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A kind of preparation method of humic acid biostimulant and prepared biostimulant

A biostimulant, humic acid technology, applied in the field of humic acid growth stimulant, humic acid biostimulant and its preparation, can solve the problem of limiting the difference of humic acid, the molecular structure and composition of humic acid, and the research on the mechanism of humic acid Insufficient depth and other problems, to achieve the effect of improving anti-free radical ability, improving quality, and enhancing plant vitality

Active Publication Date: 2016-04-13
山西益成宏业腐植酸科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, existing studies only focus on the conversion rate of humic acid in humic acid prepared by different preparation methods and the conversion rate and yield of humic acid in different low-rank coals. The regulation effect of humic acid prepared by different preparation methods on plant growth has not There are studies, but in order to obtain a specific effect, it is currently achieved by mixing humic acid with other substances. This is due to the lack of thorough research on the mechanism of humic acid on plant growth stimulation, and the preparation of humic acid under different conditions. There are not many studies on the molecular structure and composition of humic acid. These make people think that as long as the effect of humic acid is only related to its content, it limits people to study the difference in the stimulating effect of humic acid prepared by different preparation methods on plants.

Method used

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  • A kind of preparation method of humic acid biostimulant and prepared biostimulant
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  • A kind of preparation method of humic acid biostimulant and prepared biostimulant

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Embodiment 1

[0035] A method for preparing a humic acid biostimulant, comprising the following steps: selecting lignite with an average organic matter content of 75%, pulverizing it to a particle size of not less than 120 mesh, and in the presence of an Ag-Pt catalyst, by mass ratio lignite powder: concentrated sulfuric acid: 10% hydrogen peroxide = 100:2:200, after mixing the three, react for 10 minutes under the ultrasonic cavitation effect at 80°C, then add water twice the weight of hydrogen peroxide and 5% sodium sulfite by weight of lignite powder, at 100°C Reflux for 1 hour, and reflux the aqueous phase to concentrate and dry to obtain the humic acid biostimulant.

Embodiment 2

[0037] A method for preparing a humic acid biostimulant, comprising the following steps: after lignite with an average organic matter content of 70% is pulverized to a particle size of not less than 120 mesh, in the presence of an Ag-Pt catalyst, the mass ratio is lignite powder: concentrated sulfuric acid: 8 % hydrogen peroxide = 100:3:220, after mixing the three, react for 18 minutes under ultrasonic cavitation effect at 70°C, then add water twice the weight of hydrogen peroxide and sodium sulfite with 5% weight of lignite powder, and reflux at 95°C After 1.2h, the aqueous phase was refluxed for concentration and drying to obtain the humic acid biostimulant.

Embodiment 3

[0039] A method for preparing a humic acid biostimulant, comprising the following steps: selecting lignite with an average organic matter content of 70%, pulverizing to a particle size of not less than 120 mesh, and in the presence of an Ag-Pt catalyst, by mass ratio lignite powder:concentrated sulfuric acid: 10% hydrogen peroxide = 100:2:180, after mixing the three, react for 15 minutes under the ultrasonic cavitation effect at 80°C, then add water twice the weight of hydrogen peroxide and 7% sodium sulfite of lignite powder, at 90°C Reflux for 1.5h, reflux the water phase for concentration and drying, and obtain the humic acid biostimulant.

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Abstract

The invention relates to a biostimulant, and particularly relates to a humic acid biostimulant and a preparation method thereof. The humic acid biostimulant is a humic acid growth stimulant prepared by the oxydative degradation of brown coal. The technical problem to be solved is to provide a method for directly preparing the humic acid biostimulant by using low-rank coal and the humic acid biostimulant obtained by using the method. According to the technical scheme, the preparation method of the humic acid biostimulant comprises the following steps: crushing the brown coal, mixing and reacting the brown coal powder with concentrated sulfuric acid and hydrogen peroxide in the presence of a Ag-Pt catalyst, then adding water and sodium sulfide for refluxing, and concentrating and drying the backflow water phase so as to obtain the humic acid biostimulant, wherein the content of organic matters in the brown coal is not lower than 70%, and the particle size of the brown coal powder is no less than 120 meshes; the mass ratio of the brown coal powder to concentrated sulfuric acid to hydrogen peroxide is 100: (2-3): (180-240).

Description

technical field [0001] The invention relates to a biostimulant, in particular to a humic acid biostimulant and a preparation method thereof, which is a humic acid growth stimulator prepared by oxidative degradation of lignite. Background technique [0002] Humic acid is a kind of amorphous high-molecular organic matter, which is produced by the degradation of dead biomass by microorganisms, and widely exists in low-rank coal such as lignite, weathered coal, peat and soil in nature. Humic acid has a wide range of uses, and can be used as water treatment agent, coal water slurry stabilizer, petroleum additives, etc. In recent years, humic acid has been widely studied and applied as plant growth stimulant. [0003] The production of coal-based humic acid is mainly oxidative degradation of weathered coal with nitric acid, and oxidation with strong oxidants such as hydrogen peroxide, potassium permanganate, and sulfuric acid. Humic acid is insoluble in water and soluble in alkal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07G99/00C08H99/00A01N61/00A01P21/00
Inventor 张彩凤高宇
Owner 山西益成宏业腐植酸科技有限公司
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