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A kind of alkaline soil restoration material and preparation method thereof

A soil remediation, alkaline technology, applied in the field of soil remediation, can solve the problem of low treatment efficiency

Active Publication Date: 2021-08-20
宁夏宁苗生态建设集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low treatment efficiency of common soil remediation materials for reducing soil alkalinity in polluted soil

Method used

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  • A kind of alkaline soil restoration material and preparation method thereof
  • A kind of alkaline soil restoration material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of alkaline soil restoration material, its preparation method comprises the following steps:

[0023] (1) Weigh 18 parts of polyacrylamide, 8.9 parts of phosphoric acid, 7.2 parts of oxalic acid, 4.3 parts of concentrated sulfuric acid and 52 parts of N,N-dimethylformamide into the hydrothermal reaction kettle to maintain the hydrothermal reaction temperature of the system React at 85°C for 30 minutes, raise the temperature of the hydrothermal reactor to 158°C for 2.5 hours, and filter the product, ultrasonically wash 3 times with 500mL ethanol, 3 times with 500mL methanol, and 3 times with 500mL ethanol, ℃, -0.08MPa vacuum drying for 13 minutes to obtain phosphoric acid modified polyacrylamide;

[0024] (2) Weigh 32 parts of polytrimethylene carbonate, 30.2 parts of urea and 23.7 parts of ammonium sulfate and add them to a high-speed mixer. The mixing temperature is 80°C and the mixing speed is 650r / min. Mixing reaction for 23min, the product, 16.9 Parts of pho...

Embodiment 2

[0029] A kind of alkaline soil restoration material, its preparation method comprises the following steps:

[0030](1) Weigh 18 parts of polyacrylamide, 7 parts of phosphoric acid, 6 parts of oxalic acid, 4 parts of concentrated sulfuric acid and 49 parts of N,N-dimethylformamide into the hydrothermal reaction kettle to maintain the hydrothermal reaction temperature of the system React at 85°C for 30 minutes, raise the temperature of the hydrothermal reaction kettle to 145°C for 4 hours, and filter the product, ultrasonically wash 3 times with 500mL ethanol, 3 times with 500mL methanol, and 3 times with 500mL ethanol, and then store at 51°C , -0.08MPa vacuum drying for 13 minutes to obtain phosphoric acid-modified polyacrylamide;

[0031] (2) Weigh 32 parts of polytrimethylene carbonate, 21 parts of urea and 17 parts of ammonium sulfate and add them to a high-speed mixer. The mixing temperature is 80°C and the mixing speed is 650r / min. The mixing reaction is 23min, and the pro...

Embodiment 3

[0036] A kind of alkaline soil restoration material, its preparation method comprises the following steps:

[0037] (1) Weigh 18 parts of polyacrylamide, 11 parts of phosphoric acid, 9 parts of oxalic acid, 6 parts of concentrated sulfuric acid and 60 parts of N,N-dimethylformamide into the hydrothermal reaction kettle to maintain the hydrothermal reaction temperature of the system React at 85°C for 30 minutes, raise the temperature of the hydrothermal reactor to 176°C for hydrothermal reaction for 0.5h, filter the product, ultrasonically wash 3 times with 500mL ethanol, 3 times ultrasonically wash with 500mL methanol, and 3 times ultrasonically wash with 500mL ethanol. ℃, -0.08MPa vacuum drying for 13 minutes to obtain phosphoric acid modified polyacrylamide;

[0038] (2), Weigh 32 parts of polytrimethylene carbonate, 34 parts of urea and 29 parts of ammonium sulfate and add them to a high-speed mixer, the mixing temperature is 80°C, the mixing speed is 650r / min and the mixin...

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Abstract

The invention relates to an alkaline soil restoration material and a preparation method thereof. The alkaline soil restoration material is composed of urea-modified polytrimethylene carbonate, phosphoric acid-modified polytrimethylene carbonate and phosphoric acid-modified polyacrylamide, and the urea-modified polytrimethylene carbonate is modified by acid Polytrimethylene carbonate, urea, ammonia water, ethanol and amino acid reaction are prepared, and described acid-modified polytrimethylene carbonate is made of polytrimethylene carbonate, phosphoric acid, urea, oxalic acid, water, A-171 silane Coupling agent, Sr-10 emulsifier, N,N-dimethylformamide and ethanol reaction are prepared, and described phosphoric acid modified polytrimethylene carbonate is made of polytrimethylene carbonate, urea, ammonium sulfate, phosphoric acid It is prepared by reacting with toluene, and the phosphoric acid-modified polyacrylamide is prepared by reacting polyacrylamide, phosphoric acid, oxalic acid, concentrated sulfuric acid and N,N-dimethylformamide. The alkaline soil remediation material provided by the invention has excellent properties of adjusting soil acidity and alkalinity.

Description

technical field [0001] The invention relates to the field of soil restoration, in particular to an alkaline soil restoration material and a preparation method thereof. Background technique [0002] With the alkalization of chemical agricultural fertilizers and agricultural irrigation water quality, the alkalinity of the existing agricultural production soil is becoming stronger and stronger, and the problem of soil alkalization governance needs to be solved urgently. Therefore, the state encourages researchers in different fields to conduct research on materials and methods for improving soil alkalinity. Due to the low treatment efficiency of ordinary soil remediation materials for reducing soil alkalinity in polluted soil. Therefore, soil remediation agents need to be improved in reducing alkalinity in soil with high efficiency. Contents of the invention [0003] The object of the present invention is to provide a kind of alkaline soil restoration material, this alkalin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/80C05G3/90
CPCC05B15/00C05G3/80C05C9/00C05F11/00
Inventor 化荣余根民曹娟李军张莹代彦霞
Owner 宁夏宁苗生态建设集团股份有限公司
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