Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 3, Issue 4, Pages 2331-2341Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2015.08.022
Keywords
Chitosan; Polyvinyl alcohol; Polyethylene glycol; Phosphate; Adsorption
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In the present study, removal of phosphate ions using polyethylene glycol/chitosan and polyvinyl alcohol/chitosan composites was investigated. The polyethylene glycol/chitosan and polyvinyl alcohol/chitosan composites were found to be effective for the removal of phosphate anions. The prepared adsorbents were characterized by scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX), Fourier transform infra-red (FTIR) and X-ray diffraction (XRD). The removal of phosphate has been found to be dependent on contact time and pH. Adsorption isotherm studies indicated that polymer composites satisfy Langmuir and Freundlich models. The rate of reaction follows pseudo-second-order kinetics. The results of the study indicated that polyethylene glycol/chitosan and polyvinyl alcohol/chitosan composites are useful materials for the removal of phosphate from aqueous solution. (C) 2015 Elsevier Ltd. All rights reserved.
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