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A method for suppressing hydrogen consumption in the process of hydrogen production by dry fermentation of food waste

A technology of food waste and dry fermentation, which is applied in fermentation and other directions, and can solve problems such as poor fluidity and difficult mass and heat transfer

Active Publication Date: 2021-06-25
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dry anaerobic fermentation hydrogen production system has its own problems of poor fluidity and difficult mass and heat transfer. It is not yet clear whether the use of chloroform can effectively suppress hydrogen consumption.

Method used

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  • A method for suppressing hydrogen consumption in the process of hydrogen production by dry fermentation of food waste
  • A method for suppressing hydrogen consumption in the process of hydrogen production by dry fermentation of food waste
  • A method for suppressing hydrogen consumption in the process of hydrogen production by dry fermentation of food waste

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Embodiment Construction

[0029] The hydrogen content was determined using gas chromatography.

[0030] The determination methods of hydrogen content, SCOD content, carbohydrate content, number of homoacetogenic bacteria, and VFAs content all adopt national standard methods, see Table 1.

[0031] Table 1 Analysis items and methods

[0032]

[0033] Example 1: Hydrogen production by dry fermentation under different TS mixing ratios between kitchen waste and hydrogen-producing sludge

[0034] Add dried kitchen waste, anaerobic hydrogen-producing sludge, and water into a 1L reaction bottle for mixing. See Table 2 for the specific addition amount. The solid content of each group is 20%, the reaction temperature is 37°C, the stirring speed is 60r / min, and the reaction time is 6d. During the fermentation process, the hydrogen content was measured, and the cumulative hydrogen production rate was calculated.

[0035] Table 2 Experimental design

[0036]

[0037] Note: "1:1 group" means that the TS ra...

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Abstract

The invention discloses a method for suppressing hydrogen consumption in the process of hydrogen production by dry fermentation of kitchen waste, and belongs to the technical fields of solid waste treatment and disposal, and environmental protection purification treatment. The method of the present invention is to feed the mixed gas of hydrogen and carbon dioxide into the anaerobic fermentation system during the process of mixing kitchen waste and anaerobic granular sludge to produce hydrogen by anaerobic fermentation, and measure the change of hydrogen content in the system , to determine the time of the most intense hydrogen consumption; when the hydrogen production process of the mixed anaerobic fermentation of kitchen waste and anaerobic granular sludge proceeds to the time of the most intense hydrogen consumption, adding chloroform to the reaction system improves the yield of the reaction system. hydrogen capacity.

Description

technical field [0001] The invention relates to a method for suppressing hydrogen consumption in the process of hydrogen production by dry fermentation of kitchen waste, and belongs to the technical fields of solid waste treatment and disposal, and environmental protection purification treatment. Background technique [0002] Food waste refers to food residues and wastes generated in catering activities such as households, catering services, or unit meals. Food waste contains a large amount of organic matter such as starch, plant cellulose, animal oil, protein, etc., which is prone to corruption and odor. If it is not strictly managed and disposed of, it will easily cause harm to the environment. [0003] At present, the treatment methods of food waste include aerobic composting, landfill, incineration, anaerobic fermentation and feed, among which anaerobic fermentation is considered to be one of the ideal ways to deal with food waste because it can realize energy recovery. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P3/00
CPCC12P3/00
Inventor 赵明星高常卉徐锦汤晴阮文权
Owner JIANGNAN UNIV