• Pramod D. Jamdade
• Dr. Sanjay Ubale

In the present Paper, kinetics of acid activated kokum (Garcinia Indica) leaf powder was investigated as an adsorbent to remove orange II dye from aqueous solutions in batch mode experiment. The rate of adsorption was tested by pseudo first-order and second-order kinetics models. The pseudo second - order kinetics model was found to be the most suitable. The data of thermodynamic parameters indicated that adsorptive removal is spontaneous, endothermic and favorable with increase in disorder .The results indicated that Kokum leaf powder can be used as potential adsorbent for removal of azo dyes like orange II from aqueous solutions.

Kokum leaf powder, Orange II dye, adsorption, pseudo second order kinetics.

"Kinetic study of orange II removal from aqueous solution by kokum (Garcinia Indica) leaf powder", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.1432-1435, June-2019, Available :http://www.jetir.org/papers/JETIR2004191.pdf

"Kinetic study of orange II removal from aqueous solution by kokum (Garcinia Indica) leaf powder", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp1432-1435, June-2019, Available at : http://www.jetir.org/papers/JETIR2004191.pdf