Study on the Removal of Thiosulfate from Wastewater by Catalytic Oxidation
Wastewater streaming from industrial plants, including petroleum refineries, chemical plants, pulp and paper plants, mining operations, electroplating operations, and food processing plants, can contain offensive substances such as cyanide, sulfides, sulfites, thiosulfates, mercaptans and disulfides that tend to increase the chemical oxygen demand (COD) of the streams. In the present work, removal of thiosulfate from wastewater by catalytic oxidation using aluminum oxide as a catalyst was studied. Four main factors were considered, namely the initial thiosulfate concentration, the hydrogen peroxide concentrations, the amount of the catalyst and the operating temperatures. The analysis of thiosulfate and sulfate was carried out by using UV Visible Spectrophotometer. An empirical rate equation was developed.
Keywords:thiosulfate oxidation, kinetic model, catalytic oxidation, wastewater treatment
R. H. Dinegar, R. H. Smellie, V. K. La Mer, “Kinetics of the acid decomposition of sodium thiosulfate in dilute solutions”, Journal of the American Chemical Society, Vol. 73, pp. 2050-2054, 1951 DOI: https://doi.org/10.1021/ja01149a043
T. Yan, Removal of Cyanide, Sulfides and Thiosulfate from Ammonia-Containing Wastewater by Catalytic Oxidation, US Patent, No. 5360552, 2001
DIONEX, Determination of Thiosulfate in Refinery and Other Wastewaters, Application Note 138, DIONEX, 2001
D. C. Schreiber, S. G. Pavlostathis, “Biological oxidation of thiosulfate in mixed heterotrophic/autotrophic cultures”, Water Research ,Vol. 32, No. 5, pp. 1363-1372, 1998 DOI: https://doi.org/10.1016/S0043-1354(97)00368-0
N. Ahmad, S. Maitra, B. K. Dutta, F. Ahmad, “Remediation of sulfidic wastewater by catalytic oxidation with hydrogen peroxide”, Journal of Environmental Sciences, Vol. 21, No. 12, pp. 1735-1740, 2009 DOI: https://doi.org/10.1016/S1001-0742(08)62481-X
N. Ahmad, F. Ahmad, I. Khan, A. Daud Khan, “Studies on the Oxidative Removal of Sodium Thiosulfate from Aqueous Solution”, Arabian Journal for Science and Engineering, Vol. 40, No. 2, pp. 289-293, 2015 DOI: https://doi.org/10.1007/s13369-014-1473-0
F. Ahmad, N. Ahmad, A. Z. Al-Khazaal, I. Alenezi, “Remediation of sulfidic wastewater by aeration in the presence of ultrasonic vibration”, Engineering, Technology & Applied Science Research, Vol. 8, No. 3, pp. 2919-2928, 2018 DOI: https://doi.org/10.48084/etasr.1956
F. Ahmad, “A new approach for the removal of thiosulfate from wastewater”, International Journal of Chemical and Enviromental Engineering, Vol. 3, No. 5, pp. 303-308, 2012
F. Ahmad, N. Ahmad, S. Maitra, “Treatment of Sulfidic Wastewater Using Iron Salts”, Arabian Journal for Science and Engineering, Vol. 42, No. 4, pp. 1455-1462, 2017 DOI: https://doi.org/10.1007/s13369-016-2315-z
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