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Oturan N, van Hullebusch ED, Zhang H, Mazeas L, Budzinski H, Le Menach K, Oturan MA. Occurrence and Removal of Organic Micropollutants in Landfill Leachates Treated by Electrochemical Advanced Oxidation Processes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:12187-12196. [PMID: 26378656 DOI: 10.1021/acs.est.5b02809] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In recent years, electrochemical advanced oxidation processes have been shown to be an effective alternative for the removal of refractory organic compounds from water. This study is focused on the effective removal of recalcitrant organic matter (micropollutants, humic substances, etc.) present in municipal solid waste landfill leachates. A mixture of eight landfill leachates has been studied by the electro-Fenton process using a Pt or boron-doped diamond (BDD) anode and a carbon felt cathode or by the anodic oxidation process with a BDD anode. These processes exhibit great oxidation ability due to the in situ production of hydroxyl radicals ((•)OH), a highly powerful oxidizing species. Both electrochemical processes were shown to be efficient in the removal of dissolved total organic carbon (TOC) from landfill leachates. Regarding the electro-Fenton process, the replacement of the classical anode Pt by the anode BDD allows better performance in terms of dissolved TOC removal. The occurrence and removal yield of 19 polycyclic aromatic hydrocarbons, 15 volatile organic compounds, 7 alkylphenols, 7 polychlorobiphenyls, 5 organochlorine pesticides, and 2 polybrominated diphenyl ethers in landfill leachate were also investigated. Both electrochemical processes allow one to reach a quasicomplete removal (about 98%) of these organic micropollutants.
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Affiliation(s)
- Nihal Oturan
- Laboratoire Géomatériaux et Environnement, Université Paris-Est, EA 4508, UPEM , 5 Boulevard Descartes, Marne-la-Vallée 77454 Cedex 2, France
| | - Eric D van Hullebusch
- Laboratoire Géomatériaux et Environnement, Université Paris-Est, EA 4508, UPEM , 5 Boulevard Descartes, Marne-la-Vallée 77454 Cedex 2, France
| | - Hui Zhang
- Department of Environmental Engineering, Wuhan University , P.O. Box C319 Luoyu Road 129#, Wuhan 430079, China
| | - Laurent Mazeas
- Hydrosystems and Bioprocesses Research Unit, IRSTEA , 1 Rue Pierre-Gilles de Gennes, CS 10030, Antony F-92761 Cedex, France
| | - Hélène Budzinski
- Environnements et Paléoenvironnements Océaniques et Continentaux, EPOC-UMR 5805 CNRS, Laboratoire de Physico-et Toxico-Chimie de l'environnement (LPTC), Université de Bordeaux, Bâtiment A12, 351 Cours de la Libération, 33405 Talence, France
| | - Karyn Le Menach
- Environnements et Paléoenvironnements Océaniques et Continentaux, EPOC-UMR 5805 CNRS, Laboratoire de Physico-et Toxico-Chimie de l'environnement (LPTC), Université de Bordeaux, Bâtiment A12, 351 Cours de la Libération, 33405 Talence, France
| | - Mehmet A Oturan
- Laboratoire Géomatériaux et Environnement, Université Paris-Est, EA 4508, UPEM , 5 Boulevard Descartes, Marne-la-Vallée 77454 Cedex 2, France
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Vallejo M, Fernández-Castro P, San Román MF, Ortiz I. Assessment of PCDD/Fs formation in the Fenton oxidation of 2-chlorophenol: Influence of the iron dose applied. CHEMOSPHERE 2015; 137:135-141. [PMID: 26134538 DOI: 10.1016/j.chemosphere.2015.06.056] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 06/14/2015] [Accepted: 06/20/2015] [Indexed: 06/04/2023]
Abstract
Toxic polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) may be formed during remediation of chlorinated phenols via Fenton oxidation. To highlight the need for monitoring the production of toxic byproducts in these reactions, this work assessed the influence of iron dose (0.09-0.36 mM) on the Fenton oxidation of 2-chlorophenol (2-CP, 15.56 mM), a potential precursor of PCDD/Fs, by quantifying 2-CP removal and mineralization rates as well as byproducts yields, including PCDD/Fs. Although the increase in the iron dose showed positive contribution to 2-CP oxidation, under the operating conditions of the current study (H2O2 at 20% of the stoichiometric dose and 20 °C), there was no effect on the mineralization rate, and TOC and chlorine balances were far to be closed, depicting the presence of chlorinated organic byproducts in the reaction medium. After 4 h of treatment, the total PCDD/Fs concentrations increased by 14.5-39 times related to the untreated sample when the iron doses tested decreased from 0.36 to 0.09 mM, with preferential formation of PCDFs over PCDDs and dominance of lower chlorinated congeners such as tetra and penta-PCDD/Fs. The treatment with the highest iron dose (0.36 mM) exhibited the lowest PCDD/Fs yields and was thus most successful at mitigating toxic byproducts of the Fenton oxidation, leading to lower sample toxic equivalence (TEQ) value.
