Ethanol production from sweet sorghum residual |
| |
Authors: | Jingyang BAN Jianliang YU Xu ZHANG Tianwei TAN |
| |
Affiliation: | (1) College of Life Science and Technology, Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing, 100029, China |
| |
Abstract: | In this work, the ethanol production from sweet sorghum residue was studied. Sweet sorghum residue was hydrolyzed with phosphoric
acid under mild conditions. The liquid hydrolysate was fermented by Pachysolen tannophilus, and the hydrolysis residue was fermented by the simultaneous saccharification and fermentation (SSF) using Saccharomyces cerevisiae with cellulase (60 FPU/g dry materials). Orthogonal experiments were carried out to investigate the effects of main reaction
condition factors, such as temperature, acid concentration, time and dry-matter content, on the reducing sugar yield. The
results show that the optimal reaction conditions should be 120°C, 80 g/L, 80 min and 10%, respectively. Under these conditions,
0.3024 g reducing sugar/g dry material was obtained. The liquid hydrolysate was then fermented by P.tannophilus with the highest ethanol concentration of 14.5 g/L. At a water-insoluble solid concentration of 5%, 5.4 g/L ethanol was obtained
after 12 h of SSF. The total ethanol yield was 0.147 g/g dry material, which would be beneficial for the application of ethanol
production from sweet sorghum residue.
__________
Translated from Journal of Beijing University of Chemical Technology, 2007, 34(6): 637-639, 652 译自: 北京化工大学学报] |
| |
Keywords: | cellulosic hydrolysis sweet sorghum ethanol SSF phosphoric acid hydrolysis |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|