분야
pptxObjective
Introduction
Upstream Process
Midstream Process
Downstream Process
Conclusion
Reference
Lignocellulosic ethanol production process, pretreatment, saccharification, fermentation, purification is divided into four steps.
The goal of the preprocessing step, after separating from the other ingredients, such as lignin and cellulose, which have the characteristics of hard and complex structures belonging to the upstream process, the microorganisms in the process of saccharification is to be used effectively. End preprocessing preprocessing using a mechanical or chemical pretreatment process by the saccharification process using acid hydrolysis using enzymes.
ethanol through a fermentation process in midstream prcoess adequate oxygen, pH, and temperature conditions using yeast to produce. In recent years, research has been actively conducted using production methods and using alcohol lignin contained hemicellulose in the lignocellulosic
In the last downstream process and remove the moisture generated in the fermentation process of alcohol distillation through azeotropic distillation, extractive distillation, the distillation process of these kinds are used. How to manufacture in order to overcome the disadvantages of simple distillation separation process difficult to concentrate with an absorbent such as zeolite, anhydrous ethanol has been studied.
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