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Method for producing methane from sea tangle

A technology of kelp and biogas, which is applied in the direction of waste fuel, biological sludge treatment, fermentation, etc., can solve the problems of insufficient use and achieve the effect of promoting the marine ecological environment

Inactive Publication Date: 2009-07-08
INST OF OCEANOLOGY - CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Kelp is mainly used as raw materials for alginate industry, food and feed, but these uses are far from enough

Method used

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  • Method for producing methane from sea tangle

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Rinse the kelp (Laminaria japonica) with tap water to remove impurities such as salt and sediment;

[0028] (2) drying and pulverizing the kelp (Laminaria japonica) obtained in step (1), and pulverizing to a particle size of 100 to 200 mesh;

[0029] (3) 50 grams (45.3 grams of dry weight) of kelp (Laminaria japonica) of step (2) gained are dropped into in the fermenter, add inoculum cow dung 142.3 grams (45.3 grams of dry weight), at this moment, inoculum TS ( The weight ratio of total solid content) to kelp (Laminaria japonica) TS (total solid content) is 1:1;

[0030] (4) add fresh water in the fermentation device, and adjust the total solids content in the fermentation device to be 5.3%;

[0031] (5) Add a small amount of saturated lime water in the reaction device, so that the initial pH value of the fermentation broth is 7.0;

[0032] (6) Seal the fermentation device, place it in a constant temperature water bath, control the fermentation temperature at 35±3...

Embodiment 2

[0036] (1) Rinse the kelp (Laminaria japonica) with tap water to remove impurities such as salt and sediment;

[0037](2) drying and pulverizing the kelp (Laminaria japonica) obtained in step (1), and pulverizing to a particle size of 100 to 200 mesh;

[0038] (3) 25 grams (22.65 grams of dry weight) of sea-tangle (Laminaria japonica) of step (2) gained are dropped in the fermenter, add the inoculum pig manure of dry weight 5.66 grams, at this moment, inoculum TS (total solid content ) to Laminaria japonica (Laminaria japonica) TS (total solids content) in a weight ratio of 1:4;

[0039] (4) add fresh water in the fermentation device, and adjust the total solids content in the fermentation device to be 5.3%;

[0040] (5) Add a small amount of sodium bicarbonate in the reaction device, make the initial pH value of the fermentation broth be 6.5;

[0041] (6) Seal the fermentation device, place it in a constant temperature water bath, control the fermentation temperature at 35±...

Embodiment 3

[0045] (1) Rinse the kelp (Laminaria japonica) with tap water to remove impurities such as salt and sediment;

[0046] (2) drying and pulverizing the kelp (Laminaria japonica) obtained in step (1), and pulverizing to a particle size of 100 to 200 mesh;

[0047] (3) 50 grams (45.3 grams of dry weight) of sea-tangle (Laminaria japonica) of step (2) gained are dropped in the fermenter, add the inoculum human excrement that dry weight is 9.06 grams, at this moment, inoculum TS (total solids content) and the weight ratio of kelp (Laminaria japonica) TS (total solid content) is 1:5;

[0048] (4) add fresh water in the fermentation device, and adjust the total solids content in the fermentation device to be 9.9%;

[0049] (5) Add a small amount of ammoniacal liquor to the reaction device, so that the initial pH value of the fermentation broth is at 7.5;

[0050] (6) Seal the fermentation device, place it in a constant temperature water bath, control the fermentation temperature at ...

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Abstract

The present invention relates to a process using kelp as raw material to produce methane, including the following steps: (1) using water for rinsing the kelp; (2) performing drying and crushing processing to the obtained kelp of the step (1), crushing until the particle diameter is 100 - 200 mesh; (3) throwing the obtained kelp of the step (2) in a fermentation device, adding inoculum, wherein, the weight ratio of inoculum TS and kelp TS is 1: 1 - 5; (4) adding fresh water to adjust the total solid matter content in the fermentation device is 2.5% - 10%; (5 ) controlling the initial pH value of the mixture in the step (4) between 6.5 - 7.5; (6) sealing the fermentation device in a water bath at constant temperature, controlling the fermentation temperature at 35+-3 DEG C. The invention can acquire an energy source of methane at a very low cost access for providing a new application way of the kelp, so that the invention can greatly facilitate the development of seaweed cultivation, and further the seaweed cultivation industry can promote the improvement of the marine environment.

Description

technical field [0001] The invention relates to the field of energy, in particular to a method for producing biogas, more specifically a method for producing biogas by using kelp (Laminaria japonica) as a raw material. Background technique [0002] Biomass energy has always been an important energy source for human survival. It ranks fourth in the world's total energy consumption after coal, oil and natural gas, and occupies an important position in the entire energy system. Relevant experts estimate that biomass energy is very likely to become an integral part of the future sustainable energy system. By the middle of the next century, various biomass alternative fuels produced with new technologies will account for more than 40% of the world's total energy consumption. [0003] At present, the research and development of biomass energy technology has become one of the world's major hot topics, and has attracted the attention of governments and scientists around the world. ...

Claims

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Application Information

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IPC IPC(8): C12P5/02C02F11/04
CPCY02E50/343Y02E50/30
Inventor 秦松冯大伟赵玉山衣悦涛李富超姜鹏杨庆利
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI