1
|
Xia C, Shen X. Analysis of factors influencing on Electro-Fenton and research on combination technology (II): a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:46910-46948. [PMID: 38995339 DOI: 10.1007/s11356-024-34159-z] [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: 10/27/2023] [Accepted: 06/24/2024] [Indexed: 07/13/2024]
Abstract
The principle of Fenton reagent is to produce ·OH by mixing H2O2 and Fe2+ to realize the oxidation of organic pollutants, although Fenton reagent has the advantages of non-toxicity and short reaction time, but there are its related defects. The Fenton-like technology has been widely studied because of its various forms and better results than the traditional Fenton technology in terms of pollutant degradation efficiency. This paper reviews the electro-Fenton technology among the Fenton-like technologies and provides an overview of the homogeneous electro-Fenton. It also focuses on summarizing the effects of factors such as H2O2, reactant concentration, reactor volume and electrode quality, reaction time and voltage (potential) on the efficiency of electro-Fenton process. It is shown that appropriate enhancement of H2O2 concentration, voltage (potential) and reaction volume can help to improve the process efficiency; the process efficiency also can be improved by increasing the reaction time and electrode quality. Feeding modes of H2O2 have different effects on process efficiency. Finally, a considerable number of experimental studies have shown that the combination of electro-Fenton with ultrasound, anodic oxidation and electrocoagulation technologies is superior to the single electro-Fenton process in terms of pollutant degradation.
Collapse
Affiliation(s)
- Chongjie Xia
- School of Environmental and Chemical Engineering, Shenyang University of Technology, 110870, Shenyang, People's Republic of China
| | - Xinjun Shen
- School of Environmental and Chemical Engineering, Shenyang University of Technology, 110870, Shenyang, People's Republic of China.
| |
Collapse
|
2
|
Downs CA, Diaz-Cruz MS, White WT, Rice M, Jim L, Punihaole C, Dant M, Gautam K, Woodley CM, Walsh KO, Perry J, Downs EM, Bishop L, Garg A, King K, Paltin T, McKinley EB, Beers AI, Anbumani S, Bagshaw J. Beach showers as sources of contamination for sunscreen pollution in marine protected areas and areas of intensive beach tourism in Hawaii, USA. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129546. [PMID: 35941056 DOI: 10.1016/j.jhazmat.2022.129546] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/21/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
In 2019, sands in nearby runoff streams from public beach showers were sampled on three islands in the State of Hawaii and tested for over 18 different petrochemical UV filters. Beach sands that are directly in the plume discharge of beach showers on three of the islands of Hawaii (Maui, Oahu, Hawai'i) were found to be contaminated with a wide array of petrochemical-based UV-filters that are found in sunscreens. Sands from beach showers across all three islands had a mean concentration of 5619 ng/g of oxybenzone with the highest concentration of 34,518 ng/g of oxybenzone at a beach shower in the Waikiki area of Honolulu. Octocrylene was detected at a majority of the beach shower locations, with a mean concentration of 296.3 ng/g across 13 sampling sites with the highest concentration of 1075 ng/g at the beach shower in Waikiki. Avobenzone, octinoxate, 4-methylbenzylidene camphor and benzophenone-2 were detected, as well as breakdown products of oxybenzone, including benzophenone-1, 2,2'-dihydroxy-4-methoxybenzophenone, and 4-hydroxybenzophenone. Dioxybenzone (DHMB) presented the highest concentration in water (75.4 ng/mL), whereas octocrylene was detected in all water samples. Some of these same target analytes were detected in water samples on coral reefs that are adjacent to the beach showers. Risk assessments for both sand and water samples at a majority of the sampling sites had a Risk Quotient > 1, indicating that these chemicals could pose a serious threat to beach zones and coral reef habitats. There are almost a dozen mitigation options that could be employed to quickly reduce contaminant loads associated with discharges from these beach showers, like those currently being employed (post-study sampling and analysis) in the State of Hawaii, including banning the use of sunscreens using petrochemical-based UV filters or educating tourists before they arrive on the beach.
Collapse
Affiliation(s)
- C A Downs
- Haereticus Environmental Laboratory, P.O. Box 92, Clifford, VA 24533, USA.
