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Method for preparing alcohol and biochar from traditional Chinese medicine residues in gradient mode

A technology of traditional Chinese medicine dregs and biochar, applied in the field of resource utilization of biomass waste, to achieve the effect of solving the problem of high added value utilization, good economic benefits, and saving fermentation costs

Active Publication Date: 2016-04-20
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] At present, the ethanol fermentation of traditional Chinese medicine residues, and the cascade method of resource utilization of fermentation residues have not been reported. The further utilization of fermentation residues can solve the problem of high value-added utilization of biomass energy, which has good economic benefits and huge social benefits.

Method used

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Embodiment 1

[0024] The method of the invention is used to carry out cascade utilization of Hypericum perforatum dregs to prepare ethanol and biochar. Specific steps are as follows:

[0025] (1) Grind Hypericum perforatum dregs with a moisture content of 8.8% to 40-mesh powder, weigh 10.0 g of Hypericum perforatum dregs, add 100 mL of 2.0% sodium hydroxide solution to the dregs, place in a sterilized Pot, soak at 120°C and 121MPa for 10min, cool to room temperature after pretreatment;

[0026] (2) Add KH at 1.5g / L (total fermentation volume) 2 PO 4 , according to the carbon-nitrogen ratio is 20:1 to add Danshen medicine dregs;

[0027] (3) adjusting the slurry pH in step (2) to be 5.0;

[0028] (4) Add Angel yeast at 0.005 g per gram of Hypericum perforatum dregs (dry weight) to the slurry obtained above, add cellulase at 100 enzyme activity units per gram of Hypericum perforatum dregs, and isolate the air at 37°C Standing and fermenting for 72h, the yield of ethanol obtained is 6.0g / ...

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Abstract

The invention provides a method for preparing alcohol and biochar from traditional Chinese medicine residues in a gradient mode and belongs to the technical field of biomass waste resource utilization. According to the method, traditional Chinese medicine residue dilute alkali is preprocessed, matter rich in nitrogen is added for alcohol fermentation, alcohol fermentation solid residues are subjected to pyrolysis in a high-temperature tube furnace at the nitrogen atmosphere, and biochar is prepared. The method for using the traditional Chinese medicine residues in the gradient mode is implemented, the alcohol yield of lignocellulose traditional Chinese medicine residues can be increased by one to three times through alcohol fermentation, the methylene blue adsorption rate is increased by 20-30%, and cellulose and lignin can be used more effectively. Resource utilization of a lignocellulose raw material is achieved, the method has important significance in widening the solid waste application range and developing new sources of alcohol and biochar, alcohol fermentation cost is reduced, the problem about biomass energy high-additional-value utilization is solved, and the method has good economic benefits and huge social benefits.

Description

technical field [0001] The invention relates to the technical field of utilization of biomass waste resources, in particular to a method for preparing ethanol and biochar by cascading the use of traditional Chinese medicine residues. Background technique [0002] Traditional Chinese medicine dregs are wastes produced during the preparation of traditional Chinese medicines. It is a typical industrial biomass. It is usually the waste after industrial production such as decoction and fermentation. It is a kind of biomass with complex morphology and high moisture content. At present, there are 2,000 Chinese medicine companies in my country, and the annual discharge of plant residues in China is as high as 700,000 tons. Medicinal dregs are generally wet materials, which are very perishable and have a bad smell. The traditional methods for the treatment of traditional Chinese medicine residues are incineration, landfill, and stacking in fixed areas. These treatment methods not on...

Claims

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Application Information

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IPC IPC(8): C12P7/10C12P19/14C01B31/02
CPCY02E50/10
Inventor 马鸿志王睿周全张凤英王晓娜汪群慧
Owner UNIV OF SCI & TECH BEIJING
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