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Modification method of humic acid and application of product thereof in soil remediation

A black humic acid and modification technology, applied in the restoration of polluted soil, recycling technology, plastic recycling and other directions, can solve problems such as poor performance, can not achieve good repair effect, etc., achieve good effect and good repair ability , the effect of strong repair ability

Inactive Publication Date: 2012-06-20
杭州韦尔茂通环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the surface activity of black humic acid has been increased through modification, the performance of the modified black humic acid in repairing heavy metal and organic pollution is poor, and the repair effect cannot be achieved very well.

Method used

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  • Modification method of humic acid and application of product thereof in soil remediation
  • Modification method of humic acid and application of product thereof in soil remediation
  • Modification method of humic acid and application of product thereof in soil remediation

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Take 10g of black humic acid and add it to a four-necked bottle, then add a certain amount of 15% potassium carbonate aqueous solution to completely dissolve the black humic acid, and adjust the pH value to 9-11, then raise the temperature to 65°C under stirring, Dissolving the alkylating agent in an ethanol solvent to form a mixed solution of the alkylating agent and ethanol, so that the mass percentage of the alkylating agent in the mixed solution is 10%, and the alkylating agent is an alkyl halide Hydrocarbons, the halogenated alkanes are chlorododecane straight-chain saturated alkanes, the mass ratio of the chlorododecane straight-chain saturated alkanes to black humic acid is 1:3, and the above-mentioned alkylating agent is started to be added dropwise The mixed solution with ethanol is subjected to an alkylation reaction, and the reaction time is 4 hours. After the reaction is completed, the temperature is cooled to room temperature and filtered. The filtration pro...

Embodiment 2

[0037] Take 10g of black humic acid and add it to a four-neck bottle, then add a certain amount of 20% sodium carbonate aqueous solution to completely dissolve the black humic acid, and adjust the pH value to 9-11, then raise the temperature to 70°C under stirring conditions, Dissolving the alkylating agent in a methanol solvent to form a mixed solution of the alkylating agent and methanol, so that the mass percentage of the alkylating agent in the mixed solution is 30%, and the alkylating agent is an alkyl halide Hydrocarbon, the halogenated alkane is hexadecane bromide linear saturated alkane, the mass ratio of the hexadecane bromide straight chain saturated alkane to black humic acid is 1:5, and the above-mentioned alkylating agent is started to be added dropwise The mixed solution with methanol was subjected to an alkylation reaction. The reaction time was 10 hours. After the reaction was completed, it was cooled to room temperature and filtered. The filtration process was ...

Embodiment 3

[0040] Take 10g of black humic acid and add it to a four-neck bottle, then add a certain amount of 35% sodium carbonate aqueous solution to completely dissolve black humic acid, and adjust the pH value to 9-11, and then raise the temperature to 70°C under the condition of stirring After first dissolving the alkylating agent in the propanol solvent, a mixed solution of the alkylating agent and propanol is formed, so that the mass percentage of the alkylating agent in the mixed solution is 15%. The reagent is a halogenated alkane, and the said halogenated alkane is a bromooctadecyl straight-chain saturated alkane, and the mass ratio of the bromooctadecane straight-chain saturated alkane to black humic acid is 1:5, and the above-mentioned The mixed solution of alkylating agent and propanol is carried out alkylation reaction, and the reaction time is 10 hours, cools down to room temperature and filters after reaction, collects filtrate, begins to carry out vacuum distillation to dr...

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Abstract

The invention relates to a modification method of humic acid and an application of a product thereof in soil remediation and belongs to the technical fields of surfactants and soil remediation. Therefore, the problems of poor surface activity and poor polluted soil remediation capability of the humic acid in the prior art can be solved. The method comprises the following steps: performing alkylation reaction on the humic acid and an alkylation reagent, namely halogenated alkane to get alkylated humic acid; and then performing sulfomethylation reaction with a sulfomethylation reagent so as to get a final humic acid modified product. The method disclosed by the invention is simple in technological process and easy to operate, and the obtained humic acid modified product is higher in surface activity and enables the strength of hydrophilicity to be matched with that of lipophilicity; and the humic acid modified product can also better remedy the polluted soil and particularly has the remediation capability in the aspects of remedying the soil polluted by heavy metals and the soil polluted by organic matters.

Description

technical field [0001] The invention relates to a modification of humic acid, in particular to a modification method of black humic acid and the application of its product in soil restoration, and belongs to the technical field of surfactants and soil restoration. Background technique [0002] Humic acid is an amorphous, mainly plant remains, which are decomposed and transformed by microorganisms and a series of chemical processes and accumulated organic substances, widely present in soil, lakes, rivers, oceans and peat, lignite and weathering coal. Its molecules contain conjugated double bonds, aromatic rings, quinone groups and semiquinone groups. It is a natural soil conditioner with interface activity, cation exchange capacity, complexation capacity and adsorption and dispersion capacity. [0003] According to the solubility and color of humic acid in some solvents, humic acid can be divided into fulvic acid, brown humic acid and black humic acid. Fulvic acid is a subs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H99/00B09C1/00B09C1/08
CPCY02W30/62
Inventor 于红艳徐峰张昕欣陈红云
Owner 杭州韦尔茂通环境技术有限公司
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