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Affiliation(s)
- Marta Vallejo
- Departamento de Ingenierías Química y Biomolecular, ETSIIyT, Universidad de Cantabria, Avda. de los Castros, 39005 Santander, Spain
| | - Pablo Fernández-Castro
- Departamento de Ingenierías Química y Biomolecular, ETSIIyT, Universidad de Cantabria, Avda. de los Castros, 39005 Santander, Spain
| | - M Fresnedo San Román
- Departamento de Ingenierías Química y Biomolecular, ETSIIyT, Universidad de Cantabria, Avda. de los Castros, 39005 Santander, Spain
| | - Inmaculada Ortiz
- Departamento de Ingenierías Química y Biomolecular, ETSIIyT, Universidad de Cantabria, Avda. de los Castros, 39005 Santander, Spain.
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Lindholm-Lehto PC, Knuutinen JS, Ahkola HSJ, Herve SH. Refractory organic pollutants and toxicity in pulp and paper mill wastewaters. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:6473-99. [PMID: 25647495 DOI: 10.1007/s11356-015-4163-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 01/21/2015] [Indexed: 05/24/2023]
Abstract
This review describes medium and high molecular weight organic material found in wastewaters from pulp and paper industry. The aim is to review the versatile pollutants and the analysis methods for their determination. Among other pollutants, biocides, extractives, and lignin-derived compounds are major contributors to harmful effects, such as toxicity, of industrial wastewaters. Toxicity of wastewaters from pulp and paper mills is briefly evaluated including the methods for toxicity analyses. Traditionally, wastewater purification includes mechanical treatment followed by chemical and/or biological treatment processes. A variety of methods are available for the purification of industrial wastewaters, including aerobic and anaerobic processes. However, some fractions of organic material, such as lignin and its derivatives, are difficult to degrade. Therefore, novel chemical methods, including electrochemical and oxidation processes, have been developed for separate use or in combination with biological treatment processes.
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Affiliation(s)
- Petra C Lindholm-Lehto
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland,
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Jiao L, Wang X, Bing S, Xue Z, Li H. QSPR study on the photolysis half-life of PCDD/Fs adsorbed on spruce (Picea abies (L.) Karst.) needle surfaces under sunlight irradiation by using a molecular distance-edge vector index. RSC Adv 2015. [DOI: 10.1039/c4ra14178d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
QSPR study on the photolysis half-life of PCDD/Fs adsorbed to spruce (Picea abies (L.) Karst.) needle surfaces under sunlight irradiation.
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Affiliation(s)
- Long Jiao
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- P. R. China
- College of Chemistry and Materials Science
| | - Xiaofei Wang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- P. R. China
| | - Shan Bing
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- P. R. China
| | - Zhiwei Xue
- No. 203 Research Institute of Nuclear Industry
- Xian yang 712000
- P. R. China
| | - Hua Li
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
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