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

Practical intelligent carrier for long-acting control of membrane biological pollution by adopting D-amino acid and preparation method of practical intelligent carrier

A bio-fouling and amino acid technology, applied in the new field of environmental functional materials and water treatment, can solve problems such as poor stability and difficult recycling, and achieve the effects of being environmentally friendly, reducing adhesion and increasing turbulence.

Active Publication Date: 2022-07-19
NANKAI UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to promote the practical application of carrier materials based on pH responsive materials and halloysite loaded with D-amino acids, the inventors proposed a new design and preparation idea to solve the problem of halloysite with pH responsive properties prepared by layer-by-layer assembly. Stone composite carrier materials have poor stability, easy disintegration, and difficult recycling problems caused by micro-nano size in the practical process

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
  • Practical intelligent carrier for long-acting control of membrane biological pollution by adopting D-amino acid and preparation method of practical intelligent carrier
  • Practical intelligent carrier for long-acting control of membrane biological pollution by adopting D-amino acid and preparation method of practical intelligent carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of a practical intelligent carrier for long-term control of membrane biofouling by using D-amino acid, comprising the following steps:

[0039] Step 1: D-tyrosine was prepared into a solution with a concentration of 0.4 g / L, then 0.3 g of halloysite nanotube powder was added to 300 mL of D-tyrosine solution, and after ultrasonic dispersion for 30 min, the solution was heated at 25°C. The mixture was stirred at a stirring speed of 150rpm for 24h, then the mixture was centrifuged at 4500rpm for 5min, and the centrifuged product was dried to obtain a D-tyrosine-loaded halloysite nanotube composite;

[0040] Step 2, preparation of polyvinylidene fluoride / polyacrylic acid semi-interpenetrating network polymer: first, 4 g of polyvinylidene fluoride was added to a three-necked flask containing 150 g of N,N-dimethylformamide solution, and the solution was heated in a water bath at 80°C. Stir under the conditions until the polyvinylidene fluoride is complete...

Embodiment 2

[0046] The application of a practical intelligent carrier using D-amino acid for long-term control of membrane biological fouling in an aerobic membrane bioreactor for inhibiting membrane fouling includes the following steps:

[0047] A smart carrier with a length of 2cm and a diameter of 1cm was added to the aerobic membrane bioreactor, and the dosage was 10% of the volume of the aerobic membrane bioreactor. reactor) as a comparison; the membrane material in the aerobic membrane bioreactor is a hollow fiber membrane made of polyvinylidene fluoride; after the D-amino acid in the smart carrier is released, the smart carrier is recovered and cleaned, and the cleaned smart carrier D-tyrosine was loaded again in the D-tyrosine solution with a concentration of 0.4 g / L and a pH of 2, and the loading time was 24 h; then the smart carrier loaded with D-tyrosine was added to the aerobic membrane again. Control of membrane biofouling in the bioreactor; repeated 3 times.

[0048] The re...

Embodiment 3

[0050] The application of a practical intelligent carrier for long-term control of membrane biofouling by using D-amino acid in inhibiting membrane fouling in an anaerobic membrane bioreactor, comprising the following steps:

[0051] A smart carrier with a length of 2cm and a diameter of 0.5cm was added to the anaerobic membrane bioreactor, and the dosage was 15% of the volume of the anaerobic membrane bioreactor. bioreactor) as a comparison; the membrane material in the anaerobic membrane bioreactor is a flat film of polyacrylonitrile; after the release of D-tyrosine in the smart carrier, the smart carrier is recovered and cleaned, and the cleaned smart carrier is in D-tyrosine was loaded into the D-tyrosine loading solution with a concentration of 0.4 g / L and a pH of 2, and the loading time was 24 h, and then the smart carrier loaded with D-tyrosine was added to the anaerobic membrane again. Control of membrane biofouling in bioreactors; application of smart carriers.

[00...

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

Membrane biological pollution always restricts wide application of a membrane separation technology, but an existing membrane biological pollution control means has the problems of short control period and difficulty in long-term control. Therefore, the invention develops a practical intelligent carrier for long-acting control of membrane biological pollution by adopting D-amino acid and a preparation method of the practical intelligent carrier. The intelligent carrier is of a hollow tubular structure and is formed by enclosing coaxial electrospun fiber layers made of polyvinylidene fluoride / polyacrylic acid, the polyvinylidene fluoride / polyacrylic acid is of a semi-interpenetrating network polymer structure, and inner cores of the coaxial electrospun fibers are wrapped with D-amino acid loaded halloysite nanotubes. The intelligent carrier has the advantages and characteristics of high mechanical and chemical stability, easiness in recovery and convenience in use, and has the functions of slowly releasing the D-amino acid in a neutral aqueous solution and reloading the D-amino acid in an acidic D-amino acid solution. The intelligent carrier is utilized in a membrane system in a multi-cycle mode, and long-acting control over membrane biological pollution is achieved.

Description

technical field [0001] The invention belongs to the field of environmental functional materials and new technologies for water treatment, and relates to a practical intelligent carrier for long-term control of membrane biological pollution by using D-amino acid and a preparation method thereof. Background technique [0002] Membrane separation technology plays an important role in the field of sewage treatment due to its advantages of rapidity, high efficiency, easy operation and small footprint. However, in the process of membrane separation, microorganisms in the water body are easy to attach and grow on the membrane surface to form biofilms, causing membrane biofouling, resulting in a decrease in membrane flux or a sharp rise in transmembrane pressure difference. Membrane biofouling is considered to be the main obstacle to the widespread application of membrane separation technology. [0003] In response to the problem of membrane biofouling, a variety of treatment metho...

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): D04H1/728D04H1/4382D04H1/76D04H3/02D04H3/005D04H3/073D01D5/34D01D5/00D06H7/02C02F3/34
CPCD04H1/728D04H1/4382D04H1/76D04H3/02D04H3/005D04H3/073D01D5/003D01D5/0076D01D5/34D06H7/02C02F3/34D10B2505/04Y02W10/10
Inventor 郭晓燕王馨悦林训弦潘峰张绍晗张沛范守港
Owner NANKAI UNIV
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