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Full recycling method for producing methane and biogas residue activated carbon by utilizing medicine herb residue

A technology of activated carbon and all resources, applied in the field of resource utilization of biomass waste, to achieve the effect of wide source of raw materials, good economic and environmental benefits, and low cost

Active Publication Date: 2016-02-24
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] At present, methane fermentation is carried out on traditional Chinese medicine residues, and the way of resource utilization of fermentation residues has not been reported yet. The present invention further makes fermentation residues into high value-added products, which has good economic and environmental benefits

Method used

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  • Full recycling method for producing methane and biogas residue activated carbon by utilizing medicine herb residue

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Embodiment 1

[0028] The method of the invention is used to utilize the medicinal residue of Sophora flavescens as resources to prepare methane and activated carbon. Specific steps are as follows:

[0029] (1) After air-drying the medicinal residues of Sophorae flavescens with a moisture content of 10% (mass ratio w / w) (its main composition is: 38.3% cellulose, 23.6% hemicellulose, 14.6% lignin), after pulverizing, After passing through a 20-mesh sieve, accurately weigh 33g of Sophora flavescens dregs under the sieve, add 2.4g NaOH to pretreat Sophora flavescens, that is, keep NaOH to account for 8% (g / g) of the dry weight of Sophora flavescens, and add a certain amount of Mix the purified water evenly, completely soak the residue of traditional Chinese medicine in the lye, and soak at room temperature for 24 hours;

[0030] (2) Mix the above-mentioned alkali-pretreated material with the domesticated anaerobic sludge at a ratio of 1:1 (total solid mass ratio) and pour it into a 500ml metha...

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Abstract

The invention provides a full recycling method for producing methane and biogas residue activated carbon by utilizing medicine herb residue, and belongs to the technical field of biomass waste resource utilization. The method comprises the steps of smashing the medicine herb residue, performing alkaline pretreatment, inoculating anaerobic sludge naturalized for a long time, then performing anaerobic methane fermentation, wherein the inoculation ratio is 1 to 1 (TS ratio). The methane-fermented solid residue is prepared into the biogas residue activated carbon by two-step-method pyrolysis under a high temperature pipe furnace nitrogen atmosphere. The method explored by the invention is a method for medicine herb residue gradient utilization; the biogas residue activated carbon is prepared by utilizing biogas residue difficult to degrade after the methane fermentation, so that full resource utilization of herb residue of lignocellulose is realized, not only is the cost of producing methane and the activated carbon saved, but also the discharge of the biogas residue is reduced, and good economic benefit and environmental benefit are obtained.

Description

technical field [0001] The invention relates to the technical field of resource utilization of biomass waste, in particular to a full resource utilization method for producing methane and biogas residue activated carbon by using traditional Chinese medicine residue. Background technique [0002] The dregs of traditional Chinese medicine mainly come from the production of Chinese patent medicines, the production of raw materials, the processing and processing of Chinese herbal medicines, and the production of light chemical products containing traditional Chinese medicines. The production of Chinese patent medicines brings the largest amount of dregs, accounting for about 70% of the total dregs . Traditional Chinese medicine residue is a typical industrial biomass, which has the characteristics of complex shape and high moisture content. According to reports, the current annual production of traditional Chinese medicine dregs in the country reaches 30 million tons. At prese...

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Application Information

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IPC IPC(8): C12P5/02C01B31/08
CPCC12P5/023Y02E50/30
Inventor 汪群慧于淼王晓娜赵娜娜常强吴川福
Owner UNIV OF SCI & TECH BEIJING
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