• Anju Singh

In an attempt to evaluate the suitability of non-conventional adsorbents such as activated carbon (AC), fly ash (FS), rice husk (RH) and saw dust (SD) for the removal of hexavalent chromium from wastewater, a comparative study was carried out using all these adsorbents. PAC, FA, SD and RH could remove 95.3, 77.6,88.4 and 87.3% Cr (VI) at initial metal concentration 10 mg/l, Ph 6.0, temperature 250C, agitation time 2 h and adsorbent dose 10 g/l. The order of metal removal capacities for these adsorbents was found to be: PAC> FA> SD> RH. The effect of various parameters affecting the adsorption such as initial metal concentration, adsorbent dose, contact time and pH was determined. Adsorption decreases with rise in metal concentration and pH but increases with increase in adsorbent dose and contact time. Equilibrium was attained in 1.5 h and the maximum removal was at pH 2. Thus, acidic medium favored the removal.

Bioadsorbents, heavy metal removal, contaminated water

"Removal of Cr (VI) from contaminated water using efficient bioadsorbents", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 1, page no.c606-c613, January-2022, Available :http://www.jetir.org/papers/JETIR2201277.pdf

"Removal of Cr (VI) from contaminated water using efficient bioadsorbents", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 1, page no. ppc606-c613, January-2022, Available at : http://www.jetir.org/papers/JETIR2201277.pdf