UTILIZATION OF TEA WASTE FOR THE REMOVAL OF ARSENIC (III) FROM AQUEOUS SOLUTION

M. S. SHAIKH, K. QURESHI, I. BHATTI

Abstract


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 0C, 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.


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