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Mahmoud M, Mossad M, Mahanna H. Degradation of levofloxacin using electro coagulation residuals-alginate beads as a novel heterogeneous electro-fenton composite. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 359:120972. [PMID: 38678901 DOI: 10.1016/j.jenvman.2024.120972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/29/2024] [Accepted: 04/20/2024] [Indexed: 05/01/2024]
Abstract
The presence of levofloxacin (LEV) in aqueous solutions can pose health risks to humans, have adverse effects on aquatic organisms and ecosystems, and contribute to the development of antibiotic-resistant bacteria. This study aims to investigate the feasibility of using electrocoagulation residuals (ECRs) as a heterogeneous catalyst in the electro-Fenton process for degrading LEV. By combining electrocoagulation residuals with sodium alginate, ECRs-alginate beads were synthesized as a heterogeneous electro-Fenton composite. The response surface method was employed to investigate the optimization and influence of various operating parameters such as the initial concentration of LEV (10-50 mg/L), voltage (15-35 V), pH (3-9), and catalyst dose (1-9 g/L). The successful incorporation of iron and other metals into the ECRs-alginate beads was confirmed by characterization tests such as EDX and FTIR. By conducting a batch reaction under optimal conditions (initial LEV concentration = 20 mg/L, pH = 4.5, voltage = 30V, and catalyst dose = 7 g/L), a remarkable degradation of 99% for LEV was achieved. Additionally, under these optimal conditions, a high removal efficiency of 92.3% for total organic carbon (TOC) could be attained within 120 min and these findings are remarkable compared to previous studies. The results further indicated that the degradation of levofloxacin (LEV) could be accurately quantified by utilizing the first-order kinetic reaction with a 0.03 min-1 rate constant. The synthesized beads offered notable advantages in terms of being eco-friendly, simple to use, highly efficient, and easily recoverable from the liquid medium after use.
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Affiliation(s)
- Mohamed Mahmoud
- Public Works Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, 35516, Egypt.
| | - Mohamed Mossad
- Public Works Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, 35516, Egypt.
| | - Hani Mahanna
- Public Works Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, 35516, Egypt.
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2
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He Y, Sun R, Zhang D, Wang Y, Zhou S, Deng X, Wang B, Hu G. Separable alginate gel spheres encapsulated with La-Fe modified biochar for efficient adsorption of Sb(III) with high capacity. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132322. [PMID: 37657320 DOI: 10.1016/j.jhazmat.2023.132322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/31/2023] [Accepted: 08/15/2023] [Indexed: 09/03/2023]
Abstract
Sb and its compounds have been widely used in various industrial applications. Therefore, the preparation of Sb adsorbents with easy recovery and excellent adsorption levels is an urgent problem that must be resolved. By calcining and treating La/Fe metal-organic frameworks (MOF) biochar as a precursor, a loaded La-Fe-modified water hyacinth biochar was synthesised and used as a filler to synthesise iron alginate composite gel spheres, MBC/algFe. Through a series of static adsorption experiments, the effects of different filler addition ratios, solution pH, reaction time, coexisting ions, and other factors on the adsorption of Sb(III) were investigated. According to the Langmuir model, the maximum adsorption capacity of MBC/algFe at 25 ℃ was 277.8 mg·g-1. The adsorption mechanism mainly involved hydrogen bonding and metal-organic complexation interactions.
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Affiliation(s)
- Yingnan He
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China; Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Ruiyi Sun
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Dafeng Zhang
- School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yin Wang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Shuxing Zhou
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, China.
| | - Xiujun Deng
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China.
| | - Baoling Wang
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Guangzhi Hu
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China.
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3
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Yang R, Peng Q, Ahmed A, Gao F, Yu B, Shen Y, Cong H. Yolk-shell Co 3 O 4 @Fe 3 O 4 /C Nanocomposites as a Heterogeneous Fenton-like Catalyst for Organic Dye Removal. Chemistry 2023; 29:e202203097. [PMID: 36453090 DOI: 10.1002/chem.202203097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/03/2022]
Abstract
The yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites with Co3 O4 as the core, Fe3 O4 /C as the shell, and a cavity structure were synthesized by the hard template method. The physical and chemical properties of the composites were characterized by SEM, TEM, XRD, TGA, XPS, BET, and VSM. The specific surface area of yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites is 175.9 m2 g-1 , showing superparamagnetic properties. The yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites were used as heterogeneous Fenton catalysts to activate peroxymonosulfate (PMS) to degrade MB, which showed high catalytic degradation performance. The degradation rate of MB reached 100 % within 30 min under the circumstances of the yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites dosage of 0.1 g L-1 , the PMS dosage of 1.0 g L-1 , the initial MB concentration of 100 mg L-1 , an initial pH of 5.5, and a temperature of 30±2 °C. The enhanced catalytic performance of the yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites can be attributed to the synergistic effect of the two catalytically active materials and the middle cavity. The effects of different operating parameters and co-existing anion species on MB degradation were also investigated. Electron paramagnetic resonance (EPR) analysis and quenching experiments confirmed that the formation of SO4 ⋅- in the yolk-shell Co3 O4 @Fe3 O4 /C/PMS system contributes to MB degradation. In addition, yolk-shell Co3 O4 @Fe3 O4 /C nanocomposites can be easily separated from the pollutant solution under the action of an external magnetic field, and the degradation rate of MB can still reach 98 % after five cycles, indicating that it has good stability and reusability and has broad application prospects in the field of water purification.
