Novel chitosan/polyvinyl alcohol/talc composite for adsorption of heavy metals and dyes from aqueous solution

Kalantari, Katayoon and Afifi, Amalina Muhammad (2018) Novel chitosan/polyvinyl alcohol/talc composite for adsorption of heavy metals and dyes from aqueous solution. Separation Science and Technology, 53 (16). pp. 2527-2535. ISSN 0149-6395

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Official URL: https://doi.org/10.1080/01496395.2018.1462388

Abstract

In this study, adsorption capability of chitosan/polyvinyl alcohol/talc composite (CPTC) in removal of Congo red, Methyl orange, Pb2+, and Cr6+ was evaluated. CPTC was characterized using Fourier transfer infrared spectroscopy, field emission scanning electron microscope, X-ray diffraction, thermogravimetric analysis, and weight loss test. Flocculation was the main phenomena in Congo red removal for 100 mg/L and in Methyl orange for <100 mg/L. The removal amounts of Pb2+ and Cr6+ were 96% and close to 100% up to 200 mg/L, and 88% and 92% at 400 mg/L, respectively. Langmuir model demonstrated better results in describing the heavy metals removal. Moreover, it was found that kinetics followed a pseudo-second-order equation.

Item Type: Article
Uncontrolled Keywords: Chitosan; PVA; talc; heavy metals; dyes; adsorption
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 31 Jul 2019 02:09
Last Modified: 31 Jul 2019 02:09
URI: http://eprints.um.edu.my/id/eprint/21713

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