Removal of Arsenic (III) from Groundwater by Adsorption onto Duckweed (Lemna minor)
Tasrina R. Choudhury, T. Acher, M. N. Amin, S. B. Quraishi, A. I. Mustafa
International Research Journal of Pure and Applied Chemistry · pp. 120–127 · Published 26 Jan 2015
10.9734/IRJPAC/2015/12798Abstract
Duckweed used as adsorbent material for arsenic (III) removal from groundwater. The results of this study showed that adsorption of arsenic (III) by duckweed without any pretreatment. Various parameters are investigated that affect arsenic adsorption/desorption. Maximum arsenic (III) removal was obtained under the following conditions: initial As (III) concentration, 100 µg/L; Duck weed amount, 3 g; average particle size, 0.595 mm; treatment flow rate, 1.67 mL/min; and pH, 5.5, respectively. The desorption efficiencies with 1M H2SO4 was observed 97.67%. The present work meets the arsenic concentration required for drinking water recommended by Bangladesh and the World Health Organization (WHO) water quality criteria for drinking water.
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