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Chitosan(chitin)/cellulose composite biosorbents prepared using ionic liquid for heavy metal ions adsorption
Author(s) -
Sun Xiaoqi,
Peng Bo,
Ji Yang,
Chen Ji,
Li Deqian
Publication year - 2009
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.11797
Subject(s) - adsorption , chitosan , cellulose , ionic liquid , chitin , composite number , chemistry , metal ions in aqueous solution , nuclear chemistry , regenerated cellulose , hydrogen bond , metal , chemical engineering , polymer chemistry , materials science , organic chemistry , molecule , composite material , engineering , catalysis
Chitosan(chitin)/cellulose composites as biodegradable biosorbents were prepared under an environment‐friendly preparation processes using ionic liquids. Infrared and X‐ray photoelectron spectra indicated the stronger intermolecular hydrogen bond between chitosan and cellulose, and the hydroxyl and amine groups were believed to be the metal ion binding sites. Among the prepared biosorbents, freeze‐dried composite had higher adsorption capacity and better stability. The capacity of adsorption was found to be Cu(II) (0.417 mmol/g) > Zn(II) (0.303 mmol/g) > Cr(VI) (0.251 mmol/g) > Ni(II) (0.225 mmol/g) > Pb(II) (0.127 mmol/g) at the same initial concentration 5 mmol L −1 . In contrast to some other chitosan‐type biosorbenrts, preparation and component of the biosorbent were obviously more environment friendly. Moreover, adsorption capacity of chitosan in the blending biosorbent could be fully shown. © 2009 American Institute of Chemical Engineers AIChE J, 2009