Check patentability & draft patents in minutes with Patsnap Eureka AI!

Composite polymeric flocculant and preparation method thereof

A composite polymer and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of limited flocculation ability, achieve high Zeta potential positive charge, overcome poor flocculation effect, and good water solubility

Inactive Publication Date: 2016-01-06
FUZHOU UNIV
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its own flocculation ability is still limited, especially under alkaline conditions, and it needs to be modified.

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
  • Composite polymeric flocculant and preparation method thereof
  • Composite polymeric flocculant and preparation method thereof
  • Composite polymeric flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the preparation of cationic dextran cross-linked chitosan flocculant with higher degree of etherification:

[0031] (1) Dissolve 3.24g of dextran evenly in 10mL of distilled water containing 1.5g of sodium hydroxide, and add 0.02mol of cationic etherifying agent dropwise into the dextran solution at 60°C (dropping for about 20min ) Then the reaction was carried out for 12h. The cationic dextran solution obtained after the reaction was added dropwise into 90% ethanol solution, and the vacuum distillation device was used for suction filtration to obtain the precipitated white cationic dextran solid. Then use ethanol solution to wash 2-3 times.

[0032] (2) Add the cationic dextran solution obtained after the reaction dropwise into 90% ethanol solution, and perform suction filtration with a vacuum distillation device to obtain the precipitated white cationic dextran solid. Then use ethanol solution to wash 2-3 times.

[0033] (3) Weigh 0.7 g of the cationi...

Embodiment 2

[0037] Embodiment 2: Preparation of cationic dextran cross-linked chitosan flocculant with moderate degree of etherification:

[0038] The specific steps are as follows:

[0039] (1) Dissolve 3.24g of dextran evenly in 10mL of distilled water containing 1.5g of sodium hydroxide, and add 0.015mol of cationic etherifying agent dropwise into the dextran solution at 60°C (dropping for about 20min ) Then the reaction was carried out for 8h. The cationic dextran solution obtained after the reaction was added dropwise into 90% ethanol solution, and the vacuum distillation device was used for suction filtration to obtain the precipitated white cationic dextran solid. Then use ethanol solution to wash 2-3 times.

[0040] (2) Add the cationic dextran solution obtained after the reaction dropwise into 90% ethanol solution, and perform suction filtration with a vacuum distillation device to obtain the precipitated white cationic dextran solid. Then use ethanol solution to wash 2-3 time...

Embodiment 3

[0044] Example 3: Preparation of cationic dextran cross-linked chitosan flocculant with lower degree of etherification

[0045] The specific steps are implemented as follows:

[0046] (1) Dissolve 3.24g of dextran evenly in 10mL of distilled water containing 1.5g of sodium hydroxide, and add 0.005mol of cationic etherifying agent dropwise to the dextran solution at 60°C (dropping for about 20min ) Then the reaction was carried out for 8h. The cationic dextran solution obtained after the reaction was added dropwise into 90% ethanol solution, and the vacuum distillation device was used for suction filtration to obtain the precipitated white cationic dextran solid. Then use ethanol solution to wash 2-3 times.

[0047] (2) Add the cationic dextran solution obtained after the reaction dropwise into 90% ethanol solution, and perform suction filtration with a vacuum distillation device to obtain the precipitated white cationic dextran solid. Then use ethanol solution to wash 2-3 t...

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 composite polymeric flocculant and a preparation method thereof, and belongs to the technical field of composite materials. The method comprises the steps that firstly, cationization is performed on glucan by taking 3-chloro-2-hydroxypropyltrimethylammonium chloride as an etherifying agent; secondly, a cross-linking blending reaction is performed on the cationic glucan and chitosan by adopting a cross-linking blending method, and then the chitosan-cationic glucan composite polymeric flocculant is prepared. The flocculant has the efficient flocculating effects on kaolin simulation wastewater and actual wastewater, the wide pH applicability and the good application prospect in the field of wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a composite polymer flocculant and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, the massive discharge of industrial waste water, mine waste water, domestic waste water and the blind use of pesticides and fertilizers in agriculture have caused serious pollution of water bodies and seriously affected people's health and normal life. Therefore, the problem of sewage treatment has become an urgent problem to be solved. Among them, as the first step of water treatment, the flocculation of sewage is particularly important. Flocculation has the functions of removing organic matter in water, reducing turbidity and color of sewage, and reducing heavy metals and radioactive substances in water. Although there are many flocculants currently on the market, and there is no shortage of flocculants with good ...

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): C02F1/56C08J3/24C08L5/08C08L5/02C08B37/02
Inventor 张其清游力军宋立岛王傲
Owner FUZHOU UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com