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
How to Cite
MetricsAbstract Views: 311
PDF Downloads: 193
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.