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Extraction method of water-soluble humic acid

A water-soluble humic acid and extraction method technology, applied in fertilizer mixture, organic chemistry, fertilization equipment, etc., can solve the problems of low extraction rate of water-soluble humic acid, unfavorable industrial production, single activator, etc., to enhance crop resistance High efficiency, obvious effect of increasing production, and wide applicability

Inactive Publication Date: 2015-03-25
山东聊城鲁西化工第五化肥有限公司
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Problems solved by technology

[0002] At present, the activation of humic acid mainly adopts acidification method, alkalization method and biological fermentation method, among which the method of alkalization activation is widely used, and the alkaline substances used to activate humic acid are mainly potassium hydroxide, potassium carbonate, sodium bicarbonate, Potassium bicarbonate, sodium hydroxide, ammonia water, etc., but these alkaline substances have the disadvantages of high cost, not environmental protection, single activator, low extraction rate of water-soluble humic acid, etc., which are not conducive to the realization of industrial production

Method used

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Examples

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Effect test

Embodiment 1

[0022] A kind of extraction method of water-soluble humic acid, such as figure 1 As shown, add humic acid raw powder into the reaction kettle, pickle with sulfuric acid solution with a volume fraction of 2%, remove calcium and magnesium ions; add sodium hydroxide solution with a volume fraction of 4%, slowly add a volume fraction of 30% The hydrogen peroxide was subjected to oxidation and alkali extraction, and reacted at 80°C for 60 minutes while stirring at a speed of 500 r / min until the pH of the final solution was 8 to obtain water-soluble humic acid.

Embodiment 2

[0024] A kind of extraction method of water-soluble humic acid, such as figure 1 As shown, put the original humic acid powder into the reaction kettle, pickle with a sulfuric acid solution with a volume fraction of 3%, and remove calcium and magnesium ions; add a sodium hydroxide solution with a volume fraction of 5%, and then slowly add a volume fraction of 35% hydrogen peroxide, carry out oxidation and alkali extraction, react at 90°C for 90 minutes, and stir at the same time, the rotation speed is 600r / min, until the pH value of the final solution is 10, and water-soluble humic acid is obtained.

Embodiment 3

[0026] A kind of extraction method of water-soluble humic acid, such as figure 1 As shown, put the original humic acid powder into the reaction kettle, pickle with a sulfuric acid solution with a volume fraction of 2.5%, and remove calcium and magnesium ions; add a sodium hydroxide solution with a volume fraction of 4.5%, and then slowly add a volume fraction of 32% hydrogen peroxide, carry out oxidation and alkali extraction, react at 85°C for 75 minutes, and stir at the same time, the rotation speed is 550r / min, until the final pH value of the solution is 9, and water-soluble humic acid is obtained.

[0027] (1) Determination of Soluble Humic Acid Content in Activation Filtrate of Weathered Coal

[0028] The determination of humic acid must be under strong acidic conditions. Potassium dichromate can oxidize the carbon in humic acid to carbon dioxide, and then it can be analyzed and determined. What get when adopting HG / T 3278-2011 sodium humate line standard to measure is s...

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Abstract

The invention discloses an extraction method of water-soluble humic acid. The method is characterized by comprising the steps of pickling raw humic acid powder to remove humic acid containing calcium ions and magnesium ions; adding sodium hydroxide for alkaline extraction; oxidizing with hydrogen peroxide; and enabling sodium hydroxide and hydrogen peroxide to react for 60 to 90min under a temperature of 80 to 90 DEG C and agitating at the same time until the final solution is at pH of 8 to 10 so as to obtain water-soluble humic acid. After being added with water-soluble humic acid produced by the method, the compound fertilizer is outstanding in color and luster, high in strength, applicable to topdressing of different crops at different seasons, and wide in applicable scope; nutrient elements integrate the functions of quick acting, long lasting and synergia, so that the effects of improving the quality of the crops, inhibiting soil-borne disease, improving stress resistance of the crops and prompting early-maturing of the crops can be realized; the effect of fertilizer on increasing yield is obvious, and the yield per mu is increased by more than 20% on year-on-year basis.

Description

technical field [0001] The invention relates to the extraction of water-soluble humic acid in raw coal, in particular to a method for extracting water-soluble humic acid. Background technique [0002] At present, the activation of humic acid mainly adopts acidification method, alkalization method and biological fermentation method, among which the method of alkalization activation is widely used, and the alkaline substances used to activate humic acid are mainly potassium hydroxide, potassium carbonate, sodium bicarbonate, Potassium bicarbonate, sodium hydroxide, ammonia water, etc., but these alkaline substances have the disadvantages of high cost, unenvironmental protection, single activator, low extraction rate of water-soluble humic acid, etc., which are not conducive to realizing industrial production. Contents of the invention [0003] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art, provide a kind of extraction metho...

Claims

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Application Information

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IPC IPC(8): C08H99/00C07G99/00C05G3/04C05G3/80
Inventor 孙海兵玄先路张来明付英红
Owner 山东聊城鲁西化工第五化肥有限公司
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