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Performance of electrochemical oxidation process for removal of di (2-ethylhexyl) phthalate.
Environ Sci Pollut Res Int. 2016 Jun; 23(12):12164-73.ES

Abstract

Di (2-ethylhexyl) phthalate (DEHP) is the most detected and concentrated plasticizer in environment and wastewaters, worldwide. In this study, different operating parameters such as current intensity, treatment time, type of anodes, and supporting electrolytes were tested to optimized the electro-oxidation process (EOP) for the removal of DEHP in the presence of methanol as a dissolved organic matter. Among the anodes, the Nb/BDD showed the best degradation rate of DEHP, at low current intensity of 0.2 A after 90 min of treatment time with a percentage of degradation recorded of 81 %, compared to 70 % obtained with the Ti/IrO2-RuO2. Furthermore, due to the combination of direct and indirect oxidation, the removal of DEHP in the presence of 1 g/L Na2SO4 was higher than NaBr, even though the oxidant production of NaBr was 11.7 mmol/L against 3.5 mmol/L recorded in the presence of sulfate at 0.5 A and after 60 min of electrolysis time. Under optimal condition (current intensity = 0.5 A, time = 120 min, using Nb/BDD anode and Na2SO4 as supporting electrolyte), the removal of 87.2 % of DEHP was achieved. The total cost of 0.106 US$/m(3) of treated water was achieved based on economical optimization of reactor with current intensity of 0.2 A and 1 g/L Na2SO4.

Authors+Show Affiliations

Instituto de Ingeniería, Universidad Nacional Autónoma de México, Cd. Universitaria, 04510, México City, D.F., México.Institut national de la recherche scientifique (INRS-Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1K 9A9, Canada. patrick.drogui@ete.inrs.ca.Institut national de la recherche scientifique (INRS-Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1K 9A9, Canada.Institut national de la recherche scientifique (INRS-Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1K 9A9, Canada.Instituto de Ingeniería, Universidad Nacional Autónoma de México, Cd. Universitaria, 04510, México City, D.F., México.Departamento de Biotecnología y Ciencias Alimentarias, Dirección de Recursos Naturales, Instituto Tecnológico de Sonora, Ciudad Obregón, Sonora, México.Industrial research center of Quebec, 333 rue Franquet, Québec, QC, G1P 4C7, Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26971515

Citation

Espinoza, Josué Daniel García, et al. "Performance of Electrochemical Oxidation Process for Removal of Di (2-ethylhexyl) Phthalate." Environmental Science and Pollution Research International, vol. 23, no. 12, 2016, pp. 12164-73.
Espinoza JD, Drogui P, Zolfaghari M, et al. Performance of electrochemical oxidation process for removal of di (2-ethylhexyl) phthalate. Environ Sci Pollut Res Int. 2016;23(12):12164-73.
Espinoza, J. D., Drogui, P., Zolfaghari, M., Dirany, A., Ledesma, M. T., Gortáres-Moroyoqui, P., & Buelna, G. (2016). Performance of electrochemical oxidation process for removal of di (2-ethylhexyl) phthalate. Environmental Science and Pollution Research International, 23(12), 12164-73. https://doi.org/10.1007/s11356-016-6304-2
Espinoza JD, et al. Performance of Electrochemical Oxidation Process for Removal of Di (2-ethylhexyl) Phthalate. Environ Sci Pollut Res Int. 2016;23(12):12164-73. PubMed PMID: 26971515.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Performance of electrochemical oxidation process for removal of di (2-ethylhexyl) phthalate. AU - Espinoza,Josué Daniel García, AU - Drogui,Patrick, AU - Zolfaghari,Mehdi, AU - Dirany,Ahmad, AU - Ledesma,Maria Teresa Orta, AU - Gortáres-Moroyoqui,Pablo, AU - Buelna,Gerardo, Y1 - 2016/03/14/ PY - 2015/07/30/received PY - 2016/02/15/accepted PY - 2016/3/15/entrez PY - 2016/3/15/pubmed PY - 2017/3/18/medline KW - Di (2-ethylhexyl) phthalate (DEHP) KW - Direct oxidation KW - Electro-oxidation process (EOP) KW - Indirect oxidation KW - Removal efficiency SP - 12164 EP - 73 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 23 IS - 12 N2 - Di (2-ethylhexyl) phthalate (DEHP) is the most detected and concentrated plasticizer in environment and wastewaters, worldwide. In this study, different operating parameters such as current intensity, treatment time, type of anodes, and supporting electrolytes were tested to optimized the electro-oxidation process (EOP) for the removal of DEHP in the presence of methanol as a dissolved organic matter. Among the anodes, the Nb/BDD showed the best degradation rate of DEHP, at low current intensity of 0.2 A after 90 min of treatment time with a percentage of degradation recorded of 81 %, compared to 70 % obtained with the Ti/IrO2-RuO2. Furthermore, due to the combination of direct and indirect oxidation, the removal of DEHP in the presence of 1 g/L Na2SO4 was higher than NaBr, even though the oxidant production of NaBr was 11.7 mmol/L against 3.5 mmol/L recorded in the presence of sulfate at 0.5 A and after 60 min of electrolysis time. Under optimal condition (current intensity = 0.5 A, time = 120 min, using Nb/BDD anode and Na2SO4 as supporting electrolyte), the removal of 87.2 % of DEHP was achieved. The total cost of 0.106 US$/m(3) of treated water was achieved based on economical optimization of reactor with current intensity of 0.2 A and 1 g/L Na2SO4. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26971515/Performance_of_electrochemical_oxidation_process_for_removal_of_di__2_ethylhexyl__phthalate_ L2 - https://dx.doi.org/10.1007/s11356-016-6304-2 DB - PRIME DP - Unbound Medicine ER -