z-logo
Premium
Cell immobilization in κ‐carrageenan for ethanol production
Author(s) -
Luong J. H. T.
Publication year - 1985
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260271205
Subject(s) - zymomonas mobilis , yield (engineering) , ethanol , ethanol fuel , chemistry , fermentation , carrageenan , kinetics , chromatography , ethanol fermentation , mass transfer , chemical engineering , biochemistry , materials science , physics , quantum mechanics , engineering , metallurgy
A combination of extended Monod kinetics and the diffusional equation was used for evaluating the effectiveness factor of entrapped immobilized cells. Based on the kinetics of Zymomonas mobilis reported in the literature, the numerical results have revealed that the problem of mass transfer diffusional restrictions can be neglected by using small beads (1 mm in diameter) with a corresponding cell loading up to 276 g/L gel. On the basis of the numerical results obtained, the application of immobilized cells for continuous ethanol production was investigated. The κ‐carrageenan method was utilized to entrap Z. mobilis CP4, a potential ethanol producer. A two stage fermentation process has also been developed for ethanol production by the Z. mobilis carrageenan‐bound cells. About 90 g/L ethanol was produced by immobilized cells at a total residence time of 1.56 h. The ethanol yield was estimated to be 93% of theoretical. The results obtained in this study also indicated that the control of optimum pH in an immobilized cell column is necessary to enhance the rate of ethanol production.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here