The influence of ferrous sulfate utilization on the sugar yields from dilute-acid pretreatment of softwood for bioethanol production

被引：32
|
作者：
Monavari, Sanam [1 ]
Galbe, Mats [1 ]
Zacchi, Guido [1 ]
机构：
[1] Lund Univ, Dept Chem Engn, SE-22100 Lund, Sweden
来源：
BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 02期
关键词：
Bioethanol; Steam pretreatment; SO2; Metal salt (FeSO4); Enzymatic hydrolysis; 2-STEP STEAM PRETREATMENT; ENZYMATIC-HYDROLYSIS; CORN STOVER; INORGANIC SALTS; ETHANOL; IMPREGNATION; DEGRADATION; FERMENTATION; INHIBITORS; FEATURES;
D O I：
10.1016/j.biortech.2010.08.077
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
By employing metal salts in dilute-acid pretreatment the severity can be reduced due to reduced activation energy. This study reports on a dilute-acid steam pretreatment of spruce chips by addition of a small amount of ferrous sulfate to the acid catalyst, i.e., either SO2, H2SO3 or H2SO4. The utilization of ferrous sulfate resulted in a slightly increased overall glucose yield (from 74% to 78% of the theoretical value) in pretreatment with SO2 and H2SO3. Impregnation with ferrous sulfate and sulfuric acid did not give any improvement compared with pretreatment based solely on H2SO4. (C) 2010 Published by Elsevier Ltd.
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页码：1103 / 1108
页数：6
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