Method for hydrogen production from perishable waste stabilization

By enriching hydrogen-producing bacteria in kitchen waste and fermenting it in a UASB reactor, the problems of land occupation, environmental pollution and low resource utilization in kitchen waste treatment have been solved, and efficient and stable hydrogen production and clean electricity generation have been achieved.

CN115747260BActive Publication Date: 2025-12-16SHAANXI UNIV OF SCI & TECH
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Patent Information

Application Number
CN202211486190.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-24
Publication Date
2025-12-16
Estimated Expiration
2042-11-24

AI Technical Summary

Technical Problem

Existing technologies for treating food waste have problems such as large land occupation, serious environmental pollution, low resource utilization and high hydrogen production costs. In particular, there are few reports on the fermentation of food waste into hydrogen in a UASB reactor.

Method used

The method employs selective enrichment of hydrogen-producing bacteria in an acidophilic microenvironment. By inoculating the bacteria into homogenized perishable waste, hydrogen is produced through fermentation in the dark. The process utilizes activated sludge shaking culture, heat shock treatment, and pH adjustment to form a sludge-water mixture, which inhibits the growth of methanogens and promotes the enrichment and stable hydrogen production of the hydrogen-producing bacteria.

Benefits of technology

It achieves efficient and stable hydrogen production in the dark, and the hydrogen can be used as fuel for traditional fuel cells, generating pollution-free electricity with an efficiency of up to 50%. It also makes resource-efficient use of kitchen waste and reduces environmental pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of perishable garbage stable hydrogen production method, it is related to perishable garbage hydrogen production field, first active sludge is vibrated and cultivated, and pre-culture is obtained, then pre-culture is heat shock treatment, and treatment liquid is obtained, the pH of treatment liquid is adjusted to 3~4, finally after adding 2-bromoethane sulfonic acid sodium salt aqueous solution, mixed liquid is obtained, mixed liquid is vibrated and cultivated at 28~35 DEG C for 24~48h, and slurry mixture containing hydrogen production bacterial population is obtained;Under the condition of sterile anaerobic, perishable garbage is homogenized, and slurry is obtained, slurry and the slurry mixture of S1 are mixed according to the proportion of (10~30)g:100ml, and mixed material is obtained, the pH of mixed material is adjusted to 6~7, and the mixed material after treatment is obtained;Under the condition of sterile anaerobic, the mixed material after treatment is vibrated and treated at 30~40 DEG C, and stable hydrogen is generated in the mixed material after treatment.
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Citation Information

Patent Citations

  • Preparing method for municipal sludge and kitchen waste mixed anaerobic digestion hydrogen production seed sludge

    CN105112452A

  • Anaerobic hydrogen production method adopting vinegar residues

    CN109337933A