Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 157, Issue -, Pages 648-658Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.11.218
Keywords
Calcium chloride; Chitosan; Polyethyleneimine
Funding
- Ministry of Education - Higher Education(MOE), Malaysia [203/PJJAUH/6711445]
- Universiti Sains Malaysia (USM)
- MOE
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Chitosan-polyethyleneimine with calcium chloride as ionic cross-linker (CsPC) was synthesized as a new kind of adsorbent using a simple, green and cost-effective technique. The adsorption properties of the adsorbent for Acid Red 88 (AR88) dye, as a model analyte, were investigated in a batch system as the function of solution pH (pH 3-12), initial AR88 concentration (50-500 mg L-1), contact time (0-24 h), and temperature (30-50 degrees C.). Results showed that the adsorption process obeyed the pseudo-first order kinetic model and the adsorption rate was governed by both intra-particle and liquid-film mechanism. Equilibrium data were well correlated with the Freundlich isotherm model, with the calculated maximum adsorption capacity (q(m)) of 1000 mg g(-1) at 30 T. The findings underlined CsPC to be an effective and efficient adsorbent, which can be easily synthesized via one-step process with promising prospects for the removal of AR88 or any other similar dyes from the aqueous solutions. (C) 2019 Elsevier B.V. All rights reserved.
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