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Affiliation(s)
- Ruixia Yang
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Qiaohong Peng
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Adeel Ahmed
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Fengyuan Gao
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Bing Yu
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China.,State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071, P. R. China
| | - Youqing Shen
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering College of Materials Science and Engineering College of Environmental Science and Engineering Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, P. R. China.,State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071, P. R. China.,School of Materials Science and Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
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4
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Xue C, Cao Z, Tong X, Yang P, Li S, Chen X, Liu D, Huang W. Investigation of CuCoFe-LDH as an efficient and stable catalyst for the degradation of acetaminophen in heterogeneous electro-Fenton system: Key operating parameters, mechanisms and pathways. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 327:116787. [PMID: 36442449 DOI: 10.1016/j.jenvman.2022.116787] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/02/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Pharmaceuticals, as anthropogenic pollutants in a wide range of water sources, generally require specific treatment methods for degradation. A trimetallic layered double hydroxide (CuCoFe-LDH) was successfully fabricated by coprecipitation and applied as a novel heterogeneous electro-Fenton (EF) catalyst for the degradation of acetaminophen (ACT) from aqueous environments. The EF experiments showed that the CuCoFe-LDH/EF process achieved 100% of ACT degradation efficiency within 60 min at pH = 5, catalyst dosage of 0.50 g/L, current density of 10 mA/cm2 and initial ACT concentration of 20 mg/L. An impressive (>80%) mineralization of ACT was obtained over a wide pH range (pH 3-9) after 180 min. Meanwhile, the role of ·OH and O2.- were certified by radical quenching experiments and electron paramagnetic resonance (EPR) analysis. Through mechanism exploration, the coexistence of Cu and Co on Fe-based LDHs can accelerate the interfacial electron transfer and promote the formation of the reactive oxygen species (ROS), thus facilitating the EF process. Furthermore, the degradation by-products and possible degradation pathways of ACT in the CuCoFe-LDH/EF process were proposed. The reusability test and the treatment of various typical organic pollutants experiments indicated that the CuCoFe-LDH/EF process has excellent stability and broad application prospects. This work provides a valuable reference for the treatment of pharmaceuticals by the heterogeneous EF process in a wide range of pH.
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Affiliation(s)
- Cheng Xue
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Zhenhua Cao
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xiaoqin Tong
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Peizhen Yang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Songrong Li
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xi Chen
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Dongfang Liu
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
| | - Wenli Huang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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5
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Baudequin T, Wee H, Cui Z, Ye H. Towards Ready-to-Use Iron-Crosslinked Alginate Beads as Mesenchymal Stem Cell Carriers. Bioengineering (Basel) 2023; 10:bioengineering10020163. [PMID: 36829657 PMCID: PMC9951883 DOI: 10.3390/bioengineering10020163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/12/2023] [Accepted: 01/19/2023] [Indexed: 01/28/2023] Open
Abstract
Micro-carriers, thanks to high surface/volume ratio, are widely studied as mesenchymal stem cell (MSCs) in vitro substrate for proliferation at clinical rate. In particular, Ca-alginate-based biomaterials (sodium alginate crosslinked with CaCl2) are commonly investigated. However, Ca-alginate shows low bioactivity and requires functionalization, increasing labor work and costs. In contrast, films of sodium alginate crosslinked with iron chloride (Fe-alginate) have shown good bioactivity with fibroblasts, but MSCs studies are lacking. We propose a first proof-of-concept study of Fe-alginate beads supporting MSCs proliferation without functionalization. Macro- and micro-carriers were prepared (extrusion and electrospray) and we report for the first time Fe-alginate electrospraying optimization. FTIR spectra, stability with various mannuronic acids/guluronic acids (M/G) ratios and size distribution were analyzed before performing cell culture. After confirming literature results on films with human MSCs, we showed that Macro-Fe-alginate beads offered a better environment for MSCs adhesion than Ca-alginate. We concluded that Fe-alginate beads showed great potential as ready-to-use carriers.
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Affiliation(s)
- Timothée Baudequin
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK
- Biomechanics and Bioengineering, CNRS, Centre de Recherche Royallieu, Université de Technologie de Compiègne, CS 60 319, 60203 Compiègne, France
| | - Hazel Wee
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK
| | - Zhanfeng Cui
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK
| | - Hua Ye
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK
- Correspondence:
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6
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Molla Nadali Pishnamaz H, Farimaniraad H, Baghdadi M, Aminzadeh Goharrizi B, Mahpishanian S. Application of nickel foam cathode modified by single-wall carbon nanotube in electro-Fenton process coupled with anodic oxidation: Enhancing organic pollutants removal. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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7
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Pan S, Liu C, Li Y, Wang C, Cui X, Liu N, Zhang C, Hakizimana I, Zhao X, Liu W, Chen Y. Ultrafast self-assembly Fe2O3 nanoparticles confined in carbon layers toward robust heterogeneous electro-Fenton reaction. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Rafaqat S, Ali N, Torres C, Rittmann B. Recent progress in treatment of dyes wastewater using microbial-electro-Fenton technology. RSC Adv 2022; 12:17104-17137. [PMID: 35755587 PMCID: PMC9178700 DOI: 10.1039/d2ra01831d] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/02/2022] [Indexed: 01/24/2023] Open
Abstract
Globally, textile dyeing and manufacturing are one of the largest industrial units releasing huge amount of wastewater (WW) with refractory compounds such as dyes and pigments. Currently, wastewater treatment has been viewed as an industrial opportunity for rejuvenating fresh water resources and it is highly required in water stressed countries. This comprehensive review highlights an overall concept and in-depth knowledge on integrated, cost-effective cross-disciplinary solutions for domestic and industrial (textile dyes) WW and for harnessing renewable energy. This basic concept entails parallel or sequential modes of treating two chemically different WW i.e., domestic and industrial in the same system. In this case, contemporary advancement in MFC/MEC (METs) based systems towards Microbial-Electro-Fenton Technology (MEFT) revealed a substantial emerging scope and opportunity. Principally the said technology is based upon previously established anaerobic digestion and electro-chemical (photo/UV/Fenton) processes in the disciplines of microbial biotechnology and electro-chemistry. It holds an added advantage to all previously establish technologies in terms of treatment and energy efficiency, minimal toxicity and sludge waste, and environmental sustainable. This review typically described different dyes and their ultimate fate in environment and recently developed hierarchy of MEFS. It revealed detail mechanisms and degradation rate of dyes typically in cathodic Fenton system under batch and continuous modes of different MEF reactors. Moreover, it described cost-effectiveness of the said technology in terms of energy budget (production and consumption), and the limitations related to reactor fabrication cost and design for future upgradation to large scale application.
