Improvement of the Hydrolysis and Fermentation of Rice Straw by Saccharomyces cerevisiae by Ammonia-Based Pretreatments

被引:0
作者
Motamedi, Hossein [1 ]
Hedayatkhah, Abolghasem [1 ]
Varzi, Hossein Najafzadeh [2 ]
机构
[1] Shahid Chamran Univ Ahvaz, Fac Sci, Dept Biol, Ahvaz, Iran
[2] Shahid Chamran Univ Ahvaz, Fac Vet Med, Dept Basic Sci, Ahvaz, Iran
来源
BIORESOURCES | 2015年 / 10卷 / 03期
关键词
Rice straw; Ethanolic ammonia pretreatment; Methanolic ammonia pretreatment; Ethanol; SSF; Saccharomyces cerevisiae; AQUEOUS-AMMONIA; CORN STOVER; ETHANOL-PRODUCTION; SIMULTANEOUS SACCHARIFICATION; SOAKING; FRACTIONATION;
D O I
暂无
中图分类号
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号
0805 ; 080502 ; 0822 ;
摘要
This work aimed at improving the hydrolysis and fermentation processes of rice straw through different ammonia-based pretreatments to aid in bioethanol production. For this purpose, pretreatment was performed at 70 degrees C for 12 h, followed by enzymatic hydrolysis at 50 degrees C for 24 h and 72 h using 15 FPU cellulase and 30 CBU cellobiase. The best hydrolysis yield, based on the production yield and rate, for the 24-h digestion period was samples that had been soaked in methanolic aqueous ammonia (SMAA), with 72% of the theoretical maximum. However, for the 72-h digestion period, soaking in ethanolic aqueous ammonia (SEAA) was the best method, with 88% yield. In the case of ethanol production after 24 h, the SMAA pretreatment and SSF resulted in the highest yield at 72%. However, after 72 h of simultaneous saccharification and fermentation (SSF), SMAA-pretreated rice straw showed a yield of 85%, while the SEAA-pretreated sample resulted in a noteworthy yield of 89% of the theoretical maximum. However, with regard to the production yield and rate and pretreatment cost, the best method for ethanol production was judged to be the SMAA with 5% methanol, particularly after 24 h of SSF.
引用
收藏
页码:4360 / 4374
页数:15
相关论文
共 25 条
[1]   Biocomposites from wheat straw nanofibers: Morphology, thermal and mechanical properties [J].
Alemdar, Ayse ;
Sain, Mohini .
COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (02) :557-565
[2]  
[Anonymous], 2008, NRELTP51042629 LAB A
[3]   Effect of urea and urea-gamma treatments on cellulose degradation of Thai rice straw and corn stalk [J].
Banchorndhevakul, S .
RADIATION PHYSICS AND CHEMISTRY, 2002, 64 (5-6) :417-422
[4]   Bioethanol production from rice straw: An overview [J].
Binod, Parameswaran ;
Sindhu, Raveendran ;
Singhania, Reeta Rani ;
Vikram, Surender ;
Devi, Lalitha ;
Nagalakshmi, Satya ;
Kurien, Noble ;
Sukumaran, Rajeev K. ;
Pandey, Ashok .
BIORESOURCE TECHNOLOGY, 2010, 101 (13) :4767-4774
[5]  
Campbell C.J., 1998, SCI AM, V278, P78, DOI [DOI 10.1038/SCIENTIFICAMERICAN0398-78, 10.1038/scientificamerican0398-78]
[6]   Improvement of biogas production from oil palm empty fruit bunches (OPEFB) [J].
Carrillo Nieves, Danay ;
Karimi, Keikhosro ;
Horvath, Ilona Sarvari .
INDUSTRIAL CROPS AND PRODUCTS, 2011, 34 (01) :1097-1101
[7]   Biofuels securing the planet's future energy needs [J].
Demirbas, Ayhan .
ENERGY CONVERSION AND MANAGEMENT, 2009, 50 (09) :2239-2249
[8]  
Dewulf J, 2006, RENEWABLES BASED TEC, DOI [10.1002/0470022442, DOI 10.1002/0470022442]
[9]  
Dowe N., 2001, NRELTP51042630 LAB A
[10]  
Drapcho C.M., 2008, BIOFUELS ENG PROCESS