METHANE FERMENTATION OF POMACE WASTES GENERATED IN CEREAL COFFEE PRODUCTION
2015
J. BOHDZIEWICZ, Ph.D., D.Sc. (Eng.), Professor Silesian University of Technology in Gliwice | J. CEBULA, Ph.D., D.Sc. (Eng.), Associate Professor The University of Bielsko-Biała | K. PIOTROWSKI, Ph.D., D.Sc. (Eng.), Assistant Professor Silesian University of Technology in Gliwice P. SAKIEWICZ, Ph.D. (Eng.) | Silesian University of Technology in Gliwice L. PRZYWARA, Ph.D. (Eng.) | The University of Bielsko-Biała T. PIMONENKO, Ph.D (Econ.) Sumy State University
Batch methane fermentation of pomace wastes from cereal coffee production was experimentally studied. Data were elaborated with modified Gompertz kinetic model. The 10-time increase in reactor load 5-50 g/dm3 corresponds to proportional growth of maximal biogas yield Hmax from 421.94 to 4119.37 cm3 and growth of maximum process rate Rmax from 1.0745 to 10.7379 cm3/h. Unit reactor yield (for 1 g of raw mass, dry mass and dry organic mass) decreases, however, with increase in reactor load within 5-30 g/dm3 range while unit maximum process rate turned out to be practically load- independent.
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