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Removal of Acid Orange 7 from water by electrochemically generated Fenton's reagent.
J Hazard Mater. 2009 Apr 30; 163(2-3):1213-20.JH

Abstract

The removal of azo dye Acid Orange 7 (AO7) from water was investigated by the electro-Fenton technology using electrogenerated hydroxyl radicals (OH) which leads to the oxidative degradation of AO7 up to its complete mineralization. H(2)O(2) and Fe (II) ions are electrogenerated in a catalytic way at the carbon-felt cathode. AO7 decay kinetics and evolution of its oxidation intermediates were monitored by high-performance liquid chromatography. The absolute rate constant of AO7 hydroxylation reaction has been determined as (1.20+/-0.17)x10(10)M(-1)s(-1). The optimal current value for the degradation of AO7 was found as 300 mA. AO7 degradation rate was found to decrease by increase in Fe(3+) concentration beyond 0.1mM. Mineralization of AO7 aqueous solutions was followed by total organic carbon (TOC) measurements and found to be 92%. Based on TOC evolution and identification of aromatic intermediates, short-chain carboxylic acids and inorganic ions released during treatment, a plausible mineralization pathway was proposed.

Authors+Show Affiliations

Anadolu University, Faculty of Science, Department of Chemistry, 26470 Eskişehir, Turkey. aozcan3@anadolu.edu.trNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18804327

Citation

Ozcan, Ali, et al. "Removal of Acid Orange 7 From Water By Electrochemically Generated Fenton's Reagent." Journal of Hazardous Materials, vol. 163, no. 2-3, 2009, pp. 1213-20.
Ozcan A, Oturan MA, Oturan N, et al. Removal of Acid Orange 7 from water by electrochemically generated Fenton's reagent. J Hazard Mater. 2009;163(2-3):1213-20.
Ozcan, A., Oturan, M. A., Oturan, N., & Sahin, Y. (2009). Removal of Acid Orange 7 from water by electrochemically generated Fenton's reagent. Journal of Hazardous Materials, 163(2-3), 1213-20. https://doi.org/10.1016/j.jhazmat.2008.07.088
Ozcan A, et al. Removal of Acid Orange 7 From Water By Electrochemically Generated Fenton's Reagent. J Hazard Mater. 2009 Apr 30;163(2-3):1213-20. PubMed PMID: 18804327.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Acid Orange 7 from water by electrochemically generated Fenton's reagent. AU - Ozcan,Ali, AU - Oturan,Mehmet A, AU - Oturan,Nihal, AU - Sahin,Yücel, Y1 - 2008/07/26/ PY - 2008/05/20/received PY - 2008/07/19/revised PY - 2008/07/21/accepted PY - 2008/9/23/pubmed PY - 2009/4/14/medline PY - 2008/9/23/entrez SP - 1213 EP - 20 JF - Journal of hazardous materials JO - J Hazard Mater VL - 163 IS - 2-3 N2 - The removal of azo dye Acid Orange 7 (AO7) from water was investigated by the electro-Fenton technology using electrogenerated hydroxyl radicals (OH) which leads to the oxidative degradation of AO7 up to its complete mineralization. H(2)O(2) and Fe (II) ions are electrogenerated in a catalytic way at the carbon-felt cathode. AO7 decay kinetics and evolution of its oxidation intermediates were monitored by high-performance liquid chromatography. The absolute rate constant of AO7 hydroxylation reaction has been determined as (1.20+/-0.17)x10(10)M(-1)s(-1). The optimal current value for the degradation of AO7 was found as 300 mA. AO7 degradation rate was found to decrease by increase in Fe(3+) concentration beyond 0.1mM. Mineralization of AO7 aqueous solutions was followed by total organic carbon (TOC) measurements and found to be 92%. Based on TOC evolution and identification of aromatic intermediates, short-chain carboxylic acids and inorganic ions released during treatment, a plausible mineralization pathway was proposed. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/18804327/Removal_of_Acid_Orange_7_from_water_by_electrochemically_generated_Fenton's_reagent_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01119-9 DB - PRIME DP - Unbound Medicine ER -