Removal of toxic metal (chromium) by using low-cost adsorbent in the leather processing area hazaribagh, Dhaka, Bangladesh

Waste containing toxic elements has been found in the project area Hazaribagh in Dhaka. This paper aims to explain & mention the various types of toxic elements & their intensity in the study area. Pollution of living environment with inorganic and organic metallic species is one of the serious problems in the world. (Pollutants cycles in the environment (Environmental Chemistry, UNEP, 3rd edition, (1979), Pollution of the living environment with inorganic heavy metals is one of the serious concerns because of its non-degradable character. (World leather vol 13, no 7, November 2000) With the progress of Science and Technology today it is possible to detect and quantify heavy metals and metalloids in different matrices and explain their movements through various environmental compartments and trace their pathways. Through these routes, the toxic metals such as As, Pb, Cd, Hg, Cr etc. are incorporated into drinking water and various food chains through bio geochemical cycling. (HMSO, London, 1987) By using low-cost adsorbent, it is possible that near about 89% chromium can be removed.