive impact of the 3DEF-treated effluent on the germination of the Vigna radiata. The electron paramagnetic resonance conveyed •OH as the prevailing reactive species for the oxidation of SDS in the 3DEF process. Further, about 81.3 ± 3.8% of SDS and 53.7 ± 4.1% of mineralization efficacy were acquired from the real institutional sewage.
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Affiliation(s)
- Azhan Ahmad
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Monali Priyadarshini
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Shraddha Yadav
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Makarand M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India; School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Rao Y Surampalli
- Global Institute for Energy, Environment and Sustainability, Kansas, USA
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8
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Xu Z, Ma X, He F, Lu M, Zhang J, Wang S, Dong P, Zhao C. In situ generated iron oxide nanosheet on iron foam electrode for enhanced electro-Fenton performance toward pharmaceutical wastewater treatment. J Hazard Mater 2024; 465:133193. [PMID: 38103298 DOI: 10.1016/j.jhazmat.2023.133193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/25/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023]
Abstract
Electro-Fenton (EF) is considered to be an effective technology for the purification of organic wastewater containing antibiotics, but the construction of accessible and efficient heterogeneous EF catalytic materials still faces challenges. In this study, an iron foam-derived electrode (FeOx/if-400) was prepared by a simple method (chemical oxidation combined heat treatment). The fabricated electrode presented great EF degradation efficiency under wide pH range (almost completely removing 50 mg L-1 TNZ within 60 min) and maintained great stability after consecutive operation (>95% removal after six cycles). Also, the FeOx/if-400 electrode showed good purification ability for pharmaceutical wastewater as evaluated by the quadrupole time-of-flight mass spectrometry and the three-dimensional excitation-emission matrix fluorescence spectroscopy. Based on experimental results, characterization analysis, and density functional theory (DFT) calculations, the EF reaction mechanism of FeOx/if-400 electrode and the organics degradation pathways in simulated and real matrices were proposed. Significantly, the biotoxicity assessment of the degradation intermediate products was revealed by ECOSAR software and relative inhibition of E. coli, which fully proved the environmental friendliness of the EF process by the FeOx/if-400 cathode. This work provides a green and effective EF system, showing a promising application potential in the field of organic wastewater treatment containing antibiotic contaminants.
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Affiliation(s)
- Zhenzhan Xu
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Xiaolin Ma
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Fengting He
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Mingjie Lu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Jinqiang Zhang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shuaijun Wang
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Pei Dong
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
| | - Chaocheng Zhao
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
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9
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Yu N, Bai J, Cao H, Yao H, Shi G, Yuan H, Xu Z, Luo F, Li M, Si R. Electrocatalysis coupled heterogeneous electro-Fenton like treatment of coal gasification wastewater using tourmaline as catalyst: process parameters and response surface. Environ Sci Pollut Res Int 2024; 31:20207-20221. [PMID: 38369660 DOI: 10.1007/s11356-024-32457-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/08/2024] [Indexed: 02/20/2024]
Abstract
Coal gasification technology is essential for realizing clean and efficient conversion of coal, as well as for reducing carbon emissions. However, coal gasification technology is accompanied by a large amount of coal gasification wastewater that is biodegradable. In this work, tourmaline was applied as a catalyst in electro-Fenton like process for treating coal gasification wastewater. The optimal applied parameters of coal gasification wastewater were investigated as follows: current density of 90 mA cm-2, tourmaline dosage of 8 g L-1, electrode gap of 1 cm, and temperature at 25 °C; the COD removal ratio reached 91.24% after 240-min treatment. In addition, the current density and tourmaline dosage were further optimized by response surface method. The result was about current density with 82.4 mA cm-2 and catalyst with 7.57 g L-1; the predicted COD removal efficiency was 86.91%. Under the optimal parameters the actual COD removal efficiency was 88.25% a little high than the predicted value. To explore the reusability of tourmaline as Fenton reaction catalyst, five cycles of experiments were carried out. The result demonstrated that tourmaline could be used as catalyst for treating coal gasification wastewater by electro-Fenton like process.
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Affiliation(s)
- Naichuan Yu
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China.
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China.
| | - Junxue Bai
- School of Biological and Environmental Engineering, Tianjin Vocational Institute, Tianjin, 300410, China
| | - Hanfei Cao
- College of Food Science& Nutritional Engineering, China Agricultural University, Beijing, 100091, China
| | - Hao Yao
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Guangyao Shi
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Hao Yuan
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Zhilong Xu
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China
| | - Fuchen Luo
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Mingyu Li
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Rongmei Si
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China
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10
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Zhang J, Yang W, Liu X, Su F, Wang G, Zhan S, Li Y. Iron hydroxyphosphate electro-Fenton catalyst for efficient removal of sulfamethoxazole and resource recycling into slow-release fertiliser ammonium ferrous phosphate. Environ Res 2024; 244:117908. [PMID: 38092238 DOI: 10.1016/j.envres.2023.117908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
Although the electro-Fenton (EF) process is effective for wastewater treatment, recycling spent catalysts remain a major challenge. Therefore, we introduce a reuse strategy for spent catalysts where an iron hydroxyphosphate [Fe5(PO4)4(OH)3·2H2O] catalyst is utilized. Fe5(PO4)4(OH)3·2H2O obtained •OH and •O2- by activating in-situ produced H2O2, and the degradation rate of sulfamethoxazole reached 94.5% after 120 min and showed excellent stability (maintained above 90%) for 10 cycles. Finally, the used catalyst was converted into slow-release ammonium ferrous phosphate (NH4FePO4·H2O) fertiliser at a conversion rate of 85.6%. NH4FePO4·H2O significantly promoted plant and seed growth within 6 days, highlighting the contribution of the resource recycling of the spent catalyst. This study serves as a valuable reference for the efficient utilization of spent catalysts. This study successfully applied EF catalysts and explored the recycling of spent catalysts.
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Affiliation(s)
- Jinlong Zhang
- School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining, 810007, People's Republic of China; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Wenjing Yang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Xingyu Liu
- School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, People's Republic of China
| | - Fan Su
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300381, People's Republic of China
| | - Gang Wang
- School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining, 810007, People's Republic of China.
| | - Sihui Zhan
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, People's Republic of China
| | - Yi Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, People's Republic of China.
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11
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Li X, Yu Y, Zhang R, Guo W. Cobalt etched graphite felt electrode for enhanced removal of organic pollutant in aqueous solution with a solid polymer electrolyte. Environ Sci Pollut Res Int 2024; 31:18614-18624. [PMID: 38349493 DOI: 10.1007/s11356-024-32440-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 02/07/2024] [Indexed: 03/09/2024]
Abstract
In this study, cobalt etched graphite felt electrodes were produced using a simple etching technique. It was used in combination with a solid polymer electrolyte (SPE) for the degradation of the target contaminant Orange II by Electro-Fenton (EF) technique in low conductivity water. In this method, 94% of Orange II in low conductivity water was removed in 90 min. The characterization analysis substantiates the hypothesis that the electrodes produced exhibit a three-dimensional porous structure, augmented defect concentration, and enhanced electron transfer capability. In addition, the potential reaction mechanism was inferred from the radical quenching experiments, and hydroxyl radicals (·OH) were deemed the main reactive substances. The combination of cobalt etched graphite felt electrodes with SPE demonstrates remarkable efficacy in the treatment of organic wastewater characterized by low electrical conductivity.
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Affiliation(s)
- Xinyu Li
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Yanjun Yu
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Ruijuan Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Weilin Guo
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
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12
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Rai D, Sinha S. Characterization and electrochemical properties of TiO 2-rNTs/SnO 2-Sb/PbO 2 electrodes for the mineralization of persistent organic pollutants using anodic oxidation coupled Electro-Fenton treatment: Effect of precursor selection. Chemosphere 2024; 352:141307. [PMID: 38307338 DOI: 10.1016/j.chemosphere.2024.141307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/04/2024]
Abstract
The present study compares the effect of using different solvents on the electrochemical properties of the reduced TiO2 nanotubes (TiO2-rNTs) layered Ti/TiO2-rNTs/SnO2-Sb/PbO2 anodes. The electrodes are prepared using three different solvent-based precursors: (i) isopropanol, (ii) ethylene glycol and citric acid (Pechini method), and (iii) 2-hydroxyethylammonium acetate (2HEAA) ionic liquid (IL) via the thermal decomposition route. The decomposition mechanism of precursor solutions was explored using the thermogravimetric (TGA) analysis. Further, the physicochemical properties of the electrodes are examined using Field emission Scanning Electron microscopy (FE-SEM), X-ray diffraction spectroscopy (XRD), and X-ray photoelectron emission spectroscopy (XPS). The results revealed that solvents with higher viscosity and slower decomposition rates support better film uniformity and higher stability of the electrode. The TiO2 -rNTs bottom layer and PbO2 top layer helped obtain higher film stability, increased working potential window (2.2 V vs. SHE) of the electrode, and the repeatability of the results. The performance of different electrodes based on the precursor solution is found as IL ≫ Pechini > Isopropanol. 4-chlorophenol (4-CP) is used as a model pollutant to test the performance of IL-Ti/TiO2-rNTs/SnO2-Sb/PbO2 anode in an anodic oxidation (AO) coupled electro-Fenton (EF) treatment. Further, the reliability of the electrode is evaluated by mineralizing other persistent organic pollutants (POPs) like tetracyclin, phenol, 2-chlorophenol (2-CP), and 2,4-dichlorophenol (2,4-DCP). Under the optimized conditions, the proposed system was able to mineralize the tetracyclin, phenol, 2-CP, 2,4-DCP, and 4-CP up to 78.91, 82.07, 74.96, 78.78, and 69.3 %, respectively. Moreover, the degradation mechanism of chlorophenols is proposed.
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Affiliation(s)
- Devendra Rai
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.
| | - Shishir Sinha
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.
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13
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Yang Y, Wang R, Zhou J, Qiao S. Removal of ofloxacin using a porous carbon microfiltration membrane based on in-situ generated •OH. Environ Res 2024; 244:117837. [PMID: 38065381 DOI: 10.1016/j.envres.2023.117837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/21/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023]
Abstract
This study investigated the removal performance of ofloxacin (OFL) by a novel electro-Fenton enhanced microfiltration membrane. The membranes used in this study consisted of metal-organic framework derived porous carbon, carbon nanotubes and Fe2+, which were able to produce hydroxyl radicals (•OH) in-situ via reducing O2 to hydrogen peroxide. Herein, membrane filtration with bias not only concentrated the pollutants to the level that could be efficiently treated by electro-Fenton but also confined/retained the toxic intermediates within the membrane to ensure a prolonged contact time with the oxidants. After validated by experiments, the applied bias of -1.0 V, pH of 3 and electrolyte concentration of 0.1 M were the relatively optimum conditions for OFL degradation. Under these conditions, the average OFL removal rate could be reach 75% with merely 5% membrane flux loss after 4 cycles operation by filtrating 1 mg/L OFL. Via decarboxylation reaction, piperazinyl ring opening, dealkylation and ipso substitution reaction, etc., OFL could be gradually and efficiently degraded to intermediate products and even to CO2 by •OH. Moreover, the oxidation reaction was preferred to following first-order reaction kinetics. This research verified a possibility for antibiotic removal by electro-enhanced microfiltration membrane.
