Preparation method of sodium alginate-cyclodextrin based material for treating metal processing wastewater
A sodium alginate and metal processing technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of slow adsorption speed and low material strength, and achieve improved adsorption efficiency and water solubility Good, environment-friendly effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A method for preparing a sodium alginate-cyclodextrin-based material for treating metal processing wastewater, comprising the following steps:
[0029] 1) Prepare 10g of sodium alginate, 2g of β-cyclodextrin, and 1g of nano-silica, mix well, add 400ml of deionized water, stir at 30°C for 12h, and make a uniform solution A;
[0030] 2) Add 15ml PEG-400 to solution A, stir at 30°C for 24 hours, and make uniform solution B;
[0031] 3) Prepare 400ml cross-linking agent aqueous solution C, the mass concentration of cross-linking agent is 4% CaCl 2 +2% glutaraldehyde;
[0032] 4) Slowly add solution B to solution C dropwise at a rate of 20 drops / min, and stir and react for 24 hours at 50°C under nitrogen protection to obtain the crude material;
[0033] 5) The crude product obtained in step 4) was washed with ethanol for 3 times, then washed with deionized water for 3 times, and then dried at 60°C to obtain a sodium alginate-cyclodextrin-based material. The channel formati...
Embodiment 2
[0035] A method for preparing a sodium alginate-cyclodextrin-based material for treating metal processing wastewater, comprising the following steps:
[0036] 1) Prepare 10g sodium alginate, 3g cyclodextrin-modified nano-titanium dioxide (the preparation method of cyclodextrin-modified nano-titanium dioxide is: cyclodextrin 1g + nano-titanium dioxide 1g, under nitrogen protection, grind and mix in a mortar for 1h), 1g of nano-silica, after uniform mixing, add 400ml of deionized water, stir at 30°C for 12h, and make a uniform solution A;
[0037] 2) Add 40ml of 10% PVA-124 aqueous solution (mass concentration) to solution A, stir at 30°C for 24 hours, and make a uniform solution B;
[0038] 3) Prepare 400ml cross-linking agent aqueous solution C, the cross-linking agent content is 4% CaCl2+2% glutaraldehyde;
[0039] 4) Slowly add solution B dropwise to solution C at a rate of 25 drops / min, stir and react for 24 hours at 50°C under nitrogen protection to obtain the crude mater...
Embodiment 3
[0042] A method for preparing a sodium alginate-cyclodextrin-based material for treating metal processing wastewater, comprising the following steps:
[0043] 1) Prepare 10g of sodium alginate, 3g of cyclodextrin-modified nano-titanium dioxide (cyclodextrin 1g + nano-titanium dioxide 1g, under nitrogen protection, grind and mix in a mortar for 1h), 1g of nano-silicon dioxide, mix evenly, add 400ml Stir in deionized water for 12 hours at 30°C to prepare a homogeneous solution A;
[0044] 2) Add 40ml PEG-400 to solution A, stir at 30°C for 24 hours, and make uniform solution B;
[0045] 3) Prepare 400ml crosslinking agent aqueous solution C, the mass concentration of crosslinking agent is 4% calcium acetate + 2% epichlorohydrin;
[0046]4) Slowly add solution B to solution C dropwise at a rate of 20 drops / min, and stir and react for 24 hours at 50°C under nitrogen protection to obtain the crude material;
[0047] 5) The crude material obtained in step 4) was washed with ethano...
PUM
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com