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Abstract: Contamination of drinking water due to arsenic is a severe problem with regards to health hazards. Most of the techniques developed are for pentavalent arsenate species and are not very effective for trivalent arsenite, which is also found in many places and has toxicity higher than arsenate. In the present work an attempt to remove arsenite by using activated alumina was made. Effect of adsorbent dose, solution pH, and time has been investigated. The arsenite removal was strongly dependent on pH, contact time and adsorbent dose. The results show that the activated alumina can be very effective adsorbent for arsenite and arsenate..
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