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Method for preparing hydrogen by fermenting biologically pretreated straw

A biological pretreatment and straw technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, fermentation, etc., can solve the problems of fermentation hydrogen production difficulties, achieve the effect of simple and efficient process, solve the shortage of raw materials, and low cost

Inactive Publication Date: 2009-06-03
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to broaden the sources of raw materials for biological hydrogen production, overcome the difficulty of straw fiber raw material fermentation hydrogen production and the shortcomings of the existing acid and steam explosion pretreatment straw biological fermentation hydrogen production process, so as to provide an efficient and energy-saving biological pretreatment Method for producing hydrogen by straw fermentation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Using biologically pretreated sorghum straw and mesophilic hydrogen-producing sludge to produce hydrogen by fermentation, the steps are as follows:

[0024] (1) Biological pretreatment

[0025] First, in a solid-state fermentation reactor, a nutrient salt solution (1.6% ammonium sulfate, 0.6% magnesium sulfate heptahydrate, 0.3% potassium dihydrogen phosphate) was added to the sorghum straw at a solid-to-liquid ratio of 1 / 2.5, and stirred evenly.

[0026] Then, Trichoderma reesei Rut C30 was slanted with conventional PDA medium, and the seed medium was inoculated with Trichoderma reesei Rut C30, and cultured at 28°C for 4 days to obtain Trichoderma reesei Rut C30 seed liquid. The seed medium was 5% spent grains, 0.5% glucose, 0.8% ammonium sulfate, pH 6.2.

[0027] Finally, the above-mentioned Trichoderma reesei seed liquid was inoculated into a solid-state fermentation reactor with an inoculation amount of 10%, the fermentation temperature was 25° C., and the fermenta...

Embodiment 2

[0034] Using biologically pretreated corn stover and high-temperature hydrogen-producing sludge to ferment hydrogen to produce hydrogen, the steps are as follows:

[0035] (1) Biological pretreatment

[0036] First, in a solid-state fermentation reactor, a nutrient salt solution (1.6% ammonium sulfate, 0.6% magnesium sulfate heptahydrate, 0.3% potassium dihydrogen phosphate) was added to the corn stover at a solid-to-liquid ratio of 1 / 2.5, and stirred evenly.

[0037] Then, Trichoderma reesei Rut C30 was slanted with conventional PDA medium, and the seed medium was inoculated with Trichoderma reesei Rut C30, and cultured at 28°C for 4 days to obtain Trichoderma reesei Rut C30 seed liquid. The seed medium was 5% spent grains, 0.5% glucose, 0.8% ammonium sulfate, pH 6.2.

[0038] Finally, the above-mentioned Trichoderma reesei seed liquid was inoculated into a solid-state fermentation reactor with an inoculation amount of 10%, the fermentation temperature was 30° C., and the ferm...

Embodiment 3

[0045] Using biologically pretreated wheat straw and high-temperature hydrogen-producing sludge to ferment hydrogen to produce hydrogen, the steps are as follows:

[0046] (1) Biological pretreatment

[0047] First, in the solid-state fermentation reactor, a nutrient salt solution (1.6% ammonium sulfate, 0.6% magnesium sulfate heptahydrate, 0.3% potassium dihydrogen phosphate) was added to the wheat straw according to a solid-liquid ratio of 1 / 2.5, and stirred evenly.

[0048] Then, Trichoderma reesei Rut C30 was slanted with conventional PDA medium, and the seed medium was inoculated with Trichoderma reesei Rut C30, and cultured at 28°C for 4 days to obtain Trichoderma reesei RutC30. The seed medium was 5% spent grains, 0.5% glucose, 0.8% ammonium sulfate, pH 6.2.

[0049] Finally, the above-mentioned Trichoderma reesei seed liquid was inoculated into a solid-state fermentation reactor with an inoculation amount of 10%, the fermentation temperature was 32° C., and the fermen...

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Abstract

The invention provides a method for preparing hydrogen by fermenting biologically pretreated straw, wherein, trichoderma is utilized to carry out biological pretreatment on straw, the biologically pretreated straw is mixed with un-treated straw, and then the hydrogen is prepared by fermenting the mixed straw and hydrogen sludge. As the method utilizes the crop straw as the raw material, the resource of the straw is rich and the price of the straw is low, thereby effectively solving the problem concerning the resource of biological hydrogen preparation; meanwhile, the method also overcomes the defect that when conventional straw fiber material is used in the hydrogen preparation process, the efficiency is low; and the method has the advantages of simplicity, high efficiency, energy conservation, low cost, and the like, and can improve the hydrogen yield rate by 50 percent to 120 percent.

Description

technical field [0001] The invention relates to a method for preparing hydrogen, in particular to a method for preparing hydrogen by using biological pretreatment straws by fermentation. Background technique [0002] Hydrogen energy is a completely clean new energy and renewable energy. Hydrogen can be directly used as fuel, or can be directly converted into electrical energy by electrochemical reaction through fuel cells for power generation and transportation, etc. Hydrogen can also be used as an intermediate carrier for various energy sources. When hydrogen is used as a fuel for transportation, heat energy and power production, it has the characteristics of high efficiency and high efficiency, and the reaction products of hydrogen are water and heat, which is a real clean energy and sustainable energy. Sustainable use, environmental protection, reduction of air pollution and mitigation of the greenhouse effect will have a revolutionary impact. Due to the depletion of co...

Claims

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Application Information

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IPC IPC(8): C12P3/00C12R1/885
Inventor 刘春朝成喜雨王锋
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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