Straw-crushing-pretreatment-enzymolysis 1- filtration-enzymolysis 2- filtration-inoculation-fermentation-primary distillation-distillation-ethanol. Seven tons of bagasse can produce one ton of 95% ethanol without sewage discharge. The cost per ton of ethanol is lower than that of corn, cassava and other raw materials 1000 yuan. In the past, it was made by hydrolysis and fermentation of sucrose, which cost a lot.
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Ethanol is alcohol, which is made by fermenting sugar. From the cost point of view, sugar is not directly used to make wine, and most sugar factories use bagasse extract and the leftovers after pressing sugar to ferment. After the fermentation materials are distilled, alcohol comes out. The first one contains a lot of methanol and can't be eaten (it will be blind). It is called industrial alcohol, and the last one is basically ethanol, which is sold as wine. The extraction is medical alcohol.
Ethanol is a commonly used chemical reagent, but what we usually see is a mixture of water and ethanol. If we want to do more accurate experiments, we must use anhydrous ethanol. First, 95% ethanol is added to the large container, and then the desiccant component is added. These desiccants can absorb water. After standing for a period of time, pour them into a hydrometer to measure the concentration. After reaching 100%, ethanol can be purified.
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