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Affiliation(s)
- Yue Yang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science & Technology, Nanjing, 210094, China; Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Ruiyu Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Jiti Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Sen Qiao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
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14
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Rabbani D, Dehghani R, Akbari H, Rahmani H, Ahmadi E, Bagheri A, Allahi S. Study on diazinon toxicity reduction by electro-Fenton process: A bioassay using daphnia magna. Heliyon 2024; 10:e25928. [PMID: 38380001 PMCID: PMC10877300 DOI: 10.1016/j.heliyon.2024.e25928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 01/26/2024] [Accepted: 02/05/2024] [Indexed: 02/22/2024] Open
Abstract
The realm of diazinon reduction from polluted water has witnessed a surge in the significance of advanced oxidation processes (AOPs) in recent times. However, there is a dearth of research focusing on the mitigation of its toxicity through AOPs. Thus, the primary objective of this study was to evaluate the effectiveness of the Electro-Fenton process (EFP) in the eradication and detoxification of diazinon in aqueous solutions. Synthetic wastewater samples with concentrations of 2, 2.5 and 3 mg/L were prepared. A total of 27 samples were determined using Box Behnken Design. Reaction time, pH and iron to hydrogen peroxide ratio (Fe2+/H2O2) were examined as operational parameters under a constant current of 5.4 amps. The quantification of diazinon concentration was performed using High-Performance Liquid Chromatography (HPLC). To evaluate the detoxification of diazinon, the Daphnia magna bioassay was employed as a methodology in this study. According to the results, the EFP could reduce the diazinon to zero and the LC50 values are increased by applying the process. The LC50 values for diazinon were determined using the Daphnia magna bioassay, considering initial concentrations of 2, 2.5, and 3 mg/L at a pH of 5, a reaction time of 15 min, and an iron to hydrogen peroxide molar ratio of 2. The recorded LC50 values were 3.039, 3.076, and 3.106, respectively, indicating the lowest frequency of cumulative death in Daphnia magna. In this case, after 96 h, only 3 cases (30%) of Daphnia magna death were observed. However, for all the mentioned concentrations of diazinon, after 96 h of exposure to samples without applying the Daphnia Magna death process, it was observed between 60 and 100%. Reducing the diazinon concentration and increasing the 96-h LC50 showed that the EFP can reduce the toxicity of diazinon on Daphnia Magna at the same time. Therefore, EFP can be considered a superior method with low ecotoxicity.
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Affiliation(s)
- Davarkhah Rabbani
- Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
- Social Determinants of Health (SDH) Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Rouhullah Dehghani
- Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
- Social Determinants of Health (SDH) Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Hossein Akbari
- Social Determinants of Health (SDH) Research Center, Kashan University of Medical Sciences, Kashan, Iran
- Department of Public Health and Biostatics, Kashan University of Medical Sciences, Kashan, Iran
| | - Hasan Rahmani
- Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
| | - Ehsan Ahmadi
- Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
| | - Amin Bagheri
- Department of Health, Safety and Environmental Management, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeid Allahi
- Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
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15
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Gökkuş Ö, Brillas E, Sirés I. Sequential use of a continuous-flow electrocoagulation reactor and a (photo) electro-Fenton recirculation system for the treatment of Acid Brown 14 diazo dye. Sci Total Environ 2024; 912:169143. [PMID: 38070549 DOI: 10.1016/j.scitotenv.2023.169143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/03/2023] [Accepted: 12/04/2023] [Indexed: 12/18/2023]
Abstract
The decolorization and TOC removal of solutions of Acid Brown 14 (AB14) diazo dye containing 50 mg L-1 of total organic carbon (TOC) have been first studied in a continuous-flow electrocoagulation (EC) reactor of 3 L capacity with Fe electrodes of ∼110 cm2 area each. Total loss of color with poor TOC removal was found in chloride, sulfate, and/or hydrogen carbonate matrices after 18 min of this treatment. The best performance was found using 5 anodes and 4 cathodes of Fe at 13.70 A and low liquid flow rate of 10 L h-1, in aerated 39.6 mM NaCl medium within a pH range of 4.0-10.0. The effluent obtained from EC was further treated by electro-Fenton (EF) using a 2.5 L pre-pilot flow plant, which was equipped with a filter-press cell comprising a Pt anode and an air-diffusion cathode for H2O2 electrogeneration. Operating with 0.10-1.0 mM Fe2+ as catalyst at pH 3.0 and 50 mA cm-2, a similar TOC removal of 68 % was found as maximal in chloride and sulfate media using the sequential EC-EF process. The EC-treated solutions were also treated by photoelectro-Fenton (PEF) employing a photoreactor with a 125 W UVA lamp. The sequential EC-PEF process yielded a much higher TOC reduction, close to 90 % and 97 % in chloride and sulfate media, respectively, due to the rapid photolysis of the final Fe(III)-carboxylate complexes. The formation of recalcitrant chloroderivatives from generated active chlorine limited the mineralization in the chloride matrix. For practical applications of this two-step technology, the high energy consumption of the UVA lamp in PEF could be reduced by using free sunlight.
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Affiliation(s)
- Ömür Gökkuş
- Department of Environmental Engineering, Erciyes University, 38039 Kayseri, Türkiye
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Ciència de Materials i Química Física, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Ciència de Materials i Química Física, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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16
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Zhao Y, Wang A, Ren S, Zhang Y, Zhang N, Song Y, Zhang Z. Activated carbon fiber as an efficient co-catalyst toward accelerating Fe 2+/Fe 3+ cycling for improved removal of antibiotic cefaclor via electro-Fenton process using a gas diffusion electrode. Environ Res 2024; 249:118254. [PMID: 38301762 DOI: 10.1016/j.envres.2024.118254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 02/03/2024]
Abstract
The electro-Fenton (EF) based on gas-diffusion electrodes (GDEs) reveals promising application prospective towards recalcitrant organics degradation because such GDEs often yields superior H2O2 generation efficiency and selectivity. However, the low efficiency of Fe2+/Fe3+ cycle with GDEs is always considered to be the limiting step for the EF process. In this study, activated carbon fiber (ACF) was firstly employed as co-catalyst to facilitate the performance of antibiotic cefaclor (CEC) decomposition in EF process. It was found that the addition of ACF co-catalyst achieved a rapid Fe2+/Fe3+ cycling, which significantly enhanced Fenton's reaction and hydroxyl radicals (•OH) generation. X-ray photoelectron spectroscopy (XPS) results indicated that the functional groups on ACF surface are related to the conversion of Fe3+ into Fe2+. Moreover, DMSO probing experiment confirmed the enhanced •OH production in EF + ACF system compared to conventional EF system. When inactive BDD and Ti4O7/Ti anodes were paired to EF system, the addition of ACF could significantly improve mineralization degree. However, a large amount of toxic byproducts, including chlorate (ClO3-) and perchlorate (ClO4-), were generated in these EF processes, especially for BDD anode, due to their robust oxidation capacity. Higher mineralization efficiency and less toxic ClO4- generation were obtained in the EF + ACF process with Ti4O7/Ti anode. This presents a novel alternative for efficient chloride-containing organic removal during wastewater remediation.
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Affiliation(s)
- Yue Zhao
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China.
| | - Aimin Wang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China.
| | - Songyu Ren
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Yanyu Zhang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Ni Zhang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Yongjun Song
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, China
| | - Zhongguo Zhang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, China
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17
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Yao Y, Yang J, Zhu C, Lu L, Fang Q, Xu C, He Z, Song S, Shen Y. Unveiling the metallic size effect on O2 adsorption and activation for enhanced electro-Fenton degradation of aromatic compounds. J Hazard Mater 2024; 462:132739. [PMID: 37856960 DOI: 10.1016/j.jhazmat.2023.132739] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/24/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023]
Abstract
Metal-atom-modified nitrogen-doped carbon materials (M-N-C) have emerged as promising candidates for electro-Fenton degradation of pollutants. Nonetheless, a comprehensive exploration of size-dependent M-N-C catalysts in the electro-Fenton process remains limited, posing challenges in designing surface-anchored metal species with precise sizes. Herein, a heterogeneous-homogeneous coupled electro-Fenton (HHC-EF) system was designed and various M-N-C catalysts anchored with Co single atoms (CoSA-N-C), Co clusters (CoAC-N-C), and Co nanoparticles (CoNP-N-C) were successfully synthesized and employed in an HHC-EF system. Intriguingly, CoAC-N-C achieved outstanding removal efficiencies of 99.9% for BPA and RhB within 10 and 15 min, respectively, with the fastest reaction kinetics (0.70 min-1 for BPA and 0.34 min-1 for RhB). Electron spin resonance and trapping experiments revealed that·OH played a crucial role in the HHC-EF process. Moreover, experiments and theoretical calculations revealed that the unique metallic size effect facilitate the in-situ electro-generation of H2O2. Specifically, the atomic interaction between neighboring Co atoms in clusters enhanced O2 adsorption and activation by strengthening the Co-N bond and transforming O2 adsorption configuration to the Yeager-type. This study provides valuable insights that could inspire the size-oriented metal-based catalyst design from the perspective of the potential atomic distance effect.
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Affiliation(s)
- Yanchi Yao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jingyi Yang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Chao Zhu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Lun Lu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China
| | - Qile Fang
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China
| | - Chao Xu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhiqiao He
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Shuang Song
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yi Shen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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18
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Song X, Zhang M, Xiu X, Wang C, Li P, Zang L, Song M, Xu C. Accelerated removal of sulfadiazine by heterogeneous electro-Fenton system with Pt-FeO X/graphene single-atom alloy cathodes. J Environ Manage 2024; 349:119541. [PMID: 37988893 DOI: 10.1016/j.jenvman.2023.119541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/02/2023] [Accepted: 11/04/2023] [Indexed: 11/23/2023]
Abstract
Heterogeneous electro-Fenton (EF) process is emerging as an attractive treatment technology for removal of sulfadiazine (SDZ), in which in situ generation of H2O2 and Fe(II) are crucial steps. In this study, Pt-FeOX/G was synthesized as a heterogeneous EF catalyst by incorporating Pt single atoms into a FeOX nanocrystal. The optimized Pt1-FeOX/G cathode exhibited an SDZ conversion of >90% within 30 min over a broad pH range (3-11). The Pt1-FeOX/G cathode under a strong alkaline medium exhibited very prominent selectivity to H2O2 via 2e- oxygen reduction reaction with a maximum H2O2 concentration of 211.93 mg L-1. The hydroxyl radicals in the cathodic chamber were mainly derived from the in situ conversion of generated H2O2 in the heterogeneous EF system. The structure-activity results of Pt-FeOX/G suggested that the SDZ removal efficiency was closely related to the decentralized morphology and electronic configuration of the Pt-FeOX microcrystalline structure. Three possible SDZ degradation pathways, dominated by S-N bond cleavage, were proposed based on the stage products. The toxicity of the major products was determined using the ecological structure-activity relationship model in conjunction with trophic aquatic organisms. This study demonstrated the feasibility of enhancing heterogeneous EF catalysis for antibiotic-polluted water using multifunctional single-atom alloy cathodes.
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Affiliation(s)
- Xiaozhe Song
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China.
| | - Minglu Zhang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China
| | - Xiaochen Xiu
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China
| | - Chunyu Wang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China
| | - Peiwei Li
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China
| | - Lihua Zang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China.
| | - Mingming Song
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China
| | - Chongqing Xu
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China.
