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Electrochemical oxidation of tannic acid contaminated wastewater by RuO2/IrO2/TaO2-coated titanium and graphite anodes.
Environ Technol. 2010 Dec 14; 31(14):1613-22.ET

Abstract

The electrochemical oxidation of tannic acid contaminated wastewater by RuO2/IrO2/TaO2-coated titanium and graphite anodes has been investigated. The effect of the process variables, such as initial pH, current density, processing time, concentration of the electrolyte and anode materials, on the degradation of tannic acid was studied. During the various stages of electrolysis, parameters such as COD, chloride ion concentration and UV-Vis spectra were examined and discussed. The maximum chemical oxygen demand (COD) removal efficiency of 94% was achieved at pH 5, operated at the current density of 8.10 mA/cm2, electrolyte (NaCl) concentration of 0.1 M and at 60 min of electrolysis using graphite anodes. The experimental results showed that the electrochemical oxidation process could effectively reduce the COD from the tannic acid contaminated wastewater. An acidic pH showed the maximum reduction of COD compared with neutral and alkaline pH. Increase in current density, process time and electrolyte (NaCl) concentration with the increase in COD removal. Graphite anodes showed maximum removal of COD and better tannic acid degradation when compared with RuO2/IrO2/TaO2-coated titanium anodes.

Authors+Show Affiliations

Environmental Engineering and Technology Laboratory, Department of Environmental Sciences, Bharathiar University, Coimbatore - 641 046, India.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21275257

Citation

Govindaraj, M, et al. "Electrochemical Oxidation of Tannic Acid Contaminated Wastewater By RuO2/IrO2/TaO2-coated Titanium and Graphite Anodes." Environmental Technology, vol. 31, no. 14, 2010, pp. 1613-22.
Govindaraj M, Muthukumar M, Raju GB. Electrochemical oxidation of tannic acid contaminated wastewater by RuO2/IrO2/TaO2-coated titanium and graphite anodes. Environ Technol. 2010;31(14):1613-22.
Govindaraj, M., Muthukumar, M., & Raju, G. B. (2010). Electrochemical oxidation of tannic acid contaminated wastewater by RuO2/IrO2/TaO2-coated titanium and graphite anodes. Environmental Technology, 31(14), 1613-22. https://doi.org/10.1080/09593330.2010.482147
Govindaraj M, Muthukumar M, Raju GB. Electrochemical Oxidation of Tannic Acid Contaminated Wastewater By RuO2/IrO2/TaO2-coated Titanium and Graphite Anodes. Environ Technol. 2010 Dec 14;31(14):1613-22. PubMed PMID: 21275257.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical oxidation of tannic acid contaminated wastewater by RuO2/IrO2/TaO2-coated titanium and graphite anodes. AU - Govindaraj,M, AU - Muthukumar,M, AU - Raju,G Bhaskar, PY - 2011/2/1/entrez PY - 2011/2/1/pubmed PY - 2011/3/9/medline SP - 1613 EP - 22 JF - Environmental technology JO - Environ Technol VL - 31 IS - 14 N2 - The electrochemical oxidation of tannic acid contaminated wastewater by RuO2/IrO2/TaO2-coated titanium and graphite anodes has been investigated. The effect of the process variables, such as initial pH, current density, processing time, concentration of the electrolyte and anode materials, on the degradation of tannic acid was studied. During the various stages of electrolysis, parameters such as COD, chloride ion concentration and UV-Vis spectra were examined and discussed. The maximum chemical oxygen demand (COD) removal efficiency of 94% was achieved at pH 5, operated at the current density of 8.10 mA/cm2, electrolyte (NaCl) concentration of 0.1 M and at 60 min of electrolysis using graphite anodes. The experimental results showed that the electrochemical oxidation process could effectively reduce the COD from the tannic acid contaminated wastewater. An acidic pH showed the maximum reduction of COD compared with neutral and alkaline pH. Increase in current density, process time and electrolyte (NaCl) concentration with the increase in COD removal. Graphite anodes showed maximum removal of COD and better tannic acid degradation when compared with RuO2/IrO2/TaO2-coated titanium anodes. SN - 0959-3330 UR - https://www.unboundmedicine.com/medline/citation/21275257/Electrochemical_oxidation_of_tannic_acid_contaminated_wastewater_by_RuO2/IrO2/TaO2_coated_titanium_and_graphite_anodes_ L2 - https://www.tandfonline.com/doi/full/10.1080/09593330.2010.482147 DB - PRIME DP - Unbound Medicine ER -