Original scientific paper

Comparison Between Different Cultivation Techniques for Bioethanol Production from Raw Sugar Beet Juice

Mladen Pavlečić ; Faculty of Food Technology and Biotechnology; University of Zagreb, Croatia
Vedran Lulić ; Faculty of Food Technology and Biotechnology; University of Zagreb, Croatia
Slavica Gašpari ; Faculty of Food Technology and Biotechnology; University of Zagreb, Croatia
Mirela Ivančić Šantek ; Faculty of Food Technology and Biotechnology; University of Zagreb, Croatia
Predrag Horvat ; Faculty of Food Technology and Biotechnology; University of Zagreb, Croatia
Božidar Šantek orcid.org/0000-0001-9583-534X ; Faculty of Food Technology and Biotechnology; University of Zagreb, Croatia

Abstract

In this investigation, the production of bioethanol on the raw sugar beet juice by Saccharomyces cerevisiae was studied. Following cultivation techniques for bioethanol productions were used: batch, fed batch and repeated batch. In batch process substrate conversion coefficient (YP/S) was 0,375 g/g, bioprocess effi eciency (E) 69,70 % and productivity (Pr) 0,53 g/Lh, respectively. During fed batch process bioprocess efficiency parameters have following values: YP/S = 0,502 g/g, E = 93,4 % and Pr = 0,50 g/Lh. Furthermore, in repeated batch process bioprocess efficiency parameters have following values: YP/S = 0,360 g/g, E = 66,91 % and Pr = 0,66 g/Lh. On the basis of previously presented results it is clear that fed batch and repeated batch processes have considerably higher potential for use in the industrial bioethanol production although further optimization of repeated batch cultivation techniques has to be performed.

Keywords

bioethanol; Saccharomyces cerevisiae; raw sugar beet juice; different cultivation techniques

Hrčak ID:

84935

URI

https://hrcak.srce.hr/84935

Publication date:

24.7.2012.

Article data in other languages: croatian

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