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19
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Shao C, Ren S, Zhang Y, Wen Z, Zhang Z, Wang A. Insights into antibiotic cefaclor mineralization by electro-Fenton and photoelectro-Fenton processes using a Ti/Ti 4O 7 anode: Performance, mechanism, and toxic chlorate/perchlorate formation. Environ Res 2023; 238:117185. [PMID: 37742753 DOI: 10.1016/j.envres.2023.117185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
A comparative degradation of antibiotic cefaclor (CEC) between Ti/Ti4O7 and Ti/RuO2 anodes, in terms of degradation kinetics, mineralization efficiency, and formation of toxic chlorate (ClO3-) and perchlorate (ClO4-), was performed with electrochemical-oxidation (EO), electro-Fenton (EF), and photoelectro-Fenton (PEF) processes. Besides, CEC degradation by EF with boron-doped diamond (BDD) anode was also tested. Results showed CEC decays always followed pseudo-first-order kinetics, with increasing apparent rate constants in the sequence of EO < EF < PEF. The mineralization efficiency of the processes with Ti/Ti4O7 anode was higher than that of Ti/RuO2 anode, but slightly lower than that of BDD anode. Under the optimal conditions, 94.8% mineralization was obtained in Ti/Ti4O7-PEF, which was much higher than 64.4% in Ti/RuO2-PEF. The use of Ti/RuO2 gave no generation of ClO3- or ClO4-, while the use of Ti/Ti4O7 yielded a small amount of ClO3- and trace amounts of ClO4-. Conversely, the use of BDD led to the highest generation of ClO3- and ClO4-. The reaction mechanism was studied systematically by detecting the generated H2O2 and •OH. The initial N of CEC was released as NH4+ and, in smaller proportion, as NO3-. Four short-chain carboxylic acids and nine aromatic intermediates were also detected, a possible reaction sequence for CEC mineralization was finally proposed.
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Affiliation(s)
- Chaoran Shao
- School of the Environment, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, China
| | - Songyu Ren
- School of the Environment, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, China
| | - Yanyu Zhang
- School of the Environment, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, China
| | - Zhenjun Wen
- School of the Environment, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, China
| | - Zhongguo Zhang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, China
| | - Aimin Wang
- School of the Environment, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, China.
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20
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Clematis D, Skolotneva E, Cademartori D, Panizza M. Impact of catalyst, chelating agent and light irradiation on electro-Fenton performance under not optimal conditions. Chemosphere 2023; 344:140408. [PMID: 37827461 DOI: 10.1016/j.chemosphere.2023.140408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/09/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
Electro-Fenton is a promising game-changer for distributed wastewater treatments for the removal of recalcitrant compounds that it is possible to find in industrial effluent and looking for a water reuse approach. This electrochemical advanced oxidation process (EAOPs) is able to provide fast removal of organic compounds, like dyes, due to the in-situ H2O2 production and its reaction with Fe2+ to form hydroxyl radicals. The literature clearly reports that this reaction reaches its optimum in acid conditions (pH = 3) and low catalyst concentrations [Fe2+<0.5 mM]. This paper wants to investigate the effects of the shifting from optimal conditions on the removal of reactive black 5 (RB5), treating solutions which contain a higher amount of catalyst and a less acid pH. Textile effluents usually contain also other metals able to act as catalyst for Fenton reaction, like copper. Here its activity has been investigated as well as the possible synergistic effect with Fe2+. The results confirm that copper can enhance RB5 removal, especially in those conditions critical for ferrous cation. In the second part, possible process modifications to overcome the issues introduced by unfavourable operating conditions (pH > 3 and Fe2+ > 0.5 mM) are considered, such as the usage of a chelating agent (EDTA) and the application of a light source. The results show the positive impact of these two system modifications highlighting the possibility to enlarge the application window of electro-Fenton systems.
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Affiliation(s)
- Davide Clematis
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy
| | - Ekaterina Skolotneva
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy
| | - Davide Cademartori
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy
| | - Marco Panizza
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy.
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21
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Jennyfer DA, Jose LR, Fiderman MM. Scientific and academic contributions of professor Enric Brillas through an analysis social network analysis and data science. Chemosphere 2023; 345:140466. [PMID: 37866502 DOI: 10.1016/j.chemosphere.2023.140466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/02/2023] [Accepted: 10/14/2023] [Indexed: 10/24/2023]
Abstract
This work describes the scientific and academic contributions of Professor Enric Brillas through the analysis of Social Network Analysis and data science. The study examines the research collaborations and co-authorship networks of Professor Brillas, indicating his active engagement and up-to-date collaborations with key co-authors, including Ignasi Sirés and Pere.L. Cabot. The analysis also reveals Professor Brillas' significant research focus on water treatment and related concepts such as oxidation-reduction, Fenton reactions, photoelectro-Fenton, and electrocatalysis. Furthermore, the most cited and recent articles by Professor Brillas are identified and discusses. Overall, the research demonstrates Professor Brillas' notable contributions to the field of electrochemical water treatment and highlights his ongoing research and collaborations in this area.
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Affiliation(s)
- Diaz-Angulo Jennyfer
- Investigación y desarrollo tecnológico en tratamiento de aguas, Modelado de procesos y gestión de residuos, GITAM, Colombia; Laboratorio de simulación y procesos-SIMPROLAB, Turbaco, Colombia
| | - Lara-Ramos Jose
- Laboratorio de simulación y procesos-SIMPROLAB, Turbaco, Colombia; Escuela de Ingeniería Química, Universidad del Valle, Ciudad Universitaria Meléndez-A.A., Cali, 23360, Colombia
| | - Machuca-Martínez Fiderman
- Escuela de Ingeniería Química, Universidad del Valle, Ciudad Universitaria Meléndez-A.A., Cali, 23360, Colombia.
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22
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Keyikoğlu R, Khataee A, Yoon Y. Enhanced generation of reactive radicals and electrocatalytic oxidation of levofloxacin using a trimetallic CuFeV layered double hydroxide-containing electrode. Chemosphere 2023; 340:139817. [PMID: 37586485 DOI: 10.1016/j.chemosphere.2023.139817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/03/2023] [Accepted: 08/12/2023] [Indexed: 08/18/2023]
Abstract
In Electro-Fenton (EF) processes, the use of iron as a catalyst under acidic conditions results in increased costs and potential secondary pollution. To address these issues, we developed a CuFeV layered double hydroxide (LDH) coating on graphite felt (GF) (CuFeV LDH@GF) that offers an effective performance across a broad pH range without causing metal pollution. The CuFeV LDH@GF cathode exhibited a good oxygen reduction performance, high stability, and an efficient removal of levofloxacin (LEV) over a wide pH range (pH = 3-10). The simultaneous presence of Cu2+/Cu3+, Fe2+/Fe3+, and V4+/V5+ redox pairs played a crucial role in facilitating interfacial electron transfer, thereby enhancing the production and subsequent activation of H2O2 within the system. The apparent rate constant (kapp) of LEV removal under neutral conditions with the CuFeV LDH@GF electrode was more than twice that of the raw GF electrode. This improvement can be attributed to the CuFeV LDH coating, which increased the generation of hydroxyl radicals (•OH) from 0.64 to 1.27 mM. Importantly, the CuFeV LDH@GF electrode maintained its efficiency and stability even after 10 reuse cycles. Additionally, GC-MS analyses revealed the degradation of intermediate compounds, which included cyclic and aliphatic compounds. This study provides significant insights into the synergistic effects of trimetallic LDHs, contributing to the development of high-performance cathodes.
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Affiliation(s)
- Ramazan Keyikoğlu
- Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400, Gebze, Turkey; Department of Environmental Engineering, Helmholtz Centre for Environmental Research - UFZ, 04318 Leipzig, Germany
| | - Alireza Khataee
- Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400, Gebze, Turkey; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Yeojoon Yoon
- Department of Environmental and Energy Engineering, Yonsei University, Wonju, Republic of Korea
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23
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Ghaffarian Khorram A, Fallah N, Nasernejad B, Afsham N, Esmaelzadeh M, Vatanpour V. Electrochemical-based processes for produced water and oily wastewater treatment: A review. Chemosphere 2023; 338:139565. [PMID: 37482313 DOI: 10.1016/j.chemosphere.2023.139565] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
The greatest volume of by-products produced in oil and gas recovery operations is referred to as produced water and increasing environmental concerns and strict legislations on discharging it into the environment cause to more attention for focusing on degradation methods for treatment of produced water especially electrochemical technologies. This article provides an overview of electrochemical technologies for treating oily wastewater and produced water, including: electro-coagulation, electro-Fenton, electrochemical oxidation and electrochemical membrane reactor as a single stage and combination of these technologies as multi-stage treatment process. Many researchers have carried out experiments to examine the impact of various factors such as material (i.e, electrode material) and operational conditions (i.e., potential, current density, pH, electrode distance, and other factors) for organic elimination to obtain the high efficiency. Results of each method are reviewed and discussed according to these studies, comprehensively. Furthermore, several challenges need to be overcome and perspectives for future study are proposed for each method.
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Affiliation(s)
| | - Narges Fallah
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - Bahram Nasernejad
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Neda Afsham
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mahdi Esmaelzadeh
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Vahid Vatanpour
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, Tehran, Iran; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Turkey.
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24
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Nadali Pishnamaz HM, Ranjbar E, Baghdadi M. Application of iron-intercalated graphite for modification of nickel foam cathode in heterogeneous electro-Fenton system: Bisphenol A removal from water at neutral pH. Chemosphere 2023; 339:139787. [PMID: 37567264 DOI: 10.1016/j.chemosphere.2023.139787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 08/01/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
The presence of bisphenol A (BPA) in natural waters can be highly harmful due to its high persistence and adverse effects, raising concerns to remove this hazardous compound. Herein, an electro-Fenton system is proposed to eliminate BPA, wherein the iron source in the Fenton reaction is provided by its intercalation into the carbon layers of graphite. The produced heterogeneous catalyst was then coated onto the nickel foam serving as a cathode. The magnetic graphite intercalated compound (mGIC) and the modified cathode (before and after experiments) were characterized by FE-SEM, EDX, XPS, and XRD analyses. Some effective parameters, namely pH (3-9), current density (0-20 mA cm-2), and BPA concentration (0.5-20 mg L-1) were studied. At pH 3, the removal of BPA was 95.52%, and under neutral circumstances, the BPA and TOC removals were 85.70 and 58.12%, respectively at the initial BPA concentration of 10 mg L-1. The proposed system was also applied to several water sources spiked with BPA at the concentration of 5 mg L-1 under neutral pH, which exhibited considerable removal of 99.74%, 99.72%, and 92.70% for groundwater, municipal effluent wastewater, and tap water, respectively. The proposed system was applied for 15 consecutive cycles without showing significant changes in BPA removal, indicating its excellent stability and reusability. Furthermore, based on the analysis of intermediates, a possible decomposition pathway was proposed, indicating a reduction in overall toxicity. By using the proposed heterogeneous electro-Fenton system, iron waste is avoided, and operational costs of treatment can be reduced due to the absence of iron sludge production and catalyst loss.
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Affiliation(s)
| | - Ehsan Ranjbar
- School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran; German Environment Agency (UBA), Section II 3.3, Schichauweg 58, 12307 Berlin, Germany; Chair of Water Treatment, Technische Universität Berlin, KF4, Str. des 17. Juni 135, 10623 Berlin, Germany.
| | - Majid Baghdadi
- Department of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, Tehran, Iran.
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25
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Nidheesh PV, Mousset E, Thiam A. Recent advancements in peroxicoagulation process: An updated review. Chemosphere 2023; 339:139627. [PMID: 37487987 DOI: 10.1016/j.chemosphere.2023.139627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/28/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023]
Abstract
The present article describes the recent advancements (since 2018) in peroxicoagulation (PC) process, which was introduced by Professor Enric Brillas and his group in 1997. Instead of checking the efficiency of PC process to degrade a targeted pollutant in synthetic wastewater, researchers started testing its efficacy for the treatment of complex real wastewater. Applications like disinfection and removal of heavy metals as well as oxidative removal of arsenite from water were tested recently. To improve the efficiency of PC process, modifications were made for electrode materials (both anode and cathode) and electrolytic cells. Performance of PC process in combination with other treatment technologies is also discussed.