| | - M Silvia Diaz-Cruz
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Severo Ochoa Excellence Center, Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, Barcelona 08034, Spain
| | | | - Marc Rice
- Hawai'i Preparatory Academy, 65-1692 Kohala Mountain Road, Kamuela, HI 96743, USA
| | - Laura Jim
- Hawai'i Preparatory Academy, 65-1692 Kohala Mountain Road, Kamuela, HI 96743, USA
| | - Cindi Punihaole
- Kahalu`u Bay Education Center, The Kohala Center, P.O. Box 437462, Kamuela, HI 967, USA
| | - Mendy Dant
- Fair Wind Cruises, Kailua Kona, HI 96740, USA
| | - Krishna Gautam
- Ecotoxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India
| | - Cheryl M Woodley
- US National Oceanic & Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Coral Disease & Health Program, Hollings Marine Laboratory, 331 Ft. Johnson Rd., Charleston, SC 29412, USA
| | - Kahelelani O Walsh
- Hawai'i Preparatory Academy, 65-1692 Kohala Mountain Road, Kamuela, HI 96743, USA
| | - Jenna Perry
- Hawai'i Preparatory Academy, 65-1692 Kohala Mountain Road, Kamuela, HI 96743, USA
| | - Evelyn M Downs
- Haereticus Environmental Laboratory, P.O. Box 92, Clifford, VA 24533, USA
| | - Lisa Bishop
- Friends of Hanauma Bay, P.O. Box 25761, Honolulu, HI 96825-07610, USA
| | - Achal Garg
- Chemists Without Borders, Sacramento, CA 95835, USA
| | - Kelly King
- Maui County Council, 200 S. High St., Wailuku, HI 96793, USA
| | - Tamara Paltin
- Maui County Council, 200 S. High St., Wailuku, HI 96793, USA
| | | | - Axel I Beers
- Maui County Council, 200 S. High St., Wailuku, HI 96793, USA
| | - Sadasivam Anbumani
- Ecotoxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jeff Bagshaw
- Hawaii Division of Forestry and Wildlife, 685 Haleakala Hwy, Kahului, HI 96732, USA
| |
Collapse
|
3
|
Brillas E. Fenton, photo-Fenton, electro-Fenton, and their combined treatments for the removal of insecticides from waters and soils. A review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120290] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
4
|
Reaction kinetics during non-isothermal solid-state synthesis of boron trioxide via boric acid dehydration. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-021-02084-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
5
|
Brillas E. A review on the photoelectro-Fenton process as efficient electrochemical advanced oxidation for wastewater remediation. Treatment with UV light, sunlight, and coupling with conventional and other photo-assisted advanced technologies. CHEMOSPHERE 2020; 250:126198. [PMID: 32105855 DOI: 10.1016/j.chemosphere.2020.126198] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/08/2020] [Accepted: 02/11/2020] [Indexed: 05/03/2023]
Abstract
Wastewaters containing recalcitrant and toxic organic pollutants are scarcely decontaminated in conventional wastewater facilities. Then, there is an urgent challenge the development of powerful oxidation processes to ensure their organic removal in order to preserve the water quality in the environment. This review presents the recent development of an electrochemical advanced oxidation process (EAOP) like the photoelectro-Fenton (PEF) process, covering the period 2010-2019, as an effective treatment for wastewater remediation. The high oxidation ability of this photo-assisted Fenton-based EAOP is due to the combination of in situ generated hydroxyl radicals and the photolytic action of UV or sunlight irradiation over the treated wastewater. Firstly, the fundamentals and characteristics of the PEF process are described to understand the role of oxidizing agents. Further, the properties of the homogeneous PEF process with iron catalyst and UV irradiation and the benefit of sunlight in the homogeneous solar PEF one (SPEF) are discussed, supported with examples over their application to the degradation and mineralization of synthetic solutions of industrial chemicals, herbicides, dyes and pharmaceuticals, as well as real wastewaters. Novel heterogeneous PEF processes involving solid iron catalysts or iron-modified cathodes are subsequently detailed. Finally, the oxidation power of hybrid processes including photocatalysis/PEF, solar photocatalysis/SPEF, photoelectrocatalysis/PEF and solar photoelectrocatalysis/SPEF, followed by that of sequential processes like electrocoagulation/PEF and biological oxidation coupled to SPEF, are analyzed.
Collapse
Affiliation(s)
- Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
| |
Collapse
|
6
|
Guarda PM, Pontes AMS, S. Domiciano R, S. Gualberto L, B. Mendes D, A. Guarda E, Silva JEC. Determination of Carbamates and Thiocarbamates in Water, Soil and Sediment of the Formoso River, TO, Brazil. Chem Biodivers 2020; 17:e1900717. [DOI: 10.1002/cbdv.201900717] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/18/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Patricia M. Guarda
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| | - Antonina M. S. Pontes
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| | - Raquel S. Domiciano
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| | - Larissa S. Gualberto
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| | - Danylo B. Mendes
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| | - Emerson A. Guarda
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| | - José E. C. Silva
- Environmental Chemistry and Biofuels LaboratoryFederal University of Tocantins 77001-090 Palmas, TO Brazil
| |
Collapse
|
7
|
Yang L, Zhang Z. Degradation of six typical pesticides in water by VUV/UV/chlorine process: Evaluation of the synergistic effect. WATER RESEARCH 2019; 161:439-447. [PMID: 31228663 DOI: 10.1016/j.watres.2019.06.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/03/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
Vacuum ultraviolet/ultraviolet/chlorine (VUV/UV/chlorine) is considered a novel advanced oxidation process (AOP), but little is known about its kinetics for pollutant degradation in water treatment. This study investigated the degradation of six typical pesticides, namely dimethoate (DMT), atrazine (ATZ), prometon (PMT), propoxur (PPX), bromacil (BRM) and propachlor (PPC), by VUV/UV/chlorine. The results show that all pesticides were rapidly degraded by VUV/UV/chlorine with a high removal efficiency of over 95% after 60 s. The pesticide degradation fitted well with pseudo-first-order reaction kinetics and a significant synergistic effect was observed during the VUV/UV/chlorine process. The synergistic factor (FV/U/Cl) for DMT, ATZ, PMT, PPX, BRM and PPC were determined to be 1.75, 1.70, 2.06, 1.57, 2.84 and 1.61, respectively, indicating a synergistic improvement of 57%-184% for all pesticides. As hydroxyl radical (HO•) transformed into reactive chlorine species (RCSs), the contribution ratio of RCSs for the pesticide degradation was much higher than that of HO• in the VUV/UV/chlorine process, thus causing the synergistic effect. Solution pH ranging from 5.0 to 10.0 had various influence on the pesticide degradation by VUV/UV/chlorine. As initial concentration of free chlorine increased from 0 to 0.25 mM, the apparent rate constants of the pesticides kept on increasing while the FV/U/Cl first increased and reached the highest value, and decreased afterwards. The formation of nitrite was significantly inhibited during the degradation of all pesticides by VUV/UV/chlorine. It suggests that VUV/UV/chlorine is a promising AOP for the pesticide degradation in water treatment.
