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Method for producing hydrogen gas using steam cracked plant fermentation straw

A plant straw, steam explosion technology, applied in the method of using microorganisms, fermentation, hydrogen production and other directions, can solve the problems of lack of supporting technology, low gas production rate, secondary pollution, etc., achieve rich resources, overcome gas production rate and other problems Low, inexpensive effect

Inactive Publication Date: 2006-05-03
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

However, there are low gas production rates, which are difficult to meet production requirements; secondary pollution occurs, and there is a lack of supporting technologies
Due to the limited amount of organic wastewater resources, it cannot afford the main raw material for biological hydrogen production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, using steam-exploded corn stalks and Clostridium acetobutylicum liquid bacterial suspension fermentation to prepare hydrogen,

[0022] Proceed as follows:

[0023] (1) Roughly cut the corn stalk raw material to a length of 20-30mm, put it into a steam explosion tank, hold the pressure at 1.5Mpa for 10 minutes, and release it instantly under reduced pressure to obtain the steam exploded corn stalk raw material;

[0024] (2) In the semi-solid fermentation reactor, the above-mentioned steam-exploded corn stalk raw material, corn flour, beef peptone and water are proportioned in parts by weight: steam-exploded straw raw material: corn flour: beef peptone: water=30: 0.5: 0.01:100 for mixing, the pH value after mixing is 6.8, and then sterilize according to the conventional steam sterilization method;

[0025] (3) Use an anaerobic inoculation needle (or syringe) to inoculate the liquid bacterial suspension containing 1 gram of Clostridium acetobutylicum AS1.135 (C...

Embodiment 2

[0029] Example 2, using steam-exploded wheat straw and Rhodopseudomonas sphaeroides to ferment and prepare hydrogen, the steps are as follows:

[0030] (1) Roughly chop the steam-exploded wheat straw raw material to a length of 20-30mm, put it into a steam-exploded tank, pressurize at 1.5Mpa for 10 minutes, and release the steam-exploded wheat straw instantaneously to obtain the steam-exploded wheat straw raw material;

[0031] (2) In the semi-solid fermentation reactor, the above-mentioned steam-exploded wheat straw raw material, corn flour, beef peptone and water are proportioned in parts by weight: steam-exploded straw raw material: corn flour: beef peptone: water=40:0.2: 0.02:100 for mixing, the pH value after mixing is 7.0, and then sterilize according to the conventional steam sterilization method;

[0032] (3) Inoculate the liquid bacterial suspension of Rhodopseudomonas sphaeroldes (Rhopseudomonas sphaeroldes) containing 0.8 grams per liter of liquid bacterial suspensi...

Embodiment 3

[0036] Example 3, steam-exploded sorghum stalks, Clostridium acetobutylicum and Rhodopseudomonas sphaeroides mixed liquid bacterial suspension fermentation to prepare hydrogen, the steps are as follows:

[0037] (1) Roughly cut the sorghum straw raw material to a length of 20-30mm, then put it into a steam explosion tank, maintain pressure at 1.5-1.7Mpa for 8-10 minutes, and release it under pressure instantly to obtain the steam-exploded sorghum straw material;

[0038] (2) In the semi-solid fermentation reactor, the above-mentioned steam-exploded sorghum straw raw material, corn flour, beef peptone and water are proportioned in parts by weight: steam-exploded sorghum straw raw material: corn flour: beef peptone: water=20:0.8 : 0.005: 100 for mixing, the pH value after mixing is 7.5, and then sterilize according to the conventional steam sterilization method;

[0039] (3) with anaerobic inoculation needle (or syringe) with every liter of liquid bacterial suspension containing...

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PUM

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Abstract

The method for preparing hydrogen by steam-exploded plant straw fermentation in the present invention: In a semi-solid fermentation reactor, the raw material of steam-exploded straw, corn flour, beef peptone and water are uniformly mixed in proportion, and then sterilized, bacteria-suspended liquid inoculation and fermentation treatment to produce hydrogen; the method also includes collecting the produced hydrogen by gas-gathering method; because the raw material used in the present invention is steam-exploded plant straw, which has abundant resources and low price, it effectively solves the problem of The limited amount of organic wastewater resources cannot bear the shortage of main raw materials for biological hydrogen production. At the same time, it can also overcome the defects of low gas production rate and secondary pollution to the environment in the organic wastewater biological hydrogen production technology.

Description

field of invention [0001] The invention belongs to the field of hydrogen energy preparation methods, and in particular relates to a method for preparing hydrogen by fermentation of steam-exploded plant stalks. Background technique [0002] Energy and the environment are the most important topics in the sustainable development of human society. In modern times, the main energy sources used by humans have experienced the development of wood, coal, oil and natural gas, and nuclear energy. However, fossil fuels, which still account for the largest proportion, produce a large amount of harmful substances and cause serious environmental pollution. At the same time, with the rapid development of the world economy and population expansion, energy consumption increases exponentially, making fossil energy increasingly scarce. As a result, clean new energy sources have emerged, such as solar energy, wind energy, geothermal energy, and hydrogen energy. [0003] As a unique energy sour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P3/00C12P1/04C12N1/22C01B3/02
Inventor 陈洪章李佐虎
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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