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
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M. Valach
,
M. Navrátil
Abstract
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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© 2006 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Chemistry for the design and better understanding of cement-based materials and composites
- Surface modifications of natural clinoptilolite-dominated zeolite for phenolic pollutant mitigation
- Flame retardant property of nanopowder aerosols toward methane
- Trace analysis of lead by anodic stripping voltammetry with collection at interdigitated microelectrodes in small-volume samples
- Investigation of the solid samples evaporation from the auxiliary DC arc discharge in the atomic emission spectroscopy
- Determination of bioavailable iron in noncontaminated Slovak soils by flame atomic absorption spectrometry
- Determination of technetium-99 in soils and radioactive wastes using ICP-MS
- Synthesis and characterization of the rare-earth complexes with salicylic acid
- Spectrophotometric determination of nickel(II) in different samples by complexation with some triazolylazo dyes
- Complexes of biologically important ligands. I. Ternary complexes of nickel(II) comprising 1,10-o-phenanthrolineazosulfonamide derivatives and alkyldithiophosphates
- Effects of Cd(II) and Zn(II) complexes with bioactive ligands on some photosynthesizing organisms
- 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
- Reactions and applications of trans-1,2-epoxy-(Z,E)-cyclododeca-5,9-diene
- Dictionary of Carbohydrates. Edited by P. M. Collins. Second Edition
- In memoriam Associate Professor Ing. Vladimír Daněk, DrSc
