Paper details

Title:

Torrefaction as Biomass Pretreatment Step for Lignocellulosic Ethanol Production

Author(s):

Chiaramonti, D., Rizzo, A.M., Tedeschi, S., Zimbardi, F., Braccio, G., Taddei Pardelli, P.

Document(s):

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.

Keywords:

bioethanol, biomass, fermentation, pretreatment, torrefaction

Topic:

Biomass Torrefaction

Subtopic:

Biomass torrefaction (session 2)

Event:

18th European Biomass Conference and Exhibition

Session:

VP2.8.7

Pages:

1560 - 1563

ISBN-13:

978-88-89407-56-1

ISBN-10:

88-89407-56-5

Paper DOI:

10.5071/18thEUBCE2010-VP2.8.7

Price:

FREE