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

Double-loaded core-shell hydrogel, preparation method and application thereof

A hydrogel, double-loaded technology, which is applied in chemical instruments and methods, water pollutants, biological water/sewage treatment, etc., can solve the problems of complex treatment process, non-degradable ammonia nitrogen, non-biodegradable, etc., to achieve simple operation, The effect of a wide range of sources

Active Publication Date: 2019-05-10
SHAANXI UNIV OF SCI & TECH
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many related studies on how to deal with ammonia nitrogen wastewater, but the traditional materials for treating ammonia nitrogen wastewater still have the following defects: first, only nitrification or denitrification is performed, and the treatment process is relatively complicated and the cost is high; Or chemical treatment of ammonia nitrogen wastewater, can not degrade ammonia nitrogen, can not fundamentally achieve the purpose of purifying water; third, the use of chemical agents in the production of materials is easy to cause environmental pollution, and after use is not biodegradable, can not be recycled Form environmental burden and cause secondary pollution

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
  • Double-loaded core-shell hydrogel, preparation method and application thereof
  • Double-loaded core-shell hydrogel, preparation method and application thereof
  • Double-loaded core-shell hydrogel, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of a double-loaded core-shell hydrogel of the present invention uses natural polymers and synthetic polymers with adsorption functional groups as raw materials, and prepares double-loaded core-shell hydrogels through a step-by-step method, and natural polymers with adsorption functional groups Using hemicellulose, cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, starch, hydroxyethyl cellulose, water-soluble chitin, sodium alginate, hyaluronic acid, lignosulfonate, agar, agar A mixture of one or more of sugar and collagen; polyacrylic acid is used for synthetic polymers;

[0031] Specific steps are as follows:

[0032] Step 1, preparation of the core matrix, mixing 5 to 10 parts by mass of natural polymers with adsorption functional groups and 1 to 5 parts of polyacrylic acid aqueous solution, stirring until the natural polymers with adsorption functional groups are completely dissolved; then adding mass The number of parts is 0.1-10 p...

Embodiment 1

[0041] A method for preparing a double-loaded core-shell hydrogel, comprising the following steps:

[0042] Step 1, add 0.1 parts of polyacrylic acid to 100 parts of deionized water in parts by mass, stir at 90°C for 2 hours to obtain matrix A, cool to room temperature for later use; add 5 parts by mass of hemicellulose to Add 100 parts of deionized water, stir at 50°C for 1 hour, until the hemicellulose is completely dissolved in deionized water to obtain matrix B, cool to room temperature for later use;

[0043] Step 2, mix 1 part of matrix A and 5 parts of matrix B in parts by mass, stir until completely mixed at a temperature of 65°C, and stir for 3 hours at a stirring speed of 100r / min;

[0044] Then add 0.1 part of denitrifying bacteria, 0.01 part of nutrient solution and 0.05 part of buffer solution of citric acid-disodium hydrogen phosphate, stir and mix completely, the stirring speed is 100r / min, and the stirring time is 60min to obtain matrix C; wherein, The denitri...

Embodiment 2

[0051] A method for preparing a double-loaded core-shell hydrogel, comprising the following steps:

[0052] Step 1, add 0.5 parts of polyacrylic acid to 100 parts of deionized water according to the mass parts, and stir at 120°C for 1.5 hours to obtain matrix A, which is cooled to room temperature for later use; the mass parts are 1 part of cellulose, 2 Add 100 parts of hemicellulose to 100 parts of deionized water, stir at 70°C for 0.5 hours until the cellulose and hemicellulose are completely dissolved in deionized water to obtain matrix B, cool to room temperature for later use;

[0053] Step 2, mix 5 parts by mass of matrix A and 10 parts of matrix B, stir until completely mixed at a temperature of 70°C, and stir for 2.5 hours at a stirring speed of 150r / min;

[0054] Then add 1 part of denitrifying bacteria, 1 part of nutrient solution and 0.02 part of tartaric acid-malic acid-sodium citrate buffer, stir and mix completely, the stirring speed is 150r / min, and the stirring...

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

No PUM Login to View More

Abstract

The invention discloses a double-loaded core-shell hydrogel, a preparation method and an application thereof. The method includes, firstly, mixing natural polymer with adsorption functional groups anda polyacrylic acid aqueous solution, adding denitrifying bacteria, a nutrient solution and a pH regulator to obtain a core matrix after complete mixing; then adding Ca2+-containing salt and gluconicacid lactone into the nuclear matrix to obtain a mixed solution; secondly, pouring the mixed solution into a mold, dripping a hydrophilic natural polymer solution, and foaming to obtain a porous foaming shell matrix; thirdly, preforming physical crosslinking gelation forming on the porous foamed core-shell matrix to obtain a porous core-shell wet gel; placing the porous core-shell wet gel in deionized water, dialyzing and freeze drying to obtain a single-load core-shell hydrogel; and finally, soaking the single-loaded core-shell hydrogel in nitrobacteria solution and freeze-drying to obtain the double-loaded core-shell hydrogel; The preparation method has simple process operation, no pollution and wide source of raw materials, and the prepared double-loaded core-shell hydrogel has the effect of removing ammonia nitrogen.

Description

technical field [0001] The invention belongs to the technical field of core-shell hydrogel, and in particular relates to a double-loaded core-shell hydrogel and its preparation method and application. Background technique [0002] While the industry is developing rapidly, it has also caused a series of serious environmental pollution problems, among which the problem of ammonia nitrogen wastewater pollution is particularly serious. Ammonia nitrogen wastewater has a wide range of sources, high discharge volume, complex composition, and great harm. A large amount of nitrogen discharge will have adverse effects on humans and nature. Therefore, it is one of the effective ways to prepare highly efficient, environmentally friendly and pollution-free ammonia nitrogen materials to solve this environmental pollution problem. [0003] At present, there are many related studies on how to deal with ammonia nitrogen wastewater, but the traditional materials for treating ammonia nitrogen...

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
IPC IPC(8): C02F3/10C02F3/30C02F101/16
CPCY02W10/10
Inventor 张敏万豫李成涛王蕾
Owner SHAANXI UNIV OF SCI & 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