Title:
Detoxification of Steam Exploded Arundo Donax
Author(s):
Zimbardi, F., Viola, E., Arcieri, G., Valerio, V., Villone, A.
Document(s):
Paper
Abstract:
This work deals with a new method to detoxify steam¬ exploded biomass by stripping the furfural, acetic acid and other volatile molecules before the step of enzymatic hydrolysis and fermentation, so optimizing the full process of bioethanol from lignocellulosics. The method consists into submitting the substrate to a steam/hot air stream that takes away the volatile inhibitors, while maintaining the fiber wet, so preventing the hornification phenomenon. The trials were carried out on steam exploded Arundo donax (treated at 210 °C, 6 min) and two different systems were assembled to perform the detoxification: fixed bed and vibro¬fluidized bed reactor. By means of the former, the inhibitors were removed using only steam for 6 hours, while, by means of the latter, a flux of air/steam was used and 1 hour is sufficient for the detoxification. The so detoxified product was tested for ethanol production by SSF procedure and the yields were compared with the SSF on the same substrate detoxified by different methods: by drying and by water washing. The results of the ethanol yields have been: 58% with air/steam detoxification, 54% with water washing, and 49% with drying.
Keywords:
bioethanol, steam explosion, inhibitors
Topic:
R&D on Processes for Solid, Liquid and Gaseous Fuels from Biomass
Subtopic:
Bioethanol production and sugar release from lignocellulosic
Event:
20th European Biomass Conference and Exhibition
Session:
3DV.1.36
Pages:
1678 - 1680
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-3DV.1.36
Price:
FREE
