Title: Arsenic(III) removal by adsorption on sawdust carbon

Authors: P.B. Nagarnaik, A.G. Bhole, G.S. Natarajan

Addresses: B.N. College of Engineering Pusad, (R) 11, Engico Housing Society, Gandhinagar, Pusad 445204 (MS), India. ' 229 Bahar Apartment, Hill Road, Shivaji Nagar, Nagpur 10 (MS), India. ' Director, Laxminarayan Institute of Technology, Nagpur 10 (MS), India '

Abstract: Studies on the removal of As(III) by adsorption on sawdust and sawdust carbon have been carried out at room temperature (25 ± 1°C). The adsorption isotherm of As(III) on sawdust carbon was obtained in a batch reactor. The process of uptake follows the first-order adsorption rate expression and obeys the Langmuir and Freundlich model of adsorption. The mass transfer coefficients as a function of initial sorbate concentration have been determined. Parameters such as pH and absorbent dose were studied. Maximum adsorption capacity was observed at pH 7.0.

Keywords: adsorption; As(III) removal; mass transfer coefficient; sawdust carbon.

DOI: 10.1504/IJEP.2003.003747

International Journal of Environment and Pollution, 2003 Vol.19 No.2, pp.177 - 187

Available online: 22 Dec 2003 *

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