Method for producing short-chain volatile fatty acid by using tobacco waste

A technology for volatile fatty acids and tobacco waste, applied in the field of solid waste treatment, can solve the problems of high toxicity of chemical surfactants, secondary pollution, low biodegradability, etc., and achieve low operating costs, increased output and high income. Effect

Inactive Publication Date: 2017-06-06
CHINA TOBACCO GUANGXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the surfactants used to strengthen sludge hydrolysis were mostly chemical surfactants (such as sodium dodecylsulfonate, sodium dodecyl sulfate, etc.), chemical surfactants have high toxicity and low biodegradability to the environment Easy to cause secondary pollution and other defects
However, biosurfactants have various surface properties of chemical surfactants and are environmentally friendly. At present, there are few reports on the use of biosurfactants to increase the rate of anaerobic hydrolysis of tobacco waste to increase acid production.

Method used

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  • Method for producing short-chain volatile fatty acid by using tobacco waste

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Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 A method for producing short-chain volatile fatty acids from tobacco waste, specifically comprising the following steps: (1) pre-treating tobacco waste: removing substances unfavorable for fermentation in tobacco waste. Then pulverize it to below 0.3 centimeters with a pulverizer, then mix the pulverized tobacco waste with an appropriate amount of distilled water to control the solid content rate to 15%, VS (volatile solids) / TS (total solids)=95.3%; complete tobacco waste object pretreatment.

[0034] (2) Inoculation sludge: The remaining sludge was taken from the secondary sediment discharge of Nanning No. 1 Sewage Treatment Plant. After testing, the microorganisms in the remaining sludge were mainly hydrolytic and fermentative microorganisms; specifically, they were obligate anaerobic Clostridium Bacteroides, Bacteroides, Butyvibrio, Bifidobacterium. Perform anaerobic culture on the remaining sludge for one month, the temperature of the anaerobic cultur...

Embodiment 2

[0038] A method for producing short-chain volatile fatty acids from tobacco waste, specifically comprising the following steps:

[0039](1) Tobacco waste pretreatment: remove substances that are not conducive to fermentation in tobacco waste. Then pulverize it to below 0.3 centimeters with a pulverizer, then mix the pulverized tobacco waste with an appropriate amount of distilled water to control the solid content rate to 15%, VS (volatile solids) / TS (total solids)=95.3%; complete tobacco waste object pretreatment.

[0040] (2) Inoculation sludge: The remaining sludge was taken from the secondary sediment discharge of Nanning No. 1 Sewage Treatment Plant. After testing, the microorganisms in the remaining sludge were mainly hydrolytic and fermentative microorganisms; specifically, they were obligate anaerobic Clostridium Bacteroides, Bacteroides, Butyvibrio, Bifidobacterium, etc. Perform anaerobic culture on the remaining sludge for one month, the temperature of the anaerobi...

Embodiment 3

[0044] (1) Tobacco waste pretreatment: remove substances that are not conducive to fermentation in tobacco waste. Then pulverize it to below 0.3 centimeters with a pulverizer, then mix the pulverized tobacco waste with an appropriate amount of distilled water to control the solid content rate to 15%, VS (volatile solids) / TS (total solids)=95.3%; complete tobacco waste object pretreatment.

[0045] (2) Inoculation sludge: The remaining sludge was taken from the secondary sediment discharge of Nanning No. 1 Sewage Treatment Plant. After testing, the microorganisms in the remaining sludge were mainly hydrolytic and fermentative microorganisms; specifically, they were obligate anaerobic Clostridium Bacteroides, Bacteroides, Butyvibrio, Bifidobacterium, etc. Perform anaerobic culture on the remaining sludge for one month, the temperature of the anaerobic culture is 35-45°C, the pH is controlled at 7.0±0.5, the anaerobic stirring speed is 100-130r / min, and nitrogen and carbon sourc...

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Abstract

The invention discloses a method for producing short-chain volatile fatty acid by using tobacco waste. The method concretely comprises the following steps: stirring and evenly mixing the tobacco waste used as a fermentation substrate with sludge used as an inoculant so as to obtain a fermentation substrate; adding alkyl polyglycoside into the fermentation substrate, and carrying out anaerobic fermentation under the condition of stirring. The method can realize reduction, resource and harmless treatment, and has the advantages of being low in running cost, high in earnings, high in yield of the short-chain volatile fatty acid, and the like.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a method for producing short-chain volatile fatty acids by utilizing tobacco waste, and also relates to the short-chain volatile fatty acids produced according to the aforementioned method. Background technique [0002] Tobacco waste is a large by-product of cigarette production, rich in various organic components and secondary metabolites. This kind of waste has not been used reasonably, which will cause a certain burden on the environment. my country's tobacco planting area and annual output both rank first in the world. In the process of tobacco planting and production, a large number of low-grade tobacco leaves and tobacco stems are discarded, accounting for about 25% of the total tobacco output. If it is not handled properly, it will seriously affect the urban environment and even threaten human health. Therefore, the treatment and disposal of tobacco waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P39/00C12P7/54C12P7/52C12P7/40
Inventor 李小兰徐雪芹黄善松贾海江刘鸿蒋宏霖周芸潘玉灵周肇峰
Owner CHINA TOBACCO GUANGXI IND
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