Compound heavy metal adsorbent and preparation method thereof
An adsorbent and heavy metal technology, applied in the field of composite heavy metal adsorbent and its preparation, can solve the problems of limited adsorption capacity, influence adsorption efficiency, etc., and achieve the effects of reducing sensitivity, improving adsorption performance, and facilitating recycling.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0041] According to another aspect of the present invention, a method for preparing the above heavy metal adsorbent is also provided, such as figure 1 As shown, including the following steps:
[0042] (1) Disperse the floating nucleus uniformly in the solution of the composite polymer to obtain a dispersion, so that the mass ratio of the floating nucleus and the composite polymer in the dispersion is (1 to 5):1; the composite polymer includes The mass ratio of the modified chitosan and sodium alginate is 5:1~1:5, the modified group of the modified chitosan is a small molecule chelating agent, and the shell substituted by the small molecule chelating agent The proportion of amino groups of glycans is more than 30%;
[0043] Then the dispersion liquid can be stirred at 20℃~40℃ for 3h~8h, and treated with ultrasound for 20min~40min to accelerate the removal of bubbles in the reaction solution;
[0044] (2) Drop the dispersion into 0.045M~0.9M Ca 2+ Soak in the solution for 3h-24h to co...
Example Embodiment
[0054] Example 1
[0055] (0) Preparation of raw materials
[0056] (0-1) Activation of floating core: According to the ratio of solid to liquid (w / w) of 1:200, the average density is 0.30mg / cm 3 、Hollow glass beads with an average particle size of 40μm are dispersed in distilled water, and after stirring for 3 hours, the water-soluble impurities adsorbed on the surface of the hollow glass beads are cleaned, and the hollow glass beads can be filtered out that can float on the water. , Dried at 50°C for later use; disperse the selected hollow glass beads into 0.1M HCl aqueous solution and stir for 10 hours, rinse the hollow glass beads with distilled water until the distilled water flowing out of the washing is close to neutral, and then dry at 50°C Obtain activated hollow glass beads;
[0057] (0-2) Preparation of EDTA-modified chitosan: First, disperse a certain quality of EDTA solid powder in distilled water, and add a small amount of sodium hydroxide to control the pH of the solu...
Example Embodiment
[0072] Example 2
[0073] (0) Preparation of raw materials
[0074] (0-1) Activation of floating core: According to the ratio of solid-liquid ratio (w / w) of 1:200, the average density is 0.45mg / cm 3 , Fly ash float beads with an average particle size of 105μm are dispersed in distilled water, and after stirring for 3 hours, the water-soluble impurities adsorbed on the surface of the fly ash float beads will be cleaned, stand still and layered, and the fly ash floating on the water will be screened out. The ash bleaching beads are dried at 50°C for later use; the sieved fly ash bleaching beads are dispersed into a 2% dilute nitric acid solution and stirred for 3 hours, then the ash bleaching beads are rinsed and acid treated with distilled water until the distilled water flowing out of washing is close to neutral , Dry at 50℃ for later use;
[0075] (0-2) Preparation of DTPA-modified chitosan: Weigh a certain quality of DTPA solid powder and disperse in distilled water, add a small a...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Density | aaaaa | aaaaa |
The inside diameter of | 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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap