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Magnetic gelatin-based anionic polyacrylamide heavy metal ion removal agent and preparation method thereof

A polyacrylamide, heavy metal ion technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc. Heavy metal ion wastewater treatment requirements and other issues, to achieve the effect of small impact on water quality, easy operation and good separation effect

Inactive Publication Date: 2017-06-20
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Humic acid has a wide range of sources, but there are disadvantages such as unstable performance and large fluctuations in effluent quality
[0017] At present, the method of removing heavy metal ions in wastewater cannot well meet the treatment requirements of wastewater containing heavy metal ions, and the development of new heavy metal ion removers has important practical significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation method of the magnetic gelatin-based anionic polyacrylamide heavy metal ion remover of the present embodiment comprises:

[0049] (1) Preparation of gelatin-based anionic polyacrylamide: Add appropriate amount of deionized water into the reactor, add 0.4g gelatin, 2g acrylamide, stir evenly, then add 0.6g maleic anhydride, stir evenly, heat up to 50 -100°C. Weigh 0.1-2.0% potassium persulfate in the total amount of reaction monomers, dissolve it with an appropriate amount of water, slowly add potassium persulfate aqueous solution to the above reaction system dropwise within 10-30 minutes, and then react for 30-120 minutes. After the temperature drops to room temperature, adjust the pH value to 6-9 with an appropriate amount of sodium hydroxide aqueous solution;

[0050] (2) Preparation of magnetic gelatin-based anionic polyacrylamide: heat the above-mentioned gelatin-based anionic polyacrylamide aqueous solution to 50-100°C, add Fe with 10% mass of acry...

Embodiment 2

[0052] The preparation method of the magnetic gelatin-based anionic polyacrylamide heavy metal ion remover of the present embodiment comprises:

[0053] (1) Preparation of gelatin-based anionic polyacrylamide: Add appropriate amount of deionized water into the reactor, add 1g of gelatin and 2g of acrylamide, stir evenly, then add 2g of sodium vinyl sulfonate, stir evenly, weigh the reaction monomer The total amount of 0.1-2.0% sodium thiosulfate is dissolved with an appropriate amount of water and added to the reaction system, and the temperature is raised to 50-100°C. Weigh hydrogen peroxide with the same molar amount of sodium thiosulfate, slowly add hydrogen peroxide dropwise into the above reaction system within 10-30 minutes, and react for another 30-120 minutes. After the temperature drops to room temperature, adjust the pH value to 6-9 with an appropriate amount of sodium hydroxide aqueous solution;

[0054] (2) Preparation of magnetic gelatin-based anionic polyacrylam...

Embodiment 3

[0056] The preparation method of the magnetic gelatin-based anionic polyacrylamide heavy metal ion remover of the present embodiment comprises:

[0057] (1) Preparation of gelatin-based anionic polyacrylamide: Add appropriate amount of deionized water into the reactor, add 0.6g gelatin, 2g acrylamide, stir well, then add 1.2g 2-acrylamide-2-methylpropylphosphine Acid, stir evenly, weigh 0.1-2.0% sodium thiosulfate of the total amount of reaction monomers, dissolve it with an appropriate amount of water, add it to the reaction system, and raise the temperature to 50-100°C. Weigh ammonium persulfate with the same molar weight as sodium thiosulfate, and dissolve it with an appropriate amount of water. Slowly add the ammonium persulfate aqueous solution dropwise into the above reaction system within 10-30 minutes, and then react for 30-120 minutes. After the temperature drops to room temperature, adjust the pH value to 6-9 with an appropriate amount of sodium hydroxide aqueous so...

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Abstract

The invention relates to the technical field of treatment of wastewater containing heavy metal ions and particularly discloses a magnetic gelatin-based anionic polyacrylamide heavy metal ion removal agent and a preparation method thereof. The magnetic gelatin-based anionic polyacrylamide heavy metal ion removal agent is prepared from gelatin and acrylamide. The magnetic gelatin-based anionic polyacrylamide heavy metal ion removal agent is characterized by being prepared by the steps of carrying out copolymerization on gelatin, acrylamide and anionic monomers so as to prepare a gelatin-based anionic polyacrylamide high polymer compound, and combining the gelatin-based anionic polyacrylamide high polymer compound with Fe3O4, so as to obtain the magnetic gelatin-based anionic polyacrylamide heavy metal ion removal agent. According to the preparation method, the heavy metal ion removal agent is prepared from a magnetic material, and a separation effect of the heavy metal ions in water is enhanced by virtue of the action of a magnetic field; and a preparation process is simple, reaction conditions are mild, the operation is simple and convenient, and a treatment process of heavy metal ion sewage is simplified.

Description

[0001] (1) Technical field [0002] The invention relates to the technical field of wastewater treatment containing heavy metal ions, in particular to a magnetic gelatin-based anionic polyacrylamide heavy metal ion remover and a preparation method thereof. [0003] (2) Background technology [0004] Heavy metals usually refer to elements with a relative atomic mass between 63.5 and 200.6 and a specific gravity greater than 5. With the development of industries such as metal plating, chemical fertilizers, tanning, batteries, papermaking and pesticides, the amount of wastewater containing heavy metal ions discharged directly or indirectly into the environment is gradually increasing, and heavy metal pollution has become an environmental problem that cannot be ignored. Unlike organic pollutants, heavy metal ions are often not biodegradable, but accumulate and transform in living organisms. Heavy metal pollution affects the growth and development of plants and seriously damages th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/62C08F289/00C08F220/56C08F222/06C08F228/02C08F220/58C08F220/28C08F220/06C08F230/02C08F212/14
CPCC02F1/62C08F289/00C08F220/585C08F212/14C08F220/281
Inventor 王晨顾宁朱传勇申婷婷孙静
Owner QILU UNIV OF TECH
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