Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Repairing agent for repairing radioactive contaminated soil and repairing use method of repairing agent

A soil remediation and remediation agent technology, applied in the field of soil remediation, can solve problems such as damage, secondary pollution, and insufficient removal of radionuclides, and achieve excellent decontamination efficiency, high practical value, and suitable for large-scale applications.

Inactive Publication Date: 2022-07-12
南京佳腾工程科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these methods, chemical remediation is widely used. However, the existing chemical remediation agents have certain shortcomings and limitations, such as insufficient removal of radionuclides, and damage to soil structure and fertility by cleaning with acid and alkaline solutions. Obviously, the secondary pollution caused by remediation residues in the soil, as well as the production of a large amount of radionuclide-containing waste water during the chemical remediation process, etc.

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
  • Repairing agent for repairing radioactive contaminated soil and repairing use method of repairing agent

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0036] 1kg of chitosan was dissolved in 15kg of 1wt% acetic acid, stirred at room temperature for 6h; then 0.25kg of succinic anhydride dissolved in 1kg of acetone was added, and the reaction was stirred at room temperature for 10h; then, 1N was added to the mixture at room temperature The pH value was adjusted to 7-8 with NaOH, and stirred for 8 h; the reaction mixture was dialyzed with deionized water for 2 days using a dialysis bag with a molecular weight cut-off of 3500 Da, the dialysate was distilled under reduced pressure to remove the solvent, and then freeze-dried to obtain succinic acid-modified chitosan Sugar 0.8Kg.

Embodiment 1-3

[0038] Add 60 g of diethylene triamine penta(methylene phosphonic acid), 120 g of succinic acid-modified chitosan of Preparation Example 1, 60 g of sodium metaaluminate, and 160 g of concentrated hydrochloric acid (37%) into 600 g of deionized water , heated to 35° C. under stirring to dissolve completely, and after cooling, diluted to 1 / 8, 1 / 5, and 1 / 4 of the original concentration, respectively, to obtain the repairing agent of Example 1-3.

Embodiment 4

[0040] Add 12g of diethylenetriamine penta(methylenephosphonic acid), 36g of succinic acid-modified chitosan of Preparation Example 1, 12g of sodium metaaluminate, and 32g of concentrated hydrochloric acid (37%) into 908g of deionized water , heated to 35° C. under stirring to dissolve completely, and after cooling, the repairing agent of Example 4 was obtained.

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

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a repairing agent for repairing radioactive contaminated soil and a repairing use method of the repairing agent. The repairing agent can clean away radionuclides in the radioactive contaminated soil and repair the radioactive contaminated soil, and the radionuclides can be easily precipitated from the cleaning solution, so that the effect of separating and enriching the radionuclides from the soil is achieved, the soil is repaired, and the radionuclides can be treated in a centralized mode. The repairing agent disclosed by the invention has relatively high practical value and is suitable for large-scale application.

Description

technical field [0001] The present invention relates to the field of soil remediation, in particular to a remediation agent for the remediation of radioactively polluted soil, and also to a method of using the remediation agent for restoration. Background technique [0002] Radioactive contaminated soil refers to soil contaminated by radioactive pollutants. Soil includes natural radioactive sources and man-made radioactive sources. Natural radioactive sources are those in natural products 40 K. 238 U. 226 Ra, 232 Elements such as Th undergo radioactive decay to produce a series of radioactive daughters, which are widely distributed in rock or soil environments. These radioactive elements form the background value of soil radioactivity, but because the dose is very low, it will not affect normal production and life. Man-made radioactive sources are the main sources of soil radioactive pollution, which mainly include pollution caused by nuclear tests, radioactive isotope...

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 Applications(China)
IPC IPC(8): B09C1/08B09C1/02C09K17/40
CPCB09C1/08B09C1/02C09K17/40
Inventor 缪晶晶陈建军
Owner 南京佳腾工程科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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