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Magnetic organic polymeric flocculant and preparation method thereof

An organic polymer and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of polyacrylamide usage restrictions, high synthesis cost, biological damage, etc., and achieve simple and easy preparation methods and good treatment effects , The effect of no pollution to the environment

Inactive Publication Date: 2017-01-04
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coagulation effect of polyacrylamide is particularly obvious, but the price is expensive, the synthesis cost is high, and it contains certain toxicity, which may cause harm to the human body and other organisms
Therefore, the use of polyacrylamide is limited

Method used

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  • Magnetic organic polymeric flocculant and preparation method thereof
  • Magnetic organic polymeric flocculant and preparation method thereof
  • Magnetic organic polymeric flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of magnetic organic polymer flocculant comprises the following steps:

[0029] Step 1, preparing oleic acid-modified nano-Fe by low-temperature water washing 3 o 4 : Weigh 2g of nano-Fe 3 o 4 Place in 50mL of distilled water and use an ultrasonic cleaner to ultrasonically disperse for 10 minutes to obtain solution ①. Take 50mL of oleic acid heated to liquid and directly add to solution ① to obtain mixed solution ②. Rotate and oscillate for 12 hours, then continuously extract with acetone for 6 hours until the supernatant is colorless and transparent, dry the extracted and washed samples in a vacuum drying oven at 80°C for 4 hours, and grind them with a multi-functional pulverizer to obtain oil Nano-Fe after acid modification 3 o 4 .

[0030] Step 2, weigh 6g AM, 1g AMPS and 3mL DMDAAC into a 250mL beaker, inject 27mL of distilled water into it to dissolve them completely, so that the amount of AM accounts for 20% of the total aqueous solutio...

Embodiment 2

[0034] The preparation method of magnetic organic polymer flocculant comprises the following steps:

[0035] Step 1, preparing oleic acid-modified nano-Fe by low-temperature water washing 3 o 4 : Weigh 2g of nano-Fe 3 o 4 Place in 50mL of distilled water and use an ultrasonic cleaner to ultrasonically disperse for 10 minutes to obtain solution ①. Take 50mL of oleic acid heated to liquid and directly add to solution ① to obtain mixed solution ②. Rotate and oscillate for 12 hours, then continuously extract with acetone for 6 hours until the supernatant is colorless and transparent, dry the extracted and washed samples in a vacuum drying oven at 80°C for 4 hours, and grind them with a multi-functional pulverizer to obtain oil Nano-Fe after acid modification 3 o 4 .

[0036] Step 2: Weigh 8g AM, 1g AMPS and 1mL DMDAAC into a 250mL beaker, inject 39mL of distilled water into it to dissolve them completely, so that the amount of AM accounts for 20% of the total aqueous solutio...

Embodiment 3

[0040] The preparation method of magnetic organic polymer flocculant comprises the following steps:

[0041] Step 1, preparing oleic acid-modified nano-Fe by low-temperature water washing 3 o 4 : Weigh 2g of nano-Fe 3 o 4 Place in 50mL of distilled water and use an ultrasonic cleaner to ultrasonically disperse for 10 minutes to obtain solution ①. Take 50mL of oleic acid heated to liquid and directly add to solution ① to obtain mixed solution ②. Rotate and oscillate for 12 hours, then continuously extract with acetone for 6 hours until the supernatant is colorless and transparent, dry the extracted and washed samples in a vacuum drying oven at 80°C for 4 hours, and grind them with a multi-functional pulverizer to obtain oil Nano-Fe after acid modification 3 o 4 .

[0042] Step 2, weigh 8g AM, 1g AMPS and 1mL DMDAAC into a 250mL beaker, inject 39ml of distilled water into it to dissolve them completely, so that the amount of AM accounts for 20% of the total aqueous solutio...

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Abstract

The invention provides a magnetic organic polymeric flocculant and a preparation method thereof. The flocculant is prepared by compounding acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride and oleic acid-modified nanometer Fe3O4. The preparation method of the magnetic organic polymeric flocculant comprises the steps that oleic acid-modified nanometer Fe3O4 is prepared through low-temperature washing; oleic acid-modified nanometer Fe3O4, acrylamide (AM), 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and dimethyl diallyl ammonium chloride (DMDAAC) are mixed to react under the initiator condition, and the magnetic organic polymeric flocculant is obtained. The flocculant has the advantages of being low in dosage, wide in applicable pH range and temperature range, high in thermal stability and the like and cannot pollute the environment.

Description

technical field [0001] The invention belongs to the technical field of polymer flocculants, and in particular relates to a magnetic organic polymer flocculant and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of industry and construction, the discharge of oily wastewater, coal slime water and cement factory wastewater has increased significantly. The generation and discharge of these wastewater will pollute limited drinking water resources. endanger the safety of human drinking water. Generally, flocculants are divided into two categories: inorganic flocculants and organic flocculants. Among them, inorganic flocculants are mainly two series of iron preparations and aluminum preparations. There are two kinds of aluminum-free preparations: aluminum sulfate and alum; iron preparations mainly include ferric sulfate, ferric chloride, etc. Among these flocculants, aluminum sulfate has the most obvious coagulation effect. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C08F220/56C08F220/58C08F226/02C08F2/44C08K9/04C08K3/22
CPCC02F1/56C08F2/44C08F220/56C08K3/22C08K9/04C08K2003/2275C08K2201/011C08F220/585C08F226/02
Inventor 袁旭音周睿
Owner HOHAI UNIV