Carbon fiber embedded chitosan/PVA composites for decontamination of endocrine disruptor bisphenol-A from water

Simsek E. B., Saloglu D., Ozcan N., Novak I., Berek D.

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, vol.70, pp.291-301, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 70
  • Publication Date: 2017
  • Doi Number: 10.1016/j.jtice.2016.11.008
  • Journal Name: JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.291-301
  • Keywords: Carbon fiber, Chitosan, Composite, Bisphenol-A, Adsorption, Kinetics, SOLID-PHASE EXTRACTION, PHOTOCATALYTIC DEGRADATION, ACTIVATED CARBONS, AQUEOUS-SOLUTION, ADSORPTION, SORPTION, BIOSORPTION, ADSORBENTS, ELECTRODE, MODEL
  • Istanbul Technical University Affiliated: No

Abstract

Microporous carbon fibers (CFs) were in situ embedded in chitosan-polyvinyl alcohol (CHT-PVA) polymer matrix to produce an approximately 10 mm-thick carbon-polymer composite film (CHT-PVA/CF). The composite films were prepared with different CF:(CHT-PVA) ratios of 0.5-3.0 (w/w) and were used as novel adsorbents for the remediation of bisphenol A (BPA) from water. The composites were characterized by SEM, TGA-DTG, FTIR and XPS analysis. When CF was introduced into the matrix of CHT-PVA, the BPA removal performance increased from 5.8% to 97.6%. The adsorption performances of CHT-PVA/CF composites were investigated with respect to solution pH, temperature and time. The optimal pH for maximum adsorption was found as 6.0. The Freundlich and Dubinin-Raduskevich isotherm models were fitted to the equilibrium data better than the Langmuir model. According to the kinetics results, the equilibrium time of CHT-PVA/CF composite film was found 2 h and the kinetic data were well described by the pseudo-second-order equation. After saturated adsorption, composite film can be easily regenerated and reused within five cycles. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.