Collapse
Affiliation(s)
- Laxiang Yang
- College of Food and Chemical Engineering, Shaoyang University, No. 28, Lane 3, Shaoshui West Road, Shaoyang, 422000, Hunan, China.
| | - Zhenhua Zhang
- College of Food and Chemical Engineering, Shaoyang University, No. 28, Lane 3, Shaoshui West Road, Shaoyang, 422000, Hunan, China
| |
Collapse
|
8
|
Xu F, Chang L, Duan X, Bai W, Sui X, Zhao X. A novel layer-by-layer CNT/PbO2 anode for high-efficiency removal of PCP-Na through combining adsorption/electrosorption and electrocatalysis. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.090] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Guelfi DR, Ye Z, Gozzi F, de Oliveira SC, Machulek Junior A, Brillas E, Sirés I. Ensuring the overall combustion of herbicide metribuzin by electrochemical advanced oxidation processes. Study of operation variables, kinetics and degradation routes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
10
|
Oriol R, Clematis D, Brillas E, Cortina JL, Panizza M, Sirés I. Groundwater Treatment using a Solid Polymer Electrolyte Cell with Mesh Electrodes. ChemElectroChem 2019. [DOI: 10.1002/celc.201801906] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Roger Oriol
- Departament de Química FísicaFacultat de QuímicaUniversitat de Barcelona Martí i Franquès 1–11 08028 Barcelona Spain
| | - Davide Clematis
- Dipartimento di Ingegneria civile, chimica e ambientaleUniversità degli Studi di Genova Fiera del Mare Piazzale Kennedy 1, Pad. D-16129 Genova Italy
| | - Enric Brillas
- Departament de Química FísicaFacultat de QuímicaUniversitat de Barcelona Martí i Franquès 1–11 08028 Barcelona Spain
| | - José L. Cortina
- Chemical Engineering DepartmentEscola d'Enginyeria de Barcelona Est (EEBE)Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH Eduard Maristany 10–14, Campus Diagonal-Besòs 08930 Barcelona Spain
- Barcelona Research Center for Multiscale Science and Engineering Campus Diagonal-Besòs 08930 Barcelona Spain
| | - Marco Panizza
- Dipartimento di Ingegneria civile, chimica e ambientaleUniversità degli Studi di Genova Fiera del Mare Piazzale Kennedy 1, Pad. D-16129 Genova Italy
| | - Ignasi Sirés
- Departament de Química FísicaFacultat de QuímicaUniversitat de Barcelona Martí i Franquès 1–11 08028 Barcelona Spain
| |
Collapse
|
11
|
da Silva LM, Gozzi F, Cavalcante RP, de Oliveira SC, Brillas E, Sirés I, Machulek A. Assessment of 4-Aminoantipyrine Degradation and Mineralization by Photoelectro-Fenton with a Boron-Doped Diamond Anode: Optimization, Treatment in Municipal Secondary Effluent, and Toxicity. ChemElectroChem 2019. [DOI: 10.1002/celc.201801651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lucas M. da Silva
- Institute of Chemistry; Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555, CP 549 Campo Grande, MS 79074-460 Brazil
| | - Fábio Gozzi
- Institute of Chemistry; Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555, CP 549 Campo Grande, MS 79074-460 Brazil
| | - Rodrigo P. Cavalcante
- Institute of Chemistry; Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555, CP 549 Campo Grande, MS 79074-460 Brazil
| | - Silvio C. de Oliveira
- Institute of Chemistry; Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555, CP 549 Campo Grande, MS 79074-460 Brazil
| | - Enric Brillas
- Departament de Química Física Facultat de Química; Universitat de Barcelona Martí i Franquès 1-11; 08028 Barcelona Spain
| | - Ignasi Sirés
- Departament de Química Física Facultat de Química; Universitat de Barcelona Martí i Franquès 1-11; 08028 Barcelona Spain
| | - Amilcar Machulek
- Institute of Chemistry; Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555, CP 549 Campo Grande, MS 79074-460 Brazil
| |
Collapse
|
12
|
Guelfi DRV, Gozzi F, Sirés I, Brillas E, Machulek A, de Oliveira SC. Antituberculosis drug isoniazid degraded by electro-Fenton and photoelectro-Fenton processes using a boron-doped diamond anode and a carbon-PTFE air-diffusion cathode. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:4415-4425. [PMID: 29700752 DOI: 10.1007/s11356-018-2024-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 04/12/2018] [Indexed: 06/08/2023]
Abstract
Solutions with 0.65 mM of the antituberculosis drug isoniazid (INH) in 0.050 M Na2SO4 at pH 3.0 were treated by electro-Fenton (EF) and UVA photoelectro-Fenton (PEF) processes using a cell with a BDD anode and a carbon-PTFE air-diffusion cathode. The influence of current density on degradation, mineralization rate, and current efficiency has been thoroughly evaluated in EF. The effect of the metallic catalyst (Fe2+ or Fe3+) and the formation of products like short-chain linear aliphatic carboxylic acids were assessed in PEF. Two consecutive pseudo-first-order kinetic regions were found using Fe2+ as catalyst. In the first region, at short time, the drug was rapidly oxidized by ●OH, whereas in the second region, at longer time, a resulting Fe(III)-INH complex was much more slowly removed by oxidants. INH disappeared completely at 300 min by EF, attaining 88 and 94% mineralization at 66.6 and 100 mA cm-2, respectively. Isonicotinamide and its hydroxylated derivative were identified as aromatic products of INH by GC-MS and oxalic, oxamic, and formic acids were quantified by ion-exclusion HPLC. The PEF treatment of a real wastewater polluted with the drug led to slower INH and TOC abatements because of the parallel destruction of its natural organic matter content.
