Journal
BIOMASS & BIOENERGY
Volume 119, Issue -, Pages 191-197Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2018.09.020
Keywords
Enzymatic hydrolysis; High-solids; Fed-batch process; Lignocellulosic biomass; Second-generation bioethanol; Sorghum straw
Funding
- National Council of Science and Technology (CONACYT)
- Secretary of Energy (SENER) [CONACYT-SENER 2009-150001, CONACYT-SENER 2014-05-249564]
Ask authors/readers for more resources
A fed-batch approach in stirred tank bioreactors for achieving enzymatic hydrolysis with a high load of lignocellulosic mass is described in this paper. This approach allows ease of mixing, increasing the load of a higher concentration of biomass without performance decrease, in comparison with the typical batch process, and consequently it provides a higher concentration of reducing sugars for a down-stream fermentation process; additionally, the fed-batch process times are shorter than the ones that have been reported so far. The work basically consisted of experiments in fed-batch operation with final sorghum straw loadings of 5, 10, 15 and 20% w v(-1), using a commercial enzyme complex, and conventional batch experiments for comparison purposes. Without typical operation problems of batch processes such as the lack of effective initial mixing and difficult adjustment of pH and temperature, hydrolysate broths up to a reducing sugars concentration of 130 g L-1 were obtained. Finally, hydrolysates were fermented to verify effective bioethanol production, reaching concentrations of bioethanol of 48 g L-1.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available