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Affiliation(s)
- P V Nidheesh
- Environmental Impact and Sustainability Division, CSIR - National Environmental Engineering Research Institute, Nagpur, Maharashtra, India.
| | | | - Abdoulaye Thiam
- Programa Institucional de Fomento a La Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana, Santiago, Chile.
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26
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Pacheco-Álvarez M, Fuentes-Ramírez R, Brillas E, Peralta-Hernández JM. Assessing the electrochemical degradation of reactive orange 84 with Ti/IrO 2-SnO 2-Sb 2O 5 anode using electrochemical oxidation, electro-Fenton, and photoelectro-Fenton under UVA irradiation. Chemosphere 2023; 339:139666. [PMID: 37532204 DOI: 10.1016/j.chemosphere.2023.139666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/04/2023]
Abstract
Today, water shortage problems around the world have forced the search for new treatment alternatives, in this context, electrochemical oxidation technology is a hopeful process for wastewater treatment, although it is still needed exploration of new efficient and economically viable electrode materials. In this way, mixed metal oxide anodes look like promising alternatives but their preparation is still a significant point to study, searching for finding low-cost materials to improve electrocatalytic efficiencies. In an exploration of this kind of highly efficient materials, this work presents the results obtained using an MMO Ti/IrO2-SnO2-Sb2O5 anode. All the prepared anodes exhibited excellent physical and electrochemical properties. The electrochemical oxidation of 100 mL and 200 mg L-1 Reactive Orange 84 (RO 84) diazo dye was studied using 3 cm2 of such synthesized anodes by applying current densities of 25, 50, and 100 mA cm-2. Faster and more efficient electrochemical oxidation occurred at 100 mA cm-2 with 50 mM of Na2SO4 + 10 mM NaCl as supporting electrolyte at pH 3.0. The degradation and mineralization processes of the above solution were enhanced with the electro-Fenton process with 0.05 mM Fe2+ and upgraded using photoelectron-Fenton with UVA light. This process yielded 91% COD decay with a low energy consumption of 0.1137 kWh (g COD)-1 at 60 min. The evolution of a final carboxylic acid like oxalic was followed by HPLC analysis. The Ti/IrO2-SnO2-Sb2O5 is then an efficient and low-cost anode for the photoelectro-Fenton treatment of RO 84 in a chloride and sulfate media.
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Affiliation(s)
- Martin Pacheco-Álvarez
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Cerro de La Venada S/n, Pueblito de Rocha, 36040, Guanajuato, Mexico
| | - Rosalba Fuentes-Ramírez
- Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/n, 36050, Guanajuato, Mexico
| | - Enric Brillas
- Laboratori D'Electroquímica Dels Materials I Del Medi Ambient, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí I Franquès 1-11, Barcelona, CP 08028, Spain
| | - Juan M Peralta-Hernández
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Cerro de La Venada S/n, Pueblito de Rocha, 36040, Guanajuato, Mexico.
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27
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Ramírez-Valencia LD, Bailón-García E, Moral-Rodríguez AI, Carrasco-Marín F, Pérez-Cadenas AF. Carbon Gels-Green Graphene Composites as Metal-Free Bifunctional Electro-Fenton Catalysts. Gels 2023; 9:665. [PMID: 37623120 PMCID: PMC10454076 DOI: 10.3390/gels9080665] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023] Open
Abstract
The Electro-Fenton (EF) process has emerged as a promising technology for pollutant removal. However, the EF process requires the use of two catalysts: one acting as an electrocatalyst for the reduction of oxygen to H2O2 and another Fenton-type catalyst for the generation of ·OH radicals from H2O2. Thus, the search for materials with bifunctionality for both processes is required for a practical and real application of the EF process. Thus, in this work, bifunctional electrocatalysts were obtained via doping carbon microspheres with Eco-graphene, a form of graphene produced using eco-friendly methods. The incorporation of Eco-graphene offers numerous advantages to the catalysts, including enhanced conductivity, leading to more efficient electron transfer during the Electro-Fenton process. Additionally, the synthesis induced structural defects that serve as active sites, promoting the direct production of hydroxyl radicals via a 3-electron pathway. Furthermore, the spherical morphology of carbon xerogels enhances the accessibility of the reagents to the active sites. This combination of factors results in the effective degradation of Tetracycline (TTC) using metal-free catalysts in the Electro-Fenton process, achieving up to an impressive 83% degradation without requiring any other external or additional catalyst.
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Affiliation(s)
- Lilian D. Ramírez-Valencia
- Materiales Polifuncionales Basados en Carbono (UGR-Carbon), Dpto. Química Inorgánica-Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente-Universidad de Granada (UEQ-UGR), ES18071 Granada, Spain; (E.B.-G.); (A.I.M.-R.); (F.C.-M.)
| | | | | | | | - Agustín F. Pérez-Cadenas
- Materiales Polifuncionales Basados en Carbono (UGR-Carbon), Dpto. Química Inorgánica-Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente-Universidad de Granada (UEQ-UGR), ES18071 Granada, Spain; (E.B.-G.); (A.I.M.-R.); (F.C.-M.)
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28
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Khavari Kashani MR, Wang Q, Khatebasreh M, Li X, Sheikh Asadi AM, Boczkaj G, Ghanbari F. Sequential treatment of landfill leachate by electrocoagulation/aeration, PMS/ZVI/UV and electro-Fenton: Performance, biodegradability and toxicity studies. J Environ Manage 2023; 338:117781. [PMID: 37015143 DOI: 10.1016/j.jenvman.2023.117781] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 03/14/2023] [Accepted: 03/19/2023] [Indexed: 06/19/2023]
Abstract
This study presents a systematic study on sequential treatment of highly resistant landfill leachate by electrocoagulation (EC)/aeration, sulfate radical advanced oxidation process (SR-AOP) and electro-Fenton (EF). In case of SR-AOP, peroxymonosulfate (PMS) catalyzed by zero valent iron (ZVI) and ultraviolet irradiation (UV) system was developed. Treatment process was optimized in respect to COD removal. Analysis of results revealed that sequential application of EC/aeration, PMS/ZVI/UV, and EF processes provide an extraordinary performance and meet the environmental regulations. The source of iron for EF process was provided from previous process reducing the cost of sequential process. Separately, EC/aeration (inlet COD = 4040 mg/L), PMS/ZVI/UV (inlet COD = 1560 mg/L), and EF (inlet COD = 471 mg/L) removed 61, 69 and 82% of COD respectively. Overall, sequential processes of EC/aeration, PMS/ZVI/UV and EF could remove the COD, TOC and ammonia of the landfill leachate around 98%, 93% and 94%, respectively. The comparison of different sequences of following processes indicated that current configuration (EC/aeration-PMS/ZVI/UV-EF) could meet the discharge standards. Furthermore, humification degree was significantly improved after oxidative processes. Biodegradability study was also performed by means of BOD/COD, average oxidation state (AOS), and Zahn-Wellens test, and the best results associated with these indices were obtained 0.56, 2.37, and over 98%, respectively. Phytotoxicity of leachate was remarkably reduced and the final effluent can be considered as a non-phytotoxic wastewater.
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Affiliation(s)
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, 2007, Australia
| | - Masoumeh Khatebasreh
- Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Xuan Li
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, 2007, Australia
| | - Amir Mohammad Sheikh Asadi
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Department of Sanitary Engineering, Gdansk, Poland
| | - Grzegorz Boczkaj
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Department of Sanitary Engineering, Gdansk, Poland; EkoTech Center, Gdansk University of Technology, G. Narutowicza St. 11/12, Gdansk, 80-233, Poland.
| | - Farshid Ghanbari
- Research Center for Environmental Contaminants (RCEC), Abadan University of Medical Sciences, Abadan, Iran.
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29
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Orimolade BO, Oladipo AO, Idris AO, Usisipho F, Azizi S, Maaza M, Lebelo SL, Mamba BB. Advancements in electrochemical technologies for the removal of fluoroquinolone antibiotics in wastewater: A review. Sci Total Environ 2023; 881:163522. [PMID: 37068672 DOI: 10.1016/j.scitotenv.2023.163522] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/24/2023] [Accepted: 04/11/2023] [Indexed: 06/01/2023]
Abstract
In recent times, the need to make water safer and cleaner through the elimination of recalcitrant pharmaceutical residues has been the aim of many studies. Fluoroquinolone antibiotics such as ciprofloxacin, norfloxacin, enrofloxacin, and levofloxacin are among the commonly detected pharmaceuticals in wastewater. Since the presence of these pharmaceuticals in water bodies poses serious risks to living organisms, it is vital to adopt effective wastewater treatment techniques for their complete removal. Electrochemical technologies such as photoelectrocatalysis, electro-Fenton, electrocoagulation, and electrochemical oxidation have been established as techniques capable of the complete removal of organics including pharmaceuticals from wastewater. Hence, this review presents discussions on the recent progress (literature within 2018-2022) in the applications of common electrochemical processes for the degradation of fluoroquinolone antibiotics from wastewater. The fundamentals of these processes are highlighted while the results obtained using the processes are critically discussed. Furthermore, the inherent advantages and limitations of these processes in the mineralization of fluoroquinolone antibiotics are clearly emphasized. Additionally, appropriate recommendations are made toward improving electrochemical technologies for the complete removal of these pharmaceuticals with minimal energy consumption. Therefore, this review will serve as a bedrock for future researchers concerned with wastewater treatments to make informed decisions in the selection of suitable electrochemical techniques for the removal of pharmaceuticals from wastewater.
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Affiliation(s)
- Benjamin O Orimolade
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709 Johannesburg, South Africa.
| | - Adewale O Oladipo
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Private Bag X06, Florida 1710, South Africa
| | - Azeez O Idris
- UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology College of Graduates Studies, University of South Africa, Pretoria 392, South Africa; Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, Somerset West 7129, Western Cape, South Africa
| | - Feleni Usisipho
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709 Johannesburg, South Africa
| | - Shohreh Azizi
- UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology College of Graduates Studies, University of South Africa, Pretoria 392, South Africa; Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, Somerset West 7129, Western Cape, South Africa
| | - Malik Maaza
- UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology College of Graduates Studies, University of South Africa, Pretoria 392, South Africa; Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, Somerset West 7129, Western Cape, South Africa
| | - Sogolo L Lebelo
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Private Bag X06, Florida 1710, South Africa
| | - Bhekie B Mamba
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709 Johannesburg, South Africa
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30
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Rai D, Sinha S. Impact of different anode materials on electro-Fenton process and tannery wastewater treatment using sequential electro-Fenton and electrocoagulation. Chemosphere 2023; 336:139225. [PMID: 37356583 DOI: 10.1016/j.chemosphere.2023.139225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/29/2023] [Accepted: 06/13/2023] [Indexed: 06/27/2023]
Abstract
The influence of anode materials on the electrochemical treatment of tannery wastewater (TWW) was evaluated using Pt, Ti/RuO2-IrO2 (DSA), Ti/SnO2-Sb, Ti/PbO2, and Ti/SnO2-Sb/PbO2 electrodes. The comparison of the degradation mechanism of these electrodes in the electro-Fenton (EF) treatment was evaluated. The Ti/SnO2-Sb/PbO2 anode was efficient, with high electrocatalytic activity, stability, and reproducibility of the degradation results. Further, the study was extended to define the ability of sequential EF and electrocoagulation (EC) processes to clean TWW. The EC treatment was conducted using Al electrodes, and the performance of the combined treatment was evaluated by the removal of chemical oxygen demand (COD), turbidity, total suspended solids (TSS), sulfide, and Cr removal. The role of chlorides and sulfate salts during both treatments was evaluated by monitoring the concentration changes of these anions during the whole treatment using ion chromatography (IC). A sequential 1.5 h EF and 1 h EC treatment were applied to achieve a satisfactory degradation of (81.2 ± 3.9)% COD, >98% Cr, >99% turbidity, TSS, and sulfide removal. Additionally, the combined treatment was found to be more efficient towards the COD removal, achieving about 22.5% higher COD removal consuming almost the same amount of electrical energy.
