Abstract
The release of dye residue into water has been threatening human health and the aquatic ecosystem for decades. Chitosan is one of the natural abundant biomasses that show excellent adsorption toward colorants. Nevertheless, sophisticated chemical modifications of chitosan are usually required to maintain its physical and chemical stabilities in practical applications. In the present study, simple freeze-drying has been applied to chitosan beads which show good stability at low pHs. The results show complete decolourization of Reactive Blue 19 (RB19) within 2 hours with a pH of 3 at a temperature of 37 °C. The encapsulation of live bacterium Lactobacillus casei (L. casei) into chitosan beads for dyestuff removal is also performed. Kinetics studies show a faster initial rate of adsorption by L. casei chitosan beads with a pH of 3 at a temperature of 37 °C. The adsorptions partially follow the intraparticle diffusion mechanism.
| Original language | English |
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| Title of host publication | Textile Bioengineering and Informatics Symposium Proceedings 2014 - 7th Textile Bioengineering and Informatics Symposium, TBIS 2014, in conjunction with the 5th Asian Protective Clothing Conference, APCC 2014 |
| Publisher | Binary Information Press |
| Pages | 101-107 |
| Number of pages | 7 |
| Publication status | Published - 1 Jan 2014 |
| Event | 7th Textile Bioengineering and Informatics Symposium, TBIS 2014, in conjunction with the 5th Asian Protective Clothing Conference, APCC 2014 - The Hong Kong Polytechnic University, Hong Kong, Hong Kong Duration: 6 Aug 2014 → 8 Aug 2014 |
Conference
| Conference | 7th Textile Bioengineering and Informatics Symposium, TBIS 2014, in conjunction with the 5th Asian Protective Clothing Conference, APCC 2014 |
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| Country | Hong Kong |
| City | Hong Kong |
| Period | 6/08/14 → 8/08/14 |
Keywords
- Chitosan
- Freeze-drying
- Lactobacillus casei
- Reactive blue 19
- Removal
ASJC Scopus subject areas
- Bioengineering
- Biomaterials