Hydrophobic modified organic/inorganic composite flocculant and preparation method and application thereof

A composite flocculant and hydrophobic modification technology, which is applied in the field of environmental pollution control, can solve the problems of limited application range, inability to remove hydrophilic and hydrophobic small molecular pollutants and macromolecular pollutants at the same time, and achieve the effect of wide application range

Active Publication Date: 2020-08-25
NANJING NORMAL UNIVERSITY
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In view of the problems in the prior art that traditional flocculants cannot simultaneously remove hydrophilic and hydrophobic small molecular pollutants and macromolecular pollutants, and the scope of application is limited, the present invention provides a hydrophobically modified organic / inorganic composite flocculant

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
  • Hydrophobic modified organic/inorganic composite flocculant and preparation method and application thereof
  • Hydrophobic modified organic/inorganic composite flocculant and preparation method and application thereof
  • Hydrophobic modified organic/inorganic composite flocculant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. Under the condition of 0℃, add the toluene solution of acryloyl chloride (the concentration of acryloyl chloride is 42.5g / L) to the mixed solution composed of n-propylamine, triethylamine and toluene (acryloyl chloride, n-propylamine, triethylamine, The ratio of the amount of toluene is 1:1:5:20) and magnetically stirred, the dropping rate is 5mL / min, and the stirring speed is 200r / min. After the dropwise addition, react at 4°C for 5 hours. After the reaction, the precipitate is separated by filtration under normal pressure, and the filtrate is collected to obtain an acryloyl n-propylamine solution;

[0055] 2. Dissolve thioglycolic acid in toluene (the ratio of the amount of thioglycolic acid to acryloyl chloride (step 1) is 1:5 to obtain the thioglycolic acid solution (the concentration of thioglycolic acid is 45g / L), and place it on the round bottom In the flask, magnetic stirring is used to dissolve completely (stirring speed is 200r / min). The temperature is raised ...

Embodiment 2

[0063] 1. Under 5℃, add the toluene solution of acryloyl chloride (the concentration of acryloyl chloride is 85g / L) to the mixed solution of n-propylamine, triethylamine and toluene (acryloyl chloride, n-propylamine, triethylamine, toluene). The ratio of the amount of the substance is 1:5:1:10) and magnetically stirred, the dropping rate is 8mL / min, and the stirring speed is 250r / min. After the dripping is completed, the reaction is carried out at 60°C for 40 hours. After the reaction is completed, the precipitate is separated by filtration under normal pressure, and the filtrate is collected to obtain the acryloyl n-propylamine solution;

[0064] 2. Dissolve thioglycolic acid in toluene (the ratio of thioglycolic acid to acryloyl chloride is 1:50 to obtain a thioglycolic acid solution (the concentration of thioglycolic acid is 20g / L), and place it in a round bottom flask. Stir and dissolve completely (the stirring speed is 250r / min). The temperature is increased to 90°C, and nit...

Embodiment 3

[0071] 1. Under 3℃, add the toluene solution of acryloyl chloride (the concentration of acryloyl chloride is 59.5g / L) to the mixed solution composed of isopropylamine, triethylamine and toluene (acryloyl chloride, isopropylamine, triethylamine, The ratio of the amount of toluene is 1:2.5:3:14) and magnetically stirred, the dropping rate is 10 mL / min, and the stirring speed is 300 r / min. After the dropwise addition, the reaction was carried out at 30°C for 15 hours. After the reaction, the precipitate was separated by filtration under normal pressure, and the filtrate was collected to obtain the acrylamide solution;

[0072] 2. Dissolve thioglycolic acid in toluene (the ratio of the amount of thioglycolic acid to acryloyl chloride is 1:25 to obtain the thioglycolic acid solution (the concentration of thioglycolic acid is 32g / L), and place it in a round-bottomed flask. Stir and dissolve completely (the stirring speed is 300r / min). The temperature is increased to 40°C, and nitrogen ...

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
clearance rateaaaaaaaaaa
Login to view more

Abstract

The invention discloses a hydrophobic modified organic/inorganic composite flocculant and a preparation method and application thereof. The structural formula of the hydrophobic modified organic/inorganic composite flocculant is as follows: R1 is Al or Fe or Ti, R2 is-NH (CH2) 2CH3 or-NHCH (CH3) 2, n ranges from 4.012 to 19.47, and the value range of x: y is (3.1 to 12.4): 1. The flocculant has both inorganic groups and organic groups, improves the defect of insufficient charge density of a single flocculating agent, and improves the electric neutralization characteristic so that the flocculation speed of the composite flocculating agent is increased, the effective flocculation range is widened, and the floc settling performance is good; the nanocrystallization flocculant has the advantages of multiple surface atoms, large particle specific surface area, high specific surface energy and the like, and the flocculation performance of the flocculant on pollutants is further improved; in addition, the flocculating agent subjected to moderate hydrophobic modification has excellent flocculation performance on micromolecular organic pollutants containing hydrophobic functional groups in awater body, and is wide in application range.

Description

Technical field [0001] The invention belongs to the treatment of environmental pollution, and specifically relates to a hydrophobically modified organic / inorganic composite flocculant and a preparation method and application thereof. Background technique [0002] The quality of the water environment has an important relationship with human health. With the rapid development of industry and agriculture and the continuous improvement of people's living standards, the phenomenon of inorganic and organic small molecule pollutants remaining in the water is becoming more and more serious. Nitrate and phosphate are typical inorganic small molecule pollutants, and organic small molecule drugs are representative organic small molecule micropollutants. Organic small molecule drugs, nitrates, and phosphates are ubiquitous in drinking water sources, drinking water treatment plants (DWTP) and even drinking water. The concentration of these inorganic and organic small molecule pollutants in ...

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): C02F1/52C02F1/56
CPCC02F1/56C02F1/5236Y02W10/37
Inventor 杨朕赵丽娜杨维本胡敏王亚东喻宁波
Owner NANJING NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap