The hottest second-generation biofuels are expecte

2022-08-12
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Second generation biofuels are expected to become practical

recently, the University of Twente in the Netherlands announced that it has developed a new process method that can extract thermoplastic materials from agricultural and forestry wastes more efficiently and cheaply. The utilization of thermoplastic materials is limited to small parts to obtain biofuels, so that the large-scale production of biofuels is a step closer to reality

the new method mainly focuses on the production stage of the reaction between mixed products and hydrogen, improves the production efficiency through special processes, and reduces the cost by reducing the amount of hydrogen. It is applicable to the second generation biofuel production process using straw, trees and other agricultural and forestry wastes as raw materials

compared with the first generation biofuels produced with sugar and starch raw materials, the great advantage of the second generation biofuels that do not "compete with people for food" has attracted more and more attention

although grain ethanol has been stopped by many countries because of competing with grain for land and intensifying the problem of food shortage, scientists' eyes have not left the field of biofuels -

scientists' eyes have never left

biofuels is not a strange word. With the increasingly prominent problem of energy shortage, bioethanol as a representative biofuel is favored due to its simple and easy replacement of petroleum fuels. According to a research report released by McKinsey & Company in 2008, the export share of 202 to emerging countries will also be greatly increased. 0 years later, the second generation bioethanol (cellulosic ethanol) can replace 31million tons of gasoline, reducing China's oil imports by 10%

in recent years, with the successful development and promotion of corn ethanol, grain ethanol and other fuels, cheap and clean biofuels are considered to be an effective way to deal with the dual crisis of energy and environment. Although grain ethanol has been stopped by many countries because of competing with grain for land and intensifying the problem of food shortage, scientists have not left the field of biofuels, but turned to the more economically viable second-generation biofuels

most of the solar energy "captured" with plants is stored in cellulose such as straw, and cellulosic ethanol is the "energy solution" derived from the "waste" cellulose rich in nature and inedible -

mining the solar energy in cellulose

the second generation biofuels, in fact, is to change the source of biofuels from corn and other food crops. 2. Check the verticality of the front and rear directions under the pendulum rod, and change it to straw Agricultural wastes such as crop residues, and cash crops such as cassava and sweet sorghum. Cellulosic ethanol is the representative of the second generation biofuels. Although the name is slightly awkward, it is a feasible way to efficiently use natural resources to solve the energy crisis. Because the woody parts of plants are made of cellulose, most of the solar energy "captured" by plants is stored in cellulose such as straw. Cellulosic ethanol is the "energy solution" derived from the inedible "waste" cellulose, which is abundant in nature

but the reason why straw and wood can support crops is largely due to the compact and strong structure endowed by nature. Therefore, it is more difficult to turn these materials into ethanol than using corn and other grains as raw materials. At present, fermentation is one of the main methods to produce cellulosic ethanol. Its main principle is to accelerate the disintegration of cellulose in biomass and convert it into sugar through enzyme preparation, and then turn sugar into alcohol like wine making, and then distill it into absolute ethanol

it is understood that the renewable fuel standard issued by the U.S. Environmental Protection Agency in February this year points out that by 2022, the production of biofuels in the United States that will enhance the guarantee capacity of new materials will reach 36billion gallons, accounting for 1/4 of the national energy consumption, of which 16billion gallons will be based on fibronectin

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