Restoring method for soil polluted by acephate pesticide

A technology for pesticide-contaminated soil and acephate, which is applied in the field of remediation of organic-contaminated soil, can solve problems such as soil pollution, and achieves the effects of low cost, simple and easy method, and complete remediation.

Inactive Publication Date: 2013-03-27
SUZHOU UNIV OF SCI & TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for remediating soil contaminated by acephate pesticides to solve the problem of soil pollution by acephate

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 98g of soil into a 500ml beaker, add 2g of CaO, and mix well. Then add 80ml of acephate concentration of 750mg / L solution, stir evenly to obtain soil containing acephate concentration of 333.3mg / Kg. After 3 hours, the acephate in the soil was extracted with dichloromethane, and its content was measured with 4-(4-nitrobenzyl)pyridine as a color reagent. The degradation rate of acephate was above 97%.

Embodiment 2

[0025] Weigh 95g of soil into a 500ml beaker, add 5g of CaO, and mix well. Then add 80ml of acephate concentration of 750mg / L solution, stir evenly to obtain soil containing acephate concentration of 333.3mg / Kg. After 3 hours, the acephate in the soil was extracted with dichloromethane, and its content was measured with 4-(4-nitrobenzyl)pyridine as a chromogen. The degradation rate of acephate was above 98%.

Embodiment 3

[0027] Add 2Kg of soil with acephate concentration of 333.3mg / kg, and add enough water to just submerge the soil, insert a graphite electrode at room temperature and apply a constant voltage to make the potential gradient 1.5V / cm, for 10 Every other day, samples were taken at the anode area, the middle point and the cathode area to analyze the concentration of acephate. And after every 48 hours, the positive electrode and the negative electrode are reversed, and the cathode area is made alkaline by means of the electrochemical electrolysis reaction, and the acephate is degraded by the hydroxide generated by the cathode electrochemical reaction. After the electrode is adjusted, the original acidic anode area is transformed into alkaline, thereby degrading acephate. After 10 days, the average degradation rate of acephate at each site was above 90%.

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 restoring method for soil polluted by acephate pesticide. The restoring method comprises the steps that alkaline substances and/or substances capable of generating hydroxy radicals through a reaction with water and/or are added into the soil polluted by the acephate pesticide, and/or the soil polluted by the acephate pesticide is treated by an electrochemical method, so that enough hydroxy radicals are added into the soil and are subjected to degradation reaction with the acephate in the soil, further the acephate is removed, and the restoring of the soil is realized. According to the restoring method, the molecular structure of the acephate can be destroyed effectively, so that the acephate in the soil is removed thoroughly, and the polluted soil can be restored completely, the method is simple and easy to implement, the cost is low, and the large-scale implantation is facilitated.

Description

technical field [0001] The invention relates to a method for repairing soil polluted by organic matter, in particular to a method for repairing soil polluted by acephate pesticides. Background technique [0002] Acephate (Acephate), the chemical name is O, S-dimethyl, N-acetylthiophosphoramide. It is a broad-spectrum insecticide, suitable for vegetables, tea trees, tobacco, fruit trees, cotton, rice, wheat, rapeseed and other crops to control a variety of chewing, piercing and sucking mouthpart pests, mites and sanitary pests. The application is very extensive. In recent years, with the prohibition of methamidophos pesticide in my country, the use of acephate has become more and more extensive. The ensuing pollution is also more prominent. Leakage of acephate during production and storage, and improper use can cause human and animal poisoning. [0003] Acephate is very stable under slightly acidic and neutral conditions, especially under water and soil conditions where a...

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): B09C1/08
Inventor 刘守清裴晓哲
Owner SUZHOU UNIV OF SCI & TECH
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap