Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2016 Vol: 8 Issue: 6

Removal of dyes from aqueous solution by using modified chitosan as an adsorbent


Various adsorbents have been used to remove different types of dyes from wastewater especially those that are harmful to mankind. Activated carbons, plant or lignocelluloses wastes, clays and biopolymers are among the common adsorbents used. Chitosan, a type of biopolymer, is a good adsorbent to remove various kinds of anionic and cationic dyes. Chemical modifications that lead to the formation of chitosan derivatives, magnetic chitosan and chitosan composites have gained much attention, extensively studied and widely reported in the literatures. This review provides relevant literature of the past ten years on the application of chitosan composites for removing dyes. A list of chitosan composites with their adsorption capacity and the experimental conditions has been compiled. This review also includes the mechanisms that might be involved during the adsorption process.