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Affiliation(s)
- Shumaila Rafaqat
- Department of Microbiology, Quaid-i-Azam University Islamabad Pakistan
| | - Naeem Ali
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad Pakistan
| | - Cesar Torres
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University USA
| | - Bruce Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University USA
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9
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Bury NA, Mumford KA, Stevens GW. The electro-Fenton regeneration of Granular Activated Carbons: Degradation of organic contaminants and the relationship to the carbon surface. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125792. [PMID: 33878650 DOI: 10.1016/j.jhazmat.2021.125792] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/20/2021] [Accepted: 03/27/2021] [Indexed: 06/12/2023]
Abstract
Electrochemical regeneration of Granular Activated Carbon is an emerging treatment option to restore adsorption capacity in systems designed to remove organic contaminants from aqueous solutions. The electro-Fenton process is one such electrochemical process and it is reviewed along with other members of its family including Photoelectro-Fenton and Heterogeneous electro-Fenton and electro-Fenton like reactions, for its ability to regenerate Granular Activated Carbons contaminated with organics. The behaviour of critical operating parameter such as pH, current, catalyst concentration and initial contaminant concentration are reviewed to find optimal operating conditions. The relationship between electro-Fenton regeneration and the chemical and physical surface of the carbon is also explored. Understanding regeneration mechanisms and the optimal operating conditions enables these technologies to be used commercially and to be scaled-up and treat contaminated waters more efficiently.
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Affiliation(s)
- Naomi A Bury
- Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Kathryn A Mumford
- Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Geoffrey W Stevens
- Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
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10
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Poza-Nogueiras V, Moratalla Á, Pazos M, Sanromán Á, Sáez C, Rodrigo MA. Towards a more realistic heterogeneous electro-Fenton. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115475] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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11
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Senthilnathan J, Younis SA, Kwon EE, Surenjan A, Kim KH, Yoshimura M. An efficient system for electro-Fenton oxidation of pesticide by a reduced graphene oxide-aminopyrazine@3DNi foam gas diffusion electrode. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123323. [PMID: 32947720 DOI: 10.1016/j.jhazmat.2020.123323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/10/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
A stable rGO-AmPyraz@3DNiF gas diffusion electrode was prepared via modification of 3D nickel foam (3D-NiF) with aminopyrazine functionalized reduced graphene oxide (rGO-AmPyraz) for the electro Fenton (EF) process. The generation capacity of H2O2 and OH radicals by this electrode was assessed relative to 3DNiF and rGO-AmPyraz@indium tin oxide (ITO) electrodes and with/without a coated Fe3O4 plate. The rGO-AmPyraz@3DNiF electrode showed the maximum production of these radicals at 2.2 mmol h-1 and 410 μmol h-1, respectively (pH 3) with the least leaching of Ni2+ such as < 0.5 mg L-1 even after 5 cycles (e.g., relative to 3DNiF (24 mg L-1). Such control on Ni ion leaching was effective all across the tested pH from 3 to 8.5. Its H2O2 generation capacity was far higher than that of the nanocarbon supported on commercially available ITO conductive glass. The mineralization of dichlorvos (at initial concentration: 50 mg L-1) was confirmed with its complete degradation as the concentrations of the end products (e.g., free Cl-1 (5.36 mg L-1) and phosphate (12.89 mg L-1)) were in good agreement with their stoichiometric concentration in dichlorvos. As such, the proposed system can be recommended as an effective electrode to replace nanocarbon-based product commonly employed for EF processes.
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Affiliation(s)
- Jaganathan Senthilnathan
- Environmental and Water Resources Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Sherif A Younis
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea; Analysis and Evaluation Department, Egyptian Petroleum Research Institute, Nasr City 11727, Cairo, Egypt
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05005, Republic of Korea
| | - Anupama Surenjan
- Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Masahiro Yoshimura
- Department of Material Science and Engineering, National Cheng Kung University, Taiwan
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12
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da Silva Bezerra D, França RJ, da Costa Marques MR. A Novel Catalytic Process for Degradation of Bisphenol A in Aqueous Solutions Using Fe Supported on Alginate/Carboxymethylcellulose. Catal Letters 2020. [DOI: 10.1007/s10562-020-03403-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Jiao Y, Ma L, Tian Y, Zhou M. A flow-through electro-Fenton process using modified activated carbon fiber cathode for orange II removal. CHEMOSPHERE 2020; 252:126483. [PMID: 32197180 DOI: 10.1016/j.chemosphere.2020.126483] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 03/01/2020] [Accepted: 03/12/2020] [Indexed: 05/03/2023]
Abstract
This study investigated the removal of Orange II by an electro-Fenton process using a novel recirculation flow-through reactor. The hydrogen peroxide was generated in-situ on the activated carbon fiber (ACF) modified with carbon black and polytetrafluoroethylene (PTFE). The modified ACF cathode was characterized by scanning electron microscopy (SEM) and nitrogen adsorption-desorption study. In light of the production of H2O2 and removal of Orange II, the optimum weight percentage of PTFE in the mixture of carbon black and PTFE was 75%. The effects of some important operating parameters such as current and flow rate were investigated. The best Orange II removal reached 96.7% with mineralization efficiency of 55.4% at 120 min under the current of 100 mA, initial pH 3, Fe2+ 0.3 mM and the flow rate of 7 mL min-1. The cathode exhibited good regeneration ability and stability. OH was proved to be the main oxidizing species in this flow-through electro-Fenton system. This work demonstrated that such electro-Fenton process using modified ACF cathode was promising for the degradation of organic pollutants.
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Affiliation(s)
- Yongli Jiao
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Liang Ma
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Yusi Tian
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, 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, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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14
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de Oliveira Lopes E, Dalponte Dallabona I, Weinschutz R, Matos Jorge RM. Fe/polymer-based photocatalyst synthesized by sono-sorption method applied to wastewater treatment. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Zhou X, Hou Z, Song J, Lv L. Spectrum evolution of dissolved aromatic organic matters (DAOMs) during electro-peroxi-coagulation pretreatment of coking wastewater. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116125] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Li X, Li C, Gao G, Lv B, Xu L, Lu Y, Zhang G. In-situ self-assembly of robust Fe (III)-carboxyl functionalized polyacrylonitrile polymeric bead catalyst for efficient photo-Fenton oxidation of p-nitrophenol. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 702:134910. [PMID: 31710850 DOI: 10.1016/j.scitotenv.2019.134910] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
From the view of channel confinement and functional site capture, we develop an in-situ self-assembly strategy to fabricate the carboxyl functionalized Fe-HPAN bead catalyst with highly stable and uniformly dispersed metallic sites for efficient photo-Fenton oxidation of p-nitrophenol (p-NP). BET and FTIR analysis reveal that numerous carboxyl groups and mesopores exist in Fe-HPAN beads, which acts to capture and immobilize iron ions. Catalytic results show that the degradation rate and TOC removal for p-NP were up to 99.78 and 91.68% under the optimal condition. Even at near neutral pH, the degradation rate almost keep the same and the TOC removal can still reach 73.05%. Due to the autocatalytic cycle of FeIII/FeII, the apparent rate constant of Fe-HPAN (0.2247 min-1) was 5.4 times as high as unmodified Fe-PAN (0.0415 min-1) in the presence of H2O2 and visible light irradiation, which was 2-3 orders of magnitude larger than that of other reaction systems. More importantly, Fe-HPAN bead catalyst exhibited little loss of activity even after 20 cycles of re-utilization. The possible degradation pathway of p-NP was also proposed based on GC/MS analysis. The present work may provide a new perspective for the use of synthetic polymer to prepare low-cost, efficient and robust photo-Fenton oxidation catalysts.
