FED-BATCH SIMULTANEOUS SACCHARIFICATION AND FERMENTATION OF MICROWAVE/ACID/ALKALI/H2O2 PRETREATED RICE STRAW FOR PRODUCTION OF ETHANOL |
| |
Authors: | Zhu Shengdong Wu Yuanxin Zhao Yufeng Tu Shaoyong Xue Yongping Yu Ziniu Zhang Xuan |
| |
Affiliation: |
a School of Chemical Engineering and Pharmacy, Wuhan Institute of Chemical Technology, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, Wuhan, China
b College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
c Hubei Yichang Yile Corporation, Yichang, China |
| |
Abstract: | The batch simultaneous saccharification and fermentation (SSF) of microwave/acid/alkali/H2O2 pretreated rice straw to ethanol was optimized using cellulase from Trichoderma reesei and Saccharomyces cerevisiae YC-097 cells prior to the fed-batch SSF studies. The batch SSF optima were 10% w/v substrate, 40°C, 15 mg cellulase/g substrate, initial pH 5.3, and 72 hours. Under the optimum conditions the ethanol concentration and its yield were 29.1 g/L and 61.3% respectively. Based on the optimal batch SSF, the fed-batch SSF was investigated and its operation parameters were optimized. Under its optimal conditions the ethanol concentration reached 57.3 g/L, while its productivity and yield were only slightly less than those in the batch SSF. This suggests that fed-batch SSF is a potential operation mode for effective ethanol production from microwave/acid/alkali/H2O2 pretreated rice straw. |
| |
Keywords: | Fed-batch Batch Simultaneous saccharification and fermentation (SSF) Rice straw Microwave/acid/alkali/H2O2 pretreatment Ethanol |
本文献已被 InformaWorld 等数据库收录! |
|