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Affiliation(s)
- Devendra Rai
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Shishir Sinha
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
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31
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Casado J. Minerals as catalysts of heterogeneous Electro-Fenton and derived processes for wastewater treatment: a review. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27776-7. [PMID: 37266777 DOI: 10.1007/s11356-023-27776-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
Advanced oxidation processes (AOPs) such as Fenton's reagent, which generates highly reactive oxygen species, are efficient in removing biorefractory organic pollutants from wastewater. However, Fenton's reagent has drawbacks such as the generation of iron sludge, high consumption of H2O2, and the need for pH control. To address these issues, Electro-Fenton (EF) and heterogeneous Electro-Fenton (HEF) have been developed. HEF, which uses solid catalysts, has gained increasing attention, and this review focuses on the use of mineral catalysts in HEF and derived processes. The reviewed studies highlight the advantages of using mineral catalysts, such as efficiency, stability, affordability, and environmental friendliness. However, obstacles to overcome include the agglomeration of unsupported nanoparticles and the complex preparation techniques and poor stability of some catalyst-containing cathodes. The review also discusses the optimal pH range and dosage of the heterogeneous catalysts and compares the performance of iron sulfides versus iron oxides. Although natural minerals appear to be the best choice for effluents at pH>4, no scale-up reports have been found. The need for further development in this field and the importance of considering the environmental impact of trace toxic metals or catalytic nanoparticles in the treated water on the receiving ecosystem is emphasized. Finally, the article acknowledges the high energy consumption of HEF processes at the lab scale and calls for their performance development to achieve environmentally friendly and cost-effective results using real wastewaters on a pilot scale.
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Affiliation(s)
- Juan Casado
- Facultad de Ciencias y Biociencias, Universidad Autónoma de Barcelona, Campus UAB s/n, 08038, Bellaterra, Barcelona, Spain.
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32
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Xiao H, Hao Y, Wu J, Meng X, Feng F, Xu F, Luo S, Jiang B. Differentiating the reaction mechanism of three-dimensionally electrocatalytic system packed with different particle electrodes: Electro-oxidation versus electro-fenton. Chemosphere 2023; 325:138423. [PMID: 36934480 DOI: 10.1016/j.chemosphere.2023.138423] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/06/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Recently, there are still some controversial mechanisms of the 3D electrocatalytic oxidation system, which would probably confound its industrial application. From the conventional viewpoint, the Ti4O7 material may be the desired particle electrodes in the 3D system since its high oxygen evolution potential favors the production of •OH via H2O splitting reaction at the anode side of Ti4O7 particle electrodes. In fact, the incorporation of Ti4O7 particles showed phenol degradation of 88% and COD removal of 51% within 120 min, under the optimum conditions at energy consumption of 0.668 kWh g-1 COD, the performance of which was much lower than those in many previous literatures. In contrast, the prepared carbon black-polytetrafluoroethylene composite (CB-PTFE) particles with abundant oxygen-containing functional groups could yield considerable amounts of H2O2 (200 mg L-1) in the 3D reactor and achieved a complete degradation of phenol and COD removal of 80% in the presence of Fe2+, accompanying a low energy consumption of only 0.080 kWh g-1 COD. It was estimated that only 20% of Ti4O7 particles near the anode attained the potential over 2.73 V/SCE at 30 mA cm-2 based on the potential test and simulation, responsible for the low yield of •OH via the H2O splitting on Ti4O7 (1.74 × 10-14 M), and the main role of Ti4O7 particle electrodes in phenol degradation was through direct oxidation. For the CB-PTFE-based 3D system, current density of 10 mA cm-2 was sufficient for all the CB-PTFE particles to attain cathodic potential of -0.67 V/SCE, conducive to the high yield of H2O2 and •OH (9.11 × 10-14 M) in the presence of Fe2+, and the •OH-mediated indirect oxidation was mainly responsible for the phenol degradation. Generally, this study can provide a deep insight into the 3D electrocatalytic oxidation technology and help to develop the high-efficiency and cost-efficient 3D technologies for industrial application.
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Affiliation(s)
- Huiji Xiao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, PR China
| | - Yongjie Hao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, PR China
| | - Jingli Wu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, PR China
| | - Xianzhe Meng
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, PR China
| | - Fei Feng
- Shandong Tiantai Environmental Technology Co., Ltd., Jinan, PR China
| | - Fengqi Xu
- SunRui Marine Environment Engineering Company Ltd, Qingdao, 266033, PR China
| | - Siyi Luo
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, PR China
| | - Bo Jiang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, PR China.
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Wang A, Jiang Y, Yan Y, Bu L, Wei Z, Spinney R, Dionysiou DD, Xiao R. Mechanistic and quantitative profiling of electro-Fenton process for wastewater treatment. Water Res 2023; 235:119838. [PMID: 36921358 DOI: 10.1016/j.watres.2023.119838] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Electro-Fenton (EF) process represents an energy-efficient and scalable advanced oxidation technology (AOT) for micropollutants removal in wastewaters. However, mechanistic profiling and quantitation of contribution of each subprocess (i.e., adsorption at electrode, coagulation, radical oxidation, electrode oxidation/reduction, and H2O2 oxidation) to the overall degradation are substantially unclear, resulting in difficulty in tunability and optimization for different treatment scenarios. In this study, we investigated degradation kinetics of a target micropollutant in an EF system. The contribution of all possible subprocesses was elucidated by comparing the observed degradation rate in the EF system with the sum of the kinetics in each subprocess. The results indicated that the overall degradation can be attributed to the synergistic action of the above-mentioned subprocesses. The radical oxidation accounts for 87% elimination, followed by electrode reoxidation/reduction of 7.7%. These results not only advance the fundamental understanding of synergistic effect in EF system, but also open new possibilities to optimize these techniques for better scalability. In addition, the methodology in this study could potentially boost the in-depth exploration of subprocess contribution in other Fenton-like systems.
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Affiliation(s)
- Anliu Wang
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Ying Jiang
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Yiqi Yan
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Lingjun Bu
- Hunan Engineering Research Center of Water Security Technology and Application, College of Civil Engineering, Hunan University, Changsha 410082, China
| | - Zongsu Wei
- Centre for Water Technology (WATEC) & Department of Biological and Chemical Engineering, Aarhus University, Nørrebrogade 44, 8000 Aarhus C, Denmark
| | - Richard Spinney
- Department of Chemistry and Biochemistry, the Ohio State University, Columbus, Ohio, 43210, U.S.A
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, Ohio, 45221, U.S.A
| | - Ruiyang Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China.
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Zheng L, Xiong Y, Gao Y, Yin F, Szczygiełda M, Krajewska M, Vo PHN, Jiang C, Liu H. Tailoring the draw solution chemistry in the integrated electro-Fenton and forward osmosis for enhancing emerging contaminants removal: Performance, DFT calculation and degradation pathway. Sci Total Environ 2023; 872:162155. [PMID: 36773919 DOI: 10.1016/j.scitotenv.2023.162155] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/20/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Integrated electro-Fenton and forward osmosis is capable to simultaneously separate emerging contaminants and degrade accumulated ones. Thus, an understanding of how draw solution chemistry in forward osmosis influences electro-Fenton is vital for maximizing overall treatment. Therefore, this study aimed to determine the transport behavior of four trace organic contaminants (TrOCs) including Diuron, Atrazine, DEET and Sulfamethoxazole under several influencing factors. Alkalic NaCl severely deteriorated degradation because of the less generation of OH caused by the interfered iron redox cycle. pH-neutral NaCl resulted in the highest reverse salt flux, namely possible largest production of active chlorine, therefore leading to the highest degradation. Compared to NaCl, Na2SO4 presented a significant lower reverse diffusion due to the larger hydrated radius of SO42- than Cl-. Meanwhile, the large consumption of OH by SO42- decreased degradation. Dissolved organic matters in the secondary effluent acted as the scavenger for OH and resulted in a degradation decline. Water extraction resulted from forward osmosis deteriorated degradation kinetics of all compounds except Sulfamethoxazole. On the other hand, Density functional theory calculations and identified intermediates contributed to propose the possible degradation pathways for each TrOC in terms of understanding TrOCs removal mechanism.
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Affiliation(s)
- Lei Zheng
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
| | - Yanfang Xiong
- College of Resource and Environment, Southwest University, Chongqing 400715, PR China
| | - Yimeng Gao
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
| | - Fengjun Yin
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
| | - Mateusz Szczygiełda
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
| | - Martyna Krajewska
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
| | - Phong H N Vo
- Climate Change Cluster, Faculty of Science, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia
| | - Changsheng Jiang
- College of Resource and Environment, Southwest University, Chongqing 400715, PR China
| | - Hong Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China.
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35
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Girón-Navarro R, Arias AN, Linares-Hernández I, Martínez-Miranda V, Teutli-Sequeira EA, Lobato J, Rodrigo MA. Treatment of gaseous streams polluted with H 2S: Comparison of electrolytic and electro-Fenton assisted absorption processes. Chemosphere 2023; 323:138254. [PMID: 36858121 DOI: 10.1016/j.chemosphere.2023.138254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
H2S is a gaseous compound that contributes to air pollution. In this work, the electrochemical oxidation treatment of gaseous streams polluted with H2S is evaluated using a jet mixer and electrochemical cell device, in which the performance of electrolytic and electro-Fenton assisted absorption processes are compared. Results demonstrate the feasibility of both processes to remove H2S, reaching coulombic efficiencies of nearly 100% in the electrolytic assisted absorption, and 70-80% in the electro-Fenton assisted absorption. Aqueous solutions containing phosphate salts as electrolyte were found to be suitable as absorbents for the process. Efficiency in the cathodic production of H2O2 in these solutions using the experimental device was found to be as high as 32.8% (1.184 mgH2O2/min) at 12 °C and atmospheric pressure. Sequential formation of SO2 and SO3 is obtained by the oxidation of H2S contained in the gas. These species are hydrolysed, and a part remained in the absorbent as SO32- and SO42-, while the rest is dragged in the outlet gas. SO3 production is promoted by electrolytic assisted absorption and polysulphides by the electro-Fenton technology. Low concentrations of elemental sulphur are detected in the solid suspensions formed during the process.
