Ecology, Environment and Conservation Paper

Vol 28, Jan Suppl. Issue, 2022; Page No.(222-226)

STUDY OF FACTORS AFFECTING CHROMIUM ADSORPTION BY DIFFERENT SAW DUSTS

Anoop Kumar Mishra and Siddhartha Shukla

Abstract

In nature chromium exists in two forms viz., tri and hexavalent. Cr (VI) is highly recalcitrant and carcinogenic. It is frequently and extensively being used in variety of industries particularly Leather, Electroplating and Mining. Its removal is immensely required. Present investigation was an attempt to find out the optimum conditions for the removal of chromium by saw dusts as a result of adsorption. Study revealed that Teak (Tecton agrandis) is the best adsorbent of chromium followed by Sakhu (Shorea robusta), Eucalyptus (Eucalyptus globules), Sheesham (Dalbergia sisso), Neem (Azadirachta indica) and Mango (Mangifera indica). The conditions at which there was maximum adsorption was pH 6, temperature 27 oC, 50 g adsorbent concentration and 50 ppm adsorbate concentration with 20-minute retention time