(GSSE) TU130 Week 5's Homework by Mr.Teepakorn Boonpharod
- What are the 4 types of feedstock for biofuels that we learned?
“1. Cereals, grains. sugar crops and other starches
2. Cellulosic materials
3. Oil-seed crops and oils
4. Organic waste”
2. For each type, give 2 specific examples.
“Corn and sugar cane are sugar crops. Switchgrass and willow are cellulosic materials. Rapeseed and coconut are oil-seed crops. Corn stover and paper pulp are organic waste”
3. Describe the general process of ethanol production.
“Firstly, add enzyme to the feedstock (corn, sugarcane, sugarbeet etc.). Then, the feedstock will change into sugar. After that, put some yeast or bacteria into the sugar. Then, you will get ethanol. Please make sure that the feedstock you use contains sugar.”
4. What makes the 2nd generation biofuels more attractive than the 1st generation?
“It is renewable while the first one is not. We can keep growing the source all the time. On the other hand, we cannot find more fossils if, the fossils are all gone. Moreover, it is safe to the environment too.”