Tags

Type your tag names separated by a space and hit enter

Electrochemical treatment of aqueous wastes containing pyrogallol by BDD-anodic oxidation.
J Environ Manage. 2009 Jan; 90(1):523-30.JE

Abstract

In this work, the electrochemical oxidation of pyrogallol (1,2,3-trihydroxybenzene) on boron-doped diamond anodes has been studied. The voltammetric results showed that pyrogallol oxidation takes place in the same potential region as that of phenol where the supporting electrolyte is stable. Synthetic wastewaters containing pyrogallol have been treated in a bench-scale electrolysis plant. This plant operates in a discontinuous mode by recirculating the waste continuously through a single-chamber electrochemical flow cell. The complete mineralization of pyrogallol and the electro-generated pollutants is obtained in the electrolytic device. HPLC analyses show the formation of carboxylic acids as the main intermediates. The efficiency of the electrochemical process was found to depend mainly on the pollutant concentration present in the waste and on the applied current density. The high efficiency of this technology can be explained in terms of the direct electro-oxidation at the BDD surface and the oxidation carried out by hydroxyl radicals and other electro-generated oxidants.

Authors+Show Affiliations

Institut Supérieur des Sciences Appliquées et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisia. nasr.bensalah@issatgb.rnu.tnNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18336990

Citation

Nasr, Bensalah, et al. "Electrochemical Treatment of Aqueous Wastes Containing Pyrogallol By BDD-anodic Oxidation." Journal of Environmental Management, vol. 90, no. 1, 2009, pp. 523-30.
Nasr B, Hsen T, Abdellatif G. Electrochemical treatment of aqueous wastes containing pyrogallol by BDD-anodic oxidation. J Environ Manage. 2009;90(1):523-30.
Nasr, B., Hsen, T., & Abdellatif, G. (2009). Electrochemical treatment of aqueous wastes containing pyrogallol by BDD-anodic oxidation. Journal of Environmental Management, 90(1), 523-30. https://doi.org/10.1016/j.jenvman.2007.12.007
Nasr B, Hsen T, Abdellatif G. Electrochemical Treatment of Aqueous Wastes Containing Pyrogallol By BDD-anodic Oxidation. J Environ Manage. 2009;90(1):523-30. PubMed PMID: 18336990.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical treatment of aqueous wastes containing pyrogallol by BDD-anodic oxidation. AU - Nasr,Bensalah, AU - Hsen,Trabelsi, AU - Abdellatif,Gadri, Y1 - 2008/03/11/ PY - 2007/02/14/received PY - 2007/11/08/revised PY - 2007/12/02/accepted PY - 2008/3/14/pubmed PY - 2009/2/27/medline PY - 2008/3/14/entrez SP - 523 EP - 30 JF - Journal of environmental management JO - J Environ Manage VL - 90 IS - 1 N2 - In this work, the electrochemical oxidation of pyrogallol (1,2,3-trihydroxybenzene) on boron-doped diamond anodes has been studied. The voltammetric results showed that pyrogallol oxidation takes place in the same potential region as that of phenol where the supporting electrolyte is stable. Synthetic wastewaters containing pyrogallol have been treated in a bench-scale electrolysis plant. This plant operates in a discontinuous mode by recirculating the waste continuously through a single-chamber electrochemical flow cell. The complete mineralization of pyrogallol and the electro-generated pollutants is obtained in the electrolytic device. HPLC analyses show the formation of carboxylic acids as the main intermediates. The efficiency of the electrochemical process was found to depend mainly on the pollutant concentration present in the waste and on the applied current density. The high efficiency of this technology can be explained in terms of the direct electro-oxidation at the BDD surface and the oxidation carried out by hydroxyl radicals and other electro-generated oxidants. SN - 0301-4797 UR - https://www.unboundmedicine.com/medline/citation/18336990/Electrochemical_treatment_of_aqueous_wastes_containing_pyrogallol_by_BDD_anodic_oxidation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-4797(07)00413-6 DB - PRIME DP - Unbound Medicine ER -