Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23384
Title: Study of freeze-dried chitosan beads encapsulating live lactic acid bacteria for removal of reactive dyes
Authors: Luk, CHJ
Yip, J
Yuen, CWM
Lam, KH
Kan, CW 
Keywords: Chitosan beads
Freeze-drying
Lactobacillus casei
Reactive blue 19
Removal
Issue Date: 2015
Publisher: Binary Information Press
Source: Journal of fiber bioengineering and informatics, 2015, v. 8, no. 1, p. 13-23 How to cite?
Journal: Journal of Fiber Bioengineering and Informatics 
Abstract: Water pollution by the discharge of dye residue has been polluting the planet for decades. Chitosan is one of the natural abundant biomasses that show excellent adsorption toward colorants. Nevertheless, sophisticated chemical modifications of chitosan are inevitable to enhance physical and chemical stabilities in practical applications. In the present study, simple freeze-drying has been adopted to chitosan (CHI) beads showing good stability at low levels of pH. The results show complete decolourisation of Reactive Blue 19 (RB19) within 2 hours at pH 3 and temperature of 37 ¢XC. The encapsulation of live bacterium Lactobacillus casei (L. casei) into chitosan beads for dyestuff removal is also evaluated. Kinetics studies show a faster initial rate of adsorption by L. casei-chitosan beads at pH 3 and temperature of 37 ¢XC. The adsorptions partially follow the intraparticle diffusion mechanism.
URI: http://hdl.handle.net/10397/23384
ISSN: 1940-8676
DOI: 10.3993/jfbi03201502
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