SINDH UNIVERSITY RESEARCH JOURNAL (SCIENCE SERIES)

Water contaminated with arsenic causes severe health hazard. Arsenic is found in the ground water of various provinces of Pakistan including Sindh and Punjab. Arsenic containing more than tolerable limits in ground water requires proper treatment before use. In the present study tea waste was used as adsorbents for removing arsenic from aqueous solution and found successful. Various parameters i-e shaking time, pH, shaking speed, temperature, adsorbent dose, adsorbate concentration were studied. The maximum sorption percentage 92.5 % of arsenic onto the tea waste was found at pH 7.0, shaking time 100 minutes, shaking speed 150 rpm, temperature 25 0 C, adsorbent dose 1.0 gm and adsorbate concentration 10 ppm. Tea waste showed good efficiency when compared to other various biosorbents already used for arsenic removal.