生物乙醇生产合成气发酵的挑战:合成气组成

R. Mukti, M. Kresnowati, T. Setiadi
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引用次数: 0

摘要

如果发展中国家继续使用化石材料并对空气质量产生影响,那么它们面临的能源挑战将更加重大。木质纤维素生物质可以替代新的可再生能源来取代化石材料。印度尼西亚生产各种来源的木质纤维素生物质,可用于多种能源,如生物乙醇。混合途径是生产生物乙醇的途径之一。混合过程的第一阶段是通过气化过程将生物质转化为CO, CO2和H2(合成气)气体。然后利用微生物作为生物催化剂,通过发酵将合成气转化为生物乙醇。该生物乙醇生产线为wood - ljungdahli途径。影响合成气的因素是生物质类型(化学、物理和形态特性)和气化过程(气化炉类型、温度、气化剂和比例平衡(ER))。本文综述了实现合成气发酵所面临的挑战。特别是合成气作为发酵底物的组成变化。
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Challenges in Syngas Fermentation for Bioethanol Production: Syngas Composition
Energy challenges in developing countries are more significant if they continue to use fossil materials and have an impact on air quality. Lignocellulosic biomass can be an alternative to new renewable sources to replace fossil materials. Indonesia produces various sources of lignocellulosic biomass, which can be used in multiple energy sources such as bioethanol. The hybrid pathway is one of the routes for producing bioethanol. The first stage of the hybrid process is the conversion of biomass into CO, CO2, and H2 (syngas) gas through the gasification process. Then the syngas is converted into bioethanol through fermentation using microorganisms as biocatalysts. The bioethanol production line is the Wood-Ljungdahlii pathway. Factors that affect syngas are the type of biomass (chemical, physical, and morphological properties) and the gasification process (type of gasifier, temperature, gasification agent, and ratio equilibrium (ER)). This paper reviews the challenges in implementing syngas fermentation. In particular, variations in the composition of syngas as a substrate for fermentation.
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