Journal
CHEMICAL RECORD
Volume 20, Issue 10, Pages 1220-1234Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/tcr.202000073
Keywords
Mercury ions removal; Chitosan-based adsorbents; Adsorption mechanism; Environmental remediation
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Funding
- National Nature Science Foundation of China [U1403295]
- SAFEA of China [GDT20186100427]
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Abatement of mercury emissions in air and waters has become a global challenge due to the toxicity of mercury species for life, yet actual remediation techniques are limited. In particular, adsorption of mercury ions onto solids is widely used but most adsorption techniques are not specific, and in turn, removal efficiency is lower. Adsorbents developed so far include activated carbon, clay, bentonite, cellulose and chitosan. Chitosan derivatives have recently attracted research attention for water purification because their molecular frames contain a large amount of -NH(2)and -OH groups that can chelate with metal ions specifically. This manuscript reviews recent advances in chitosan-based adsorbents designed to remove mercury ions from wastewater. Focus is placed on their design, synthesis, characterization, adsorption properties, adsorption mechanisms and applications.
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