Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A kind of preparation method and application of soil cadmium-removing barrier agent

A barrier agent and soil technology, applied in the field of materials science, can solve the problems such as the inability to remove water-soluble cadmium ions, and achieve the effect of high cadmium removal efficiency, good effect, and easy control of synthesis conditions

Active Publication Date: 2021-11-19
CHANGAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies of the existing preparation technology, the purpose of the present invention is to provide a preparation method and application of a soil cadmium removal barrier, which solves the problem that the flocculants in the prior art only have flocculation and cannot remove water-soluble cadmium ions The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method and application of soil cadmium-removing barrier agent
  • A kind of preparation method and application of soil cadmium-removing barrier agent
  • A kind of preparation method and application of soil cadmium-removing barrier agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of preparation method of soil cadmium-removing barrier agent, comprising:

[0027] Take 1.58g of polyacrylamide gel and add it to 100ml of distilled water, add 10% hydrochloric acid solution to adjust the pH to 1-2 to obtain a mixed solution 1, and transfer the mixed solution 1 into a three-necked flask;

[0028] Add 1.87mL of 10% formaldehyde solution into the three-necked flask according to the mass ratio of polyacrylamide and formaldehyde solution of 1:0.22, put the three-necked flask into a beaker and heat it hydrothermally at 25°C for 120min to obtain the mixed solution II;

[0029] Add 10mL of 0.36g / mL 2-chlorobenzylamine solution to the there-necked flask according to the mass ratio of polyacrylamide and 2-chlorobenzylamine solution at a ratio of 1:2.28, and react for 120min to obtain the product soil cadmium-removing barrier agent. This implementation The soil cadmium removal barrier agent in the example is also called 2-chloroben...

Embodiment 2

[0036] This embodiment provides a kind of preparation method of soil cadmium-removing barrier agent, comprising:

[0037] Take 1.58g of polyacrylamide gel and add it to 100ml of distilled water, add 10% hydrochloric acid solution to adjust the pH to 1-2 to obtain a mixed solution 1, and transfer the mixed solution 1 into a three-necked flask;

[0038] Add 1.275mL of 10% formaldehyde solution into the three-neck flask according to the mass ratio of polyacrylamide and formaldehyde solution of 1:0.15, put the three-necked flask into a beaker and heat it hydrothermally at 25°C for 120min to obtain the mixed solution II;

[0039] Add 8.77mL of 0.36g / mL 2-chlorobenzylamine solution into the three-necked flask according to the mass ratio of polyacrylamide and 2-chlorobenzylamine solution at a ratio of 1:2, and react for 120min to obtain the product soil cadmium removal barrier.

[0040] The product structure identification spectrogram and result of this embodiment are the same as tho...

Embodiment 3

[0043] This embodiment provides a kind of preparation method of soil cadmium-removing barrier agent, comprising:

[0044] Take 1.58g of polyacrylamide gel and add it to 100ml of distilled water, add 10% hydrochloric acid solution to adjust the pH to 1-2 to obtain a mixed solution 1, and transfer the mixed solution 1 into a three-necked flask;

[0045]Add 2.55mL of 10% formaldehyde solution into the three-neck flask according to the mass ratio of polyacrylamide and formaldehyde solution of 1:0.3, put the three-necked flask into a beaker and heat it hydrothermally at 25°C for 120min to obtain the mixed solution II;

[0046] Add 11.0mL of 0.36g / mL 2-chlorobenzylamine solution into the three-neck flask according to the mass ratio of polyacrylamide and 2-chlorobenzylamine solution of 1:2.5, and react for 120min to obtain the product soil cadmium removal barrier.

[0047] The product structure identification spectrogram and result of this embodiment are the same as those of Example ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a soil cadmium-removing barrier agent. Step 1: take polyacrylamide gel and add it to distilled water, and adjust the pH to 1-2 to obtain a mixed solution 1; Step 2: add formaldehyde solution to the mixed solution 1 Carry out hydroxymethylation reaction to obtain mixed solution two; Step 3: add 2-chlorobenzylamine solution to carry out grafting reaction in mixed solution two and obtain soil cadmium-removing barrier agent, soil cadmium-removing barrier agent of the present invention can be in flocculant structure Introducing a group to capture cadmium ions, so that it has two properties of reaction with cadmium ions and flocculation, and can obtain an effective practical method for removing cadmium ions. The preparation method of the present invention has the advantages of easy synthesis conditions, high cadmium removal efficiency, The residual amount is low, and the removal rate of cadmium ions in soil can reach 99.8%, which can meet the national detection requirements for cadmium ion pollutants in soil.

Description

technical field [0001] The invention belongs to the technical field of materials science, and in particular relates to a preparation method and application of a barrier agent for removing cadmium from soil. Background technique [0002] Since the discovery of cadmium ions in the early 20th century, the output has increased year by year, and it is one of the common heavy metal pollutants in soil. A large amount of cadmium is discharged through waste gas, waste water, and waste residue, causing serious ecological and environmental problems. The accumulation of cadmium in the human body can cause kidney failure, arthritis, cancer and other diseases, and the accumulation in plants will affect the growth of plants. The World Health Organization stipulates that the maximum allowable intake of cadmium in the human body is 1 μg.kg -1 .d -1 . However, with the rapid development of industry, the unreasonable discharge of industrial wastewater such as mining and metallurgy, the app...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/18
CPCC09K17/18
Inventor 李宇亮张喆徐帅朱棋马成李彦宝周雪佩
Owner CHANGAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com