Method and device for producing hydrogen
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United States of America Patent
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Sep 30, 2014
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May 5, 2009
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May 12, 2008
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Abstract
In a step of contacting an organic material including formic acid ions and a carbon source other than the formic acid ions with a microorganism having a formate dehydrogenase gene and a hydrogenase gene under an anaerobic condition, concentration of the formic acid ions in the organic material is set to be not less than 0.01 mol/L and not more than 0.5 mol/L, and concentration of the carbon source is set to not less than 0.1 mmol/L and not more than 200 mmol/L. This allows continuously producing hydrogen for a long time, without dropping the ability of the microorganism to produce hydrogen.
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