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Sub-stoichiometric titanium oxide (Ti4O7) as a suitable ceramic anode for electrooxidation of organic pollutants: A case study of kinetics, mineralization and toxicity assessment of amoxicillin.
Water Res. 2016 Dec 01; 106:171-182.WR

Abstract

Electrochemical degradation of aqueous solutions containing antibiotic amoxicillin (AMX) has been extensively studied in an undivided electrolytic cell using a sub-stoichiometric titanium oxide (Ti4O7) anode, elaborated by plasma deposition. Oxidative degradation of AMX by hydroxyl radicals was assessed as a function of applied current and was found to follow pseudo-first order kinetics. The use of carbon-felt cathode enhanced oxidation capacity of the process due to the generation of H2O2. Comparative studies at low current intensity using dimensional stable anode (DSA) and Pt anodes led to the lower mineralization efficiencies compared to Ti4O7 anode: 36 and 41% TOC removal for DSA and Pt respectively compared to 69% for Ti4O7 anode. Besides, the use of boron doped diamond (BDD) anode under similar operating conditions allowed reaching higher mineralization (94%) efficiency. Although Ti4O7 anode provides a lesser mineralization rate compared to BDD, it exhibits better performance compared to the classical anodes Pt and DSA and can constitutes an alternative to BDD anode for a cost effective electro-oxidation process. Moreover several aromatic and aliphatic oxidation reaction intermediates and inorganic end-products were identified and a plausible mineralization pathway of AMX involving these intermediates was proposed.

Authors+Show Affiliations

Université Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454, Marne-la-Vallée, France.Université Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454, Marne-la-Vallée, France.SAINT-GOBAIN CREE, 550 Avenue Alphonse Jauffret, 84300, Cavaillon, France.IEM (Institut Européen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Université de Montpellier, Place E. Bataillon, F-34095, Montpellier, Cedex 5, France.IEM (Institut Européen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Université de Montpellier, Place E. Bataillon, F-34095, Montpellier, Cedex 5, France.Université Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454, Marne-la-Vallée, France.Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, FR, Italy.Université Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454, Marne-la-Vallée, France. Electronic address: Mehmet.oturan@univ-paris-est.fr.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27716467

Citation

Ganiyu, Soliu O., et al. "Sub-stoichiometric Titanium Oxide (Ti4O7) as a Suitable Ceramic Anode for Electrooxidation of Organic Pollutants: a Case Study of Kinetics, Mineralization and Toxicity Assessment of Amoxicillin." Water Research, vol. 106, 2016, pp. 171-182.
Ganiyu SO, Oturan N, Raffy S, et al. Sub-stoichiometric titanium oxide (Ti4O7) as a suitable ceramic anode for electrooxidation of organic pollutants: A case study of kinetics, mineralization and toxicity assessment of amoxicillin. Water Res. 2016;106:171-182.
Ganiyu, S. O., Oturan, N., Raffy, S., Cretin, M., Esmilaire, R., van Hullebusch, E., Esposito, G., & Oturan, M. A. (2016). Sub-stoichiometric titanium oxide (Ti4O7) as a suitable ceramic anode for electrooxidation of organic pollutants: A case study of kinetics, mineralization and toxicity assessment of amoxicillin. Water Research, 106, 171-182. https://doi.org/10.1016/j.watres.2016.09.056
Ganiyu SO, et al. Sub-stoichiometric Titanium Oxide (Ti4O7) as a Suitable Ceramic Anode for Electrooxidation of Organic Pollutants: a Case Study of Kinetics, Mineralization and Toxicity Assessment of Amoxicillin. Water Res. 2016 Dec 1;106:171-182. PubMed PMID: 27716467.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sub-stoichiometric titanium oxide (Ti4O7) as a suitable ceramic anode for electrooxidation of organic pollutants: A case study of kinetics, mineralization and toxicity assessment of amoxicillin. AU - Ganiyu,Soliu O, AU - Oturan,Nihal, AU - Raffy,Stéphane, AU - Cretin,Marc, AU - Esmilaire,Roseline, AU - van Hullebusch,Eric, AU - Esposito,Giovanni, AU - Oturan,Mehmet A, Y1 - 2016/09/28/ PY - 2016/07/21/received PY - 2016/09/25/revised PY - 2016/09/27/accepted PY - 2016/10/8/pubmed PY - 2017/5/5/medline PY - 2016/10/8/entrez KW - Amoxicillin KW - Electro-oxidation KW - Hydroxyl radicals KW - Mineralization KW - Plasma deposition KW - Ti(4)O(7) anode SP - 171 EP - 182 JF - Water research JO - Water Res VL - 106 N2 - Electrochemical degradation of aqueous solutions containing antibiotic amoxicillin (AMX) has been extensively studied in an undivided electrolytic cell using a sub-stoichiometric titanium oxide (Ti4O7) anode, elaborated by plasma deposition. Oxidative degradation of AMX by hydroxyl radicals was assessed as a function of applied current and was found to follow pseudo-first order kinetics. The use of carbon-felt cathode enhanced oxidation capacity of the process due to the generation of H2O2. Comparative studies at low current intensity using dimensional stable anode (DSA) and Pt anodes led to the lower mineralization efficiencies compared to Ti4O7 anode: 36 and 41% TOC removal for DSA and Pt respectively compared to 69% for Ti4O7 anode. Besides, the use of boron doped diamond (BDD) anode under similar operating conditions allowed reaching higher mineralization (94%) efficiency. Although Ti4O7 anode provides a lesser mineralization rate compared to BDD, it exhibits better performance compared to the classical anodes Pt and DSA and can constitutes an alternative to BDD anode for a cost effective electro-oxidation process. Moreover several aromatic and aliphatic oxidation reaction intermediates and inorganic end-products were identified and a plausible mineralization pathway of AMX involving these intermediates was proposed. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/27716467/Sub_stoichiometric_titanium_oxide__Ti4O7__as_a_suitable_ceramic_anode_for_electrooxidation_of_organic_pollutants:_A_case_study_of_kinetics_mineralization_and_toxicity_assessment_of_amoxicillin_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(16)30733-3 DB - PRIME DP - Unbound Medicine ER -