Collapse
Affiliation(s)
- Diego R V Guelfi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, Campo Grande, MS, 79070-900, Brazil
| | - Fábio Gozzi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, Campo Grande, MS, 79070-900, Brazil
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028, Barcelona, Spain.
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Amílcar Machulek
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, Campo Grande, MS, 79070-900, Brazil
| | - Silvio César de Oliveira
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, Campo Grande, MS, 79070-900, Brazil.
| |
Collapse
|
13
|
Guelfi DRV, Brillas E, Gozzi F, Machulek A, de Oliveira SC, Sirés I. Influence of electrolysis conditions on the treatment of herbicide bentazon using artificial UVA radiation and sunlight. Identification of oxidation products. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 231:213-221. [PMID: 30342334 DOI: 10.1016/j.jenvman.2018.10.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/06/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
The main objective of this work is to demonstrate the viability of solar photoelectro-Fenton (SPEF) process to degrade pesticides in urban wastewater matrix, selecting the herbicide bentazon as a model molecule. In order to provide a correct assessment of the role of the different oxidants and catalysts involved, bentazon was comparatively treated by anodic oxidation with electrogenerated H2O2 (AO-H2O2), electro-Fenton (EF) and UVA-assisted EF (i.e., PEF) processes as well, either in sulfate or chloride media. Trials were made in a stirred tank reactor with an air-diffusion cathode and a boron-doped diamond (BDD), RuO2-based or Pt anode. In chlorinated matrices, the herbicide disappeared more rapidly using a RuO2-based anode because of the generated active chlorine. The best mineralization performance was always obtained using BDD due to its higher oxidation power, which allowed the complete destruction of refractory chloroderivatives. A concentration of 0.50 mM Fe2+ was found optimal to catalyze Fenton's reaction, largely enhancing the mineralization process under the action of OH. Among photo-assisted treatments, sunlight was proven superior to a UVA lamp to promote the photolysis of intermediates, owing to its greater UV irradiance and contribution of visible photons, although PEF also allowed achieving a large mineralization. In all cases, bentazon decay obeyed a pseudo-first-order kinetics. SPEF treatment in urban wastewater using BDD at only 16.6 mA cm-2 yielded 63.2% mineralization. A thorough, original reaction pathway for bentazon degradation is proposed, including seven non-chlorinated aromatics, sixteen chloroaromatics and two chloroaliphatics identified by GC-MS, most of them not previously reported in literature. Ion-exclusion HPLC allowed the detection of seven short-chain linear carboxylic acids.
Collapse
Affiliation(s)
- Diego R V Guelfi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Fábio Gozzi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Amílcar Machulek
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Silvio C de Oliveira
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| |
Collapse
|
14
|
Yang N, Yu S, Macpherson JV, Einaga Y, Zhao H, Zhao G, Swain GM, Jiang X. Conductive diamond: synthesis, properties, and electrochemical applications. Chem Soc Rev 2019; 48:157-204. [DOI: 10.1039/c7cs00757d] [Citation(s) in RCA: 236] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review summarizes systematically the growth, properties, and electrochemical applications of conductive diamond.
Collapse
Affiliation(s)
- Nianjun Yang
- Institute of Materials Engineering
- University of Siegen
- Siegen 57076
- Germany
| | - Siyu Yu
- Institute of Materials Engineering
- University of Siegen
- Siegen 57076
- Germany
| | | | - Yasuaki Einaga
- Department of Chemistry
- Keio University
- Yokohama 223-8522
- Japan
| | - Hongying Zhao
- School of Chemical Science and Engineering
- Tongji University
- Shanghai 200092
- China
| | - Guohua Zhao
- School of Chemical Science and Engineering
- Tongji University
- Shanghai 200092
- China
| | | | - Xin Jiang
- Institute of Materials Engineering
- University of Siegen
- Siegen 57076
- Germany
| |
Collapse
|
15
|
Antonio da Silva D, Cavalcante RP, Cunha RF, Machulek A, César de Oliveira S. Optimization of nimesulide oxidation via a UV-ABC/H 2O 2 treatment process: Degradation products, ecotoxicological effects, and their dependence on the water matrix. CHEMOSPHERE 2018; 207:457-468. [PMID: 29807345 DOI: 10.1016/j.chemosphere.2018.05.115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 05/14/2018] [Accepted: 05/20/2018] [Indexed: 06/08/2023]
Abstract
Nimesulide (Nim) degradation in ultrapure water (UW) and municipal sewage (MS) via UV-ABC/H2O2 was investigated. The variables included in the experimental design were time, initial Nim, and initial H2O2 concentrations. Resulting decreases in Nim concentration (monitored by high performance liquid chromatography (HPLC) using a photodiode array detector operating at a maximum UV absorbance of 300 nm), mineralization (from total organic carbon (TOC) measurements), and ecotoxicity (assays employing the bioindicators Daphnia similis, Artemia salina, and Allium cepa) were also studied. Degradation rates of 90% or higher were found for 15-20 min reaction times, employing combinations of [H2O2] = 50-150 mg L-1 and [Nim] = 8.5-15 mg L-1 prepared with MS. Mineralization rates of 70% and higher were attained within 60 min of reaction for [Nim] = 15 mg L-1 prepared in MS with [H2O2] = 100 mg L-1. Nim by-products were detected and possible degradation pathways proposed. Ecotoxicity evaluation using A. salina, D. similis, and A. cepa revealed that the treated samples had significantly lower toxicity. Exposure to treated samples resulted in survival rates of 79% for A. salina and over 90% for D. similis. No root growth inhibition was observed in A. cepa exposed to treated samples, whereas exposure to untreated samples inhibited root growth by 60%. Statistical analysis revealed elimination of cytotoxicity and reduction of genotoxicity against A. cepa. The results showed that the UV-ABC/H2O2 process can be employed as a pre- or post-treatment method to remove Nim from contaminated wastewater.