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Affiliation(s)
- Xiong Li
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, 310014 Hangzhou, China
| | - Chang Li
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, 310014 Hangzhou, China
| | - Guanyu Gao
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, 310014 Hangzhou, China
| | - Bosheng Lv
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, 310014 Hangzhou, China
| | - Lusheng Xu
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, 310014 Hangzhou, China
| | - Yin Lu
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Shuren Street 8#, Hangzhou 310015, China
| | - Guoliang Zhang
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, 310014 Hangzhou, China.
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Zhu Y, Qiu S, Deng F, Ma F, Li G, Zheng Y. Three-dimensional nickel foam electrode for efficient electro-Fenton in a novel reactor. ENVIRONMENTAL TECHNOLOGY 2020; 41:730-740. [PMID: 30160203 DOI: 10.1080/09593330.2018.1509890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/02/2018] [Indexed: 06/08/2023]
Abstract
One of the bottlenecks often encountered in electro-Fenton technology is its low ability to produce hydrogen peroxide (H2O2). Thus, the hunt of suitable electrodes and reactor are a must to be tackled in order to improve the efficiency of the system. In this study, three-dimensional nickel foam was selected as cathode for in situ generating H2O2 efficiently and graphite was the control group in an enhanced oxygen mass transfer reactor. The micro-structure and electrochemical performance of electrodes were tested by scanning electron microscopy (SEM), X-ray diffraction (XRD), cyclic voltammetry (CV), electro-chemical impedance spectroscopy (EIS) and Tafel polarization techniques, respectively. The concentration of H2O2 produced by nickel foam cathode was 780.63 μmol/L and the removal efficiency of rhodamine B (RhB) was reached to 92.5% in 60 min. SEM and Tafel results showed that both nickel foam and graphite electrodes were porous structure cathodes. Moreover, CV and EIS experimental results indicated nickel foam electrode was controlled by charge transfer process while had a better transfer than graphite electrode. Electron spin resonance (ESR) spectra results demonstrated that the main oxidant species involved was ·OH, accounting for RhB degradation in electro-Fenton progress. Therefore, in terms of pollutant degradation in the electro-Fenton process, nickel foam electrode together with novel reactor was a promising technique.
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Affiliation(s)
- Yingshi Zhu
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Shan Qiu
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Fengxia Deng
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Fang Ma
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
- State Key Laboratory of Urban Water Resource and Environment, Harbin, People's Republic of China
| | - Guojun Li
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Yanshi Zheng
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
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Díez A, Pazos M, Sanromán M. Bifunctional floating catalyst for enhancing the synergistic effect of LED-photolysis and electro-Fenton process. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Fialho L, Araújo D, Alves VD, Roma-Rodrigues C, Baptista PV, Fernandes AR, Freitas F, Reis MAM. Cation-mediated gelation of the fucose-rich polysaccharide FucoPol: preparation and characterization of hydrogel beads and their cytotoxicity assessment. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1695205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Letícia Fialho
- UCIBIO-REQUIMTE, Chemistry Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Diana Araújo
- UCIBIO-REQUIMTE, Chemistry Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Vitor D. Alves
- LEAF, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Caparica, Portugal
| | - Catarina Roma-Rodrigues
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Pedro V. Baptista
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Alexandra R. Fernandes
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Filomena Freitas
- UCIBIO-REQUIMTE, Chemistry Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Maria A. M. Reis
- UCIBIO-REQUIMTE, Chemistry Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
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20
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Zhuang Y, Shi B. Polymer hydrogels with enhanced stability and heterogeneous Fenton activity in organic pollutant removal. J Environ Sci (China) 2019; 85:147-155. [PMID: 31471021 DOI: 10.1016/j.jes.2019.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/17/2019] [Accepted: 05/20/2019] [Indexed: 06/10/2023]
Abstract
Polymer hydrogel-based materials have been shown to act as novel Fenton catalysts for water treatment, but the rational design of hydrogel-based catalysts with good stability has been a great challenge. To increase the stability and activity of polymer-based Fenton catalysts, uniform urchin-like α-Fe2O3 was grown in situ in a PVA carrier matrix here. PVA molecules promoted the growth of urchin-like α-Fe2O3, and then the PVA hydrogel acted as a barrier and carrier to reduce agglomeration. Through coordination by hydroxyl groups, PVA had good combination with Fe ions and α-Fe2O3. The formation of Fe-O-C bonds between iron oxides and polymers was reported for the first time, enhancing the material stability during catalysis. Under higher PVA concentrations, the resulting composite hydrogel could generate more ˙OH due to the increase in the number of active sites because of the hairy urchin-like structure. In tetracycline degradation through a heterogeneous Fenton reaction, the resulting material had good catalytic activity from pH 2 to pH 10 with low iron leaching, good reusability and remained at a level of nearly 90% after five consecutive cycles. Density functional theory calculations were used to further prove the mechanism of structural change of the iron oxides. The HOMO and LUMO energies of the iron oxides changed from 5.428 and 4.899 eV to 5.926 and 5.310 eV, indicating that the presence of PVA could influence the charge of the iron atom. The results provide new insights into the preparation of polymer hydrogel-based heterogeneous Fenton catalysts with enhanced stability for water treatment.
