Unlock instant, AI-driven research and patent intelligence for your innovation.

PAC-Fe3O4/MnO2 magnetic activated carbon and preparation method thereof

A magnetic activated carbon, pac-fe3o4 technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the problems of high treatment cost, difficult recovery, limited application, etc., to solve difficult separation, saturated The effect of increasing the adsorption capacity and facilitating the promotion and application

Inactive Publication Date: 2017-01-04
SHENYANG JIANZHU UNIVERSITY
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But MnO 2 The apparent density (apparent density) is low, and there are also disadvantages such as difficult separation, difficult recycling, and high processing costs, which limit its application in water treatment.

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
  • PAC-Fe3O4/MnO2 magnetic activated carbon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A PAC-Fe 3 o 4 / MnO 2 Magnetic activated carbon, made of nano-Fe 3 o 4 and nano MnO 2 Composite magnetic material and PAC composition, the composite magnetic material loaded on the surface of PAC, PAC: Fe 3 o 4 : MnO 2 The mass ratio is 4:4:1.

[0021] Its preparation steps are as follows:

[0022] a. Immerse PAC in ultrapure water for 24 hours for pretreatment, and dry the treated PAC in an oven at 110°C for 10 hours;

[0023] b. Accurately weigh 12.51g FeSO with an electronic balance 4 ·7H 2 O or 8.955g FeCl 2 4H 2 Dissolve O in 200ml of ultrapure water at room temperature, then add 20ml of NaOH with a concentration of 5mol / L; after the blue-green flocs appear, stir quickly with a glass rod, and add 100ml of KMnO with a concentration of 0.1mol / L 4 , while continuing to stir; then add 3.48g of PAC to the solution, keep stirring while adding PAC, and react for 4h;

[0024] c. After the reaction, the mixture was left to stand for 10 minutes, the supernatant...

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 relates to the field of water treatment, in particular to PAC-Fe3O4 / MnO2 magnetic activated carbon and a preparation method thereof. According to the technical scheme, the PAC-Fe3O4 / MnO2 magnetic activated carbon is prepared from a composite magnetic material of nano-Fe3O4 and nano-MnO2 and PAC, wherein the composite magnetic material is loaded on the surface of PAC, and the mass ratio of PAC to Fe3O4 to MnO2 is (1.5-6):4:1. The invention further provides a preparation method of the PAC-Fe3O4 / MnO2 magnetic activated carbon. According to the preparation method, a reaction is completed in a reaction system through a coprecipitation method by taking PAC as a carrier and taking NaOH as a precipitant. The PAC-Fe3O4 / MnO2 magnetic activated carbon has the high adsorption capacity and the oxidation capacity, is easy to separate and recycle after being used and cannot cause secondary pollution.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a PAC-Fe 3 o 4 / MnO 2 Magnetic activated carbon and its preparation method. Background technique [0002] Adsorption is a mature and easy-to-operate water treatment method, which is currently widely used in the treatment of organic wastewater and heavy metal wastewater. The commonly used adsorbents for the treatment of these two types of wastewater by adsorption method are activated carbon and manganese dioxide. There are two types of activated carbon used in water treatment, powdered activated carbon (PAC) and granular activated carbon (GAC). Powdered activated carbon has a large specific surface area and developed pore structure, and has strong adsorption properties for target pollutants. It is widely used in the field of water treatment, but powdered activated carbon has the disadvantages of difficult separation, difficult recovery and high treatment cost. At present, my co...

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
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/72
CPCB01J20/06B01J20/20B01J20/28009C02F1/28C02F1/72
Inventor 刘军杜茹男由昆袁雅姝郭慧宇
Owner SHENYANG JIANZHU UNIVERSITY