 | Clean Technology 2008
Bio Energy, Renewables, Green Building, Smart Grid, Storage, and Water
Chapter 9: Environmental & Sensor Technologies |
| | Conversion of Glycerol-rich Product (GRP) into Biopolymers | | Authors: | F. Freitas, J. Pais, V.D. Alves, M. Carvalheira, N. Costa, R. Oliveira, M.A.M. Reis | | Affilation: | Universidade Nova de Lisboa, PT | | Pages: | 552 - 553 | | Keywords: | glycerol-rich product, exopolysaccharide, polyhydroxybutyrate, bioreactor | | Abstract: | Glycerol, a byproduct of many industrial processes, mainly in biodiesel production, is generated in quantities far beyond current consumption in traditional applications, thus making it a residue for which interesting applications are lacking. The objective of this work was the conversion of the glycerol-rich byproduct obtained in biodiesel production facilities into biopolymers using a Pseudomonas strain. Two distinct biopolymers were simultaneously produced: an extracellular polysaccharide (EPS) and intracellular polyhydroxybutyrate (PHB). Under optimized EPS production conditions in fed-batch mode, the maximum cellular PHB content was 39 % of CDW and the maximum EPS concentration was 12 g/l. The process is rather versatile since it may be controlled to favor the production of one or both biopolymers. This new process constitutes a promising technology for the valorization of glycerol-rich byproduct, since it accomplishes attractive EPS productivities with relatively low production costs. In addition, the EPS is a novel product with characteristic chemical composition and physical properties which are very competitive when compared to commercially available algal and plant polysaccharides. |  | This paper is available to CTSI members in PDF© format. | | ISBN: | 1-4200-8502-0 |
| Pages: | 724 |
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| Indexes: | Keywords, Authors, Affiliations |
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