The Removal of Nickel from Waste Water by Modified Coconut Coir Pith
Sheel Ratan, Indu Singh, Joy Sarkar and Naik RM*
Department of Chemistry, University of Lucknow, Lucknow, Uttar Pradesh, India
- *Corresponding Author:
- Naik RM
Department of Chemistry
University of Lucknow
Lucknow, Uttar Pradesh-226 007, India
E-mail: [email protected]
Received date: June 13, 2016; Accepted date: July 18, 2016; Published date: July 25, 2016
Citation: Ratan S, Singh I, Sarkar J, Naik RM (2016) The Removal of Nickel from Waste Water by Modified Coconut Coir Pith. Chem Sci J 7:136. doi:10.4172/2150-3494.1000136
Copyright: © 2016 Ratan S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In this study, Coconut Coir Pith was used to prepare a low cost bio adsorbent through chemical modification. The effect of adsorbent dosage, contact time, initial metal-ion concentration, pH and temperature on the adsorption of nickel onto chemically modified coconut coir pith was investigated. The maximum removal was observed at pH 6.0 and adsorbent dose 2.0 g/L for initial metal-ions concentration 50 mg/L. Study of temperature effect proved that the process is endothermic. Langmuir and Freundlich isotherm models were used for equilibrium adsorption data. Langmuir isotherm proved to be a better fit. Pseudo first order and pseudo second order kinetic models were applied to analyze the kinetic mechanism of adsorption. The values of Gibbs free energy ΔG°, Enthalpy ΔH° and Entropy ΔS° was calculated by the thermodynamic studies.