Magnetic solid chelating adsorption material and preparation method thereof

A chelation adsorption and magnetic technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve the problems of short service life, small adsorption capacity, high manufacturing cost, etc., to improve stability, The effect of reducing interference and uniform coating on the surface

Active Publication Date: 2018-05-15
HUNAN UNIV OF SCI & TECH
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most adsorption materials mainly have the following problems: ①The adsorption capacity is not large; ②The manufacturing cost i...

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
  • Magnetic solid chelating adsorption material and preparation method thereof
  • Magnetic solid chelating adsorption material and preparation method thereof
  • Magnetic solid chelating adsorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Get 2.0g of ferric oxide microspheres with an average particle size of 430nm and 100mL of absolute ethanol into a 250mL three-necked flask with a dropping funnel, reflux condenser and mechanical stirring, then add 4.00g of quality Triethylenetetramine with a percentage concentration of 95.0%, mechanically stirred for 3 hours with the aid of ultrasonic waves. Raise the temperature to 60°C, and slowly add 2.4 mL of epichlorohydrin with a concentration of 99.0% by mass dropwise. After the dropwise addition, continue to react for another 3 h, cool to room temperature, and then adsorb and separate the solid matter with a magnet.

[0028](2) Transfer the solid matter separated in step (1) into a 250mL three-necked flask with a dropping funnel, a reflux condenser and a mechanical stirrer, add 100mL toluene, and ultrasonically assisted mechanically stir for 3h, then pass through the dripping Slowly add a 5.0% chloroform solution prepared by 0.36mL glutaraldehyde into the fu...

Embodiment 2

[0031] (1) Get 2.0g of ferric oxide microspheres with an average particle size of 340nm and 90mL of absolute ethanol and join them in a 250mL three-necked flask with a dropping funnel, reflux condenser and mechanical stirring, then add 4.50g of quality Triethylenetetramine with a percentage concentration of 95.0%, mechanically stirred for 2.5 hours with the aid of ultrasonic waves. Raise the temperature to 55°C, slowly add 2.6mL of epichlorohydrin with a mass percent concentration of 99.0% dropwise, and continue the reaction for 2.5h after the dropwise addition, cool to room temperature, and then adsorb and separate the solid matter with a magnet.

[0032] (2) transfer the solid matter separated in step (1) into a 250mL three-necked flask with a dropping funnel, a reflux condenser and a mechanical stirrer, add 90mL toluene, and ultrasonically assisted mechanically stir for 2h, then pass the dripping Slowly add 7.0% chloroform solution prepared by 0.33mL glutaraldehyde into the...

Embodiment 3

[0035] (1) Get 2.0g of ferric oxide microspheres with an average particle size of 218nm and 80mL of absolute ethanol into a 250mL three-necked flask with a dropping funnel, reflux condenser and mechanical stirring, then add 5.00g of quality Triethylenetetramine with a percentage concentration of 95.0%, mechanically stirred for 3 hours with the aid of ultrasonic waves. The temperature was raised to 50°C, and 2.97 mL of epichlorohydrin with a concentration of 99.0% by mass was slowly added dropwise. After the dropwise addition was completed, the reaction was continued for another 3 h, cooled to room temperature, and then the solid matter was adsorbed and separated by a magnet.

[0036] (2) Transfer the solid matter separated in step (1) into a 250mL three-necked flask with a dropping funnel, a reflux condenser and a mechanical stirrer, add 100mL toluene, and ultrasonically assisted mechanically stir for 3h, then pass through the dripping Slowly add a 10.0% chloroform solution pr...

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 magnetic solid chelating adsorption material and a preparation method thereof. The preparation method comprises the following steps: firstly, polymerizing epoxy chloropropane and triethylene tetramine in the presence of a ferroferric oxide microsphere to form a linear polymer chain, and performing in situ adsorption and winding on the surface of the ferroferric oxide microsphere; then, performing dispersion in toluene, and adding glutaraldehyde to enable the polymer chain to be further crosslinked so as to be stably covered on the surface of the ferroferric oxide microsphere; and in an aqueous solution, enabling carbon disulfide to react with an active amino group or imino group on the polymer chain under the catalysis of sodium hydroxide to modify a dithio-formyl group on the surface of the ferroferric oxide to generate the magnetic solid chelating adsorption material. The magnetic solid chelating adsorption material and the preparation method thereof provided by the invention have the advantages that active groups such as the ditho-formyl group, the amino group, the imino group and a hydroxyl group are effectively modified on the surface of the ferroferric oxide microsphere, capture and adsorption capabilities to heavy metals are greatly enhanced, the magnetic separation performance is excellent, the subsequent separation is convenient, continuous operation of adsorption and separation can be realized, and industrial application and popularization are facilitated.

Description

technical field [0001] The invention relates to the field of heavy metal wastewater treatment, in particular to a magnetic solid chelating adsorption material and a preparation method thereof. Background technique [0002] Due to the rapid development of industry and urbanization, the excessive release of heavy metals into the environment has caused a major environmental problem on a global scale. Unlike most organic pollutants that can be degraded into harmless substances, heavy metals cannot be biodegraded, and can eventually accumulate in the human body through the food chain and eventually produce cumulative poisoning. Therefore, they seriously endanger people's health. Metal plating, mineral mining, tanning, chlor-alkali industry, radiator manufacturing, smelting, alloy and battery manufacturing, etc. will produce a large amount of wastewater containing various heavy metals, such as cadmium, chromium, arsenic, copper, mercury, nickel, Antimony, lead, manganese and zinc...

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): B01J20/22B01J20/28C02F1/28C02F101/20
CPCB01J20/06B01J20/22B01J20/28009C02F1/288C02F2101/20
Inventor 刘立华赵露杨正池周智华唐安平薛建荣
Owner HUNAN 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