Collapse
Affiliation(s)
- Débora Antonio da Silva
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, CP 549, Campo Grande, MS 79074-460, Brazil
| | - Rodrigo Pereira Cavalcante
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, CP 549, Campo Grande, MS 79074-460, Brazil
| | - Rebeca Fabbro Cunha
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, CP 549, Campo Grande, MS 79074-460, Brazil
| | - Amilcar Machulek
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, CP 549, Campo Grande, MS 79074-460, Brazil.
| | - Silvio César de Oliveira
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, CP 549, Campo Grande, MS 79074-460, Brazil.
| |
Collapse
|
16
|
Degradation of herbicide S-metolachlor by electrochemical AOPs using a boron-doped diamond anode. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.10.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
17
|
Buftia G, Rosales E, Pazos M, Lazar G, Sanromán MA. Electro-Fenton process for implementation of acid black liquor waste treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:397-404. [PMID: 29674263 DOI: 10.1016/j.scitotenv.2018.04.139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
In this work, an eco-friendly solution for the remediation of wastewater generated in the lignin recovery process from eco-industrial paper mill has been proposed in their way towards a more circular economy strategy. Thus, the application of the electro-Fenton process for the degradation of the non-recovered lignin and other organic compounds form a scarcely studied acid black liquor waste (ABLW) was successfully performed. This treatment was able to operate in a range of COD loads (0.5-19.5mgO2·L-1) showing high degradation values of the ABLW determined by the abatement of color, total phenolic content and COD. Then, the optimization of the working conditions for the design of a sustainable treatment system with optimum efficiency was carried out using a response surface methodology. The experiment carried out in the calculated optimal conditions for the electro-Fenton degradation process (current intensity 132.5mA, catalyst dosage of 0.10mM, and temperature 40°C) showed a COD removal of 74.82% and current efficiency 77.79%, close to the theoretical value predicted by the model 73.12% and 77.06%, respectively. In addition, the identification of the final products permitted to confirm the mineralization efficiency.
Collapse
Affiliation(s)
- Gabriel Buftia
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus Lagoas-Marcosende, 36310 Vigo, Spain; Faculty of Engineering, "Vasile Alecsandri" University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
| | - Emilio Rosales
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
| | - Marta Pazos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Gabriel Lazar
- Faculty of Engineering, "Vasile Alecsandri" University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
| | - María Angeles Sanromán
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| |
Collapse
|
18
|
de Melo da Silva L, Gozzi F, Sirés I, Brillas E, de Oliveira SC, Machulek A. Degradation of 4-aminoantipyrine by electro-oxidation with a boron-doped diamond anode: Optimization by central composite design, oxidation products and toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 631-632:1079-1088. [PMID: 29727934 DOI: 10.1016/j.scitotenv.2018.03.092] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/12/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Electro-oxidation with electrogenerated H2O2 (EO-H2O2) was applied to treat acidic aqueous solutions of 4-aminoantipyrine (4-AA), a persistent drug metabolite of dipyrone, in sulfate medium. Trials were made using a boron-doped diamond anode in the presence of H2O2 electrogenerated on site. A 24 central composite design (CCD) was employed to evaluate the effect of four independent variables, namely current density (j), pH, 4-AA concentration and electrolysis time, on the percentages of degradation and mineralization, as well as on mineralization current efficiency (MCE). Predicted responses agreed with observed values, showing linear trendlines with good R2 and R2adj values. The degradation was optimum at j=77.5mAcm-2, pH3.5 and 62.5mgL-1 4-AA, leading to 63% and 99% removal after 3 and 7min, respectively. For those solutions, the largest mineralization was found at j=77.5mAcm-2, attaining 45% abatement at 175min. Low MCE values were obtained in all electrolyses. An initial route for 4-AA degradation is proposed based on one dimer and eleven aromatic and aliphatic intermediates detected in the treated solutions at pH3.5 by LC-MS. The initial 62.5mgL-1 solution at pH3.5 presented acute toxicity on Artemia salina larvae, with LC50=13.6mgL-1, being substantially reduced after 3 and 7min of EO-H2O2 at j=77.5mAcm-2 due to the formation of less toxic derivatives.
Collapse
Affiliation(s)
- Lucas de Melo da Silva
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555; CP 549, Campo Grande, MS 79074-460, Brazil
| | - Fábio Gozzi
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555; CP 549, Campo Grande, MS 79074-460, Brazil
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Silvio Cesar de Oliveira
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555; CP 549, Campo Grande, MS 79074-460, Brazil
| | - Amilcar Machulek
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller, 1555; CP 549, Campo Grande, MS 79074-460, Brazil.
