期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 188, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.indcrop.2022.115569
关键词
Lignocellulosic biomass; Bioethanol; Pretreatments; Fermentation; Sustainable energy
资金
- start-up fund for the Construction of the Double First-class project [561119201]
- Lanzhou University, China
This review comprehensively discusses the second-generation bioethanol production from lignocellulosic biomass (LB), including suitable feedstock selection, different pretreatment methods, and the effect of engineered and immobilized microbial strains on biomass conversion to bioethanol.
The global energy demand and need for sustainable sources are expected to rise in the coming years. The second-generation bioethanol production from lignocellulosic biomass (LB) can sustain the energy demand. Thus, this review comprehensively discussed the suitable feedstock selection and different pretreatment progress (including mechanical/thermal, biological, chemical, and physical-chemical) for LB in recent years. The effect of engineered and immobilized microbial strains on biomass conversion to bioethanol is also elaborated. The sugarcane bagasse, switchgrass, cheery wood, and corn cobs (>40 % cellulose content) are considered to be potential and promising LB for bioethanol generation. The application of pretreatments (such as extrusion, steam explosion combined with mild acids, mild thermo-alkaline, green liquor, and surfactants combined with a steam explosion) increased sugar conversion and bioethanol production. The use of genetically engineered yeast along with microbial immobilization offered a full utilization of pentoses and hexoses that enhanced the bioethanol yield. Bioethanol production is comparatively effective at a laboratory scale. However, extensive research is still required to develop a cost-effective process and complete biomass utilization.
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