title: Immobilization of Saccharomyces diastaticus on wood chips for ethanol production.
abstract: Saccharomyces diastaticus cells were immobilized onto beech wood chips of different particle size and three pH values. pH values in the range 5.0-6.0, and 1.84-1.92 mm particle size had a positive effect on the immobilization process. The chosen carrier--1.84 mm-sized wood chips adsorbed 150 mg dry cell mass per g dry carrier mass. The Gibbs free energy and the activation energy for the first (monolayer) and second (multilayer) immobilization stages was 4581, 19,090 and 8590 J g mol-1, respectively. The kinetics of immobilized cell systems in ethanol production have been studied in a packed bed-reactor. Ethanol production and the respiration quotient (RQ) were at a maximum at a dilution rate of 0.16/h. The reactor was operated under steady-state conditions for 30 d at the dilution rate 0.16/h.
authors.affiliation: Faculty of Technology, University of Novi Sad, Yugoslavia.
authors.forename: R
authors.initials: R
authors.lastname: Razmovski
authors.forename: D
authors.initials: D
authors.lastname: Pejin
mesh_terms: D019149:Bioreactors; D002245:Carbon Dioxide / Q000378:metabolism; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D010100:Oxygen / Q000378:metabolism; D012440:Saccharomyces / Q000378:metabolism*; D013213:Starch / Q000378:metabolism; D014934:Wood
chemical_list: D002245:Carbon Dioxide; D000431:Ethanol; D013213:Starch; D010100:Oxygen