Application of chitosan and its derivatives as adsorbents for dye removal from water and wastewater: A review

• Published in: Carbohydrate polymers Vol. 113; pp. 115 - 130
• Main Authors: Vakili, Mohammadtaghi, Rafatullah, Mohd, Salamatinia, Babak, Abdullah, Ahmad Zuhairi, Ibrahim, Mahamad Hakimi, Tan, Kok Bing, Gholami, Zahra, Amouzgar, Parisa
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 26-11-2014; Elsevier
• Subjects: Adsorbents; Adsorption; Applied sciences; Chemistry; Chitosan; Chitosan - analogs & derivatives; Chitosan - chemistry; Coloring Agents - chemistry; Cross-linking; Dye; Exact sciences and technology; General and physical chemistry; Grafting; Natural polymers; Other wastewaters; Physicochemistry of polymers; Pollution; Starch and polysaccharides; Surface physical chemistry; Waste Water; Wastewater treatment; Wastewaters; Water Purification; Water treatment and pollution; Dye; Chitosan; Adsorption; Cross-linking; Grafting; Wastewater treatment; Water treatment; Dyes; Liquid solid adsorption; Review; Organic adsorbent; Chitosan derivatives; Aqueous medium; Preparation; Oside polymer; Waste water purification
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2014.07.007

•This review presents the application of chitosan and its derivatives for dyes treatment.•Various modification methods of chitosan and its derivatives have been reviewed.•Future perspectives in this direction have been proposed.
Chitosan based adsorbents have received a lot of attention for adsorption of dyes. Various modifications of this polysaccharide have been investigated to improve the adsorption properties as well as mechanical and physical characteristics of chitosan. This review paper discusses major research topics related to chitosan and its derivatives for application in the removal of dyes from water. Modification of chitosan changes the original properties of this material so that it can be more suitable for adsorption of different types of dye. Many chitosan derivatives have been obtained through chemical and physical modifications of raw chitosan that include cross-linking, grafting and impregnation of the chitosan backbone. Better understanding of these varieties and their affinity toward different types of dye can help future research to be properly oriented to address knowledge gaps in this area. This review provides better opportunity for researchers to better explore the potential of chitosan-derived adsorbents for removal of a great variety of dyes.