Heavy metal ion adsorption carrier and preparation method thereof

A technology for heavy metal ions and adsorption carriers, applied in the direction of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problem of low adsorption efficiency and achieve good adsorption effect

Inactive Publication Date: 2010-12-01
DONGHUA UNIV
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials have the disadvantage of low adsorption efficiency

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

[0018] In the first step, polyvinyl acetate (Mn 500000) is dissolved in dimethylformamide to prepare a solution with a concentration of 11.5% (calculated in mass percent); then 1 gram of isopropoxytitanium and 0.5 gram of acetic acid Add to 5 grams of pre-prepared polyvinyl acetate solution and stir to form a homogeneous solution.

[0019] In the second step, the solution prepared in the first step is electrospun at room temperature. The fibers prepared by spinning were directly deposited on the copper grid to obtain the fiber film.

[0020] In the third step, heat the fiber membrane prepared in the second step to 120° C. and keep it for 30 minutes, and then apply a pressure of 8 MPa; then calcinate the prepared fiber membrane in a muffle furnace at 500° C. for one hour.

[0021] 1 gram of prepared inorganic nanoporous titanium dioxide fiber membrane was put into 5 liters of solution containing 200ppm lead ions. After using nanoporous titanium dioxide fiber membrane adsorbent...

Embodiment 2

[0023] In the first step, ethyl cellulose (Mn 97000) was dissolved in dimethylformamide / tetrahydrofuran (mass ratio 3 / 1) solution to prepare a solution with a concentration of 9% (calculated in mass percent); then 2 Add 1 gram of titanium dioxide nanoparticles (with a particle size of 10-100 nanometers, purchased from Aladdin.com as a commercial product) into 20 grams of ethyl cellulose solution, and stir to form a homogeneous solution.

[0024] In the second step, the solution prepared in the first step is electrospun at room temperature. The fibers prepared by spinning were directly deposited on the copper grid to obtain the fiber film.

[0025] In the third step, the organic / inorganic titanium dioxide hybrid fiber prepared in the second step is heated to 120°C and kept for 20 minutes, and then a pressure of 1MPa is applied; then the prepared fiber membrane is calcined in a muffle furnace at 400°C One hour.

[0026] Put 1 gram of the prepared inorganic nanoporous titanium ...

Embodiment 3

[0028] The first step, polybutylene succinate (Mn 20000) is dissolved in methylene chloride / chloroform (mass ratio 3 / 1) solution, is mixed with the solution that concentration is 12% (calculated by mass percentage) ; Then 2 grams of titanium dioxide nanoparticles (particle size is 10-100 nanometers, purchased in the form of Aladdin net goods) are added to 20 grams of ethyl cellulose solution, stirred to form a homogeneous solution.

[0029] In the second step, the solution prepared in the first step is electrospun at room temperature. The fibers prepared by spinning were directly deposited on the copper grid to obtain the fiber film.

[0030] In the third step, the organic / inorganic titanium dioxide hybrid fiber prepared in the second step is heated to 90°C and kept for 60 minutes, and then a pressure of 10MPa is applied; then the prepared fiber membrane is calcined in a muffle furnace at 500°C One hour.

[0031] Put 1 gram of the prepared inorganic nanoporous titanium dioxi...

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
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a heavy metal ion adsorption carrier and a preparation method thereof. The heavy metal ion adsorption carrier is characterized by consisting of an inorganic nano-porous titanium dioxide fiber membrane. The preparation method is characterized by comprising the following specific steps of: dissolving a hydrophobic polymer in a solvent, adding titanium dioxide nanoparticles or a soluble titanium salt and stirring to form uniform solution; performing electrostatic spinning on the solution at room temperature and directly depositing fibers prepared by the electrostatic spinning on a receiving material to obtain the fiber membrane; and performing hot pressing on the fiber membrane for 20 to 60 minutes at the temperature of between 90 and 120 DEG C under the pressure of between 1 and 10Mpa, and then calcining at the temperature of between 400 and 500 DEG C to remove organic components from the fibers so as to obtain the inorganic nano-porous titanium dioxide fiber membrane serving as the heavy metal ion adsorption carrier. The heavy metal ion adsorption carrier has the advantage of good adsorption effect on heavy metal ions.

Description

technical field [0001] The invention relates to a heavy metal ion adsorption carrier and a preparation method thereof, belonging to the application field of new textile materials. Background technique [0002] With the rapid development of industry, the waste discharged in the process of industrial production is increasingly endangering people's life and health, especially the massive discharge of industrial and mine waste water. These wastes contain heavy metals, causing serious pollution of surface water bodies. Once heavy metals enter the environment, they cannot be biodegraded. They can remain latent in the environment for a long time and enter the human body along with the food chain. They accumulate in the human body, causing various diseases and dysfunction, and endangering human health. [0003] Many existing methods, such as precipitation, electroflotation, reverse osmosis, etc., and ion exchange resin methods can be used to remove heavy metal ions from industrial ...

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): B01J20/28B01J20/06B01J20/30
Inventor 丁彬林金友俞建勇孙刚
Owner DONGHUA UNIV
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