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Method for regulating morphology and structure of biochar

A technology of biochar and morphology, which is applied in the direction of biofuel, special form of dry distillation, petroleum industry, etc., to achieve the effect of saving energy and enriching the structure

Active Publication Date: 2020-07-14
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing technology still lacks methods for regulating the morphology of biochar

Method used

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  • Method for regulating morphology and structure of biochar
  • Method for regulating morphology and structure of biochar
  • Method for regulating morphology and structure of biochar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The banana peel is dried, broken into powder and sieved to obtain banana peel powder (80-200 mesh), which is set aside.

[0047] Take banana peel powder and HPMC and mix them in an open container; according to the solid-liquid ratio of 1g (the total weight of banana peel powder and HPMC, wherein HPMC is 0.2 of the weight of banana peel): 5ml, add 35% to the mixed powder Phosphoric acid solution, after stirring evenly, let it stand for 0.5-5h for structure penetration,

[0048] The open container was then put into an oven, and carbonized at 150 degrees Celsius for 24 hours under open conditions.

[0049] After the carbonization is completed, wash with distilled water and alkaline dilute solution until neutral to obtain the finished product, which is a uniform powdery biochar. figure 1 .

Embodiment 2

[0051] Compared with Example 1, the difference is that the phosphoric acid concentration is 40%, and the specific operations are as follows:

[0052] The banana peel is dried, broken into powder and sieved to obtain banana peel powder (80-200 mesh), which is set aside.

[0053] Take banana peel powder and HPMC and mix them in an open container; according to the solid-liquid ratio of 1g (the total weight of banana peel powder and HPMC, wherein, HPMC is 0.2 of the weight of banana peel): 5ml, add 40 % phosphoric acid solution, stir evenly and let stand for 0.5-5h for structure penetration,

[0054] The open container was then put into an oven, and carbonized at 150 degrees Celsius for 24 hours under open conditions.

[0055]After the carbonization is completed, wash with distilled water and alkaline dilute solution until neutral to obtain the finished product, which is a uniform powdery organism.

Embodiment 3

[0063] Banana peels are dried, crushed into powder and screened to obtain banana peel powder (80-200 mesh) for use.

[0064] Take banana peel powder and HPMC and mix them in an open container; according to the solid-liquid ratio of 1g (the total weight of banana peel powder and HPMC, where HPMC is 0.2 of the weight of banana peel): 15ml, add 80 % phosphoric acid solution, stir evenly and let stand for 0.5-5h for structure penetration,

[0065] The open container was then put into an oven, and carbonized at 150 degrees Celsius for 24 hours under open conditions.

[0066] After the carbonization is completed, wash with distilled water and alkaline dilute solution until neutral to obtain the finished product, which is sludge-like biochar. figure 2 .

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PUM

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Abstract

The invention belongs to the field of biochar preparation, and particularly discloses a method for regulating and controlling the morphology and structure of biochar, which comprises the following steps: carbonizing a raw material aqueous solution containing lignocellulose biomass, HPMC and phosphoric acid at 100-400 DEG C in an oxygen-containing atmosphere; and regulated and controlling the morphology of the carbonization product by controlling the concentration and / or solid-to-liquid ratio of phosphoric acid added into the raw material aqueous solution. In the raw material aqueous solution containing lignocellulose biomass, HPMC and phosphoric acid, by controlling the concentration of phosphoric acid in the raw material aqueous solution and further assisting in controlling the solid-to-liquid ratio on the basis, the morphology of charcoal obtained through carbonization in the oxygen-containing atmosphere can be regulated and controlled.

Description

technical field [0001] The invention belongs to the field of biochar preparation, and in particular relates to a method for regulated preparation of biochars with different morphology and structures in a low-temperature open environment. Background technique [0002] Biochar is a solid product produced by high temperature pyrolysis of biological organic materials (biomass) in an anoxic or anaerobic environment. It can be used not only as a high-quality energy source and soil improver, but also as a reducing agent, fertilizer slow-release carrier and carbon dioxide sequestration agent. It has been widely used in carbon sequestration and emission reduction, water purification, heavy metal adsorption and soil improvement. Provide solutions to hot issues of global concern such as climate change, environmental pollution and soil functional degradation. [0003] The production of biochar is an economical and feasible way to fix carbon dioxide. It not only fixes the absorbed carbo...

Claims

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Application Information

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IPC IPC(8): C10B53/02
CPCC10B53/02Y02E50/10
Inventor 周南李娟周智钟美娥
Owner HUNAN AGRICULTURAL UNIV
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