Journal
CHEMICAL ENGINEERING JOURNAL
Volume 286, Issue -, Pages 68-75Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.10.065
Keywords
Synergistic biosorption; Crosslinked chitosan; Phenol; Nickel(II); Isotherm modeling
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Funding
- Chang Gung Memorial Hospital, Linkou, Taiwan (Chang Gung Medical Foundation, Taiwan) [BMRPD81]
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The biosorption of phenol and Ni(II) from binary mixtures on glutaraldehyde-crosslinked chitosan beads modified with histidine and Saccharomyces cerevisiae (SC-HIS-CCBs) was studied at 30 degrees C. Batch biosorption was performed at the optimal pH of 4.0. Under the concentration ranges studied (25-250 mg L-1 of Ni(II) and 25-250 mg L-1 of phenol), the amounts of the biosorption of both phenol and Ni(II) increased in the presence of the second component in contrast to the corresponding single phenol and Ni(II) systems. That is, synergistic biosorption between phenol and Ni(II) on the SC-HIS-CCBs was observed, particularly for phenol. Isotherm modeling showed that simultaneous biosorption of phenol and Ni(II) from binary solutions could be acceptably described by the modified Langmuir model, which could reflect the nature of chemical adsorption. (C) 2015 Elsevier B.V. All rights reserved.
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