Low Temperature and Long Residence Time AFEX Pretreatment of Corn Stover

被引:27
|
作者
Bals, Bryan D. [1 ,2 ]
Teymouri, Farzaneh [3 ]
Campbell, Tim [3 ]
Jin, Mingjie [1 ,2 ]
Dale, Bruce E. [1 ,2 ]
机构
[1] Michigan State Univ, Dept Chem Engn & Mat Sci, Biomass Convers Res Lab, Lansing, MI 48910 USA
[2] Michigan State Univ, Great Lakes Bioenergy Res Ctr, Lansing, MI 48910 USA
[3] MBI Int, Lansing, MI 48910 USA
关键词
AFEX; Biofuel; Corn stover; Pretreatment; Ammonia; Regional processing; ENZYMATIC-HYDROLYSIS; BIOETHANOL PRODUCTION; ETHANOL-PRODUCTION; RICE STRAW; TECHNOLOGIES; SWITCHGRASS; BIOMASS;
D O I
10.1007/s12155-011-9140-8
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Low temperature and long residence time pretreatments have been proposed as an alternative to conventional pretreatments within a centralized biorefinery, allowing for a decentralized pretreatment without high energy costs. Ammonia fiber expansion (AFEX (TM)) pretreatment may be uniquely suitable for decentralized pretreatment, and this study considers the possibility of decreasing the temperature in AFEX pretreatment of corn stover. AFEX pretreatment at 40A degrees C and 8 h produced comparable sugar and ethanol yields as conventional AFEX pretreatment at high temperatures and short residence time during subsequent hydrolysis and fermentation. Increasing the ammonia loading at these temperatures tends to increase digestibility, although the moisture content of the reaction has little effect. This study suggests a greater flexibility in AFEX pretreatment conditions than previously thought, allowing for an alternative approach for decentralized facilities if the economic conditions are appropriate.
引用
收藏
页码:372 / 379
页数:8
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