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Electrochemical degradation of the dimethyl phthalate ester on a fluoride-doped Ti/β-PbO2 anode.
Chemosphere. 2014 Aug; 109:187-94.C

Abstract

The electrooxidation of the dimethyl phthalate (DMP) ester was galvanostatically carried out in a filter-press reactor using a fluoride-doped lead dioxide (β-PbO2,F) film electrodeposited on a Ti substrate. The variables investigated were the nature of the supporting electrolyte (NaCl and Na2SO4), pH (3, 7, and 10), current density (10, 20, 40, 60, and 80mAcm(-2)), and temperature (10, 20, 30, 40, and 50°C). The removal of DMP was monitored through high performance liquid chromatography (HPLC) and total organic carbon (TOC) analysis. The best conditions were obtained using Na2SO4 and at low current densities, independent of the solution pH or temperature. These conditions led to the highest levels of current efficiencies and complete combustion. However, the TOC removal levels were low, due to the generation of highly oxidized intermediates, which was confirmed by the intermediates detected by HPLC.

Authors+Show Affiliations

São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP 13560-970 São Carlos, SP, Brazil.São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP 13560-970 São Carlos, SP, Brazil.Department of Chemistry, University Federal of São Carlos, P.O. Box 676, CEP 13560-970 São Carlos, SP, Brazil.São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP 13560-970 São Carlos, SP, Brazil.Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla - La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain.São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP 13560-970 São Carlos, SP, Brazil. Electronic address: artur@iqsc.usp.br.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24613504

Citation

Souza, Fernanda L., et al. "Electrochemical Degradation of the Dimethyl Phthalate Ester On a Fluoride-doped Ti/β-PbO2 Anode." Chemosphere, vol. 109, 2014, pp. 187-94.
Souza FL, Aquino JM, Irikura K, et al. Electrochemical degradation of the dimethyl phthalate ester on a fluoride-doped Ti/β-PbO2 anode. Chemosphere. 2014;109:187-94.
Souza, F. L., Aquino, J. M., Irikura, K., Miwa, D. W., Rodrigo, M. A., & Motheo, A. J. (2014). Electrochemical degradation of the dimethyl phthalate ester on a fluoride-doped Ti/β-PbO2 anode. Chemosphere, 109, 187-94. https://doi.org/10.1016/j.chemosphere.2014.02.018
Souza FL, et al. Electrochemical Degradation of the Dimethyl Phthalate Ester On a Fluoride-doped Ti/β-PbO2 Anode. Chemosphere. 2014;109:187-94. PubMed PMID: 24613504.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical degradation of the dimethyl phthalate ester on a fluoride-doped Ti/β-PbO2 anode. AU - Souza,Fernanda L, AU - Aquino,José M, AU - Irikura,Kallyni, AU - Miwa,Douglas W, AU - Rodrigo,Manuel A, AU - Motheo,Artur J, Y1 - 2014/03/07/ PY - 2013/12/11/received PY - 2014/02/08/revised PY - 2014/02/10/accepted PY - 2014/3/12/entrez PY - 2014/3/13/pubmed PY - 2014/9/17/medline KW - Degradation pathway KW - Electrochemical oxidation KW - Lead dioxide KW - Phthalic acid ester KW - Recalcitrant intermediates SP - 187 EP - 94 JF - Chemosphere JO - Chemosphere VL - 109 N2 - The electrooxidation of the dimethyl phthalate (DMP) ester was galvanostatically carried out in a filter-press reactor using a fluoride-doped lead dioxide (β-PbO2,F) film electrodeposited on a Ti substrate. The variables investigated were the nature of the supporting electrolyte (NaCl and Na2SO4), pH (3, 7, and 10), current density (10, 20, 40, 60, and 80mAcm(-2)), and temperature (10, 20, 30, 40, and 50°C). The removal of DMP was monitored through high performance liquid chromatography (HPLC) and total organic carbon (TOC) analysis. The best conditions were obtained using Na2SO4 and at low current densities, independent of the solution pH or temperature. These conditions led to the highest levels of current efficiencies and complete combustion. However, the TOC removal levels were low, due to the generation of highly oxidized intermediates, which was confirmed by the intermediates detected by HPLC. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/24613504/Electrochemical_degradation_of_the_dimethyl_phthalate_ester_on_a_fluoride_doped_Ti/β_PbO2_anode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(14)00220-3 DB - PRIME DP - Unbound Medicine ER -