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Method for preparing charcoal slow-release fertilizer by utilizing dioscorea zingiberensis saponin fiber waste residues

A technology of turmeric saponin and biochar, which is applied in the direction of application, fertilization device, fertilizer mixture, etc., can solve the problems affecting the development of saponin, polluting the environment, wasting resources, etc., to save time and energy, low pyrolysis temperature, and low cost cheap effect

Inactive Publication Date: 2012-10-03
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The saponin industry will produce a large amount of fiber waste residue. At present, such waste residue is either discarded or piled up in the factory area, which not only pollutes the environment but also wastes resources. At present, practical and feasible technologies are urgently needed to solve this bottleneck problem that affects the development of the saponin industry.
The main ways for the application of traditional turmeric saponin industrial waste residues include the preparation of fuels, artificial materials, organic fertilizers, etc., but there are almost no engineering applications at present, especially for the saponin process fiber waste residues of the direct separation method
[0003] The utilization rate of chemical fertilizers in China is far lower than that of developed countries in the world. In order to improve the utilization rate of chemical fertilizers, reduce the loss of chemical fertilizers, and prevent and control agricultural non-point source pollution, "slow-release chemical fertilizers" provide a new idea, but the selection of slow-release materials, slow The composite process and rational application of released materials and fertilizers are urgent problems to be solved in agriculture, and the preparation of biochar slow-release fertilizers has not been reported at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation experiment

[0022] The turmeric saponin fiber waste residue obtained by the direct separation method (the saponin waste residue of the traditional process is that the raw materials of traditional Chinese medicine such as turmeric are subjected to high-temperature acid hydrolysis, and the remaining substances such as starch, protein, and cellulose are removed, and the remaining substances such as saponin are extracted. The solid powder is the waste residue produced after fermentation and acidolysis, while the direct separation method uses physical methods to separate the fiber and starch in turmeric, and then conducts "fermentation-acidolysis-extraction of saponin", which is a fermentation-acidolysis method. The waste residue produced before. The main components of the waste residue produced by the direct separation method are organic matter such as cellulose, hemicellulose, and lignin. It has been determined that the cellulose content is significantly hi...

Embodiment 2

[0026] (1) Preparation experiment

[0027] The saponin fiber waste residue of the direct separation method is air-dried, crushed to 2-3mm uniform particles, placed in a carbonization furnace for anaerobic pyrolysis and carbonization, the heating rate is 4°C / min, the pyrolysis temperature is 400°C, carbonization is 40min, and it is obtained after cooling. Biochar 2". Cool and grind "bio-char 2" into 80-mesh bio-char powder; prepare 60% urea-formaldehyde resin binder solution; weigh 30 grams of bio-char powder 2 and place it in a tray; spray 20 g of binder solution evenly on The surface of the biochar powder is made to make the particles wet but not bonded; blow in hot air for about 5 minutes; weigh 100 grams of urea that has been crushed through an 80-mesh sieve and add it, stir for 15 minutes to mix evenly, repeat this twice and then pass through the tablet machine Sheet-shaped biochar urea slow-release fertilizer can be prepared after pressing and air-drying;

[0028] (2) A...

Embodiment 3

[0031] (1) Preparation experiment

[0032] The biochar preparation steps are the same as in Example 1, and "biochar 1" is ground into 200 mesh biochar powder; a 70% urea-formaldehyde resin-alcohol binder solution is prepared; 32 grams of "biochar powder 1" is weighed and placed in a tray, Take 34g of 60% urea-formaldehyde resin solution and spray it evenly on the surface to make the particles wet but not bonded; blow in hot air for about 5 minutes, weigh 100g of ammonium dihydrogen phosphate powder and add it, stir for 15 minutes to mix evenly, repeat this process for 2 times The flake biochar slow-release phosphate fertilizer can be obtained after being compressed by a tablet press and air-dried;

[0033] (2) Application experiment

[0034] The experimental method is the same as in Example 1, and the experimental results after correction of the blank value show that the initial phosphorus leaching rates of the tablet slow-release fertilizer group and the ammonium dihydrogen ...

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Abstract

The invention relates to a method for preparing a charcoal slow-release fertilizer by utilizing dioscorea zingiberensis saponin fiber waste residues. The method comprises the following steps of: (1) air drying the dioscorea zingiberensis saponin fiber waste residues, smashing and sieving; (2) putting in a reactor, rising temperature to be 300-600 DEG C, and carrying out pyrolytic carbonization under the condition of oxygen limited to obtain charcoal powder after cooling and grinding; and (3) spraying the charcoal powder onto binder solution, packaging a fertilizer for 2-5 times, air drying after mixing uniformly, or pelleting through a comminutor, or compression molding through a mould, so as to obtain the charcoal slow-release fertilizer. According to the method, the process is simple, the cost is low, and the time and the energy are saved; and charcoal and the fertilizer are packaged according to a certain proportion, and a complementary or synergistic effect which exists between the charcoal and the fertilizer is utilized, so that the nutrient efficiency is improved.

Description

technical field [0001] The invention relates to a method for preparing biochar type slow-release fertilizer by using turmeric saponin fiber waste residue. Background technique [0002] The saponin industry will produce a large amount of fiber waste residue. At present, such waste residue is either discarded or piled up in the factory area, which not only pollutes the environment but also wastes resources. At present, practical and feasible technologies are urgently needed to solve this bottleneck problem that affects the development of the saponin industry. The main ways for the application of traditional process turmeric saponin industrial waste residues include the preparation of fuels, artificial materials, organic fertilizers, etc., but there are almost no engineering applications at present, especially for the direct separation method of saponin process fiber waste residues. [0003] The utilization rate of chemical fertilizers in China is far lower than that of develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCY02A40/22Y02P60/21
Inventor 周旋向罗京毕亚凡左淼邓光天
Owner WUHAN INSTITUTE OF TECHNOLOGY
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