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

A magnetic nanoparticle based on alkali lignin, its preparation method and its application in the adsorption of copper ions

A technology of magnetic nanoparticles and alkali lignin, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve few problems such as preparation methods and application reports of alkali lignin modified magnetic nanoparticles, and achieve a combination Strong power, low price, and the effect of improving adsorption performance

Active Publication Date: 2020-07-28
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the application of lignin surfactants involves a wide range of industries, only about 1 million tons of lignin is developed into commercial products every year, especially there are few preparation methods and application reports on the use of alkali lignin to modify magnetic nanoparticles

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
  • A magnetic nanoparticle based on alkali lignin, its preparation method and its application in the adsorption of copper ions
  • A magnetic nanoparticle based on alkali lignin, its preparation method and its application in the adsorption of copper ions
  • A magnetic nanoparticle based on alkali lignin, its preparation method and its application in the adsorption of copper ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dissolve 2.5g of ferrous sulfate and 3g of ferric chloride in 100mL of water, transfer to a four-neck flask, heat up to 85°C under mechanical stirring, slowly drop into 10g of 25% ammonia solution at a rate of 1 drop / second. After the dropwise addition, heat preservation and aging for 3h. After dissolving 2g of wheatgrass lignin into 10g of aqueous solution, drop it into the above reaction system together with 10g of absolute ethanol at the same time, the dropping speed is 1 drop / second, and keep stirring for 2 hours after the dropping is completed. Finally, the magnetic particles are separated by a permanent magnet, washed three times with ethanol, and vacuum-dried at 60° C. to obtain alkali lignin magnetic nanoparticles. Its performance test, the results are as follows.

[0042] Add 1 g of alkali lignin magnetic nanoparticles to 100 mL of Cu with a concentration of 0.05 mol / L 2+ solution, placed on a shaker at a fixed speed at 20°C and oscillated for adsorption. Af...

Embodiment 2

[0049] Dissolve 5g of ferrous sulfate and 6g of ferric chloride in 100mL of water, transfer to a four-necked flask, heat up to 95°C under mechanical stirring, and slowly add 20g of 25% ammonia solution dropwise at a rate of 1 drop / second. After the dropwise addition, heat preservation and aging for 4h. After dissolving 5g of poplar alkali lignin into 20g of aqueous solution, drop it into the above reaction system together with 25g of methanol at the same time, the dropping speed is 1 drop / second, and keep stirring for 1 hour after the dropping is completed. Finally, the magnetic particles are separated by a permanent magnet, washed three times with ethanol, and vacuum-dried at 50° C. to obtain alkali lignin magnetic nanoparticles.

[0050] Add 1 g of alkali lignin magnetic nanoparticles to 100 mL of Cu with a concentration of 0.05 mol / L 2+ solution, placed on a shaker at a fixed speed at 20°C and oscillated for adsorption. After the adsorption is completed, magnetically sepa...

Embodiment 3

[0052] Dissolve 3g of ferrous sulfate and 5g of ferric chloride in 100mL of water, transfer to a four-necked flask, heat up to 75°C under mechanical stirring, slowly drop into 15g of 25% ammonia solution at a rate of 1 drop / second. After the dropwise addition, heat preservation and aging for 2.5 hours. After dissolving 4g of pine alkali lignin into 20g of aqueous solution, drop it into the above reaction system together with 20g of n-propanol at the same time, the dropping rate is 1 drop / second, and keep stirring for 3 hours after the dropping is completed. Finally, the magnetic particles are separated by a permanent magnet, washed three times with ethanol, and vacuum-dried at 70° C. to obtain alkali lignin magnetic nanoparticles.

[0053] Add 1 g of alkali lignin magnetic nanoparticles to 100 mL of Cu with a concentration of 0.05 mol / L 2+ solution, placed on a shaker at a fixed speed at 20°C and oscillated for adsorption. After the adsorption is completed, magnetically sepa...

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
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of a magnetic adsorbent, and discloses a magnetic nanoparticle based on alkali lignin, a preparation method of the magnetic nanoparticle and application ofthe magnetic nanoparticle to copper ion adsorption. The method comprises the following steps that ferrous sulfate and ferric chloride are dissolved in water; preheating is performed; ammonia water isdropwise added; heat insulation curing is performed for 2 to 3h at 75 to 95 DEG C; an alkali lignin solution and short chain alcohol are added into a system; heat insulation stirring is performed for1 to 3h; separation and drying are performed; the magnetic nanoparticle based on alkali lignin is obtained. The alkali lignin with rich resource is used as a carbon supply source; the cost is low; the production cost of a magnetic material is reduced; the entrapment quantity of the alkali lignin on the magnetic particle surface is controlled, particularly the magnetic nanoparticle diameter is regulated and controlled, so that the adsorption performance on copper ions is improved; the obtained magnetic nanoparticle based on the alkali lignin has the advantages of strong bonding force, great entrapment quantity and high copper ion adsorption capability; the magnetic nanoparticle can be applied to the copper ion adsorption.

Description

technical field [0001] The invention belongs to the technical field of magnetic adsorbents, in particular to a magnetic nanoparticle based on alkali lignin, a preparation method thereof and an application in absorbing copper ions. Background technique [0002] Magnetic nanomaterials have broad application prospects in the fields of adsorption, catalysis, drug carriers, and biomedicine, but the premise of their application is the modification of functional polymers on the particle surface. Many research groups at home and abroad have successfully tried this, and the main modification methods include adsorption and in situ synthesis. [0003] After some polymer materials are uniformly mixed with nanoparticles, these polymers and the surface of nanoparticles can be charged oppositely by adjusting the pH value of the solution, and the polymer can be adsorbed on the surface of nanoparticles by electrostatic attraction. Peng et al. studied Fe at different pH values ​​and salt con...

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 Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30
CPCB01J20/24B01J20/28009B01J20/28016B01J2220/4837
Inventor 郑大锋管文康邱学青杨东杰莫振业
Owner SOUTH CHINA UNIV OF 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