Adsorption study of methyl orange by chitosan/polyvinyl alcohol/zeolite electrospun composite nanofibrous membrane

Habiba, Umma and Siddique, Tawsif A. and Lee, Jacky Jia Li and Tan, Chin Joo and Ang, Bee Chin and Afifi, Amalina Muhammad (2018) Adsorption study of methyl orange by chitosan/polyvinyl alcohol/zeolite electrospun composite nanofibrous membrane. Carbohydrate Polymers, 191. pp. 79-85. ISSN 0144-8617

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Official URL: https://doi.org/10.1016/j.carbpol.2018.02.081

Abstract

The chitosan/polyvinyl Alcohol/zeolite electrospun composite nanofibrous membrane was fabricated for adsorption of methyl orange. The EDX, TGA and tensile test were carried out for the characterization of the membrane. The Young's Modulus of the nanofibrous membranes increased by more than 100% with the addition of zeolite to chitosan/PVA. The batch adsorption tests were conducted by varying the initial concentration of methyl orange, contact time and pH of the dye solution. UV–vis results showed that most of the dye was adsorbed within 6 min. An adsorption kinetic study was carried out using the pseudo-second-order kinetic model, Lagergren-first-order model and intra particle diffusion model. The adsorption kinetics obeyed the Pseudo second order model. The adsorption mechanism was analyzed using the Langmuir and Freundlich isotherm model. The experimental data fits well with the Freundlich model. The adsorption capacity of the membrane was 153 mg/g. Adsorption capacity was decreased with increasing pH value. The resulting nanofiber became less active over methyl orange after several runs.

Item Type: Article
Uncontrolled Keywords: Adsorption; Chitosan; TGA; Tensile strength; Zeolite
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Aug 2019 07:10
Last Modified: 20 Aug 2019 07:10
URI: http://eprints.um.edu.my/id/eprint/21986

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