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Biochar organic fertilizer with high adsorbability and preparation method and application thereof

A technology of biochar and high adsorption, which is applied in the direction of organic fertilizers, applications, fertilization devices, etc., can solve the problems of increased cost and labor, less microporous structure of biochar, and poor adsorption performance of biochar, so as to achieve good adsorption effect and absorb The effect of strong chelating ability and fast carbonization speed

Inactive Publication Date: 2019-01-11
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the raw materials of biochar and the preparation method of traditional biochar-based organic fertilizers, the microporous structure of biochar is small and the specific surface area is small, resulting in poor adsorption performance of biochar; and the traditional biochar-based organic fertilizer The content of nitrogen, phosphorus, potassium and other plant nutrients and other trace elements is low, resulting in low fertilizer efficiency. It is often necessary to cooperate with other fertilizers to enhance fertilizer efficiency during use, resulting in increased cost and labor.
In addition, although there are many kinds of products such as biochar-based organic fertilizers, there are few reports on biochar-based organic fertilizers for bamboo forests.

Method used

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  • Biochar organic fertilizer with high adsorbability and preparation method and application thereof
  • Biochar organic fertilizer with high adsorbability and preparation method and application thereof
  • Biochar organic fertilizer with high adsorbability and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0046] The present embodiment provides a kind of preparation method of biochar-based organic fertilizer with high adsorption performance, which specifically includes the following steps:

[0047] S1. Preparation of biochar with high adsorption performance

[0048] S11. crushing the bamboo fibers to particles with a diameter of 3 mm, and crushing the straw fibers to a length of 1 mm, for use;

[0049]S12. get the bamboo fiber 50kg that step S11 obtains and straw fiber 50kg, after fully mixing, add diesel oil 1kg, sucrose 1kg, vinyl acetate polymer latex 1kg and rosin 1kg, after mixing, pressure is 10MPa, and temperature is 25 ℃ condition Press down to form a cube fiber block, the density of the fiber block is 0.85kg / m 3 ;

[0050] Wherein, diesel oil is a mixture of heavy diesel oil and light diesel oil in a mass ratio of 0.5:1;

[0051] S13. Carry out carbonization treatment on the fiber block in step S12 under vacuum condition, the vacuum rate is 85%, carbonization treatme...

Embodiment 2

[0056] With reference to the preparation method of Example 1, the difference is: in step S12, 50 kg of bamboo fiber and 50 kg of straw fiber obtained in step S11 are taken, 1.5 kg of diesel oil, 2 kg of sucrose, 2 kg of vinyl acetate polymer latex and 2 kg of rosin are added; in step S13 , the vacuum rate is 88%; in step S2, the feces are dried to a water content of 8%, and then pulverized until the particle size is 5 mm, and then set aside.

Embodiment 3

[0058] With reference to the preparation method of Example 1, the difference is: in step S12, 50 kg of bamboo fiber and 50 kg of straw fiber obtained in step S11 are taken, 2 kg of diesel oil, 3 kg of sucrose, 3 kg of vinyl acetate polymer latex and 3 kg of rosin are added; in step S13, The vacuum rate is 95%; in step S2, the feces are dried to a water content of 7%, and then pulverized until the particle size is 8 mm, for later use.

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Abstract

The invention provides a preparation method of biochar organic fertilizer with high adsorbability. The preparation method specially comprises the following steps of: step 1. preparing biochar with high adsorbability; step 2. preparing faeces for later application; step 3. thoroughly mixing the biochar with high adsorbability in the step 1 with the faeces in proportion, and then carrying out dryingtreatment on the obtained mixture; step 4. pelleting the mixture in the step 3, cooling, and sieving to obtain the biochar organic fertilizer with high adsorbability, wherein in the step S11, the rawmaterials are plant fibers. The biochar organic fertilizer with the high adsorbability is prepared by using the biochar as a matrix and adding the faeces in a specific proportion through the steps ofdrying, pelletizing, cooling, sieving and the like; the fertilizer efficiency of the biochar organic fertilizer is remarkably improved; and the preparation method is simple, scientific, reasonable, green, environmentally-friendly, and low in cost, and can also realize the functionalization and high-valued utilization of biomasses.

Description

technical field [0001] The invention belongs to the technical field of biochar-based fertilizer preparation, and more specifically relates to a biochar-based organic fertilizer with high adsorption performance and its preparation method and application. Background technique [0002] The survival and development of human beings has always been accompanied by the production of a large amount of human and animal excrement. With the improvement of people's living standards, the pollution of human and animal excrement to the environment has become increasingly serious. Since human and livestock feces contain a large amount of organic matter and nitrogen, phosphorus, potassium and other substances, if they are discharged directly, it will cause water pollution and eutrophication, and the organic matter in the feces will rot and decompose to produce toxic and harmful gases, which is prone to foul odor. At the same time, most human and livestock manure has the characteristics of hig...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05F3/00C05G3/80C05F11/00
Inventor 曾广胜谭益民陈一张勇刘水长罗学明
Owner HUNAN UNIV OF TECH
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