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Thiomers of Chitosan and Cellulose: Effective Biosorbents for Detection, Removal and Recovery of Metal Ions from Aqueous Medium
Author(s) -
Seidi Farzad,
Reza Saeb Mohammad,
Huang Yang,
Akbari Ali,
Xiao Huining
Publication year - 2021
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.202100068
Subject(s) - chitosan , adsorption , cellulose , sorption , metal ions in aqueous solution , chelation , aqueous solution , metal , chemistry , regenerated cellulose , chemical engineering , organic chemistry , engineering
Removal of toxic metal ions using adsorbents is a well‐known strategy for water treatment. While chitosan and cellulose can adsorb weakly some types of metals, incorporating thiols as metal chelating agents can improve their sorption behaviors significantly. Presented in this review are the various chemical modification strategies applicable for thiolation of chitosan and cellulose in the forms of mercaptans, xanthates and dithiocarbamates. Moreover, much attention has been paid to the specific strategies for controlling the thiolation degree and characterization approaches for establishing the structure‐property relationship. Also, the kinetics and isotherm models that elucidate the adsorption processes and mechanisms induced by the thiomers have been explained. These thiomers have found great potentials in the applications associated with metal removal, metal recovery and metal detection.