Title:
Bioethanol Production from Arundo Donax Hydrolysate Using Co-Culture of Pichia Stipitis and Saccharomyces Cerevisiae in a Stirred Tank Bioreactor
Author(s):
De Canio, P., De Bari, I., Liuzzi, F., Capece, A., Romano, P.
Document(s):
Paper
Abstract:
An efficient production of ethanol from lignocellulosic hydrolyzates requires the use of microorganisms capable to convert both glucose and xylose sugars with high yields. One approach to achieve this target is the use of yeast co¬cultures, formed by Pichia stipitis, renamed Scheffersomyces stipitis, and Saccharomyces cerevisiae species, which are characterized by different metabolic activities. In this context, numerous parameters, such as temperature, pH and oxygen requirements are critical factors in the fermentation process and, among these, aeration is very important because of its influence on xylose conversion. In this work, ethanol production from Arundo Donax hydrolyzates was evaluated in a stirred tank bioreactor using co-cultures of Schef. stipitis and S. cerevisiae strains. Experimental tests were performed at different values of aeration, providing different volumetric oxygen transfer coefficient (KLa) and using activated charcoal to reduce the inhibitors toxic effect.
Keywords:
activated carbon, bioethanol, fermentation
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.1.72
Pages:
1709 - 1712
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-3DV.1.72
Price:
FREE
