Edumy the potential of using low cost biosorbents in

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Unformatted text preview: lace within the first 60 minutes, regardless of its initial concentration. Different kinetic models were selected to interpret the experimental data. By applying the adsorption data into the best -fit kinetic model, the rate constant, the equilibrium sorption capacity and initial rate were calculated. From these parameters, the predictive models and experimental uptake of MB were compared and discussed. Maximum sorption capacity of each biosorbent under present experimental conditions was calculated based on Lan gmuir isotherm. ENV-P2 THE ENHANCEMENT OF COPPER AND NICKEL REMOVAL IN BIOLOGICAL TREATMENT PROCESS OF ELECTROPLATING WASTEWATER BY COMBINED USE OF SEQUENCING BATCH REACTOR (SBR) AND CHEMICAL PRECIPITATION METHODS 1 M.R. Allahgholi Ghasri, R. Marandi, R. M.A.Tehrani and S. Ab Ghani 2 1 3 Department of Chemistry, Islamic Azad University, Share Rey Branch, Tehran, Iran 2 Faculty of Chemistry, Islamic Azad University, North Tehran Branch, Iran 3 Pusat Pengajian Sains Kimia, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia E-mail: ghasri_mr@yahoo.com This study reported on the application of sequencing batch reactor ( SBR) and chemical precipitation methods in tandem for the enhancement of the biological treatment process of Cu(II) and Ni(II) remova l from electroplating wastewater. To remove Cu(II) and Ni(II) from electroplating wastewater the 1000 -1 mg L halide solutions of the metals were used. The treatment was performed under simultaneous mixing and aeration in the presence of the activated sludge, in Qeytarieh Treatment Plant (Tehran). The highest removal of metals was obtained at pH 8.0 ±0.3, sludge volume 30 % and dissolved oxygen -1 concentration 6 - 8 mg L . At these conditions the biological treatment was performed using SBRs at -1 various flow rates. The optimum flow rate was found at 40 mL min . Investigation on the real electroplating wastewater using SBRs has shown that the optimum conditions for metal removal -1 together with decrease in pollution loading were sludge volume 30 % a...
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