Separation of Hexavalent Chromium, Chemical Oxygen Demand and Sulfate from Artificial Wastewater for Biogenic Sulfide CorrosionJournal: Journal of Advances in Civil Engineering (Vol.1, No. 1)
Publication Date: 2015-11-17
Authors : P.M Suthar;
Page : 25-32
Keywords : PH 7; Hydraulic retention time; Biogenic sulfides; Artificial wastewater; Sulfate.;
The aim of this work is to judge the possibility of using culture in mixed retrieval of toxic and carcinogenic hexavalent chromium mesophilic sulfate-reducing bacteria (SRB). In order to treat it effectively hexavalent chromium containing wastewater and sulfate-reducing bacteria culture was embraced to 60 mg/L of hexavalent chromium and maintained through repeated sub-culturing to increase the sulfate-reducing bacteria growth and activity. Experiments in module biosorption were carried out in vials of glass serum by sulfate-reducing bacteria cultured, fulfilling 83.1% of hexavalent chromium , 77.9% sulfate, 86.7% chemical oxygen demand removals under the following optimized circumstances, pH 7, 7 days of hydraulic retention time, 37 ◦ C temperature and 50 mg/L hexavalent chromium initial concentration. Moreover experiments in sorption were conducted on artificial wastewater under conditions for optimal operational performance and resulted in 89.2% hexavalent chromium, 81.9% chemical oxygen demand and 95.3% sulfate reduction from wastewater simulated. This work results in contribution to a better comprehension of metal uptake by biogenic sulfides and would be beneficial in the potential biosorbents development that possess hexavalent chromium uptake for high capacities from environments in aqueous environments.
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