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Affiliation(s)
- Yuan Zhuang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Baoyou Shi
- Key Laboratory of Drinking Water Science and Technology, 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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21
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Labiadh L, Ammar S, Kamali AR. Oxidation/mineralization of AO7 by electro-Fenton process using chalcopyrite as the heterogeneous source of iron and copper catalysts with enhanced degradation activity and reusability. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113532] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Three-dimensional electro-Fenton system with iron foam as particle electrode for folic acid wastewater pretreatment. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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23
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Abstract
This study was focused on the generation of sulfate radicals and their applicability as powerful oxidants for degrading complex organic compounds with the final objective of operating in flow systems. To this end, the removal of two compounds from the pharmaceutical industry was assessed, lissamine green and prednisolone. Initially, sulfate radicals were generated by the activation of persulfate with iron as homogenous catalyst, and the key parameters involved in the process, as catalyst concentration and oxidant dosage, were evaluated. Furthermore, with the aim of preventing the secondary contamination due to metal leaching and to be operate in a continuous mode, a heterogeneous catalyst was developed. For it, the iron was fixed on a cationic resin as Amberlite IR120 Na+ form. It was demonstrated that the removal of both pollutants increases with greater catalyst dosages, achieving a decay of 85% within 25 min with 30 g·L−1 of catalyst. Moreover, the reuse capability of the catalyst was tested, illustrating that it is rough enough for its reuse. Conversely, in order to develop a continuous treatment in flow system, a fixed bed reactor was constructed and its feasibility was proven. Different experiments with residence times from 10 min to 60 min were performed, obtaining a removal level of ≈95% and 90% for prednisolone and lissamine green, respectively, at residence time of 60 min. In conclusion, the potential of sulfate radicals-based technology for degrading organic contaminants has been demonstrated.
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Javaid R, Qazi UY. Catalytic Oxidation Process for the Degradation of Synthetic Dyes: An Overview. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E2066. [PMID: 31212717 PMCID: PMC6603921 DOI: 10.3390/ijerph16112066] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/29/2019] [Accepted: 06/07/2019] [Indexed: 01/08/2023]
Abstract
Dyes are used in various industries as coloring agents. The discharge of dyes, specifically synthetic dyes, in wastewater represents a serious environmental problem and causes public health concerns. The implementation of regulations for wastewater discharge has forced research towards either the development of new processes or the improvement of available techniques to attain efficient degradation of dyes. Catalytic oxidation is one of the advanced oxidation processes (AOPs), based on the active radicals produced during the reaction in the presence of a catalyst. This paper reviews the problems of dyes and hydroxyl radical-based oxidation processes, including Fenton's process, non-iron metal catalysts, and the application of thin metal catalyst-coated tubular reactors in detail. In addition, the sulfate radical-based catalytic oxidation technique has also been described. This study also includes the effects of various operating parameters such as pH, temperature, the concentration of the oxidant, the initial concentration of dyes, and reaction time on the catalytic decomposition of dyes. Moreover, this paper analyzes the recent studies on catalytic oxidation processes. From the present study, it can be concluded that catalytic oxidation processes are very active and environmentally friendly methods for dye removal.
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Affiliation(s)
- Rahat Javaid
- Renewable Energy Research Center, Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, AIST, 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan.
| | - Umair Yaqub Qazi
- Chemistry Department, College of Science, University of Hafr Al Batin, P.O Box 1803 Hafr Al Batin 31991, Saudi Arabia.
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25
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Xu Z, Qin L, Zhang Y, Li X, Nan J, Guo X, Zhang G. In-situ green assembly of spherical Mn-based metal-organic composites by ion exchange for efficient electrochemical oxidation of organic pollutant. JOURNAL OF HAZARDOUS MATERIALS 2019; 369:299-308. [PMID: 30780026 DOI: 10.1016/j.jhazmat.2019.02.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 01/21/2019] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
In this study, we develop a facile ion exchange strategy for in-situ assembly of novel spherical metal-organic composites on a large scale. The functional groups (-NH2, -COOH and -SO3H) on chelating and exchange resins had significant effects on improving uniform distribution of metallic sites and metal-support interaction. Without any addition of H2O2, Mn-based metal-organic composites realized the recovery of waste metallic ions and exhibited high activity for methylene blue (MB) electro-Fenton degradation (97.8% decoloration and 54.7% TOC removal) within 150 min under low current density (7.53 mA·cm-2) and 3.0 g·L-1 catalyst dosage. Analyses of performance on different active sites (FeII, MnII, CoII, CeIII and CuII) and supports clearly indicated that synergetic effect of MnII and organic supports played crucial roles in electrochemical oxidation. Kinetic rate constant of 0.037 min-1 and turn over frequency of 0.23 h-1 were much better than those of inorganic supported catalysts, which were attributed to intramolecular electron transfer greatly accelerating MnII/MnIII autocatalytic cycle. Meanwhile, possible degradation pathway of MB was proposed by analysis of oxidative intermediate products. Benefiting from excellent properties and millimeter-level size structure, metal-organic composites can be applied in wide pH range of 2.0-9.0 and easily separated in the industrial application.
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Affiliation(s)
- Zehai Xu
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Lei Qin
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yufan Zhang
- Department of Mechanical Engineering, College of Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Xiong Li
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jilin Nan
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals, Department of Catalysis Chemistry and Engineering, Dalian University of Technology, Dalian, 116012, China
| | - Guoliang Zhang
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China.
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26
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He Y, Ma Y, Meng J, Zhang X, Xia Y. Dual electrochemical catalysis of Bi2Mo3O12/Ti cathode for hydrogen peroxide production in electro-Fenton system. J Catal 2019. [DOI: 10.1016/j.jcat.2019.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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27
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Cationic and anionic dyes removal by low-cost hybrid alginate/natural bentonite composite beads: Adsorption and reusability studies. Int J Biol Macromol 2019; 124:854-862. [DOI: 10.1016/j.ijbiomac.2018.11.197] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 10/27/2022]
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28
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Rosales E, Diaz S, Pazos M, Sanromán MA. Comprehensive strategy for the degradation of anti-inflammatory drug diclofenac by different advanced oxidation processes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.04.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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29
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Alim SA, Rao TS, Raju IM, Kumar MR, Lakshmi KD. Fabrication of visible light driven nano structured Copper, Boron codoped TiO2 for photocatalytic removal of Lissamine Green B. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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30
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Pettignano A, Aguilera DA, Tanchoux N, Bernardi L, Quignard F. Alginate: A Versatile Biopolymer for Functional Advanced Materials for Catalysis. STUDIES IN SURFACE SCIENCE AND CATALYSIS 2019. [DOI: 10.1016/b978-0-444-64127-4.00017-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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31
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Zhuang Y, Kong Y, Wang X, Shi B. Novel one step preparation of a 3D alginate based MOF hydrogel for water treatment. NEW J CHEM 2019. [DOI: 10.1039/c8nj06031b] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose a novel one-step method for the preparation of a novel 3D alginate based MOF hydrogel and use it for tetracycline removal.
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Affiliation(s)
- Yuan Zhuang
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Yan Kong
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Xuechun Wang
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Baoyou Shi
- Key Laboratory of Drinking Water Science and Technology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
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32
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Wang B, Wan Y, Zheng Y, Lee X, Liu T, Yu Z, Huang J, Ok YS, Chen J, Gao B. Alginate-based composites for environmental applications: A critical review. CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2018; 49:318-356. [PMID: 34121831 PMCID: PMC8193857 DOI: 10.1080/10643389.2018.1547621] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Alginate-based composites have been extensively studied for applications in energy and environmental sectors due to their biocompatible, nontoxic, and cost-effective properties. This review is designed to provide an overview of the synthesis and application of alginate-based composites. In addition to an overview of current understanding of alginate biopolymer, gelation process, and cross-linking mechanisms, this work focuses on adsorption mechanisms and performance of different alginate-based composites for the removal of various pollutants including dyes, heavy metals, and antibiotics in water and wastewater. While encapsulation in alginate gel beads confers protective benefits to engineered nanoparticles, carbonaceous materials, cells and microbes, alginate-based composites typically exhibit enhanced adsorption performance. The physical and chemical properties of alginate-based composites determine the effectiveness under different application conditions. A series of alginate-based composites and their physicochemical and sorptive properties have been summarized. This critical review not only summarizes recent advances in alginate-based composites but also presents a perspective of future work for their environmental applications.
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Affiliation(s)
- Bing Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Yongshan Wan
- National Health and Environmental Effects Research Laboratory, US EPA, Gulf Breeze, FL 32561, USA
| | - Yuling Zheng
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Xinqing Lee
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Taoze Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Jun Huang
- Hualan Design & Consulting Group Co. Ltd., Nanning 530011, China
- College of Civil Engineering and Architecture Guangxi University, Nanning 530004, China
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Jianjun Chen
- Mid-Florida Research & Education Center, University of Florida, Apopka, FL 32703, USA
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
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33
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Wang BH, Zhang Q, Hong JM. Fe0/C-bentonite alginate beads and oyster shell fixed-bed column combined process to continuously remove N-acetyl-p-aminophenol in persulfate system. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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34
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Poza-Nogueiras V, Arellano M, Rosales E, Pazos M, Sanromán MA, González-Romero E. Electroanalytical techniques applied to monitoring the electro-Fenton degradation of aromatic imidazolium-based ionic liquids. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1236-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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35
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New Approach of Integrated Advanced Oxidation Processes for the Treatment of Lube Oil Processing Wastewater. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3417-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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36
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Mohammadi H, Bina B, Ebrahimi A. A novel three-dimensional electro-Fenton system and its application for degradation of anti-inflammatory pharmaceuticals: Modeling and degradation pathways. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 2018; 117:200-213. [DOI: 10.1016/j.psep.2018.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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37
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Poza-Nogueiras V, Rosales E, Pazos M, Sanromán MÁ. Current advances and trends in electro-Fenton process using heterogeneous catalysts - A review. CHEMOSPHERE 2018. [PMID: 29529567 DOI: 10.1016/j.chemosphere.2018.03.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Over the last decades, advanced oxidation processes have often been used alone, or combined with other techniques, for remediation of ground and surface water pollutants. The application of heterogeneous catalysis to electrochemical advanced oxidation processes is especially useful due to its efficiency and environmental safety. Among those processes, electro-Fenton stands out as the one in which heterogeneous catalysis has been broadly applied. Thus, this review has introduced an up-to-date collation of the current knowledge of the heterogeneous electro-Fenton process, highlighting recent advances in the use of different catalysts such as iron minerals (pyrite, magnetite or goethite), prepared catalysts by the load of metals in inorganic and organic materials, nanoparticles, and the inclusion of catalysts on the cathode. The effects of physical-chemical parameters as well as the mechanisms involved are critically assessed. Finally, although the utilization of this process to remediation of wastewater overwhelmingly outnumber other utilities, several applications have been described in the context of regeneration of adsorbent or the remediation of soils as clear examples of the feasibility of the electro-Fenton process to solve different environmental problems.
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Affiliation(s)
- Verónica Poza-Nogueiras
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - Emilio Rosales
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - Marta Pazos
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - M Ángeles Sanromán
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain.
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38
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Nidheesh PV, Zhou M, Oturan MA. An overview on the removal of synthetic dyes from water by electrochemical advanced oxidation processes. CHEMOSPHERE 2018; 197:210-227. [PMID: 29366952 DOI: 10.1016/j.chemosphere.2017.12.195] [Citation(s) in RCA: 405] [Impact Index Per Article: 67.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 12/29/2017] [Accepted: 12/30/2017] [Indexed: 05/21/2023]
Abstract
Wastewater containing dyes are one of the major threats to our environment. Conventional methods are insufficient for the removal of these persistent organic pollutants. Recently much attention has been received for the oxidative removal of various organic pollutants by electrochemically generated hydroxyl radical. This review article aims to provide the recent trends in the field of various Electrochemical Advanced Oxidation Processes (EAOPs) used for removing dyes from water medium. The characteristics, fundamentals and recent advances in each processes namely anodic oxidation, electro-Fenton, peroxicoagulation, fered Fenton, anodic Fenton, photoelectro-Fenton, sonoelectro-Fenton, bioelectro-Fenton etc. have been examined in detail. These processes have great potential to destroy persistent organic pollutants in aqueous medium and most of the studies reported complete removal of dyes from water. The great capacity of these processes indicates that EAOPs constitute a promising technology for the treatment of the dye contaminated effluents.
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Affiliation(s)
- P V Nidheesh
- CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Mehmet A Oturan
- Université Paris-Est, Laboratoire Géomatériaux et Environnement, (LGE), EA 4508, UPEM, 5 Bd Descartes, 77454 Marne-la-Vallée Cedex 2, France.
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Popescu M, Sandu C, Rosales E, Pazos M, Lazar G, Sanromán MÁ. Evaluation of different cathodes and reaction parameters on the enhancement of the electro-Fenton process. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.04.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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40
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Comprehensive solution for acetamiprid degradation: Combined electro-Fenton and adsorption process. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.05.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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41
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Zhu Y, Qiu S, Ma F, Li G, Deng F, Zheng Y. Melamine-derived carbon electrode for efficient H2O2 electro-generation. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.12.122] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Xue L, Liu J, Li M, Tan L, Ji X, Shi S, Jiang B. Enhanced treatment of coking wastewater containing phenol, pyridine, and quinoline by integration of an E-Fenton process into biological treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9765-9775. [PMID: 28251539 DOI: 10.1007/s11356-017-8644-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
In this study, the pyridine and quinoline could be cometabolically degraded by phenol-cultivated Comamonas sp. strain JB(strain JB). The integration of magnetically immobilized cells of JB and an E-Fenton process into one entity has been designed to prepare a novel integration system to improve the treatment efficiency of phenol, pyridine, and quinoline in coking wastewater. The optimal pH for the integration system was 3.5. Degradation rates of phenol, pyridine, quinoline, and COD by the integration system were significantly exceeded the sum degradation rates of the single E-Fenton process and magnetically immobilized cells at the optimal voltage of 1 V. During the 6 cycles, the integration system still showed higher degradation rates than that by the single magnetically immobilized cells for all the compounds. These findings demonstrated that a synergistic effect existed between the biological treatment and the E-Fenton process, and the applied voltage in the integration system played the key roles in the synergistic effect, which not only electrogenerated H2O2 but also improved the activity of phenol hydroxylase and strain JB concentration.
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Affiliation(s)
- Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
| | - Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, China.
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Meijide J, Gómez J, Pazos M, Sanromán MA. Degradation of thiamethoxam by the synergetic effect between anodic oxidation and Fenton reactions. JOURNAL OF HAZARDOUS MATERIALS 2016; 319:43-50. [PMID: 26968996 DOI: 10.1016/j.jhazmat.2016.02.064] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/16/2016] [Accepted: 02/27/2016] [Indexed: 06/05/2023]
Abstract
In this work, a comparative study using anodic oxidation, Fenton and electro-Fenton treatments was performed in order to determine the synergic effect for the removal of thiamethoxan. The results determined that electro-Fenton process showed high efficiency in comparison with Fenton or anodic oxidation. After that, this hybrid process was optimized and the influence of iron catalyst concentration and applied current intensity on the degradation and mineralization were evaluated. Degradation profiles were monitored by high performance liquid chromatography (HPLC) being satisfactorily described by pseudo-first order kinetic model. At the optimal experimental conditions (300mA and 0.2mM Fe(+2)), the complete degradation of thiamethoxam was achieved after 10min. On the other hand, mineralization of thiamethoxam was monitored by total organic carbon (TOC) decay reaching more than 92% of TOC removal after 8h. Furthermore, a plausible mineralization pathway for the thiamethoxam degradation was proposed based on the identification of by-products such as aromatic intermediates, carboxylic acids and inorganic ions released throughout electro-Fenton process.
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Affiliation(s)
- J Meijide
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310 Vigo, Spain
| | - J Gómez
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310 Vigo, Spain
| | - M Pazos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310 Vigo, Spain
| | - M A Sanromán
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende 36310 Vigo, Spain.
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Bocos E, Oturan N, Pazos M, Sanromán MÁ, Oturan MA. Elimination of radiocontrast agent diatrizoic acid by photo-Fenton process and enhanced treatment by coupling with electro-Fenton process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:19134-19144. [PMID: 27349786 DOI: 10.1007/s11356-016-7054-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 06/07/2016] [Indexed: 06/06/2023]
Abstract
The removal of radiocontrast agent diatrizoic acid (DIA) from water was performed using photo-Fenton (PF) process. First, the effect of H2O2 dosage on mineralization efficiency was determined using ultraviolet (UV) irradiation. The system reached a maximum mineralization degree of 60 % total organic carbon (TOC) removal at 4 h with 20 mM initial H2O2 concentration while further concentration values led to a decrease in TOC abatement efficiency. Then, the effect of different concentrations of Fenton's reagents was studied for homogeneous Fenton process. Obtained results revealed that 0.25 mM Fe(3+) and 20 mM H2O2 were the best conditions, achieving 80 % TOC removal efficiency at 4 h treatment. Furthermore, heterogeneous PF treatment was developed using iron-activated carbon as catalyst. It was demonstrated that this catalyst is a promising option, reaching 67 % of TOC removal within 4 h treatment without formation of iron leachate in the medium. In addition, two strategies of enhancement for process efficiency are proposed: coupling of PF with electro-Fenton (EF) process in two ways: photoelectro-Fenton (PEF) or PF followed by EF (PF-EF) treatments, achieving in both cases the complete mineralization of DIA solution within only 2 h. Finally, the Microtox tests revealed the formation of more toxic compounds than the initial DIA during PF process, while, it was possible to reach total mineralization by both proposed alternatives (PEF or PF-EF) and thus to remove the toxicity of DIA solution.
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Affiliation(s)
- Elvira Bocos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas Marcosende, 36310, Vigo, Spain
- Laboratoire Géomatériaux et Environnement (LGE), Université Paris-Est, EA 4508, 77454, Marne-la-Vallée, France
| | - Nihal Oturan
- Laboratoire Géomatériaux et Environnement (LGE), Université Paris-Est, EA 4508, 77454, Marne-la-Vallée, France
| | - Marta Pazos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas Marcosende, 36310, Vigo, Spain
| | - M Ángeles Sanromán
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas Marcosende, 36310, Vigo, Spain
| | - Mehmet A Oturan
- Laboratoire Géomatériaux et Environnement (LGE), Université Paris-Est, EA 4508, 77454, Marne-la-Vallée, France.
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Titouhi H, Belgaied JE. Heterogeneous Fenton oxidation of ofloxacin drug by iron alginate support. ENVIRONMENTAL TECHNOLOGY 2016; 37:2003-2015. [PMID: 26752017 DOI: 10.1080/09593330.2016.1139630] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new catalytic wet peroxide oxidation of ofloxacin antibiotic is presented in this work. The removal was achieved using a biodegradable sodium alginate-iron material. Several parameters were studied such as iron content, drying duration of the catalytic support, temperature, solid amount and initial drug concentration. The process showed a strong oxidative ability; at optimum conditions, a nearly complete removal of the drug (around 98%) has been reached after three h of treatment. A relatively low decrease of support activity (around 10%) has been observed after three successive oxidation runs and a low iron leaching has been detected (1.2% of the incorporated quantity). The removal of the substrate has been also examined in the absence of hydrogen peroxide in order to discriminate between the contributions of simple adsorption and oxidation processes in the drug disappearance. We also discussed the influence of the studied experimental parameters on the removal kinetic.