| |
Collapse
|
19
|
Alcocer S, Picos A, Uribe AR, Pérez T, Peralta-Hernández JM. Comparative study for degradation of industrial dyes by electrochemical advanced oxidation processes with BDD anode in a laboratory stirred tank reactor. CHEMOSPHERE 2018; 205:682-689. [PMID: 29729622 DOI: 10.1016/j.chemosphere.2018.04.155] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/09/2018] [Accepted: 04/22/2018] [Indexed: 06/08/2023]
Abstract
Comparative degradation of the industrial dyes Blue BR, Violet SBL and Brown MF 50 mg L-1 has been studied by the electrochemical oxidation (EOx), electro-Fenton (EF), photoelectro-Fenton (PEF) process based on BDD electrode. Each dye was tested in 0.05 mM Na2SO4 with 0.5 mM Fe2+ at pH 3.0, and electrolyzed in a stirred tank reactor under galvanostatic conditions with 2.0, 5.0, 7.0, 11.0 and 18.0 mA cm-2. Dyes were oxidized via hydroxyl radicals (OH) formed at the BDD anode from water oxidation coupled with Fenton's reaction cathodically produced hydrogen peroxide (H2O2). Under Na2SO4 medium close to 100% the decolorization was achieved. Through the color abatement rate the dyes behavior was analyzed at the beginning of the oxidation process. Dissolved Organic Carbon (DOC) was tested to evaluate the degradation. From DOC removal, it was established an increasing relative oxidation power of the EOx < EF < PEF, according with their decolorization trend. This study highlights the potential of the electrochemical/BDD process for the degradation of industrial dyes found in wastewaters under appropriate experimental conditions.
Collapse
Affiliation(s)
- Salvador Alcocer
- Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato. Universidad de Guanajuato, Guanajuato, Gto, 36050, Mexico; Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Campus Guanajuato. Universidad de Guanajuato, Guanajuato, Gto, 36050, Mexico
| | - Alain Picos
- Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato. Universidad de Guanajuato, Guanajuato, Gto, 36050, Mexico
| | - Agustín R Uribe
- Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Campus Guanajuato. Universidad de Guanajuato, Guanajuato, Gto, 36050, Mexico
| | - Tzayam Pérez
- Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Campus Guanajuato. Universidad de Guanajuato, Guanajuato, Gto, 36050, Mexico.
| | - Juan M Peralta-Hernández
- Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato. Universidad de Guanajuato, Guanajuato, Gto, 36050, Mexico.
| |
Collapse
|
20
|
Mosleh S, Rahimi MR, Ghaedi M, Asfaram A, Javadian H, Sadeghfar F, Jannesar R. Visible-light-driven photocatalytic degradation of fenpyroximate in rotating packed bed reactor using Fe3
O4
@PbS@Ni2
P magnetic nanocomposite photocatalyst: Response surface modelling and optimization. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4513] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Soleiman Mosleh
- Department of Gas and Petroleum; Yasouj University; Gachsaran Iran
| | - Mahmood Reza Rahimi
- Process Intensification Laboratory, Chemical Engineering Department; Yasouj University; Yasouj Iran
| | | | - Arash Asfaram
- Medicinal Plants Research Center; Yasuj University of Medical Sciences; Yasuj Iran
| | - Hamedreza Javadian
- Department of Chemical Engineering, ETSEIB; Universitat Politècnica de Catalunya; Barcelona Spain
| | - Fardin Sadeghfar
- Chemistry Department; Yasouj University; Yasouj Iran
- Department of Biotechnology and Microbial Nanotechnology; Dena Pathobiology Laboratory; Yasuj Iran
| | - Ramin Jannesar
- Department of Biotechnology and Microbial Nanotechnology; Dena Pathobiology Laboratory; Yasuj Iran
| |
Collapse
|
21
|
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]
|
22
|
Poza-Nogueiras V, Arellano M, Rosales E, Pazos M, González-Romero E, Sanromán MA. Heterogeneous electro-Fenton as plausible technology for the degradation of imidazolinium-based ionic liquids. CHEMOSPHERE 2018; 199:68-75. [PMID: 29428517 DOI: 10.1016/j.chemosphere.2018.01.174] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
Conventional water treatments are generally inadequate for degradation of emerging pollutants such as ionic liquids (ILs). The use of heterogeneous electro-Fenton (HEF) has attracted great interest, due to its ability to efficiently oxidize a wide range of organic pollutants operating in cycles or in continuous mode. In this study, the removal of a complex IL from the imidazolinium family (1,3-Bis(2,4,6-trimethylphenyl)imidazolinium chloride), by means of HEF using iron alginate spheres as catalyst has been investigated, resulting in significant TOC decay after 6 h. The optimization of the key process parameters (current, IL concentration and catalyst dosage) has been performed using a Box-Behnken experimental design and achieving 76.98% of TOC abatement in 2 h of treatment. Current proved to be a crucial parameter and high catalyst dosage is required to achieve the maximum removal. In addition, an insight about the availability of iron into the reactor and the evolution of several intermediates has been carried out by employing differential pulse voltammetry on screen-printed carbon electrodes. The evolution of the different voltammetric peaks confirmed the influence of iron release, and the generation of several iron complexes has permitted the comprehension of the degradation pathway, which has been validated by chromatographic techniques.
