D. B. Jirekar1, Mazahar Farooqui2*, Shirsh S. Pingale3
1Department of Chemistry, Anandrao Dhonde Alias Babaji College, Kada, Maharashtra, India, Affiliated to Dr B A M University Aurangabad.
2Dr. Rafiq Zakaria College for Women, Aurangabad, Affiliated to Dr B A M University Aurangabad, Maharashtra, India.
3Department of Chemistry, Gramonnati Mandal’s Arts, Com. and Sci. College, Affiliated to University of Pune, Narayangaon, Pune-410504, India
The use of Pisum sativum seed husk as low-cost adsorbents was investigated for the replacement for currently costly methods of adsorption Cr(VI) ions from aqueous solutions. Batch adsorption studies showed that Pisum sativum seed husk was able to adsorb Cr(VI) ions from aqueous solution. The effect of contact time, effect of initial concentration, effect of adsorbent dose, etc. have been reported. Equilibrium data were analyzed using the Langmuir Freundlich isotherms whereas the adsorption kinetic data were evaluated by the pseudo-first-order and pseudo-second-order kinetic models. The results obtained indicate that the adsorption of Cr(VI) on Pisum sativum seed husk is maximum at 20 mg/L metal ion concentration and 1.0 gm. adsorbent dose. The results demonstrated that Pisum sativum seed husk have potential to be employed as the adsorbent for the adsorption of Cr (VI) metal ions from aqueous solution.
Keywords: Chromium, Pisum sativum seed husk, adsorption, isotherm, aqueous solution, kinetics, thermo- dynamic parameters.