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Method for producing biochemical humate by microbially fermented furfural residues

A technology of microbial fermentation and humate, applied in the direction of fermentation, etc., to achieve good environmental protection effect, strong acidity, and the effect of solving pollution

Active Publication Date: 2012-06-27
黑龙江龙兴肥业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on extracting biochemical humate from furfural slag by microbial fermentation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a. Add the tower bottom wastewater produced by furfural to the furfural slag, and adjust the moisture content of the furfural slag to 50%;

[0022] b. adjust the carbon-to-nitrogen ratio C / N of furfural slag with ammonium bisulfate and bran to be 25:1;

[0023] c. BM bacterium powder is evenly mixed in furfural slag, the mass ratio of control furfural slag and bacterium powder is 2000:1, piles into fermentation tank, ferments for 75 days, controls fermentation temperature and is no more than 60 ℃, after fermentation, The content of humic acid in furfural slag increased by 78%.

[0024] d. adding mass concentration in the furfural slag is 4% NaOH solution, the mass ratio of fermented furfural slag and NaOH solution is 1:8, leave standstill at normal temperature;

[0025] e. In order to separate the slag liquid, carry out three-stage sedimentation, first-stage sedimentation for 24 hours, carry out two-stage sedimentation on the upper liquid, and after 8 hours, carry out ...

Embodiment 2

[0027] a. Add the tower bottom wastewater produced by furfural to the furfural slag, and adjust the moisture content of the furfural slag to 65%.

[0028] b. Use ammonium sulfate and bran to adjust the C / N ratio of furfural slag to 27:1.

[0029] c. EM bacterium powder is evenly mixed in the furfural slag, the mass ratio of control furfural slag and bacterium powder is 8000:1, piles in the fermentation tank, ferments 90 days, controls fermentation temperature and is no more than 60 ℃, after fermentation, The content of humic acid in furfural slag increased by 150%.

[0030] d. Add KOH solution with a mass concentration of 3% to the furfural residue, the mass ratio of the fermented furfural residue to the KOH solution is 1:5, and stand at room temperature.

[0031] e. In order to separate the slag liquid, carry out three-stage sedimentation, first-stage sedimentation for 24 hours, carry out two-stage sedimentation on the upper liquid, and after 8 hours, carry out three-stage s...

Embodiment 3

[0033] a. Add the tower bottom wastewater produced by furfural to the furfural slag, and adjust the moisture content of the furfural slag to 60%;

[0034] b. Use urea and bran to adjust the carbon-to-nitrogen ratio (C / N) of furfural slag to 30:1;

[0035] c. the HM bacterium powder is evenly mixed in the furfural slag, the mass ratio of the control furfural slag and the bacterium powder is 20000:1, piled into the fermentation tank, fermented for 60 days, and the controlled fermentation temperature is no more than 60°C. After fermentation, The content of humic acid in furfural slag increased by 95%;

[0036] d. Adding mass concentration of 1% NH to furfural slag 3 ??H 2 O solution, fermented furfural residue and NH 3 ??H 2 The mass ratio of O solution is 1:10, is left standstill at normal temperature;

[0037] e. In order to separate the slag liquid, carry out three-stage sedimentation, first-stage sedimentation for 24 hours, carry out two-stage sedimentation on the upper ...

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Abstract

The invention relates to a method for producing humate, particularly a method for producing biochemical humate by microbially fermented furfural residues, comprising the following steps: a, adding waste water from the bottom a tower of furfural production in furfural residues, and adjusting the water content of the furfural residues; b, using a nitrogen source and a carbon source to adjust the carbon-nitrogen ratio of the furfural residues; c, uniformly stirring in strain powder with the furfural residues, controlling the weight ratio of the furfural residues to the strain powder, piling into a fermenting tank, fermenting for 60-90 days, and controlling the fermentation temperature to no higher than 60 DEG C; d, adding an alkali liquor in the furfural residues, and standing at normal temperature; and e, carrying out three-level settlement to obtain a clear supernatant, drying the supernatant by a spray drier with a drying temperature of 60-70 DEG C to obtain the humate. The method is unique, can reduce environmental pollution, and raises the humic acid content in the furfural residues by microbial fermentation.

Description

technical field [0001] The invention relates to a method for producing biochemical humate, in particular to a method for producing biochemical humate by microbial fermentation of furfural residue. Background technique [0002] my country's furfural industry consumes 11-12 tons of corncobs to produce 1 ton of furfural, and discharges 10-11 tons of furfural slag, with a pH value of 2-3. It not only contains a certain amount of N, P, K, Zn, Mg, Fe and other elements, but also Contains a large amount of organic matter, the content can reach more than 90%, of which the humic acid content reaches 20%. At present, furfural slag from most domestic furfural plants is used as boiler fuel. Taking furfural with an annual output of 5,000 tons as an example, the annual output of furfural slag is 60,000 tons. In addition to burning 30,000 tons, there is still a large amount of furfural residue that is difficult to deal with, causing great pollution to the environment. [0003] In the 1990...

Claims

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Application Information

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IPC IPC(8): C12P1/00
Inventor 张晓忠靳毅刘旭宇杨志坚张茜
Owner 黑龙江龙兴肥业有限公司
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