Process for synchronously fermenting corn straw

Abstract

The invention discloses a process for synchronously fermenting corn straw. The process includes steps of collecting straw which is not aged and has the water content higher than 50%, hermetically storing the straw under low-temperature conditions for 3 months, then taking out the straw and smashing the straw until corn straw particles with the particle sizes of 2.5 cm are obtained; soaking the corn straw particles by 1.5% NaOH solution, then placing the corn straw particles in constant-temperature water bath and carrying out alkali extractive reaction; washing products obtained after the reaction is completely carried out by pure water until the pH (potential of hydrogen) of the products is neutral, drying the products, placing the products in reaction systems with the initial substrate concentration of 1 g / 100 mL, synchronously saccharifying and fermenting the products at the speed of 80 rmp per minute for 96 h, then centrifuging products to obtain hydrolysate and carrying out detoxification treatment on the hydrolysate. The process has the advantages that the waste straw of crops is utilized and fermented to produce alcohol, and accordingly fuel ethanol can be obtained; social benefits can be increased, and the problem of environmental pollution due to straw burning can be solved; process parameters are optimized, and accordingly the yield of the ethanol can be greatly increased.

Description

technical field [0001] The invention relates to the field of biomass energy preparation, in particular to a synchronous fermentation process of corn stalks. Background technique [0002] The energy crisis has quietly stepped into the sight of human beings decades ago. With the energy crisis in the middle of the last century, the energy reserves in the world are declining rapidly. Considerable effort has been put into this piece. Because energy is the guarantee for human beings to live on for a long time. Although oil reserves are large, they are limited after all. From the rising oil prices of oil exporting countries, it can be seen that the problem of energy shortage is getting closer and closer to us. Combustible ice and solar energy resources have always been the research hotspots of scientists from all over the world, but so far, the development is still very difficult, and the high cost of use has also discouraged many people. In recent decades, scientists have turne...

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Problems solved by technology

[0007] In order to solve the above problems, the present invention provides a synchronous fermentation process of corn stalks, which utilizes waste crop stalks to ferment alcohol to obtain fuel ethanol, which also increases social benefits and solves the problem of straw burning polluting the environment, and Through the optimization of process parameters, the yield of ethanol is greatly improved

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