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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Investigation on Cu(II) adsorption on cobalt silicate precipitation tube (CSPT) in aqueous medium
K Parmar1, D Chongder, N R Bandyopadhya
1National Metallurgical Laboratory, Council of Scientific and Industrial Research, Jamshedpur 831007, India.
Abstract:
Cu(II) adsorption on cobalt silicate precipitation tube (CSPT) in aqueous medium has been reported. These tubes are porous with negative surface sites having isoelectric point (IEP) at pH 4.4. Cu(II) adsorption data follow Langmuir isotherm. CSPT has high Cu(II) loading capacity, which is a function of both Cu(II) concentration and CSPT weight. Adsorption bond energy obtained from Langmuir isotherm suggests a physisorption process. The adsorption process is endothermic and spontaneous. Adsorption kinetics follows pseudo second order model with activation energy (15.4 kJ mol(-1)) typical for physisorption process.
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