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Affiliation(s)
- Rocío Girón-Navarro
- Instituto Interamericano de Tecnología y Ciencias de Agua (IITCA), Universidad Autónoma del Estado de México, Km.14.5, carretera Toluca-Atlacomulco, C.P 50200, Toluca, Estado de México, Mexico
| | - Andrea N Arias
- Department of Chemical Engineering. Faculty of Chemical Sciences and Technologies. University of Castilla La Mancha. Campus Universitario, s/n 13071, Ciudad Real, Spain
| | - Ivonne Linares-Hernández
- Instituto Interamericano de Tecnología y Ciencias de Agua (IITCA), Universidad Autónoma del Estado de México, Km.14.5, carretera Toluca-Atlacomulco, C.P 50200, Toluca, Estado de México, Mexico
| | - Verónica Martínez-Miranda
- Instituto Interamericano de Tecnología y Ciencias de Agua (IITCA), Universidad Autónoma del Estado de México, Km.14.5, carretera Toluca-Atlacomulco, C.P 50200, Toluca, Estado de México, Mexico
| | - Elia Alejandra Teutli-Sequeira
- Instituto Interamericano de Tecnología y Ciencias de Agua (IITCA), Universidad Autónoma del Estado de México, Km.14.5, carretera Toluca-Atlacomulco, C.P 50200, Toluca, Estado de México, Mexico
| | - Justo Lobato
- Department of Chemical Engineering. Faculty of Chemical Sciences and Technologies. University of Castilla La Mancha. Campus Universitario, s/n 13071, Ciudad Real, Spain
| | - Manuel A Rodrigo
- Department of Chemical Engineering. Faculty of Chemical Sciences and Technologies. University of Castilla La Mancha. Campus Universitario, s/n 13071, Ciudad Real, Spain.
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36
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Zeng G, Wang J, Dai M, Meng Y, Luo H, Zhou Q, Lin L, Zang K, Meng Z, Pan X. Natural iron minerals in an electrocatalytic oxidation system and in situ pollutant removal in groundwater: Applications, mechanisms, and challenges. Sci Total Environ 2023; 871:161826. [PMID: 36708820 DOI: 10.1016/j.scitotenv.2023.161826] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/04/2023] [Accepted: 01/21/2023] [Indexed: 06/18/2023]
Abstract
Natural iron-bearing minerals are widely distributed in the environment and show prominent catalytic performance in pollutant removal. This work provides an overview of groundwater restoration technologies utilizing heterogeneous electro-Fenton (HEF) techniques with the aid of different iron forms as catalysts. In particular, applications of natural iron-bearing minerals in groundwater in the HEF system have been thoroughly summarized from either the view of organic pollutant removal or degradation. Based on the analysis of the catalytic mechanism in the HEF process by pyrite (FeS2), goethite (α-FeOOH), and magnetite (Fe3O4) and the geochemistry analysis of these natural iron-bearing minerals in groundwater, the feasibility and challenges of HEF for organic degradation by using typical iron minerals in groundwater have been discussed, and natural factors affecting the HEF process have been analyzed so that appropriate in situ remedial measures can be applied to contaminated groundwater.
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Affiliation(s)
- Ganning Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Ocean Space Resource Management Technology, MNR, Hangzhou 310012, China
| | - Ji Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Mengzheng Dai
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yutong Meng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hongwei Luo
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qian Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Liangyu Lin
- Key Laboratory of Ocean Space Resource Management Technology, MNR, Hangzhou 310012, China; Zhejiang Academic of Marine Science, Hangzhou 310012, China
| | - Kunpeng Zang
- Zhejiang Carbon Neutral Innovation Institute, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhu Meng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiangliang Pan
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
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37
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Zhao Y, Cui J, Sarrouf S, Hojabri S, Alshawabkeh AN. Degradation of Ibuprofen in flow-through system by the Electro-Fenton Process activated by two iron sources. Res Sq 2023:rs.3.rs-2608922. [PMID: 37066367 PMCID: PMC10104209 DOI: 10.21203/rs.3.rs-2608922/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
The electrochemical degradation of ibuprofen (IBP) by electro-Fenton process has been studied in a flow-through system by evaluating the performance of two different iron sources, sacrificial cast iron anode and FeSO4 salt. The effect of operating conditions, including initial IBP concentration, cast iron anode location, initial FeSO4 concentration, applied current, the split current on the iron anode, solution pH, and flow rate on the efficacy of the process was evaluated. The sequence of the electrodes significantly influences ibuprofen removal. When using cast iron anode as iron source, placing the iron anode upstream achieved the best IBP removal rate. Split current of 3 mA applied on the iron anode out of 120 mA total current is the optimum current for remove 1 mg/L of IBP under a flow rate of 3 mL/min. There is a linear correlation between the applied current and the Fe2+ concentration in the FeSO4-system. The initial IBP concentration does not influence the rate of Fenton reaction. Flow rate influences the degradation efficiency as high flow rate dilutes the concentration of OH radicals in the electrolyte. FeSO4-system was less affected by the flow rate compared to the iron anode-system as the concentration of the Fe2+ was steady and not diluted by the flow rate. Both systems prefer acidic operation conditions than neutral and alkaline conditions. Iron-anode can be used as an external Fe2+ supply for the treatment for iron-free. These findings contribute in several ways to our understanding of the electro-Fenton process under flow conditions and provide a basis for how to design the reactor for the water treatment.
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Affiliation(s)
- Yuwei Zhao
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, MA, USA
| | - Jiaxin Cui
- Changjiang Survey, Planning, Design and Research Co., Ltd., Wuhan 430010, Hubei, China
| | - Stephanie Sarrouf
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, MA, USA
| | - Shayan Hojabri
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, MA, USA
| | - Akram N. Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, MA, USA
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AlJaberi FY, Ahmed SA, Makki HF, Naje AS, Zwain HM, Salman AD, Juzsakova T, Viktor S, Van B, Le PC, La DD, Chang SW, Um MJ, Ngo HH, Nguyen DD. Recent advances and applicable flexibility potential of electrochemical processes for wastewater treatment. Sci Total Environ 2023; 867:161361. [PMID: 36610626 DOI: 10.1016/j.scitotenv.2022.161361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/23/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
This study examined >140 relevant publications from the last few years (2018-2021). In this study, classification was reviewed depending on the operation's progress. Electrocoagulation (EC), electrooxidation (EO), electroflotation (EF), electrodialysis (ED), and electro-Fenton (EFN) processes have received considerable attention. The type of action (individual or hybrid) for each electrochemical procedure was evaluated, and statistical analysis was performed to compare them as a new manner of reviewing cited papers providing a massive amount of information efficiently to the readers. Individual or hybrid operation progress of the electrochemical techniques is critical issues. Their design, operation, and maintenance costs vary depending on the in-situ conditions, as evidenced by surveyed articles and statistical analyses. This work also examines the variables affecting the elimination efficacy, such as the applied current, reaction time, pH, type of electrolyte, initial pollutant concentration, and energy consumption. In addition, owing to its efficacy in removing toxins, the hybrid activity showed a good percentage among the studies reviewed. The promise of each wastewater treatment technology depends on the type of contamination. In some cases, EO requires additives to oxidise the pollutants. EF and EFN eliminated lightweight organic pollutants. ED has been used to treat saline water. Compared to other methods, EC has been extensively employed to remove a wide variety of contaminants.
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Affiliation(s)
- Forat Yasir AlJaberi
- Chemical Engineering Department, College of Engineering, Al-Muthanna University, Al-Muthanna, Iraq.
| | - Shaymaa A Ahmed
- Chemical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
| | - Hasan F Makki
- Chemical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
| | - Ahmed Samir Naje
- College of Engineering, Al-Qasim Green University, Al-Qasim Province, 51001 Babylon, Iraq
| | - Haider M Zwain
- College of Engineering, Al-Qasim Green University, Al-Qasim Province, 51001 Babylon, Iraq
| | - Ali Dawood Salman
- Sustainability Solutions Research Lab, University of Pannonia, Veszprém, Hungary; Department of Chemical and Petroleum Refining Engineering, College of Oil and Gas Engineering, Basra University, Iraq
| | - Tatjána Juzsakova
- Sustainability Solutions Research Lab, University of Pannonia, Veszprém, Hungary
| | - Sebestyen Viktor
- Sustainability Solutions Research Lab, University of Pannonia, Veszprém, Hungary
| | - B Van
- Institute of Research and Development, Duy Tan University, 550000 Danang, Viet Nam; School of Medicine and Pharmacy, Duy Tan University, 550000 Danang, Viet Nam.
| | - Phuoc-Cuong Le
- The University of Danang-University of Science and Technology, 54 Nguyen Luong Bang, Danang 550000, Viet Nam.
| | - D Duong La
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 100000, Viet Nam
| | - S Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, Suwon 442-760, Republic of Korea
| | - Myoung-Jin Um
- Department of Civil Engineering, Kyonggi University, Suwon 442-760, Republic of Korea
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - D Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, Suwon 442-760, Republic of Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, HCM City 755414, Viet Nam.
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Wu F, Nan J, Wang T, Ge Z, Liu B, Chen M, Ye X. Highly selective electrosynthesis of H 2O 2 by N, O co-doped graphite nanosheets for efficient electro-Fenton degradation of p-nitrophenol. J Hazard Mater 2023; 446:130733. [PMID: 36630877 DOI: 10.1016/j.jhazmat.2023.130733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/24/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
The activity and selectivity of the cathode towards electrosynthesis of H2O2 are critical for electro-Fenton process. Herein, nickel-foam modified with N, O co-doped graphite nanosheets (NO-GNSs/Ni-F) was developed as a cathode for highly efficient and selective electrosynthesis of H2O2. Expectedly, the accumulation of H2O2 at pH= 3 reached 494.2 mg L-1 h-1, with the selectivity toward H2O2 generation reaching 93.0%. The synergistic effect of different oxygen-containing functional groups and N species on the performance and selectivity of H2O2 electrosynthesis was investigated by density functional theory calculations, and the combination of epoxy and graphitic N (EP + N) was identified as the most favorable configuration with the lowest theoretical overpotential for H2O2 generation. Moreover, NO-GNSs/Ni-F was applied in the electro-Fenton process for p-nitrophenol degradation, resulting in 100% removal within 15 min with the kinetic rate constant of 0.446 min-1 and 97.6% mineralization within 6 h. The efficient removal was mainly attributed to the generation of bulk ·OH. Furthermore, NO-GNSs/Ni-F exhibited excellent stability. This work provides a workable option for the enhancement of H2O2 accumulation and the efficient degradation of pollutants in electro-Fenton system.
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Affiliation(s)
- Fangmin Wu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jun Nan
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Tianzuo Wang
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Applied Catalysis, Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Zhencheng Ge
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Bohan Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Meng Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Xuesong Ye
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
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40
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Guo H, Zhao C, Xu H, Hao H, Yang Z, Li N, Xu W. Enhanced H 2O 2 formation and norfloxacin removal by electro-Fenton process using a surface-reconstructed graphite felt cathode: New insight into synergistic mechanism of defective active sites. Environ Res 2023; 220:115221. [PMID: 36610538 DOI: 10.1016/j.envres.2023.115221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 01/01/2023] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
The efficient catalytic activity and strong durability possibility of carbon-based three-dimensional fiber materials remains an important challenge in Electro-Fenton advanced oxidation technology. Graphite felt (GF) is a promising electrode material for 2-electron oxygen reduction reaction but with higher catalytic inertia. Anodizing modification of GF has been proved to enhance it electro-catalytic property, but the disadvantages of excessive or insufficient oxidation of GF need further improved. Herein, the surface reconstituted graphite felt by anodizing and HNO3 ultrasonic integrated treatment was used as cathode to degrade norfloxacin (NOR) and the substantial role of different modification processes was essentially investigated. Compared with the single modification process, the synergistic interaction between these two methods can generate more defective active sites (DASs) on GF surface and greatly improved 2-electron ORR activity. The H2O2 can be further co-activated by Fe2+ and DASs into •OH(ads and free) and •O2- to efficiently degrade NOR. The treated GF with 20 min anodizing and 1 h HNO3 ultrasound had the highest electrocatalytic activity in a wide electric potential (-0.4 V to -0.8 V) and pH range (3-9) in system and the efficient removal rate of NOR was basically maintained after 5 cycles. Under optimal reaction conditions, 50 mg L-1 NOR achieved 93% degradation and almost 63% of NOR was completely mineralized within 120 min. The possible NOR degradation pathways and ecotoxicity of intermediates were analyzed by LC-MS and T.E.S.T. theoretical calculation. This paper provided the underlying insights into designing a high-efficiency carbon-based cathode materials for commercial antibiotic wastewater treatment.
