TY - JOUR T1 - Study of Freeze-dried Chitosan Beads Encapsulating Live Lactic Acid Bacteria for Removal of Reactive Dyes AU - Chi Him Jim Luk, Joanne Yip, Chun Wah Marcus Yuen, Kim Hung Lam & Chi Wai Kan JO - Journal of Fiber Bioengineering and Informatics VL - 1 SP - 13 EP - 23 PY - 2015 DA - 2015/08 SN - 8 DO - http://doi.org/10.3993/jfbi03201502 UR - https://global-sci.org/intro/article_detail/jfbi/4682.html KW - Chitosan Beads KW - Freeze-drying KW - Lactobacillus Casei KW - Reactive Blue 19 KW - Removal AB - 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 °C. 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 °C. The adsorptions partially follow the intraparticle diffusion mechanism.

Chi Him Jim Luk, Joanne Yip, Chun Wah Marcus Yuen, Kim Hung Lam and Chi Wai Kan. (2015). Study of Freeze-dried Chitosan Beads Encapsulating Live Lactic Acid Bacteria for Removal of Reactive Dyes. Journal of Fiber Bioengineering and Informatics. 8 (1). 13-23. doi:10.3993/jfbi03201502