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

Cerium oxide loaded calcium peroxide composite material, water body disinfectant and disinfection method

A technology of calcium peroxide and composite materials, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, disinfectant, etc., can solve the problem of unclear evaluation of sterilization types and evaluation of sterilization and detoxification effects Incomplete, unclear evaluation of the bactericidal action mechanism, etc., to achieve a significant killing effect, easy to store, and convenient to use

Active Publication Date: 2022-04-08
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there are some reports on the disinfection of water bodies with calcium peroxide, these studies have not fully evaluated the bactericidal and detoxifying effects of CaO2, and the evaluation of the types of bacteria is not clear, and the evaluation of the mechanism of bactericidal action is still unclear

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
  • Cerium oxide loaded calcium peroxide composite material, water body disinfectant and disinfection method
  • Cerium oxide loaded calcium peroxide composite material, water body disinfectant and disinfection method
  • Cerium oxide loaded calcium peroxide composite material, water body disinfectant and disinfection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment prepares the calcium peroxide composite material supported by cerium oxide, and the preparation method is:

[0041] (1) Get 5.0g cerium chloride and dissolve it in 200mL ultrapure water, then use oxalic acid to adjust the pH=2 of the solution, then take out 30mL saturated ammonia water and dissolve it in 20mL ultrapure water to make a dilute ammonia solution, and turn it at 400 rpm Slowly add ammonia solution dropwise to the cerium chloride solution under the rotating speed of 100°C. After reacting for 1 hour, put the solution containing the white precipitate in a water bath at 90°C to mature for 3 hours, then filter and separate, wash with water twice, and then remove it at 110°C Drying at 900°C and then calcining at 900°C to obtain ceria.

[0042] (2) Take 0.5g of cerium oxide, disperse it in 40mL of ultrapure water, then weigh 3.5g of CaCl 2 , was added to the above solution, and then 25 mL of 30% H 2 o 2 , Add 10 mL of saturated ammonia water drop...

Embodiment 2

[0044] This embodiment prepares the calcium peroxide composite material supported by cerium oxide, and the preparation method is:

[0045] (1) Get 6.0g of cerium chloride and dissolve it in 250mL ultrapure water, then use oxalic acid to adjust the pH=2.5 of the solution, then take out 35mL saturated ammonia water and dissolve it in 20mL ultrapure water to make a dilute ammonia solution, at 400 rpm Slowly add the aqueous ammonia solution to the cerium chloride solution at a high speed, react for 1 hour, place the solution containing the white precipitate in a water bath at 95°C for aging for 2 hours, then filter and separate, wash with water three times, Drying at 950°C and then calcining to obtain cerium dioxide.

[0046] (2) Take 0.6g of cerium oxide, disperse it in 45mL of ultrapure water, then weigh 4g of CaCl 2 , was added to the above solution, and then 30 mL of 30% H 2 o 2 , Add 15 mL of saturated ammonia water dropwise while stirring, and then cool in ice water for h...

Embodiment 3

[0048] This embodiment prepares the calcium peroxide composite material supported by cerium oxide, and the preparation method is:

[0049] (1) Get 3.0g cerium chloride and dissolve it in 150mL ultrapure water, then use oxalic acid to adjust the pH=1.5 of the solution, then take out 25mL saturated ammonia water and dissolve it in 10mL ultrapure water to make dilute ammonia solution, at 400 rpm Slowly add ammonia solution dropwise to the cerium chloride solution under the rotating speed of 100°C. After reacting for 1 hour, put the solution containing the white precipitate in a water bath at 85°C for aging for 4 hours, then filter and separate, wash with water twice, and place it at 105°C Dry at 910°C and then calcined to obtain cerium dioxide.

[0050] (2) Take 0.3g of cerium oxide, disperse it in 35mL of ultrapure water, then weigh 2g of CaCl 2 , was added to the above solution, and then 20 mL of 30% H 2 o 2 , Add 8 mL of saturated ammonia water dropwise while stirring, and ...

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a cerium oxide loaded calcium peroxide composite material. The cerium oxide loaded calcium peroxide composite material comprises cerium dioxide serving as a carrier and calcium peroxide attached to the cerium dioxide. The essence of the invention is to provide a novel environment-friendly water body disinfectant which can effectively inactivate pathogenic bacteria including staphylococcus aureus and escherichia coli, improve water quality and improve drinking safety of tap water. The cerium oxide loaded calcium peroxide composite material disclosed by the invention has the advantages of being green, safe, easy to store, convenient to use and the like, can be further strengthened to generate reactive oxygen free radicals in the sun, has a remarkable killing effect on pathogenic bacteria, other pathogenic microorganisms and the like in a water body, does not generate any toxic and harmful polluting products after being used, and has a good application prospect. And the use environment is burden-free. The invention also relates to a water body disinfectant containing the cerium oxide loaded calcium peroxide composite material.

Description

technical field [0001] The invention relates to water body disinfection products, in particular to a calcium peroxide composite material loaded with cerium oxide, a water body disinfectant and a disinfection method. Background technique [0002] Drinking water in a considerable part of our country comes from shallow wells and rivers, and water disinfection is very important. At present, tap water in many areas is limited to sedimentation, filtration, chlorination and other processes, and surface river water or groundwater is processed into tap water. Although chlorination can effectively disinfect, it will produce chlorinated hydrocarbon compounds, and chlorinated organic compounds are hidden dangers of gastrointestinal cancer in human patients. Finding a green and efficient alternative water disinfection method will reduce the use of chlorine in water disinfection. [0003] At present, the commonly used disinfection methods in domestic large and medium-sized urban sewage ...

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): A01N59/06A01P1/00B01J23/10C02F1/50C02F1/72
Inventor 裘文慧张舒雯郑明郑春苗陈红红
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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