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Affiliation(s)
- Hana Titouhi
- a Laboratoire de Chimie Analytique et d'Electrochimie , Institut National des Sciences Appliquées et de Technologie, INSAT, Université de Carthage , Tunis Cedex , Tunisia
| | - Jamel-Eddine Belgaied
- a Laboratoire de Chimie Analytique et d'Electrochimie , Institut National des Sciences Appliquées et de Technologie, INSAT, Université de Carthage , Tunis Cedex , Tunisia
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Titouhi H, Belgaied JE. Removal of ofloxacin antibiotic using heterogeneous Fenton process over modified alginate beads. J Environ Sci (China) 2016; 45:84-93. [PMID: 27372121 DOI: 10.1016/j.jes.2015.12.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 12/09/2015] [Accepted: 12/10/2015] [Indexed: 06/06/2023]
Abstract
The aim of this work is to study the heterogeneous oxidative degradation of ofloxacin antibiotic using a composite material prepared from sodium alginate and cyclohexane dinitrilo tetraacetic acid (CDTA). The characterization tests indicated the successful incorporation of metal chelator and iron. It was also demonstrated that the synthesized beads are mesoporous. The influence of several experimental parameters (i.e.: H2O2 dose, working temperature, beads loading and initial drug concentration) on the process performances was evaluated. The reaction temperature significantly affects the drug conversion efficiency. It was also observed that the synthesized material was efficient toward the target antibiotic degradation in the presence of small quantities of hydrogen peroxide. Under optimum conditions (0.05 g of granules, initial drug concentration=10mg/L, 25μL of 10mmol/L H2O2), conducted in a batch reaction, 94% degradation of ofloxacin was reached. The results also indicate that the composite material showed a reasonable stability; a relatively low decrease of activity after four successive runs (only 9%) and a negligible iron leaching (0.8%) have been observed. The synthesized composite material offered interesting advantages in terms of simplicity, good stability, ease of recovery from the liquid medium after use and its efficiency in the presence of low quantities of oxidant. It constitutes a good candidate in the water treatment area.
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Affiliation(s)
- Hana Titouhi
- Laboratory of Analytical Chemistry and Electrochemistry, National Institute of Applied Sciences and Technology, INSAT, Carthage University, B.P. 676, 1080, Tunis Cedex, Tunisia.
| | - Jamel-Eddine Belgaied
- Laboratory of Analytical Chemistry and Electrochemistry, National Institute of Applied Sciences and Technology, INSAT, Carthage University, B.P. 676, 1080, Tunis Cedex, Tunisia
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Gopalakannan V, Viswanathan N. One pot synthesis of metal ion anchored alginate–gelatin binary biocomposite for efficient Cr(VI) removal. Int J Biol Macromol 2016; 83:450-9. [DOI: 10.1016/j.ijbiomac.2015.10.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 11/26/2022]
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Ben Hammouda S, Adhoum N, Monser L. Chemical oxidation of a malodorous compound, indole, using iron entrapped in calcium alginate beads. JOURNAL OF HAZARDOUS MATERIALS 2016; 301:350-361. [PMID: 26384996 DOI: 10.1016/j.jhazmat.2015.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/02/2015] [Accepted: 09/05/2015] [Indexed: 06/05/2023]
Abstract
Iron-alginate beads (Fe-ABs) were successfully prepared by the ion-gelation method, and applied as heterogeneous Fenton catalysts for the removal of a malodorous compound 'indole'. Similarly, copper-enriched alginate beads (Cu-ABs) were synthesized and tested as like-Fenton catalyst, however, their application proved not to be effective for this purpose. Fe-ABs catalysts were characterized by FTIR, SEM, EDS and AAS spectroscopy. Results pointed out that the parameters affecting Fenton catalysis must be carefully chosen to avoid excessive iron release. Under optimal conditions, complete indole removal and considerably high reduction of TOC, without significant leaching was achieved. Indole decay followed a pseudo-first-order kinetics. The absolute rate constant for indole hydroxylation was 3.59×10(9) M(-1) s(-1), as determined by the competition kinetics method. Four reaction intermediates (Isatin, Dioxindole, Oxindole and Anthralinic acid) were identified by ULC/MS/MS analysis. Short-chain aliphatic carboxylic acids like formic, acetic, oxalic, maleic, oxamic and pyruvic acids were identified by ion exclusion chromatography and as end-products. Based on the identified by-products, a plausible mineralization pathway was proposed. Moreover, the catalyst was recovered quantitatively by simple filtration and reused for several times without significant loss of activity.
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Affiliation(s)
- Samia Ben Hammouda
- Laboratory of Analytical Chemistry and Electrochemistry, National Institute of Applied Sciences and Technology, Carthage University, Centre Urbain Nord B.P. No 676, 1080 Tunis Cedex, Tunisia.
| | - Nafaâ Adhoum
- Laboratory of Analytical Chemistry and Electrochemistry, National Institute of Applied Sciences and Technology, Carthage University, Centre Urbain Nord B.P. No 676, 1080 Tunis Cedex, Tunisia
| | - Lotfi Monser
- Laboratory of Analytical Chemistry and Electrochemistry, National Institute of Applied Sciences and Technology, Carthage University, Centre Urbain Nord B.P. No 676, 1080 Tunis Cedex, Tunisia
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49
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Bocos E, Pazos M, Sanromán MÁ. Electro-Fenton treatment of imidazolium-based ionic liquids: kinetics and degradation pathways. RSC Adv 2016. [DOI: 10.1039/c5ra24070k] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, the removal of five imidazolium-based ionic liquids from water was accomplished by a heterogeneous electro-Fenton treatment.
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Affiliation(s)
- Elvira Bocos
- Department of Chemical Engineering
- University of Vigo
- Vigo
- Spain
| | - Marta Pazos
- Department of Chemical Engineering
- University of Vigo
- Vigo
- Spain
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50
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Qiu S, He D, Ma J, Liu T, Waite TD. Kinetic Modeling of the Electro-Fenton Process: Quantification of Reactive Oxygen Species Generation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.06.103] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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