Pollution Research Paper

Vol. 36, Issue 2, 2017; Page No.(352-358 )

ADSORPTION CHARACTERSTICS OF FE2+ ON MIXED MICELLES OF SODIUM DODECYL BENZENE SULPHONATE USING MICELLAR ENHANCED ULTRAFILTRATION

C.S. NURA, A. CHATTREE AND R.P. SINGH

Abstract

Water is the most ubiquitous natural resource. To preserve these prodigious aquifers from contamination is a matter of utmost importance. In the present study, we studied the adsorption of Fe2+ by mixed micelles of Sodium dodecyl benzene sulphonate(SDBS) using Micellar enhanced ultrafiltration (MEUF). A polyether sulphone membrane disc of 10kDa MWCO was used to remove Fe2+ by mixed micelle of SDBS. The optimization of the system was carried out considering three operational parameters filtration time, feed Fe2+ ion concentration and shaking rate. The removal percentage of Fe(II) decreased on increasing feed Fe2+ concentration. However, on increasing the shaking rate and filtration time, the adsorption efficiency was increased. After 60 minutes SDBS+Triton X-100 and SDBS+Tween-80 achieved equilibrium and no further adsorption of Fe2+ was noticed. Equilibrium study was analysed by using three adsorption isotherms namely, Langmuir, Freundlich and Dubinin-Kaganer-Radhushkevick (DKR) Adsorption model. Langmuir model fitted well the adsorption data. DKR model revealed the energy measure of the system which suggests that the adsorbate-adsorbent interaction existed primarily via Physisorption. Thermodynamic and thermokinetic parameters ΔG°,ΔH° and ΔS°, EAct and pre-exponential factor A were evaluated. Negative value of Gibbs free energy and enthalpy suggests that the reaction is spontaneous and exothermic. Positive entropy mentions increased disorderness at the surface of mixed micelle.

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