Collapse
Affiliation(s)
- V Poza-Nogueiras
- Centro de Investigación Tecnolóxico Industrial - MTI, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - M Arellano
- Centro de Investigación Tecnolóxico Industrial - MTI, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - E Rosales
- Centro de Investigación Tecnolóxico Industrial - MTI, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - M Pazos
- Centro de Investigación Tecnolóxico Industrial - MTI, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - E González-Romero
- Department of Analytical and Food Chemistry, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
| | - M A Sanromán
- Centro de Investigación Tecnolóxico Industrial - MTI, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
| |
Collapse
|
23
|
Gozzi F, Sirés I, de Oliveira SC, Machulek A, Brillas E. Influence of chelation on the Fenton-based electrochemical degradation of herbicide tebuthiuron. CHEMOSPHERE 2018; 199:709-717. [PMID: 29471241 DOI: 10.1016/j.chemosphere.2018.02.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 01/27/2018] [Accepted: 02/08/2018] [Indexed: 06/08/2023]
Abstract
This study describes the performance of electro-Fenton (EF) and photoelectro-Fenton (PEF) processes to degrade the herbicide tebuthiuron (TBH) in 0.050 M Na2SO4 at pH = 3.0. Experiments were performed in an undivided cell equipped with a boron-doped diamond (BDD) or Pt anode and an air-diffusion cathode that produces H2O2. Physisorbed hydroxyl radicals (M(OH)) generated from water oxidation at the anode and/or free OH formed from Fenton's reaction acted as main oxidants. All processes became much more effective using a BDD anode because of the higher oxidation power of BDD(OH). Sulfate and nitrate were the predominant ions released during TBH destruction. In both, EF and PEF treatments, two distinct kinetic regimes were observed, the first one corresponding to the oxidation of free TBH by OH and the second one to that of the Fe(III)-TBH complex by M(OH). The effect of Fe2+ and TBH concentrations on the kinetics of both regions has been examined. Moreover, a poor mineralization was reached with Pt anode, whereas almost total mineralization was attained by EF and PEF with BDD. Both processes showed analogous mineralization rates because the intermediates produced could not be photodegraded by UVA light. Gas chromatography-mass spectrometry analysis of electrolyzed solutions revealed the generation of eight heteroaromatics along with 1,3-dimethylurea, which have been included in a reaction pathway proposed for the initial degradation of TBH.
Collapse
Affiliation(s)
- Fábio Gozzi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, MS 79070-900, Campo Grande, Brazil
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Silvio César de Oliveira
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, MS 79070-900, Campo Grande, Brazil
| | - Amílcar Machulek
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Caixa postal 549, MS 79070-900, Campo Grande, Brazil
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| |
Collapse
|
24
|
Darvishi Cheshmeh Soltani R, Mashayekhi M. Decomposition of ibuprofen in water via an electrochemical process with nano-sized carbon black-coated carbon cloth as oxygen-permeable cathode integrated with ultrasound. CHEMOSPHERE 2018; 194:471-480. [PMID: 29232640 DOI: 10.1016/j.chemosphere.2017.12.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 11/18/2017] [Accepted: 12/06/2017] [Indexed: 06/07/2023]
Abstract
The main aim of the present investigation was the treatment of ibuprofen (IBP)-polluted aquatic phase using a novel oxygen-permeable cathode (OPC)-equipped electrochemical process (ECP) integrated with ultrasound (US). According to kinetic modeling, the decomposition rate of IBP by the integrated process was 3.2 × 10-2 min-1 which was significant in comparison with the OPC-equipped ECP (1.4 × 10-2 min-1) and US alone (2.4 × 10-3 min-1). Increasing the current resulted in the enhanced generation of H2O2 and consequently, improved the degradation of IBP in the solution. Excessive concentrations of Na2SO4 as supporting electrolyte led to no significant enhancement in the reactor efficiency. At initial IBP concentration of 1 mg L-1, complete removal of IBP with reaction rate of 1.7 × 10-1 min-1 was happened within a short reaction time of 30 min. The pulse mode of US led to more than 10% increase in the removal efficiency compared with the normal mode. The presence of scavenging compound of methanol caused the highest drop in the efficiency of the integrated treatment process, indicating the substantial role of free hydroxyl radicals in the degradation of IBP. Intermediate byproducts generated in the solution during the decomposition were also identified and interpreted.
Collapse
Affiliation(s)
| | - Masumeh Mashayekhi
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
| |
Collapse
|
25
|
Photoelectrochemical and photocatalytic systems based on titanates for hydrogen peroxide formation. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.06.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
26
|
Ridruejo C, Centellas F, Cabot PL, Sirés I, Brillas E. Electrochemical Fenton-based treatment of tetracaine in synthetic and urban wastewater using active and non-active anodes. WATER RESEARCH 2018; 128:71-81. [PMID: 29091806 DOI: 10.1016/j.watres.2017.10.048] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/18/2017] [Accepted: 10/21/2017] [Indexed: 06/07/2023]
Abstract
The electrochemical degradation of tetracaine hydrochloride has been studied in urban wastewater. Treatments in simulated matrix with similar ionic composition as well as in 0.050 M Na2SO4 were comparatively performed. The cell contained an air-diffusion cathode for H2O2 electrogeneration and an anode selected among active Pt, IrO2-based and RuO2-based materials and non-active boron-doped diamond (BDD). Electrochemical oxidation with electrogenerated H2O2 (EO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF) were comparatively assessed at pH 3.0 and constant current density. The pharmaceutical and its byproducts were oxidized by OH formed from water oxidation at the anode surface and in the bulk from Fenton's reaction, which occurred upon addition of 0.50 mM Fe2+ in all media, along with active chlorine originated from the anodic oxidation of Cl- contained in the simulated matrix and urban wastewater. The PEF process was the most powerful treatment regardless of the electrolyte composition, owing to the additional photolysis of intermediates by UVA radiation. The use of BDD led to greater mineralization compared to other anodes, being feasible the total removal of all organics from urban wastewater by PEF at long electrolysis time. Chlorinated products were largely recalcitrant when Pt, IrO2-based or RuO2-based anodes were used, whereas they were effectively destroyed by BDD(OH). Tetracaine decay always obeyed a pseudo-first-order kinetics, being slightly faster with the RuO2-based anode in Cl- media because of the higher amounts of active chlorine produced. Total nitrogen and concentrations of NH4+, NO3-, ClO3-, ClO4- and active chlorine were determined to clarify the behavior of the different electrodes in PEF. Eight intermediates were identified by GC-MS and fumaric and oxalic acids were quantified as final carboxylic acids by ion-exclusion HPLC, allowing the proposal of a plausible reaction sequence for tetracaine mineralization by PEF in Cl--containing medium.
