• P.Pragna
• Dr.P.Reddy Prasad
• Dr.M.Srimurali*

The present work reported that adsorption of chromium (VI) from aqueous solution using wood charcoal (WC), treated wood charcoal (TWC) and also nanoparticles consisting of Iron oxide nanoparticles which were loaded on the treated wood charcoal (Fe3O4-TWC). The treated WC and Fe3O4-TWC was characterized by SEM and XRD techniques. Experimental data were exploited for equilibrium, kinetic and isothermal evaluations related to the adsorption processes. The Cr(VI) adsorption process was found to be favourable at pH 4.0 and it reached equilibrium time of 240 min for WC (15%), 100 min for TWC (82%) and 60 min (96%) for Fe3O4 –TWC. Kinetic studies show that the overall adsorption rate of Cr(VI) is illustrated well by Pseudo second order kinetics than the Pseudo first order kinetics. Isothermal studies were conducted at an initial chromium concentration in the range of 5.0 to 20.0 mg/L to assess its adsorption efficiency with respect to water. The equilibrium data were well fitted by Freundlich isotherm as R2=0.997.

Adsorption, Chromium, Nanoparticles and Wood Charcoal

"Adsorptive removal of hexavalent chromium by using wood charcoal and modified wood charcoal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.811-822, September-2018, Available :http://www.jetir.org/papers/JETIR1809629.pdf

"Adsorptive removal of hexavalent chromium by using wood charcoal and modified wood charcoal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp811-822, September-2018, Available at : http://www.jetir.org/papers/JETIR1809629.pdf