%0 Journal Article %T DIFFUSIONAL PROCESSES IN THE BIOMASS CONVERSION %A Stanko A. £¿eraji£¿ %A Jelenka B. Savkovic-Stevanovic %J Petroleum and Coal %D 2012 %I Slovnaft V?RUP %X Diffusional process with biochemical reaction was investigated. Fermentation for ethanol productionwith Saccharomces Cerevisia was carried out with Ca-alginate gel in the form of layer sphericalbeads in the anaerobic conditions. The kinetic parameter determination was achieved by fittingreaction progress curves to the experimental data. The diffusion coefficients determination wasperformed for experimental conditions. The obtained results shows effect the biochemical reactionrate and diffusion. %K Ethanol production %K diffusion rate %K transfer coefficient %K immobilized cell %K spherical bed. %U http://www.vurup.sk/sites/default/files/downloads/pc_2_2012_savkovic_169.pdf