HEXAVALENT CHROMIUM REMOVAL FROM POLLUTED WATER USING NEWLY PREPARED ADSORBENT FROM BARK OF TAMARINDUS INDICA

Abstract

: Environment is deteriorating day to day due to the industrial pollution, toxic chemicals etc. which lead to the accumulation of contaminants inclusive of heavy metals in waste water. The water polluted by industrial effluents disturbs its normal use for agriculture and aquatic life. Due to the toxicity, non-biodegradability and persistent nature, removal of toxic heavy metals become an absolute necessity. Hexavalent chromium metal ion is one of the major pollutant in the environment which is frequently present in waste water released from various industrial units. In the recent research paper reports, the potential application of self prepared activated carbon derived from the bark of Tamarindusindicafor removal of hexavalent chromium from aqueous solution. The batch experiments were carried out to investigate the effect of significant process parameters such as pH, contact time, adsorbent dosage and initial Cr(VI) ion concentration. The maximum adsorption of Cr(VI) on bio-sorbent was found at pH 4.5. The removal of hexavalent chromium from aqueous solution increases with increase in contact time and adsorbents dose. The maximum removal capacity for Cr(VI) have been noticed to be 93.70%. This investigation verifies that the activated carbon derived from Tamarindusindica bark can be used as a valuable adsorbent material for removal of hexavalent chromium from contaminated water and may contribute in pollution control.