Journal
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
Volume 87, Issue 3, Pages 847-857Publisher
SPRINGER
DOI: 10.1007/s00253-010-2654-8
Keywords
Recalcitrance; Cellulosic ethanol; Woody/Forest biomass; SPORL Enzymatic hydrolysis/saccharification; Pretreatment
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Funding
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0847049] Funding Source: National Science Foundation
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This mini review discusses several key technical issues associated with cellulosic ethanol production from woody biomass: energy consumption for woody biomass pretreatment, pretreatment energy efficiency, woody biomass pretreatment technologies, and quantification of woody biomass recalcitrance. Both total sugar yield and pretreatment energy efficiency, defined as the total sugar recovery divided by total energy consumption for pretreatment, should be used to evaluate the performance of a pretreatment process. A post-chemical pretreatment wood size-reduction approach was proposed to significantly reduce energy consumption. The review also emphasizes using a low liquid-to-wood ratio (L/W) to reduce thermal energy consumption for any thermochemical/physical pretreatment in addition to reducing pretreatment temperature.
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