alexa Abstract | The Removal of Nickel from Waste Water by Modified Coconut Coir Pith
ISSN: 2150-3494

Chemical Sciences Journal
Open Access

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Research Article Open Access

Abstract

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.

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Author(s): Sheel Ratan, Indu Singh, Joy Sarkar and Naik RM*

Keywords

Adsorption, Nickel (II), Coconut coir pith, Isotherms,Kinetics, Thermodynamics, Chemical Sciences and Thermodynamics

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