Techno-economic aspects of on site cellulase production

Barta, Zsolt and Sassner, P. and Zacchi, G. and Réczey, Istvánné (2008) Techno-economic aspects of on site cellulase production. HUNGARIAN JOURNAL OF INDUSTRY AND CHEMISTRY, 36 (1 2). pp. 5-9. ISSN 0133-0276

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Abstract

On-site cellulase production for lignocellulosic ethanol production based on SO 2-impregnated steam pretreatment followed by simultaneous saccharification and fermentation was investigated from a techno-economic aspect using Aspen Plus and Aspen Icarus softwares. The enzyme fermentation was assumed to operate batch-wise with a cycle time of 100 hours. The base case included sixteen 343 m3 aerated fermentors arranged in four lines operating according to a merry-go-round pattern. Besides the base case, three cases, with improved productivities, were investigated. The cost of the on-site enzyme production was estimated to range between 6.7-16.5 Eurocent/L ethanol. The cost of carbon source was not included in the total production cost, since the pretreated material was produced in the process.

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