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Method for producing marsh gas by using entermorpha prolifera as raw material

A biogas and prolifera technology, applied in the energy field, can solve problems such as insufficient use, and achieve the effects of preventing marine red tides, simplifying the process and reducing marine red tides

Inactive Publication Date: 2009-04-29
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents CN93110816.0, CN99802553.4, CN01103983.3, CN01817788.3, ​​CN200510040013.2, etc. disclose a biogas preparation method using industrial and agricultural production and domestic organic waste such as garbage, manure, straw, etc. The method of preparing biogas from seaweed as fermentation raw material is still blank
At present, Enteromorpha is mainly used for drying, crushing and processing into feed, and it can also be used as food and medicine, but these uses are far from enough

Method used

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  • Method for producing marsh gas by using entermorpha prolifera as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Rinse Enteromorpha with tap water to remove impurities such as salt and silt;

[0025] (2) Add a certain amount of water to the Enteromorpha obtained in step (1), and process it with a high-speed tissue grinder for 3 minutes to make the Enteromorpha particle size reach 0.5-2 mm.

[0026] (3) 100 grams (9.76 grams of dry weight) of Enteromorpha (dry weight 9.76 grams) that step (2) gained is dropped into in the fermenter, add inoculum cow dung 61.3 grams (9.76 grams of dry weight), at this moment, inoculum TS (total solid content ) and the weight ratio of Enteromorpha TS (total solid content) is 1:1;

[0027] (4) add fresh water in the fermentation device, and adjust the total solids content in the fermentation device to be 2.58%;

[0028] (5) Add a small amount of saturated lime water in the reaction device, make the initial pH value of the fermentation broth at 6.5;

[0029] (6) Seal the fermentation device, place it in a constant temperature water bath, control ...

Embodiment 2

[0033] (1) Rinse Enteromorpha with tap water to remove impurities such as salt and silt;

[0034] (2) Add a certain amount of water to the Enteromorpha obtained in step (1), and process it with a high-speed tissue grinder for 5 minutes to make the Enteromorpha particle size reach 0.5-2mm.

[0035] (3) 300 grams of Enteromorpha (dry weight 29.28 grams) of step (2) gained is dropped in the fermenter, add the inoculum pig manure of dry weight 9.76 grams, at this moment, inoculum TS (total solid content) and Enteromorpha The weight ratio of moss TS (total solid content) is 1:3;

[0036] (4) Add fresh water in the fermentation device, and adjust the total solids content in the fermentation device to be 5.16%;

[0037] (5) Add a small amount of plant ash in the reaction device to make the initial pH value of the fermentation broth at 7.5;

[0038] (6) Seal the fermentation device, place it in a constant temperature water bath, control the fermentation temperature at 35±3°C, and st...

Embodiment 3

[0042] (1) Rinse Enteromorpha with tap water to remove impurities such as salt and silt;

[0043] (2) Add a certain amount of water to the Enteromorpha obtained in step (1), and process it with a high-speed tissue grinder for 5 minutes to make the Enteromorpha particle size reach 0.5-2mm.

[0044] (3) 400 grams of Enteromorpha (dry weight 39.04 grams) that step (2) gained is dropped into in the fermenter, add the inoculum human excrement of dry weight 9.76 grams, at this moment, inoculum TS (total solid content) and Enteromorpha The weight ratio of moss TS (total solid content) is 1:5;

[0045] (4) Add fresh water in the fermentation device, and adjust the total solids content in the fermentation device to be 9.98%;

[0046] (5) Adding a small amount of ammoniacal liquor to the reaction device to make the initial pH value of the fermentation broth at 7.0;

[0047] (6) Seal the fermentation device, place it in a constant temperature water bath, control the fermentation temperat...

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Abstract

The invention relates to the field of energy, in particular to a method for producing biogas by taking Entermorpha as a material. The method comprises the following steps: (1) the Entermorpha is rinsed by water; (2) the Entermorpha obtained in step(1) is crushed until the grain size of the Entermorpha is between 0.5 and 2mm; (3) the Entermorpha obtained in step(2) is placed into a fermentation device and added with inoculum, and the weight ratio of the inoculum TS(total solid content) to the Entermorpha TS(total solid content) is between 1 to1 and 1 to 5; (4) the fermentation device is added with fresh water, and the total solid content in the fermentation device is adjusted to between 2.5 and 10 percent; (5) alkali is added into the fermentation device, and the initial pH value of the mixture obtained in step(4) is controlled to between 6.5 and 7.5; and (6) the fermentation device is sealed and placed in the thermostatic water bath, and the fermentation temperature is controlled to between 32 and 38 DEG C. The method has the advantages of realizing the resource utilization of the Entermorpha, having simple process and easy operation, improving the marine environment and producing the energy product of biogas.

Description

technical field [0001] The invention relates to the field of energy, in particular to a method for producing biogas, and more specifically to a method for producing biogas with Enteromorpha as raw material. Background technique [0002] Biogas is a renewable and clean energy source. Since this gas was first discovered in swamps, it is called biogas. Biogas is a combustible gas produced by organic matter under the conditions of isolation from air and certain temperature, humidity, pH, etc., through the action of biogas bacteria. Biogas is a mixed gas, the main component is methane, and the rest is carbon dioxide, oxygen, nitrogen and hydrogen sulfide. The content of methane is about 55%-70%, and the content of carbon dioxide is about 30%-45%. The calorific value of methane is 35.9MJ / m 3 The low calorific value of biogas is 20--25MJ / m3. When it is mixed with air, it shows a blue flame and the temperature is as high as 1400°C. It can generate a lot of heat. The calorific valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C02F11/04
CPCY02E50/343Y02E50/30Y02P20/133
Inventor 冯大伟秦松李富超姜鹏陈华新杨庆利
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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