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Preparation method of high-adsorption-performance biochar fertilizer

A biochar, high adsorption technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of less microporous structure, small specific surface area, increased cost and labor, etc., to increase micropores, increase specific surface area, The effect of improving specific surface area and oxygen-containing group content

Inactive Publication Date: 2017-11-03
黄名义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its raw materials and preparation methods, traditional biochar has less microporous structure and smaller specific surface area, and microporous structure and specific surface area are one of the factors that determine its main function; moreover, traditional biochar The contents of nitrogen, phosphorus, potassium and other plant nutrients and other trace elements are extremely low, and other fertilizers are often needed to enhance fertilizer efficiency during application, resulting in increased costs and labor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of biochar fertilizer with high adsorption performance, the steps are as follows:

[0036] (1) Selection and preparation of biomass raw materials: Sun-dried or dried corn stalks, crushed into powder, and mixed evenly, wherein the water content of corn stalks was controlled below 8%;

[0037] (2) Selection and preparation of human and animal manure: dry or dry human and animal manure, pulverize it into powder, and mix well. Among them, the water content of human and animal manure should be controlled below 16%;

[0038] (3) Weighing and mixing: Weigh and mix the corn stalks, human and animal manure and the catalyst after the treatment in steps (1) and (2) at a mass ratio of 3:2:1, wherein the catalyst is obtained after burning cypress After the plant ash was dissolved in water, the pH was adjusted to 8.2 with ammonia water, and then filtered with a 0.45 μm filter membrane, and the obtained substance was freeze-dried;

[0039](4) Impregnation treatme...

Embodiment 2

[0043] A preparation method of biochar fertilizer with high adsorption performance, the steps are as follows:

[0044] (1) Selection and preparation of biomass raw materials: Sun-dry or dry the wood chips, crush them into powder, and mix them evenly. Among them, the water content of the wood chips is controlled below 6%;

[0045] (2) Selection and preparation of human and animal manure: dry or dry human and animal manure, pulverize it into powder, and mix it evenly. Among them, the water content of human and animal manure should be controlled below 15%;

[0046] (3) Weighing and mixing: Weigh and mix the sawdust, human and animal manure and catalyst after steps (1) and (2) at a mass ratio of 3:2:1, where the catalyst is plant ash obtained after burning cypress After dissolving in water, adjust the pH to 8.2 with ammonia water, then filter, and use a 0.45 μm filter membrane to filter, and freeze-dry the obtained substance;

[0047] (4) Impregnation treatment: Weigh 100g of the...

Embodiment 3

[0051] A preparation method of biochar fertilizer with high adsorption performance, the steps are as follows:

[0052] (1) Selection and preparation of biomass raw materials: sun-dried or dried wheat straw, crushed into powder, and mixed evenly, wherein the water content of wheat straw was controlled below 9%;

[0053] (2) Selection and preparation of human and animal manure: dry or dry human and animal manure, pulverize it into powder, and mix well. Among them, the water content of human and animal manure should be controlled below 18%;

[0054] (3) Weighing and mixing: Weigh and mix the wheat straw, human and animal manure and the catalyst after the treatment in steps (1) and (2) at a mass ratio of 3:2:1, wherein the catalyst is obtained after burning cypress After the plant ash was dissolved in water, the pH was adjusted to 8.2 with ammonia water, and then filtered with a 0.45 μm filter membrane, and the obtained substance was freeze-dried;

[0055] (4) Impregnation treatm...

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PUM

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Abstract

The invention discloses a preparation method of a high-adsorption-performance biochar fertilizer. The preparation method comprises: (1) respectively drying a biomass raw material and human-livestock manure or baking a biomass raw material and human-livestock manure, and crushing into powder so as to be spare; (2) weighing and mixing the treated biomass raw material, the treated human-livestock manure and a catalyst according to a mass ratio of 3:2:1; (3) carrying out immersion treatment; (4) carrying out dehydration-oxygen discharging; and (5) carrying out cracking carbonization. According to the present invention, the method is simple; the prepared biochar fertilizer has strong heavy metal ion adsorption capacity and high fertilizer efficiency; and after the high-adsorption-performance biochar fertilizer is applied in the soil, the soil structure can be improved, and the high-adsorption-performance biochar fertilizer can act as the fertilizer so as to well meet the growth needs of crops.

Description

technical field [0001] The invention relates to the field of high-value comprehensive utilization of biomass resources, in particular to a preparation method of biochar fertilizer with high adsorption performance. Background technique [0002] No matter in the fields of food crops or commercial crops, fertilization has been used for a long time to improve crop yield and quality. From the earliest application of farm organic fertilizers to the application of inorganic fertilizers, and then to the application of organic-inorganic compound fertilizers. Fertilizer type, fertilization amount and ratio have a great impact on the yield and quality of food crops or economic crops. Although traditional fertilizers, especially organic-inorganic compound fertilizers, have played a good role in increasing crop yields. However, traditional fertilizers have an unreasonable ratio of ingredients and nutrients, which can hardly restore soil fertility, improve soil structure, and even cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05G1/00
Inventor 黄名义
Owner 黄名义
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