Maize stalk degradation and acidification species inoculant and manufacture method thereof

Abstract

The invention discloses maize stalk degradation and acidification species inoculant and a manufacture method thereof. Multiple species inoculant for degrading maize stalks comprises the following active components: aspergillus, trichoderma, penicillium and phanerochaete chrysosporium. The species inoculant breaks through the limitation that single fungus and clastic enzyme thereof cannot rapidly and efficiently decompose natural cellulose, and provides a key pretreatment technology for natural cellulose methane fermentation. By treating maize stalks through the method for 15 days continuously,the degradation rate of cellulose of the maize stalks reaches 42.1 percent, the degradation rate of hemicelluloses reaches 46.7 percent, the degradation rate of lignin reaches 28.5 percent, and the method has a wide application prospect when being applied to the field of methane preparation by taking cellulose and lignin, such as maize stalks, as raw materials.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a corn stalk-degrading acidifying bacterial agent and a preparation method thereof. Background technique [0002] Crop straw is the fourth largest energy source in the world after coal, oil, and natural gas, and is a very important renewable biomass resource. my country is a large agricultural country with extremely rich crop straw resources. The annual output of straw in the world is as much as 3 billion tons, while the annual output of crop straw in my country has exceeded 800 million tons. Most of the straw produced in our country is burned on the spot or used as living fuel, which not only pollutes the environment, but also wastes resources, and the straw has not been effectively utilized. In addition, the high temperature generated by incineration will also kill microorganisms in the soil, which is not conducive to the survival of soil microorganisms, and will also cause soil c...

AI Technical Summary

Problems solved by technology

However, the currently used acid-base pretreatment methods are mainly strong acid or strong alkali pretreatment, such as hydrochloric acid, sulfuric acid, sodium hydroxide, potassium hydroxide, this pretreatment method generally has the problem of equipment corrosion, and requires a large amount of water for the pretreatment. The processed raw materials need to be cleaned or need a large amount of acid and alkali to neutralize

When washing with water, soluble organic matter will be lost, and when neutralized with acid and alkali, a large amount of sodium ions and chloride ions will be produced, which may not only inhibit anaerobic fermentation, but also cause environmental pollution, and affect the biogas residue Subsequent use

The above problems have seriously affected the application of acid-base pretreatment in large-scale straw biogas projects. Therefore, the development of a new method for straw raw material pretreatment is one of the keys to the promotion of large-scale straw biogas projects.