Pretreatment method for improving biodegradation effect of Chinese locust

Abstract

The invention discloses a pretreatment method for improving the biodegradation effect of guaiacyl-syringyl lignin forestry and agricultural residues, relates to a pretreatment method for Chinese locust, and aims to solve the problems of high content of the guaiacyl-syringyl lignin and difficult biodegradation of the Chinese locust. The method comprises the following steps: 1, grinding the Chinese locust and passing through a sieve with 20 meshes to obtain Chinese locust debris; 2, adding an inorganic salt into the Chinese locust debris for treating; 3, filtering out an inorganic salt solution, washing with distilled water, performing suction filtration, then adjusting pH value, and drying to constant weight to complete the pretreatment. According to the method disclosed by the invention, through the chemical pretreatment method, through the pretreatment with the inorganic salt, the smooth and compact structure of the surface of natural lignocellulose becomes rough and irregular, surface fiber bundles are destroyed, and raw materials become loose and porous, so that subsequent biological treatment enters the inside more easily, the contact area and sites of materials and enzyme are increased, and enzyme load capacity is increased, thereby improving the biodegradation effect. The method disclosed by the invention is used in the field of natural lignocellulose degradation.

Description

technical field [0001] The invention relates to a method for pretreatment of locust wood. Background technique [0002] By the end of the 20th century, renewable energy sources accounted for 13% of the world's total energy consumption, a large part of which was based on biomass materials. The application of lignin biomass in various countries in the world has been used on a certain scale. In Canada, which is rich in wood resources, the energy generated by biomass materials accounts for 5% of the total energy of residents and 17% of the entire industrial consumption. Lignocellulose is a cheap and abundant renewable resource, and its full utilization will help to improve the current problems of resource shortage and environmental pollution, and is of great significance to the sustainable development of society. [0003] Sophora japonica is a common tree species that is widely distributed in China, especially in the north. It is also widely planted in Guangdong, Taiwan, Gansu,...

AI Technical Summary

Problems solved by technology

Existing studies have shown that chemical pretreatment can improve the enzyme activity in the process of microbial degradation of natural lignocellulose, but most of them are strong acid and strong alkali, which has high treatment costs and produces a large number of by-products, causing secondary pollution to the environment and other problems.

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