Efficiency of a fixed-bed and a gas-lift three-column reactor for continuous production of ethanol by pectate-and alginate-immobilized Saccharomyces cerevisiae cells

被引：0

作者：

M. Valach

M. Navrátil

V. Horváthová

J. Zigová

E. Šturdík

E. Hrabárová

P. Gemeiner

机构：

[1] Slovak University of Technology,Department of Biochemical Technology, Faculty of Chemical and Food Technology

[2] University of St. Cyril and Methodius,Department of Biotechnology, Faculty of Natural Sciences

[3] Slovak Academy of Sciences,Institute of Chemistry

来源：

Chemical Papers | 2006年 / 60卷

关键词：

Fermentation; Alginate; Pectin; Ethanol Production; Calcium Alginate;

D O I：

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摘要：

Ethanol-tolerant and thermo-tolerant yeast strain Saccharomyces cerevisiae C11-3 cells immobilized in calcium pectate and calcium alginate gels were used for ethanol fermentation in a three-reactor system with a gradient temperature control. The fermentation process has been tested in a fixed-bed and a gas-lift arrangement. The gas-lift system was more efficient due to a better mass transport between the phases. Abrasion was more evident in calcium alginate particles, while calcium pectate beads were not significantly damaged. Two different concentrations of alginate were tested and calcium pectate gel was demonstrated to be more suitable as an immobilization material in comparison with calcium alginate due to its mechanical resistance and favourable diffusion parameters, providing an ethanol production of more than 7.5 g dm−3 h−1 over a period of 630 h.

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