One-step synthesis of chitosan-polyethyleneimine with calcium chloride as effective adsorbent for Acid Red 88 removal

Yusof NH 1 , Foo KY 2 , Hameed BH 3 , Hussin MH 4 , Lee HK 5 , Sabar S 6

Affiliations 

  • 1 Chemical Sciences Programme, School of Distance Education (SDE), Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
  • 2 River Engineering and Urban Drainage Research Centre (REDAC), Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
  • 3 Department of Chemical Engineering, College of Engineering, Qatar University, P.O. Box: 2713, Doha, Qatar
  • 4 Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
  • 5 Department of Chemistry, National University of Singapore, 3 Science Drive, 3, Singapore 117543, Singapore; National University of Singapore Environmental Research Institute, National University of Singapore, T-Lab Building #02-01 5A, Engineering Drive 1, Singapore 117411, Singapore; Tropical Marine Science Institute, National University of Singapore, S2S Building, 18 Kent Ridge Road, Singapore 119227, Singapore
  • 6 Chemical Sciences Programme, School of Distance Education (SDE), Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia; Department of Chemistry, National University of Singapore, 3 Science Drive, 3, Singapore 117543, Singapore; School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia. Electronic address: sumiyyahs@usm.my
Int J Biol Macromol, 2020 Aug 15;157:648-658.
PMID: 31790734 DOI: 10.1016/j.ijbiomac.2019.11.218

Abstract

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 °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 (qm) of 1000 mg g-1 at 30 °C. 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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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