Abstract
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 sacc
Natural polymer of carotenoids (Ⅰ ~ Ⅲ) phenylpropanolamine
Petroleum compounds have a uniform chemical structure. SO it is easy for the plastic composite.
In contrast, lignin is an irregular and complex structure. Chemical synthesis is difficult and was not being used.
Wood lignin, another important ingredient and it should switch to liquid fuel can increase overall yield.
However, th
Let's see the process flow of cellulosic ethanol which we are interested in(Figure 1). At the upstream, biomass harvest undergoes a pretreatment and cellulose hydrolysis by enzymes and then fermented to ethanol through the points. The initial contract for each course are as follows.
[Figure 1] bioethanol process
① pretreatment of raw material
To increase the effectiveness of fibrin d
lignocellulose)가 있으며 이는 포도당으로 전환이 가능한 셀룰로스(cellulose)를 포함하고 있기 때문이다. 셀룰로스는 지구상에서 가장 풍부한 자원으로서 포도당으로 가수분해 될 경우 많은 미생물에 의해 발효 및 생물 공학적 전환이 가능한 기질이기 때문에 대체에너지원으로서 주목받고 있다.
그래서
Lignocellulosic materials are renewable, largely unused, and abundantly available sources of raw materials for the production of fuel ethanol. Lignocellulosic materials can be obtained at low cost from a variety of resources, e.g. forest residues, municipal solid waste, waste paper, and crop residue resources. These materials contain sugars polymerized in form of cellulose and hemicellulose, whic