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Affiliation(s)
- Hongkai Guo
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China
| | - Chengwen Zhao
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China
| | - Hu Xu
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China
| | - Honglin Hao
- Gansu HaoShi Carbon Fiber Co., LTD, Baiyin, 730900, Gansu, China
| | - Ziyuan Yang
- Gansu HaoShi Carbon Fiber Co., LTD, Baiyin, 730900, Gansu, China
| | - Na Li
- Gansu HaoShi Carbon Fiber Co., LTD, Baiyin, 730900, Gansu, China
| | - Weijun Xu
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China.
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Dos Santos NDO, Busquets R, Campos LC. Insights into the removal of microplastics and microfibres by Advanced Oxidation Processes. Sci Total Environ 2023; 861:160665. [PMID: 36473655 DOI: 10.1016/j.scitotenv.2022.160665] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Water treatment plants' effluents are hotspots of microplastics (MPs) and microfibres (MFs) released into the aquatic environment because they were not designed to capture these particles. Special attention should be given to MFs, since they mainly come from laundry and are related to one of the main MP shapes detected in water and wastewater treatment plants. In this sense, Advanced Oxidation Processes (AOPs) could be a feasible solution for tackling MP and MF pollution, however, it is still premature to extract conclusions due to the limited number of studies on the degradation of these particles (specifically MFs) using AOPs. This review addresses the impacts of AOPs on MPs/MFs, focusing on their degradation efficiency, toxicity, and sustainability of the processes, among other aspects. The review points out that polyamide MFs can achieve mass loss >90% by photocatalytic system using TiO2. Also, the low oxidation of MPs (<30 %) by conventional Fenton process affects mainly the surface of the MPs. However, other Fenton-based processes can provide better removal of some types of MPs, mainly using temperatures >100 °C, reaction time ≥ 5 h, and initial pH ≤ 3, achieving MP weight loss up to 96 %. Despite these results, better operating conditions are still required for AOPs since the ones reported so far are not feasible for full-scale application. Additionally, ozonation in treatment plants has increased the fragmentation of MPs (including MFs), leading to a new generation of MPs. More attention is needed on toxicity effects of intermediates and methods of analysis employed for the analysis of MPs/MFs in wastewater effluent should be standardized so that studies can be compared effectively. Future research should focus on the sustainability of the AOP for MP removal in water treatment (power consumption, chemicals consumed and operational costs) for a better understanding of full-scale applicability of AOP adapted to MP treatment.
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Affiliation(s)
- Naiara de Oliveira Dos Santos
- Department of Civil, Environmental & Geomatic Engineering, Faculty of Engineering, University College London, London WC1E 6BT, United Kingdom
| | - Rosa Busquets
- Department of Civil, Environmental & Geomatic Engineering, Faculty of Engineering, University College London, London WC1E 6BT, United Kingdom; School of Life Sciences, Pharmacy and Chemistry, Faculty of Health, Science, Social Care and Education, Kingston University, Penrhyn Road, Kingston Upon Thames KT1 2EE, United Kingdom
| | - Luiza C Campos
- Department of Civil, Environmental & Geomatic Engineering, Faculty of Engineering, University College London, London WC1E 6BT, United Kingdom.
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Zhang Q, Wang X, Xie J, Yin H, Song G, Zhou M. Floating sandwich-type electro-Fenton: A feasible process to remove micro-pollutants through adsorption enrichment and enhanced oxidation efficiency. J Hazard Mater 2023; 443:130280. [PMID: 36327827 DOI: 10.1016/j.jhazmat.2022.130280] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/09/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
To improve the removal efficiency of low-concentration organic pollutants and enhance the oxidation efficiency of electro-Fenton (EF) process, a floating sandwich-type EF system (N/(A)/D-EF) without aeration was constructed for the first time. This EF system electro-synthesized H2O2 through the floating natural air diffusion electrode (NADE) without aeration, and regenerated Fe(II) effectively by the activated carbon fiber (ACF) interlayer, which significantly enhanced the process oxidation capacity since its •OH yield was 8.7 times that of the conventional EF system. In addition, the ACF interlayer could adsorb and enrich micro-pollutants and the generated •OH directly oxidize the pollutants adsorbed on the ACF, which enabled regeneration of ACF and maintained removal stability in 20 consecutive experiments. The removal rate constant (k) of carbamazepine by N/(A)/D-EF process was 7.6 times and 2.1 times higher than that of conventional EF and ACF adsorption process, respectively. This process could efficiently remove mixed low-concentration organic pollutants (0.1 mg L-1) in domestic sewage and lake water with rate constant 1.6-7.1 times that of the conventional EF process but lower energy consumption. Meanwhile, the N/(A)/D-EF process had a wider application range of sewage pH and conductivity, which was a promising process for removing low-concentration pollutants in wastewater.
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Affiliation(s)
- Qizhan Zhang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xuechun Wang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Jinxin Xie
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Haoran Yin
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ge Song
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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Tang Q, Luo S, Gao H, Fan Y, Bao W, Gao Y, Sun Y, Yang C. N-doped graphene aerogel cathode with internal aeration for enhanced degradation of p-nitrophenol by electro-Fenton process. Environ Sci Pollut Res Int 2023; 30:23481-23493. [PMID: 36327069 DOI: 10.1007/s11356-022-23868-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
A columnar N-doped graphene aerogel (NGA) was successfully fabricated by one-step hydrothermal synthesis using L-hydroxyproline as reductant, N-doping, and swelling agent, and it was used as the cathode with internal aeration mode for the electro-Fenton degradation of p-nitrophenol. Owing to the stable solid-liquid-gas three-phase interface, more active defects, and modulated nitrogen dopants, the NGA cathode exhibited enhanced electrocatalytic activity. H2O2 could be continuously electro-generated via a two-electron oxygen reduction, and the yield of H2O2 was 153.3 mg·L-1·h-1 with the low electric energy consumption of 15.3 kWh kg-1. Simultaneously, the NGA cathode had better charge transfer capability with N-doping, which was conducive to the conversion of Fe3+/Fe2+. Under the optimal condition, nearly 100% removal of p-nitrophenol and 84% removal of TOC were obtained within 60 and 120 min, respectively. The NGA cathode also presented good stability and versatile applicability in different water matrices. Therefore, the NGA is a cost-effective cathode material in electro-Fenton system with adequate activity and reuse stabilization.
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Affiliation(s)
- Qian Tang
- Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China.
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China.
| | - Sijia Luo
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
| | - Hang Gao
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
| | - Yixin Fan
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
| | - Wenqi Bao
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
| | - Yonghui Gao
- Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China
| | - Yuwei Sun
- Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
| | - Chunwei Yang
- Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
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44
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Tian C, Yuan P, Huang W, Song F, Zhao W. MoS 2 nanosheets embedded in α-FeOOH as an efficient cathode for enhanced MFC- electro-Fenton performance in wastewater treatment. Environ Res 2023; 216:114818. [PMID: 36400219 DOI: 10.1016/j.envres.2022.114818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/02/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Microbial fuel cell-electro-Fenton system (MEF) has attracted attention due to refractory organic pollutants removal, where H2O2 is in-situ produced without external energy supply. Enhancement of H2O2 production and the activation of H2O2 to ·OH are the keys to improve degradation performance. Development of bifunctional catalytic cathode is a viable strategy. Herein, the α-FeOOH/MoS2 nanocomposites was fabricated by a novel facile hydrothermal method based on molybdenite-exfoliated MoS2 nanosheets suspension, which was used as modified cathode in a MEF system. The obtained α-FeOOH/1 wt%MoS2 cathode exhibited highest power density of 292.38 mW/m2, which was about 3.7 and 1.7 times higher than that of graphite plate and α-FeOOH, respectively. Doping of MoS2 nanosheets significantly enhanced electrocatalytic activity of the cathode and promoted in-situ H2O2 generation. Meanwhile, the exposed reductive Mo4+ on the surface of MoS2 could greatly facilitate the conversion cycle of Fe(III)/Fe(II), leading to the efficient activation of H2O2 into ·OH. The MEF with α-FeOOH/1 wt%MoS2 cathode exhibited excellent degradation and mineralization performance for MB, rhodamine B and tetracycline hydrochloride at optimized reaction condition. Furthermore, the MEF can simultaneously achieve MB oxidation and Cr(VI) reduction, and the corresponding removal ratio can reach up to 91.45% and 100%, respectively. Based on simple preparation method as well as recyclability and excellent catalytic property, the α-FeOOH/MoS2 composite catalyst is considered as a promising MEF cathode for efficient wastewater treatment.
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Affiliation(s)
- Congqi Tian
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China; Baotou Research Institute of Rare Earths, Baotou, 014030, China
| | - Ping Yuan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Weili Huang
- Inner Mongolia Academy of Forestry, Hohhot, 010010, China
| | - Feiyu Song
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Wenyan Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
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Santos MC, Antonin VS, Souza FM, Aveiro LR, Pinheiro VS, Gentil TC, Lima TS, Moura JPC, Silva CR, Lucchetti LEB, Codognoto L, Robles I, Lanza MRV. Decontamination of wastewater containing contaminants of emerging concern by electrooxidation and Fenton-based processes - A review on the relevance of materials and methods. Chemosphere 2022; 307:135763. [PMID: 35952792 DOI: 10.1016/j.chemosphere.2022.135763] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/11/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
In recent years, there has been an increasingly growing interest regarding the use of electrochemical advanced oxidation processes (EAOPs) which are considered highly promising alternative treatment techniques for addressing environmental issues related to pollutants of emerging concern. In EAOPs, electrogenerated oxidizing agents, such as hydroxyl radical (HO•), can react non-selectively with a wide range of organic compounds, degrading and mineralizing their structures to unharmful molecules like CO2, H2O, and inorganic ions. To this date, a broad spectrum of advanced electrocatalysts have been developed and applied for the treatment of compounds of interest in different matrices, specifically aiming at enhancing the degradation performance. New combined methods have also been employed as alternative treatment techniques targeted at circumventing the major obstacles encountered in Fenton-based processes, such as high costs and energy consumption, which still contribute significantly toward inhibiting the large-scale application of these processes. First, some fundamental aspects of EAOPs will be presented. Further, we will provide an overview of electrode materials which have been recently developed and reported in the literature, highlighting different anode and cathode structures employed in EAOPs, their main advantages and disadvantages, as well as their contribution to the performance of the treatment processes. The influence of operating parameters, such as initial concentrations, pH effect, temperature, supporting electrolyte, and radiation source, on the treatment processes were also studied. Finally, hybrid techniques which have been reported in the literature and critically assess the most recent techniques used for evaluating the degradation efficiency of the treatment processes.
