Biomass obtained from olive pruning has been torrified at different conditions, namely at 180 - 280°C for 60 -120 min. , grinded with mill having sieve of 50 mesh (0.32 mm), and used as substrate in SHF experiments. The bioconversion has been carried out at flask scale using a mix of cellulosolytic, hemicellulosolitic and ßglucosidase enzymes, and a commercial strain of Saccharomyces cerevisiae. The comparison between the bioconversion yields achieved using grinded biomass or torrified + grinded biomass highlighted that: 1) Mild torrefaction conditions limit sugar degradation within 5-10 percent; 2) Torrified biomass do not lead to enzymatic and fermentation inhibition. How a torrefaction step could be integrated in an ethanol production process has been preliminary estimated, above all as regard the energy integration. The new developed concept has been patented.
Torrefaction as Biomass Pretreatment Step for Lignocellulosic Ethanol Production / David Chiaramonti; Andrea Maria Rizzo;S. Tedeschi; F. Zimbardi; G. Braccio; Paolo Taddei Pardelli. - STAMPA. - (2010), pp. 1560-1563. (Intervento presentato al convegno 18th European Biomass COnference and Exhibitions tenutosi a Lyon nel 2010) [10.5071/18thEUBCE2010-VP2.8.7].
Torrefaction as Biomass Pretreatment Step for Lignocellulosic Ethanol Production
CHIARAMONTI, DAVID;RIZZO, ANDREA MARIA;
2010
Abstract
Biomass obtained from olive pruning has been torrified at different conditions, namely at 180 - 280°C for 60 -120 min. , grinded with mill having sieve of 50 mesh (0.32 mm), and used as substrate in SHF experiments. The bioconversion has been carried out at flask scale using a mix of cellulosolytic, hemicellulosolitic and ßglucosidase enzymes, and a commercial strain of Saccharomyces cerevisiae. The comparison between the bioconversion yields achieved using grinded biomass or torrified + grinded biomass highlighted that: 1) Mild torrefaction conditions limit sugar degradation within 5-10 percent; 2) Torrified biomass do not lead to enzymatic and fermentation inhibition. How a torrefaction step could be integrated in an ethanol production process has been preliminary estimated, above all as regard the energy integration. The new developed concept has been patented.File | Dimensione | Formato | |
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Chiaramonti et al. - 2010 - Torrefaction as Biomass Pretreatment Step for Lignocellulosic Ethanol Production.pdf
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