Indian Journal of Science and Technology
Year: 2010, Volume: 3, Issue: 3, Pages: 290-292
C. Parvathi1 , T. Maruthavanan2 , S. Sivamani3 , C. Prakash4 and C.V.Koushik4*
1 Dept. of Chemistry, VSA School of Engineering, VSA Group of Institutions, Uthamasolapuram, Salem-636 010,India.
2 Dept. of Chemistry, Sona starch, Sona College of Technology, Salem 636 005, India
3 Dept. of Biotechnology, VMKV Engineering College, Salem 636 005, India
4 Dept. of Fashion Technology, Sona College of Technology, Salem 636 005, India
A carbon sorbent derived from an agricultural waste, tapioca peel was applied to study the removal of a reactive dye, Red Brown C4R from aqueous solution. Batch experiments were performed as a function of process parameters like agitation time, initial dye concentration and carbon dose. Modified Ritchie second order equation better predicted the kinetic results compared to other rate equations (pseudo first order & pseudo second order) tested. Among the isotherm models applied to the equilibrium data Freundlich model better predicted the experimental values. The adsorption capacity was 121.47 mg g−1 at an initial pH of 6 and at 32±0.5°C. The adsorption capacity increased with increase in temperature. The influence of pH on dye removal was not significant. An optimum carbon dose of 1.2 g L−1 was required for the maximum removal (96%) of dye from its 60 mg L−1 solution.
Keywords: Adsorption, Red Brown C4R, tapioca peel, activated carbon, kinetics, isotherms
Subscribe now for latest articles and news.