02463naa a2200277 i 4500 acta75906 20220808154016.0 220526s2021 hu o 1|| eng d 978-963-306-835-9 SZTE Egyetemi Kiadványok Repozitórium hun eng Haranghy Laura Detection of the biodegradability of cellulosic biomass by dielectric parameters [elektronikus dokumentum] / Haranghy Laura University of Szeged Szeged 2021 5-9 Proceedings of the International Symposium on Analytical and Environmental Problems In biomass utilization technologies enzymatic hydrolysis and fermentation processes are widely used. Development of rapid and non-destructive measurement methods is needed to detect the enzymatic biodegradation of cellulosic biomass, for instance. In our researches the applicability of dielectric measurement methods was investigated for the monitoring the efficiency of enzymatic hydrolysis of Cobex (corn cob) biomass. The dielectric behavior of the Cobex suspensions and fermentation broth was characterized by the dielectric constant and dielectric loss factor, measured at a frequency range from 200 to 2400 MHz. The dielectric parameters were also determined during the ethanol fermentation process of the preliminary hydrolyzed biomass. Our results verified, that the dielectric parameters in the frequency range of 200-100 MHz are sensitive to the chemical changes occurred during the enzymatic hydrolysis of cellulose contented biomass, and, as well as to the presence of ethanol component in the fermentation broth. There was found good correlation of dielectric constant (at frequency range from 300 to 900 MHz) with the concentration of reducing sugars (produced in enzymatic hydrolysis), and the dielectric constant and dielectric loss factor (determined at the frequency of 300 MHz) with the ethanol concentration. Műszaki és technológiai tudományok Környezetmérnöki tudományok Biomassza hasznosítása, Környezetkémia Jákói Zoltán aut Lemmer Balázs aut Hodúr Cecília aut Beszédes Sándor aut International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged) http://acta.bibl.u-szeged.hu/75906/1/proceedings_of_isaep_2021_005-009.pdf Dokumentum-elérés