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

Preparation method and use of loading activated carbon

A technology of activated carbon and application, applied in the field of preparation of loaded activated carbon, which can solve the problems of interference, the effectiveness of removing organic matter cannot be guaranteed, and the effect is minimal, and achieve the effects of long life, low cost and easy operation

Inactive Publication Date: 2012-11-28
EAST CHINA UNIV OF SCI & TECH
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is effective for light non-aqueous phase liquid pollutants but has little effect on heavy non-aqueous phase liquid pollution, and the complex behavior of organic pollutants in groundwater often introduces interference, resulting in the pumping treatment method is not always effective
Therefore, the extraction treatment method is affected by many factors, and its effectiveness in removing organic matter cannot be guaranteed.

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

[0036] 1. Pretreatment: Grind the activated carbon to 10-20 mesh, wash with deionized water to remove impurities in the activated carbon, until the supernatant is clear and transparent, adjust the pH value to 6.2.

[0037] 2. FeSO 4 .7H 2 O and polyethylene glycol PEG-4000 were dissolved in the mixed system of ethanol and water, wherein the volume ratio of ethanol and water was 4:6; FeSO 4 .7H 2 The mass fraction of O relative to ethanol and water is 6.5%-10%, and the mass fraction of polyethylene glycol PEG-4000 relative to ethanol and water is 2.5%-5%. In the container, add 10g GAC again, stir evenly, at this moment pass nitrogen, remove the dissolved oxygen in the system. Weigh 1.71g of sodium borohydride and dissolve it in 100ml of deionized water to prepare a 0.45mol / L reducing solution. Under the conditions of continuous feeding of nitrogen into the system and mechanical stirring, slowly add the reducing solution through a peristaltic pump to control the dripping spee...

Embodiment 2

[0044] 1. Pretreatment: Grind the activated carbon to 20-40 mesh, wash with deionized water to remove impurities in the activated carbon, and adjust the pH value to 7 until the supernatant is clear and transparent.

[0045] 2. FeSO 4 .7H 2 O and polyethylene glycol PEG-4000 were dissolved in the mixed system of ethanol and water, wherein the volume ratio of ethanol and water was 4:6; FeSO 4 .7H 2 The mass fraction of O relative to ethanol and water is 5% to 10%, and the mass fraction of polyethylene glycol PEG-4000 relative to ethanol and water is 3.5% to 5%. In the container, add 10g GAC again, stir evenly, at this moment pass nitrogen, remove the dissolved oxygen in the system. Weigh 1.71g of sodium borohydride and dissolve it with 100ml of deionized water to prepare a 0.45mol / L reducing solution. Under the conditions of continuous feeding of nitrogen into the system and mechanical stirring, the reducing solution is slowly added through a peristaltic pump to control the d...

Embodiment 3

[0051] Example 3 (the format of the indentation of the first line below has been adjusted, and it is unified with examples 1 and 2)

[0052] 1. Pretreatment: Grind the activated carbon to 10-20 mesh, wash with deionized water to remove impurities in the activated carbon, until the supernatant is clear and transparent, adjust the pH value to 7.

[0053] 2. FeSO 4 .7H 2 O and polyethylene glycol PEG-4000 were dissolved in the mixed system of ethanol and water, wherein the volume ratio of ethanol and water was 4:6; FeSO 4 .7H 2 The mass fraction of O relative to ethanol and water is 5% to 10%, and the mass fraction of polyethylene glycol PEG-4000 relative to ethanol and water is 3% to 5%. In the container, add 10g GAC again, stir evenly, at this moment pass nitrogen, remove the dissolved oxygen in the system. Weigh 1.71g of sodium borohydride and dissolve it with 100ml of deionized water to prepare a 0.45mol / L reducing solution. Under the conditions of continuous feeding of n...

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 a preparation method and a use of loading activated carbon. The preparation method comprises the following steps of pre-treating raw coal activated carbon, grinding by a grinder, screening out activated carbon particles having sizes of 10 to 60 meshes, washing by deionized water until a supernatant does not contain obvious impurities, putting the washed activated carbon particles into an oven, drying at a temperature of 105 DEG C for 12 hours, weighing an appropriate amount of FeSO4.7H2O according to actual requirements, dissolving the FeSO4.7H2O in 100ml of an ethanol / water (40 / 60, v / v) mixed system, adding an appropriate amount of polyethylene glycol PEG-4000 as a dispersing agent into the mixed solution obtained by the previous step, adding an appropriate amount of the activated carbon particles into the mixed solution after full dissolution, dropwisely adding a sodium borohydride solution into the mixed solution with mechanical stirring in a nitrogen protective atmosphere for a reaction, and carrying out loading of a bimetal palladium after the reaction is finished to obtain the loading activated carbon. The loading activated carbon can be used for treating chlorinated hydrocarbon in ground water. The preparation method has the advantages that a process flow is simple; process equipment is simple; operation and management are easy; a cost is low; an investment is low; and chlorinated hydrocarbon removal efficiency is high.

Description

【Technical field】 [0001] The invention relates to the technical field of activated carbon, in particular to a preparation method and application of loaded activated carbon. 【Background technique】 [0002] Chlorinated aliphatic hydrocarbons (CAHs) are a kind of artificially synthesized organic substances with special odor that are seriously harmful to the human body and the environment. pollute. However, as an important class of chemical raw materials and organic solvents, it is widely used in the chemical industry, metal cleaning, electronic dismantling, pesticides and other industries. [0003] Activated carbon is a commonly used adsorbent. The raw materials used are wood, fruit stones, coal, petroleum and crops, etc., which are shaped and activated by appropriate methods. The shapes of activated carbon are powder, spherical, columnar and broken, and the activation methods include water vapor activation and zinc chloride activation. The activated carbon adsorption proces...

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): B01J23/89C02F1/28C02F1/58C02F101/36
Inventor 张巍刘诺韩晓琳林莉莉刘洋成左军贾楠吕树光林匡飞应维琪
Owner EAST CHINA UNIV OF SCI & TECH
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