Collapse
Affiliation(s)
- Carlota Ridruejo
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Francesc Centellas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Pere L Cabot
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament 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 Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| |
Collapse
|
27
|
Bouzayani B, Meijide J, Pazos M, Elaoud SC, Sanroman MA. Removal of polyvinylamine sulfonate anthrapyridone dye by application of heterogeneous electro-Fenton process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017. [PMID: 28639017 DOI: 10.1007/s11356-017-9468-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Diversity and rapidly multiplication of the pollutants incite as to improve the conventional treatments wastewater methods. One of the bottlenecks often faced is the presence into wastewater of organic pollutants with complex structures that requests the design of efficient processes. Thus, this work investigates the removal of polyvinylamine sulfonate anthrapyridone (PSA) dye which complex structure makes difficult its degradation by conventional technologies. For that, a heterogeneous oxidative process using pyrite as sustainable catalyst was designed. Initially, the performance of the system BBD-carbon felt as anode and cathode, respectively for the production of H2O2 was determined in comparison with system boron-doped diamond nickel foam. The carbon felt electrode provided the highest oxidant production, and it was selected for the treatment of the polymeric dye. Several oxidative processes were evaluated, and the best degradation levels were obtained by application of electro-Fenton-pyrite process. In addition, it was determined that dye removal followed a kinetic model of pseudo-first-order achieving the highest efficiency by operation at optimum dosage of pyrite 2 g/L and 200 mA of current intensity. Depending on the optimal experimental conditions, these values lead to a nearly complete mineralization (total organic carbon removal of 95%) after 6 h. Furthermore, the reusability of pyrite was evaluated, by removal of PSA in four cycles.
Collapse
Affiliation(s)
- Bakhta Bouzayani
- BIOSUV Group, University of Vigo, MTI Building, Campus Universitario de Vigo, 36310, Vigo, Spain
- Laboratory of the Physico-Chemistry of Solid States, University of Sfax, 3000, Sfax, Tunisia
| | - Jessica Meijide
- BIOSUV Group, University of Vigo, MTI Building, Campus Universitario de Vigo, 36310, Vigo, Spain
| | - Marta Pazos
- BIOSUV Group, University of Vigo, MTI Building, Campus Universitario de Vigo, 36310, Vigo, Spain
| | - Sourour Chaâbane Elaoud
- Laboratory of the Physico-Chemistry of Solid States, University of Sfax, 3000, Sfax, Tunisia
| | - Maria Angeles Sanroman
- BIOSUV Group, University of Vigo, MTI Building, Campus Universitario de Vigo, 36310, Vigo, Spain.
| |
Collapse
|
28
|
Ghazouani M, Akrout H, Bousselmi L. Nitrate and carbon matter removals from real effluents using Si/BDD electrode. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9895-9906. [PMID: 27623854 DOI: 10.1007/s11356-016-7563-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
This work investigated the electrochemical treatment of four real effluents which were municipal wastewater (MWW), human urine (HU), river water (Wadi), and slaughterhouse wastewater (SHWW). The treatment was performed on a Boron-Doped Diamond (BDD) as anode/cathode material with an applied current density of 35.7 mA cm-2 and without any reagent addition. Effluent characterization before treatment indicated that nitrogen pollution existed essentially as ammonium/ammonia ions, low level of nitrate, and in some cases as nitrite form. Organic pollution was also determined by COD values which were 920, 7300, 320, and 2280 mg O2 L-1 for MWW, HU, Wadi, and SHWW effluents, respectively. The effectiveness of the electrochemical oxidation/reduction was assessed by nitrogenous compounds and COD removals. Obtained removals underlined the simultaneous oxidation and reduction at the BDD interfaces of the main species present in the real effluents as well as the electro-generated ones. Results confirmed the high performance of BDD electrode for removal of coexistent pollutants from the studied matrix. The oxidation of organic matter and ammonium/ammonia as well as the kinetic of COD degradation was rapid in acidic medium (HU case) than that in neutral and alkaline medium (MWW, Wadi, and SHWW). Moreover, the phytotoxicity test showed less toxic behavior only in the cases of MWW and SHWW with a Germination Index equal to 58.8 and 72.2 %, respectively. The EC and ACE were also evaluated for all studied wastewaters, and the lowest EC value (0.03 kWh (g COD)-1) was obtained for the more charged effluent (HU).
Collapse
Affiliation(s)
- Mouna Ghazouani
- Laboratory of Wastewaters and Environment, Centre of Water Researches and Technologies (CERTE), Techopark Borj Cedria, Touristic road of Soliman, BP 273, 8020, Soliman, Tunisia
| | - Hanene Akrout
- Laboratory of Wastewaters and Environment, Centre of Water Researches and Technologies (CERTE), Techopark Borj Cedria, Touristic road of Soliman, BP 273, 8020, Soliman, Tunisia.
| | - Latifa Bousselmi
- Laboratory of Wastewaters and Environment, Centre of Water Researches and Technologies (CERTE), Techopark Borj Cedria, Touristic road of Soliman, BP 273, 8020, Soliman, Tunisia
| |
Collapse
|