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Affiliation(s)
- Mauro C Santos
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil.
| | - Vanessa S Antonin
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Felipe M Souza
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil; Departamento de Química, Instituto Federal de Educação, Ciência e Tecnologia Goiano, BR-153, Km 633, Zona Rural, CEP: 75650-000, Morrinhos, GO, Brazil
| | - Luci R Aveiro
- São Paulo Federal Institute of Education, Science and Technology, Rua Pedro Vicente, 625, Canindé São Paulo, CEP: 01109-010, SP, Brazil
| | - Victor S Pinheiro
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Tuani C Gentil
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Thays S Lima
- Department of Chemistry, Institute of Chemical and Pharmaceutical Environmental Sciences, Federal University of São Paulo (UNIFESP), Rua Prof. Artur Riedel, n 275 - Jd. Eldorado, CEP: 09972-270, Diadema, SP, Brazil
| | - João P C Moura
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Carolina R Silva
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Lanna E B Lucchetti
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Lucia Codognoto
- Department of Chemistry, Institute of Chemical and Pharmaceutical Environmental Sciences, Federal University of São Paulo (UNIFESP), Rua Prof. Artur Riedel, n 275 - Jd. Eldorado, CEP: 09972-270, Diadema, SP, Brazil
| | - Irma Robles
- Center for Research and Technological Development in Electrochemistry, S.C., Parque Tecnológico Querétaro, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Marcos R V Lanza
- São Carlos Institute of Chemistry (IQSC), University of São Paulo (USP), Avenida Trabalhador São-carlense 400, São Carlos, SP, 13566-590, Brazil
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Crispim AC, de Araújo DM, Martínez-Huitle CA, Souza FL, Dos Santos EV. Application of electro-Fenton and photoelectro-Fenton processes for the degradation of contaminants in landfill leachate. Environ Res 2022; 213:113552. [PMID: 35710024 DOI: 10.1016/j.envres.2022.113552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Worldwide, most solid waste ends its life in landfill sites, which have a significant environmental impact in several respects. In particular, rainfall over landfill sites results in the production of an aqueous leachate containing compounds having low biodegradability, high toxicity, and a high organic load. For this reason, this study aims to investigate the applicability of electro-Fenton (EF) and photoelectro-Fenton (PEF) processes as alternative for treating a local landfill effluent with high organic content (chemical oxygen demand (COD) = 2684.7 mg-O2 L -1) in a continuous-flow reactor (using, for first time, this kind of system with higher electrodes area of 35 cm2) using boron-doped diamond anode (Nb/BDD) and a carbon felt cathode (FC) electrodes. The effects of current density j (30, 60 and 90 mA cm-2) and UV radiation wavelength (UVA and UVC) were studied to evaluate the treatment efficiency as well as the energy consumption. Results clearly showed that, the best efficiencies removing organic matter, in terms of COD, were about 66%, 68% and 89% with an energy consumption of only 19.41, 17.61 and 17.59 kWh kg COD-1 for EF, PEF-UVA and PEF-UVC respectively, at 90 mA cm-2 after 4 h of operation. The treatment of this kind of effluent produced organic and inorganic by-products, the acetic and formic acids as well as NO2-, NO3-, and NH4+, being assessed their concentrations.
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Affiliation(s)
- Alana C Crispim
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal Do Rio Grande Do Norte, Lagoa Nova, CEP 59.072-900, RN, Brazil
| | - Danyelle M de Araújo
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal Do Rio Grande Do Norte, Lagoa Nova, CEP 59.072-900, RN, Brazil
| | - Carlos A Martínez-Huitle
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal Do Rio Grande Do Norte, Lagoa Nova, CEP 59.072-900, RN, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, UNESP, P.O. Box 355, 14800 900, Araraquara, SP, Brazil
| | - Fernanda L Souza
- National Nanotechnology Laboratory for Agriculture, Brazilian Agriculture Research Corporation (Embrapa), XV de Novembro Street, 1452, São Carlos, Brazil.
| | - Elisama V Dos Santos
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal Do Rio Grande Do Norte, Lagoa Nova, CEP 59.072-900, RN, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, UNESP, P.O. Box 355, 14800 900, Araraquara, SP, Brazil.
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Hien SA, Trellu C, Oturan N, Assémian AS, Briton BGH, Drogui P, Adouby K, Oturan MA. Comparison of homogeneous and heterogeneous electrochemical advanced oxidation processes for treatment of textile industry wastewater. J Hazard Mater 2022; 437:129326. [PMID: 35714542 DOI: 10.1016/j.jhazmat.2022.129326] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/04/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
This study aimed at understanding the influence of the generation of oxidants in a heterogeneous way at boron-doped diamond (BDD) anode (anodic oxidation (AO)) or homogeneously in the bulk (electro-Fenton (EF)) during treatment of a textile industry wastewater. Both processes achieved high TOC removal. A yield of 95 % was obtained by combining EF with BDD anode during 6 h of treatment. The EF process was found to be faster and more efficient for discoloration of the effluent, whereas AO was more effective to limit the formation of degradation by-products in the bulk. An advantage of AO was to treat this alkaline effluent without any pH adjustment. Operating these processes under current limitation allowed optimizing energy consumption in both cases. However, using BDD anode led to the formation of very high concentration of ClO3-/ClO4- from Cl- oxidation (even at low current density), which appears as a key challenge for treatment of such effluent by AO. By comparison, EF with Pt anode strongly reduced the formation of ClO3-/ClO4-. Operating EF at low current density even maintained these concentrations below 0.5 % of the initial Cl- concentration. A trade-off should be considered between TOC removal and formation of toxic chlorinated by-products.
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Affiliation(s)
- Sié Alain Hien
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France; Laboratoire des Procédés Industriels, de Synthèse de l'Environnement et des Energies Nouvelles (LAPISEN), Institut National Polytechnique Houphouët-Boigny, BP 1313 Yamoussoukro, Côte d'Ivoire
| | - Clément Trellu
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France.
| | - Nihal Oturan
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France
| | - Alain Stéphane Assémian
- Laboratoire de Thermodynamique et Chimie Physique de l'Environnement, Université de Nangui-Abrogoua, 02 BP 801, Abidjan 01, Côte d'Ivoire
| | - Bi Gouessé Henri Briton
- Laboratoire des Procédés Industriels, de Synthèse de l'Environnement et des Energies Nouvelles (LAPISEN), Institut National Polytechnique Houphouët-Boigny, BP 1313 Yamoussoukro, Côte d'Ivoire
| | - Patrick Drogui
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K9A9, Canada
| | - Kopoin Adouby
- Laboratoire des Procédés Industriels, de Synthèse de l'Environnement et des Energies Nouvelles (LAPISEN), Institut National Polytechnique Houphouët-Boigny, BP 1313 Yamoussoukro, Côte d'Ivoire
| | - Mehmet A Oturan
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454 Marne-la-Vallée, Cedex 2, France.
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Varindani A, Anantha Singh TS, Menon P, Nidheesh PV. Chelate-modified Electro-Fenton process for mixed industrial wastewater treatment. Environ Technol 2022; 43:3497-3506. [PMID: 33944690 DOI: 10.1080/09593330.2021.1923819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
The Chelate-modified EF process for the removal of COD at near neutral pHTreatment of the mixed industrial wastewater with very low BOD/COD ratioInfluence of Fenton catalyst and chelating agent dosage on COD removal.Comparable COD removal of 67% with Chelate-modified EF at near neutral pH and 66% with EF at acidic pH.Mineralization current efficiency and instantaneous current efficiency for COD removal.
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Affiliation(s)
- Anand Varindani
- Department of Civil Engineering, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, India
| | - T S Anantha Singh
- Department of Civil Engineering, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, India
- Department of Civil Engineering, National Institute of Technology Calicut, Kozhikode, India
| | - Poornima Menon
- Department of Civil Engineering, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, India
| | - P V Nidheesh
- CSIR, National Environmental Engineering Research Institute, Nagpur, India
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Pacheco-Álvarez M, Picos Benítez R, Rodríguez-Narváez OM, Brillas E, Peralta-Hernández JM. A critical review on paracetamol removal from different aqueous matrices by Fenton and Fenton-based processes, and their combined methods. Chemosphere 2022; 303:134883. [PMID: 35577132 DOI: 10.1016/j.chemosphere.2022.134883] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Paracetamol (PCT), also known as acetaminophen, is a drug used to treat fever and mild to moderate pain. After consumption by animals and humans, it is excreted through the urine to the sewer systems, wastewater treatment plants, and other aquatic/natural environments. It has been detected in trace amounts in effluents of wastewater plant treatments, sewage sludge, hospital wastewaters, surface waters, and drinking water. PCT can cause genetic code damage, oxidative degradation of lipids, and denaturation of protein in cells, and its toxicity has been well-proven in bacteria, algae, macrophytes, protozoan, and fishes. To avoid its harmful health problems over living beings, powerful Fenton and Fenton-based treatments as pre-eminent advanced oxidation processes (AOPs) have been developed because of the inefficient treatment by conventional treatments. This paper presents a comprehensive and critical review over the application of such Fenton technologies to remove PCT from natural waters, synthetic wastewaters, and real wastewaters. The characteristics and main results obtained using Fenton, photo-Fenton, electro-Fenton, and photoelectro-Fenton are described, making special emphasis in the oxidative action of the generated reactive oxygen species. Hybrid processes based on the coupling with ultrasounds, gamma radiation, photocatalysis, photoelectrocatalysis, zero-valent iron-activated persulfate, adsorption, and microbial fuel cells, are analyzed. Sequential treatments involving the initiation with plasma gliding arc discharge and post-biological process are detailed. Comparative results with other available AOPs are also described and discussed. Finally, 13 aromatic by-products and 9 short-linear aliphatic carboxylic acid detected during the PCT removal by Fenton and Fenton-based processes are reported, with the proposal of three parallel pathways for its initial degradation.
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Affiliation(s)
- Martin Pacheco-Álvarez
- Departamento de Química, DCNE, Universidad de Guanajuato, Cerro de la Venada s/n, Pueblito de Rocha, Guanajuato, C.P. 36040, Mexico
| | - Ricardo Picos Benítez
- Centro de Estudios Científicos y Tecnológicos No. 18, Instituto Politécnico Nacional, 98160, Zacatecas, Zac., Mexico
| | - Oscar M Rodríguez-Narváez
- Dirección de Investigación y Soluciones Tecnológicas, Centro de Innovación Aplicado en Tecnologías Competitivas, Omega 201, Leon, Guanajuato, 37545, Mexico
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
| | - Juan M Peralta-Hernández
- Departamento de Química, DCNE, Universidad de Guanajuato, Cerro de la Venada s/n, Pueblito de Rocha, Guanajuato, C.P. 36040, Mexico.
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Zhao Y, Hojabri S, Sarrouf S, Alshawabkeh AN. Electrogeneration of H 2O 2 by graphite felt double coated with polytetrafluoroethylene and polydimethylsiloxane. J Environ Chem Eng 2022; 10:108024. [PMID: 36969726 PMCID: PMC10035042 DOI: 10.1016/j.jece.2022.108024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Efficient and steady electrogeneration of H2O2 is a significant step in the Electro-Fenton water treatment process. This study fabricates a polytetrafluoroethylene (PTFE) coated graphite felt cathode with a polydimethylsiloxane (PDMS) damp-proof coating to generate H2O2 in a flow-through system without an external oxygen supply. We evaluated the effect of PDMS content, current, flow rate, and pH on H2O2 production. PDMS coating inhibits electrowetting to extend the longevity of the modified graphite felt for electrogeneration of H2O2. However, increasing PDMS content can decrease H2O2 production due to reduction of active sites on the graphite felt. Graphite felt electrodes (surface area = 14.5 cm2) coated with 500 mg of PDMS can generate 10 mg/L of H2O2 under a flow rate of 3 mL/min with only 2% production reduction after 24-hour use. This modified graphite felt has better performance in a neutral or alkaline environment than in an acidic condition. Up to 38.5 mg/L of H2O2 will be generated at optimum current (120 mA) at the flow rate of 3 mL/min. Increasing the flow rate decreases the concentration of H2O2 in the electrolyte but enhances total production after 145 mins.
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Affiliation(s)
- Yuwei Zhao
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States
| | - Shayan Hojabri
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States
| | - Stephanie Sarrouf
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States
| | - Akram N Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States
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