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Rxsaonsx Surfztx ToKxling znK OatiTizztion of throTiuT (Vi) RxTovzl FroT zquxous Solution Using iorzsus Flzixllifxr toir aowKxr
D. TriPAna a, T. Piva TriPAna a and R. PadPa Prxx b
aDxpartPxnt of ZAxPiZal xnginxxring, P.V.G.R. Zollxgx of xnginxxring, VizianagaraP, India
bDxpartPxnt of ZAxPiZal xnginxxring, A.U. Zollgx of xngg (A), ViPaTAapatnaP, India
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Abstract:
The potential use of Borasus flabellifer coir powder for the removal of chromium (VI) from aqueous solution has been investigated in batch mode experiments. Percentage removal of chromium (VI) is found to be 97.6% at pH 2, amount of adsorbent dosage of 0.5 g in 50 mL solution and temperature of 303 K. Influences of parameters like initial chromium (VI) concentration (5-30 mg/L), pH (1-3), and biomass dosage (10-14 g/L) on chromium (VI) adsorption were examined using response surface methodology. The Box-Behnken experimental design in response surface methodology was used for designing the experiments as well as for full response surface estimation and 15 trials as per the model were run. The optimum conditions for maximum removal of chromium (VI) from an aqueous solution of 20 mg/L were as follows: adsorbent dosage (10.1869 g/L), pH 1.9 and initial chromium (VI) concentration (6.3244 mg/L). The high correlation coefficient (R2 =0.989) between the model and the experimental data showed that the model was able to predict the removal of chromium (VI) from aqueous solution using B. flabellifer coir powder efficiently.
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Keywords: Box-behnken design (BBD); borasus flabellifer coir powder; chromium (VI); adsorption.
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*Corresponding author; e-mail: d_krishna@rediffmail.com
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©
2013
CSME , ISSN 0257-9731
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