Adsorption of malachite green from waste water using prosopis juliflora bark carbon
Keywords:Adsorption, kinetics, malachite green, PJBC, thermodynamic.
Adsorption behavior of malachite green from waste water using prosopis juliflorabark carbon was investigated. The effect of contact time, adsorbent dose, solution pH,initial concentration of malachite green and temperature are investigated. Freundlichand Langmuir isotherms are used to determine the adsorption capacity of prosopisjuliflora bark carbon as an adsorbent. The entropy change (ΔS0) values and enthalpychange (ΔH0) values are calculated from the slope and intercept of the linear plotof lnK0 versus 1/T. The free energy change (ΔG0) is calculated from the equilibriumconstant (K0) value. The equilibrium constant (K0) for the adsorption process isdetermined from the slope of the plot of ln(qe/ce) against ce. The experimental valuesof entropy, enthalpy and free energy indicate that the adsorption of malachite green isa physical adsorption. The kinetic studies of malachite green follows pseudo secondorder and intra-particle diffusion model.
Freundlich, H. 1906. Per dye adsorption in losungen (adsorption in solution), Journal of physical
chemistry and chemical physics. 57: 384-470.
Hameed, B. H. 2009a. A novel agricultural waste adsorbent for the removal of cationic dye from aqueous
solution, Journal of Hazardous Materials. 162: 305-311.
Hameed, B. H. 2009b. Removal of cationic dye from aqueous solution using jackfruit peel as nonconventional
low-cost adsorbent, Journal of Hazardous Materials. 162: 344-350.
Ho, Y. S. & McKay, G. 2000. The kinetic of sorption of divalent metal ions onto sphagnum moss peat,
Water Research. 34: 735-742.
Ho, Y. S. & McKay, G. 1998. Sorption of dye from aqueous solution by peat, Chemical Engineering
Journal. 70: 15-124.
Khan, A. A. & Singh, R. P. 1987. Adsorption thermodynamics of carbofuran on Sn (IV) arsenosilicate in
H+, Na+ and Ca2+ forms, Colloids and Surfaces. 24: 33-42.
Langmuir, I. 1918. The adsorption of gases on plane surfaces of glass mica and platinum, Journal of
American Chemical Society. 57: 1361-1403.
Malik, R., Ramteke, D. S. & Wate, S. R. 2007. Adsorption of malachite green on groundnut shell waste
based powdered activated carbon, Waste Management. 27: 1129–1138
McKay, C., Blair, H. S. & Gardner, J. R. 1982. Adsorption of dyes on Chitin.I. equilibrium studies.
Journal of Applied Polymer Science. i.27: 3043-3057.
Muhammad, J. I. & Muhammad, A. 2007. Adsorption of dyes from aqueous solutions on activated
charcoal, Journal of Hazardous Materials. B139: 57–66.
Ramakrishna, K. R. & Viraraghvan, T. 1997. Dye removal using low cost adsorbents, Water Science
and Technology. 36: 189–196.
Tamilarasan, R. & Kumar, M. 2014. Removal of Victoria Blue using Prosopis juliflora bark carbon:
Kinetics and Thermodynamic modeling Studies. Journal of Material and Environmental Science 5
Weber, W. J. & Morris J. C. 1964. Kinetics of adsorption on carbon from solutions. Journal of Sanitary
Engineering Division. 90: 79-107.