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Removal of chromium(VI) Ions from aqueous solutions with protonated crosslinked chitosan
Author(s) -
Huang Ruihua,
Yang Bingchao,
Liu Qian
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38685
Subject(s) - adsorption , aqueous solution , freundlich equation , chromium , chitosan , protonation , chemistry , hydroxide , sodium hydroxide , sulfate , ion , valence (chemistry) , inorganic chemistry , chemical engineering , polymer chemistry , nuclear chemistry , organic chemistry , engineering
This articles provided information on Cr(VI) adsorption onto protonated crosslinked chitosan particles (PCPs) as an adsorbent. Batch experiments were performed to investigate the effects of the adsorbent dosage, pH, contact time, initial Cr(VI) concentration, and coexisting ions on the adsorption capacity and the regeneration ability of the adsorbent. The equilibrium data fit well with the Freundlich and Redlich–Peterson isotherm models. The presence of other anions weakened Cr(VI) adsorption, especially high‐valence anion such as sulfate. PCP could be regenerated well by a 0.1 N sodium hydroxide solution. Electrostatic attraction was the main driving force for Cr(VI) adsorption. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013