title: Characterization of decrystallized chitosan and its application in biosorption of textile dyes.
abstract: Decrystallized chitosan was produced from shrimp shells with a low degree of crystallinity (10%) and a high anionic dye binding capacity. Raw, mixed dye wastewater from a textile factory was efficiently decolorized using decrystallized chitosan that was more efficient than using normal chitosan and activated carbon. Decolorization reached 90% within 10 min and could be carried out from pH 4.5 to 8.1. Decrystallized chitosan can be regenerated by 2 M H2SO4 and was reusable more than 10 times. It is, therefore, an attractive candidate for the removal of dyes from textile wastewater.
authors.affiliation: Bioprocess Technology, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani 12120, Thailand.
authors.forename: Trang Si
authors.initials: TS
authors.lastname: Trung
authors.forename: Chuen-How
authors.initials: CH
authors.lastname: Ng
authors.forename: Willem F
authors.initials: WF
authors.lastname: Stevens
mesh_terms: D000042:Absorption; D002686:Chitin / Q000031:analogs & derivatives* / Q000737:chemistry*; D048271:Chitosan; D004396:Coloring Agents / Q000737:chemistry* / Q000302:isolation & purification; D003460:Crystallization; D006863:Hydrogen-Ion Concentration; D007218:Industrial Microbiology; D007220:Industrial Waste; D013783:Textile Industry; D013784:Textiles
chemical_list: D004396:Coloring Agents; D007220:Industrial Waste; D002686:Chitin; D048271:Chitosan