Extraction of chitosan from prawn shell waste and its application in dye decolorization

Research Paper (postgraduate) from the year 2015 in the subject Chemistry - Bio-chemistry, , language: English, abstract: This paper presents an approach to remove the dye using chitosan coated glass beads at various pH, temperatureand contact time. Dye decolorization using biopolymers are recent method of interest to remove the dyes from thewaste water. In this initial attempt, the chitosan was extracted from prawn shell wastes and applied in bio sorptionof azo dyes. This polymer was encapsulated over glass beads. The encapsulated glass beads were packed in a glasscolumn and azo dye decolorization was carried out and determined calorimetrically using UV-Visiblespectrophotometer and different isotherms were calculated. The isotherms such as Langmuir, Freundlich andTemkin were examined and the appropriate model was identified. The interaction of the dye with chitosan wasstudied using SEM and FTIR.