Mg-Fe bimetal hydroxide adsorbent and preparation method and application thereof
A hydroxide and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of slow adsorption rate, uranium adsorption, poor adsorption effect, etc., and achieve the adsorption rate Fast, large adsorption capacity, effective adsorption effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0030] The embodiment of the present invention also provides a method for preparing the Mg-Fe double metal hydroxide adsorbent, which includes: performing a hydrothermal reaction between the iron-magnesium mixture formed by mixing the iron salt and the magnesium salt and the hydroxide solution, and Centrifugal separation. Magnesium ions and iron ions form Mg-Fe double-layer hydroxide under alkaline hydrothermal conditions, spreading magnesium hydroxide on the surface of iron hydroxide, and fully exposing the physical defect sites and chemically active sites of magnesium hydroxide. To promote the adsorption of uranyl ions in wastewater.
[0031] Specifically, the iron salt is selected from any one of iron chloride, iron nitrate and iron sulfate, preferably iron chloride, more preferably iron chloride hexahydrate; similarly, the magnesium salt is selected from magnesium chloride, magnesium nitrate and magnesium sulfate Any one of them is preferably magnesium chloride, and more pre...
Example Embodiment
[0040] Example 1
[0041] This embodiment provides a method for preparing a Mg-Fe double metal hydroxide adsorbent, which includes the following steps:
[0042] Ferric nitrate and magnesium nitrate are dissolved in deionized water to obtain an iron-magnesium mixture, wherein the molar ratio of Mg / Fe is 3:1, and the total concentration of magnesium ions and iron ions in the iron-magnesium mixture is 0.07 mol / L. Pour the iron and magnesium mixture into the hydrothermal reaction lining, and add 0.5 mol / L NaOH solution (the total amount is excessive relative to the molar amount of iron and magnesium ions) to make the pH of the system 10. Put the inner lining in an autoclave for 100 minutes at 160°C and 5.5Mpa. After the reaction is over, take it out, centrifuge and wash until the supernatant is neutral, and the obtained solid is freeze-dried at -40°C for 10 hours and dried for use.
[0043] This embodiment also provides a method for treating uranium-containing wastewater, using the ads...
Example Embodiment
[0044] Example 2
[0045] This embodiment provides a method for preparing a Mg-Fe double metal hydroxide adsorbent, which includes the following steps:
[0046] Dissolve ferric chloride hexahydrate and magnesium chloride hexahydrate in deionized water to obtain an iron-magnesium mixture, wherein the molar ratio of Mg / Fe is 5:1, and the total concentration of magnesium ions and iron ions in the iron-magnesium mixture is 0.012mol / L . Pour the iron and magnesium mixture into the hydrothermal reaction lining, and add 1.5 mol / L NaOH solution (the total amount is excessive relative to the molar amount of iron and magnesium ions) to make the pH of the system 13. Put the inner lining in an autoclave and react for 150 minutes at 200°C and 6.5Mpa. After the reaction is over, take it out, centrifuge and wash until the supernatant is neutral, and freeze-dry the obtained solid at -60°C for 14 hours and dry it for later use.
[0047] This embodiment also provides a treatment method for uranium-...
PUM
Property | Measurement | Unit |
---|---|---|
Saturated adsorption capacity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap