Method and apparatus for producing hydrogen and microorganism-immobilization pellets used in the same
US8227222B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jan 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/30
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The hydrogen-producing method of the an aspect of the present invention is a method for producing hydrogen in which hydrogen is produced from an organic matter using a microorganism, characterized by using pellets on which hydrogen-producing acid-resistant bacteria are entrapped and immobilized, producing hydrogen by bringing the pellets into contact and react with the organic matter in an environment of a pH of 4 to 6. The inventors of the present invention have obtained a finding that a hydrogen-producing bacteria are entrapped and immobilized, so that the optimum pH of the hydrogen-producing bacterium shifts to low range. The present invention is made based on the above finding and uses pellets on which the hydrogen-producing bacteria are entrapped and immobilized, so that the hydrogen-producing bacterium is activated at a low pH range of 4 to 6 to produce hydrogen. Therefore, the effects of contaminated bacteria that consume hydrogen are less, and the yield of hydrogen can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.