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

A method of repeatedly extracting purified water with hyaluronic acid-graphene oxide-loaded polyvinyl alcohol sponge as forward osmosis extract

A polyvinyl alcohol sponge, hyaluronic acid technology, applied in chemical instruments and methods, osmotic/dialysis water/sewage treatment, semi-permeable membrane separation, etc., can solve problems such as the limitation of mechanical properties of aerogels

Active Publication Date: 2021-04-20
DALIAN UNIV OF TECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure the hydrophilicity and water-absorbing ability of the extract, the mechanical properties of the airgel are limited to a certain extent.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Use acetone and deionized water alternately to medical PVA sponge (density: 0.02g / cm 3 , average pore size: 50μm, tensile strength > 10N / cm 2 ) to rinse (3-5 times) to remove trace impurities in the sponge. Afterwards, pre-treat the PVA sponge by placing it in 30% H 2 o 2 In aqueous solution, 50 ° C, react for 2 hours, take out the sponge, and wash it repeatedly with deionized water to remove residual H 2 o 2 , and then place the PVA sponge in a vacuum oven and dry at 50°C. Afterwards, the dried pre-treated PVA sponge was cut into cylindrical blocks with the specifications of diameter: 2.25 cm, height: 1.5 cm. Prepare 20mL sodium hyaluronate (HA) (20mg) and graphene oxide (GO) (20mg) aqueous solution, and control the reaction solution with 2-(N-morpholino)ethanesulfonic acid (10mmol / L) aqueous solution (buffer solution) The pH is 6. Use the treated PVA sponge to absorb all the mixed solution, seal it and let it stand for 30min, then soak it in 40mL 1-ethyl-(3-dim...

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
densityaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for repeatedly extracting purified water using hyaluronic acid-graphene oxide loaded polyvinyl alcohol sponge as a forward osmosis extract, belonging to the technical field of environmental pollution control engineering. The hydrophilic compression-resistant sponge is used as the forward osmosis extract, and it is applied in the forward osmosis process, and the regeneration method is simplified with the water absorption and water production rate of this technology. The extract prepared by the invention can completely avoid reverse osmosis due to its structural characteristics and maintain a high water flux. In addition, based on the PVA substrate with excellent mechanical properties, it can greatly slow down the irreversible deformation of the extract and prolong its service life. The regeneration of this type of extract only needs simple mechanical compression to complete the regeneration and water production process in a short time. The base material is cheap and easy to obtain, and can be produced on a large scale, which is conducive to the large-scale preparation and wide application of the extract.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to the research of using hyaluronic acid-graphene oxide-loaded polyvinyl alcohol sponge as a forward osmosis extract to repeatedly absorb clean water, and in particular to the field of outdoor emergency and seawater desalination. Innovation for reusable extracts in osmotic devices. Background technique [0002] With economic development and population growth, problems such as water resource shortage and water pollution have become increasingly serious. Since the middle of the last century, microfiltration, ultrafiltration, nanofiltration and reverse osmosis technologies have been widely used in domestic sewage, treatment, drinking water treatment, groundwater recharge, etc., in order to change the unsustainable use of water resources. [0003] Forward osmosis is a process in which water molecules spontaneously transfer from the side of low osmotic pressure to the si...

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 Patents(China)
IPC IPC(8): B01D71/38B01D67/00C02F1/44
CPCB01D67/0079B01D71/38B01D2325/36C02F1/445
Inventor 张捍民于明川
Owner DALIAN UNIV OF 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