Lead ion repairing material for soil remediation and preparation method thereof

A remediation material and soil remediation technology, applied in the field of soil remediation, can solve problems such as low treatment efficiency of lead ion content, and achieve the effects of improving the content of migratory lead ions, increasing the content of nitrogen, and preventing detonation.

Active Publication Date: 2019-03-26
徐州中矿岩土技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low treatment efficiency of ordinary soil remediation materials to reduce the content of lead ions in the soil

Method used

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  • Lead ion repairing material for soil remediation and preparation method thereof
  • Lead ion repairing material for soil remediation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of lead ion remediation material for soil remediation, its preparation method comprises the following steps:

[0023] (1), Weigh 33 parts of acrylic acid, 9.5 parts of isooctyl acrylate, 2.3 parts of urea, 0.9 parts of Sr-10 emulsifier, 26 parts of water, 43 parts of ethanol and 0.25 parts of ammonium persulfate and add them to the reaction kettle. 115r / min, maintain the reaction temperature of the system at 45°C for 35min, raise the temperature of the reactor to 75°C for 1.5h, add 6.9 parts of urea to the reactor in 6 times and continue the reaction for 1.5h while maintaining the above reaction conditions. The product was filtered, ultrasonically washed 3 times with 500mL methanol, 3 times ultrasonically washed with 500mL ethanol, and vacuum-dried at 49°C and -0.08MPa for 13min to obtain urea-modified polyacrylic acid;

[0024] (2), Weigh 23 parts of polylactic acid, 4.9 parts of lignin and 1.3 parts of maleic anhydride and add them to the open mill, keep the te...

Embodiment 2

[0029] A kind of lead ion remediation material for soil remediation, its preparation method comprises the following steps:

[0030](1), Weigh 33 parts of acrylic acid, 5 parts of isooctyl acrylate, 1.5 parts of urea, 0.3 parts of Sr-10 emulsifier, 21 parts of water, 35 parts of ethanol and 0.1 part of ammonium persulfate and add them to the reaction kettle. 115r / min, maintain the reaction temperature of the system at 45°C for 35min, raise the temperature of the reactor to 69°C for 3h, add 4.5 parts of urea to the reactor in 6 times and continue the reaction for 1.5h while maintaining the above reaction conditions, the product After filtration, ultrasonic washing with 500 mL of methanol for 3 times, ultrasonic washing with 500 mL of ethanol for 3 times, and vacuum drying at 49 °C and -0.08 MPa for 13 min, urea-modified polyacrylic acid was obtained;

[0031] (2), Weigh 23 parts of polylactic acid, 3 parts of lignin and 0.5 part of maleic anhydride and add them to the open mill,...

Embodiment 3

[0036] A kind of lead ion remediation material for soil remediation, its preparation method comprises the following steps:

[0037] (1), Weigh 33 parts of acrylic acid, 14 parts of isooctyl acrylate, 4.25 parts of urea, 2 parts of Sr-10 emulsifier, 35 parts of water, 49 parts of ethanol and 0.5 part of ammonium persulfate and add them to the reaction kettle. 115r / min, maintain the reaction temperature of the system at 45°C for 35min, raise the temperature of the reactor to 91°C for 0.5h, add 12.75 parts of urea to the reactor in 6 times and continue the reaction for 1.5h under the above reaction conditions. The product was filtered, ultrasonically washed 3 times with 500mL methanol, 3 times ultrasonically washed with 500mL ethanol, and vacuum-dried at 49°C and -0.08MPa for 13min to obtain urea-modified polyacrylic acid;

[0038] (2), take 23 parts of polylactic acid, 6 parts of lignin and 3 parts of maleic anhydride and add them to the open mill, maintain the temperature of th...

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Abstract

The invention relates to a lead ion repairing material for soil remediation and a preparation method thereof. The lead ion repairing material for the soil remediation is composed of ammonium salt modified nano polylactic acid, an Sr-10 emulsifier, water, ethanol and urea modified polyacrylic acid; the ammonium salt modified nano polylactic acid is prepared by taking acid modified nano polylactic acid, ammonia water, amino acid, the ethanol and urea to react; the acid modified nano polylactic acid is prepared by taking modified nano polylactic acid, chlorosulfonic acid, acetic acid, oxalic acidand formic acid to react; the modified nano polylactic acid is prepared by taking polylactic acid, lignin, maleic anhydride, the ethanol, N,N-dimethylformamide, nanocellulose and the urea to react; and the urea modified polyacrylic acid is prepared by taking acrylic acid, isooctyl acrylate, the urea, the Sr-10 emulsifier, the water, the ethanol and ammonium persulfate to react. The lead ion repairing material for the soil remediation, provided by the invention, has excellent performance of removing migration-state lead ions of soil.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a lead ion remediation material for soil remediation and a preparation method thereof. Background technique [0002] With the pollution of chemical fertilizers and agricultural irrigation water quality, the lead ion pollution of the existing agricultural production soil is becoming more and more serious, and the problem of lead ion pollution in soil needs to be solved urgently. Therefore, the state encourages researchers in different fields to conduct research on materials and methods for reducing lead ion content in soil. Due to the low treatment efficiency of common soil remediation materials for reducing the content of lead ions in soil. Therefore, soil remediation agents need to be improved in terms of the performance of reducing lead ion content in soil with high efficiency. Contents of the invention [0003] The object of the present invention is to provide a lead ion re...

Claims

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Application Information

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IPC IPC(8): C09K17/18C08G81/02C08F291/06C08F220/06C08F220/18C08F222/06C08F8/30
CPCC08F8/30C08F220/06C08F283/02C08F289/00C08G81/027C09K17/18C08F222/06C08F220/1808
Inventor 代彦霞
Owner 徐州中矿岩土技术股份有限公司
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