Resource utilization process for clean hemp biological degumming and waste thereof

Abstract

The invention provides a resource utilization process for clean hemp biological degumming and waste thereof. The process comprises: adopting a wax-like bacillus WM20091116 strain as a degumming strain; pre-wetting a hemp billet; performing field planting on degumming bacteria; performing heat insulation, moisture preservation, air change, nutrient solution replenishment, pH adjustment, differential temperature incubation and mechanical kneading; and rinsing the obtained product with clear water to obtain high-quality hemp fiber. Rinsing liquid is filtered through inorganic ceramic membrane, and filter residue solids, sawdust and rice husk are mixed, stacked and then used as a flower soilless culture matrix. Filtrate which is heated, concentrated, treated with ethanol, precipitated, subjected to pressure filtration and then dried can be used as coagulant in culture media. The filtrate combined with supernatant poured out can be prepared into wettable powder serving as biological pesticide. The process has the advantages of low energy consumption, no off-flavor during the treatment of hemp and high resource utilization degree, and the hemp fiber produced is high in long fiber content, high in fiber strength, low in loss and capable of meeting combing-spinning requirements well.

Description

technical field [0001] The invention relates to a clean biological degumming of hemp and a resource utilization process of its waste. Background technique [0002] Cannabis is a common cannabis species [Cannabis sativa L.] of the genus Moraceae, an annual herb, and the oldest bast fiber crop in the world. Hemp fiber is white or yellow, shiny, tough, and strong in corrosion resistance. The textile product is durable, comfortable to wear, moisture-wicking, cool and breathable, and has no itchy feeling commonly found in other linen fabrics. At the same time, it has a unique natural health care function, which can prevent ultraviolet radiation, dissipate sound waves, resist mold and bacteria, prevent corrosion and deodorize, moisturize skin and hair, and feel comfortable and refreshing. Therefore, hemp products are sold well in the international market due to their excellent performance, and have a broad market and development potential. However, the hemp fiber is embedded in ...

AI Technical Summary

Problems solved by technology

[0005] ①The lignin content of hemp itself is relatively high, and the lignin removal effect is not ideal. Although it has been pretreated with 2g / L sulfuric acid and secondary scouring, the lignin is still above 1.5%;

[0006] ②High energy consumption, serious environmental pollution, high concentration wastewater COD concentration above 10000mg / L;

[0007] ③ The quality of dry hemp is unstable, which affects the yield and quality;

[0008] ④Many processes and long time

[0009] 2. Biological degumming

The main problems are large water occupation, serious environmental pollution, long degumming time, unstable quality and low output

[0011] ②As early as 1920, Kayser et al. isolated 5 strains of bacteria capable of impregnating cannabis; practice has proved that microbial degumming can solve many problems existing in the chemical degumming process, improve the yield and quality of lean hemp, save water and energy, and reduce pollution. The enzyme production capacity of hemp is limited, and the joint action of chemical degumming method is still needed after the hemp biological degumming

[0016] ② Combining modern biological enzyme technology and supercritical fluid technology, degumming and debonding from water, under supercritical conditions, the structure of hemp will change, which is beneficial to the action of enzymes, but the cost is expensive and it is difficult to realize industrial production

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