Low-temperature straw biogas fermentation promoter and preparation method thereof

A biogas fermentation and accelerator technology, applied in fermentation, waste fuel, etc., can solve the problems of insufficient gas production capacity, achieve the effects of improving gas production, improving the nutritional environment, and promoting hydrolysis and acidification

Inactive Publication Date: 2014-09-10
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of insufficient gas production capacity of the existing straw biogas technology under low temperature conditions, and provide a low-temperature straw biogas fermentation accelerator with simple operation, low overall cost, fast start-up speed of low-temperature biogas, and strong applicability. It can accelerate the hydrolysis and fermentation of straw, enhance the activity of low-temperature biogas bacteria, and improve the efficiency of biogas production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: FeCl is taken by weight 2 4H 2 O 10 parts, NiCl 2 ·6H 2 O 2 parts, CoCl 2 ·6H 2 1 part of O was dissolved in water to make a saturated solution; then 67 parts by weight of wheat bran were added and fully mixed; finally, 20 parts by weight of cellulase was weighed and completely mixed to obtain a low-temperature straw biogas fermentation accelerator.

[0011] Select crop stalks as fermentation raw materials in a 1L fermentation tank, the total solid content of the fermentation feed liquid is 10%, and insert the low-temperature acclimated activated sludge with a solid content of 10% (W / W), press the fermentation liquid in the fermentation tank Add the above-mentioned low-temperature straw biogas fermentation accelerator to 0.6‰ of the volume, and cultivate in a 15°C incubator. After 30 days, the total amount of gas produced reaches 7230mL.

Embodiment 2

[0012] Embodiment 2: FeCl is taken by weight 2 4H 2 O 10 parts, NiCl 2 ·6H 2 3 parts of O, CoCl 2 ·6H 2 O 2 parts, dissolved in water to make a saturated solution; then add 55 parts by weight of wheat bran and fully mix; finally weigh 30 parts by weight of cellulase and mix completely to obtain a low-temperature straw biogas fermentation accelerator.

[0013] Select crop stalks as fermentation raw materials in a 1L fermentation tank, the total solid content of the fermentation feed liquid is 10%, and insert the low-temperature acclimated activated sludge with a solid content of 10% (W / W), press the fermentation liquid in the fermentation tank Add the above-mentioned low-temperature straw biogas fermentation accelerator to 0.4‰ of the volume, cultivate in a 15°C incubator, and the total gas production will reach 6980mL after 30 days.

Embodiment 3

[0014] Embodiment 3: FeCl is taken by weight 2 4H 2 O 10 parts, NiCl 2 ·6H 2 O 4 parts, CoCl 2 ·6H 2 2 parts of O, dissolved in water to make a saturated solution; then 44 parts by weight of wheat bran were added and fully mixed; finally, 40 parts by weight of cellulase was weighed and completely mixed to obtain a low-temperature straw biogas fermentation accelerator.

[0015] Select crop stalks as fermentation raw materials in a 1L fermentation tank, the total solid content of the fermentation feed liquid is 10%, and insert the low-temperature acclimated activated sludge with a solid content of 10% (W / W), press the fermentation liquid in the fermentation tank Add the above-mentioned low-temperature straw biogas fermentation accelerator to 0.3‰ of the volume, cultivate in a 15°C incubator, and the total amount of gas produced will reach 7550mL after 30 days.

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Abstract

The invention discloses a low-temperature straw biogas fermentation promoter and a preparation method thereof, and relates to the technical field of agricultural production. The promoter is prepared from the following raw materials in parts by weight: 10 parts of FeCl2.4H2O, 2-4 parts of NiCl2.6H2O, 1-2 parts of CoCl2.6H2O, 44-67 parts of wheat bran and 20-40 parts of cellulose in dissolving and even mixing manners. The low-temperature straw biogas fermentation promoter has the advantages of being simple in ingredient, low in cost, easy to prepare, flexible to use, easy to regulate and control and the like, low-temperature inhibition is relieved by adding the promoter, and efficient gas production of the straw biogas is achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a low-temperature straw biogas fermentation accelerator and a preparation method thereof. Background technique [0002] Straw fermentation biogas production technology mainly uses straw instead of poultry manure as the main fermentation raw material for anaerobic digestion to produce biogas. The anaerobic digestion reaction of straw is a biochemical transformation process, which can generally be divided into three stages: the first stage is the hydrolysis stage, and anaerobic and facultative anaerobic microorganisms hydrolyze the cellulose in the straw into small molecular monomers, And further converted into propionic acid, acetic acid, butyric acid, ethanol, etc.; the second stage is the acid production stage, the hydrogen-producing acetogenic bacteria group uses the organic acid produced in the first stage to oxidize and decompose into acetic acid a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02
CPCY02E50/343Y02E50/30
Inventor 鄢贵龙
Owner HUAIYIN TEACHERS COLLEGE
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