Preparation method of graphene oxide compound modified attapulgite water-purifying agent

A technology for modifying attapulgite and soil water purifiers, which is applied in chemical instruments and methods, water treatment parameter control, biological water/sewage treatment, etc., and can solve the problems of immature biological methods and fast chemical methods with good effects and other problems, to achieve the effect of increasing the adsorption and decolorization ability, the preparation method is simple and scientific, and the adsorption ability is strong

Inactive Publication Date: 2017-11-21
SUZHOU TASHANSHI ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the rapid development of industry, it is inevitable that a large amount of industrial wastewater will be produced. Industrial wastewater contains a large amount of heavy metals, which directly endangers the growth environment of aquatic organisms, causes river pollution, reduces the water quality of rivers, affects the water environment of residents, and also causes soil pollution. Soil microbial environment, which in turn affects the entire ecosystem
At present, industrial wastewater treatment can be roughly divided into three categories: physical, chemical and biological; physical methods have a long cycle and high cost; chemical methods are fast and effective; biological methods are not yet mature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of graphene oxide composite modified attapulgite water purifier,

[0020] Include the following steps:

[0021] (1) Preparation of graphene oxide composite: Add oligomeric 3-aminopropyltriethoxysilane to graphene oxide aqueous dispersion to obtain flocculation precipitation; under the catalysis of carbodiimide, the above flocculation precipitation and Polyacrylamide is reacted to obtain acrylamide oligomer graphene oxide; thiourea is added to the aqueous solution of acrylamide oligomer graphene oxide prepared above, and a graphene oxide composite is prepared by a water bath method, which is washed with water and freeze-dried to obtain ;

[0022] (2) Preparation of modified attapulgite: crush the natural attapulgite to 200 mesh, add 6 times the weight of deionized water to make a suspension slurry, and then fully disperse it by ultrasound, take the upper suspension and centrifuge it, then vacuum Suction filtration and drying to obtain attapulgite; ...

Embodiment 2

[0033] A preparation method of graphene oxide composite modified attapulgite water purifier,

[0034] Include the following steps:

[0035] (1) Preparation of graphene oxide composite: Add oligomeric 3-aminopropyltriethoxysilane to graphene oxide aqueous dispersion to obtain flocculation precipitation; under the catalysis of carbodiimide, the above flocculation precipitation and Polyacrylamide is reacted to obtain acrylamide oligomer graphene oxide; thiourea is added to the aqueous solution of acrylamide oligomer graphene oxide prepared above, and a graphene oxide composite is prepared by a water bath method, which is washed with water and freeze-dried to obtain ;

[0036] (2) Preparation of modified attapulgite: crush the natural attapulgite to 200 mesh, add 6 times the weight of deionized water to make a suspension slurry, and then fully disperse it by ultrasound, take the upper suspension and centrifuge it, then vacuum Suction filtration and drying to obtain attapulgite; ...

Embodiment 3

[0047] A preparation method of graphene oxide composite modified attapulgite water purifier,

[0048] Include the following steps:

[0049](1) Preparation of graphene oxide composite: Add oligomeric 3-aminopropyltriethoxysilane to graphene oxide aqueous dispersion to obtain flocculation precipitation; under the catalysis of carbodiimide, the above flocculation precipitation and Polyacrylamide is reacted to obtain acrylamide oligomer graphene oxide; thiourea is added to the aqueous solution of acrylamide oligomer graphene oxide prepared above, and a graphene oxide composite is prepared by a water bath method, which is washed with water and freeze-dried to obtain ;

[0050] (2) Preparation of modified attapulgite: crush the natural attapulgite to 150 mesh, add 5 times the weight of deionized water to make a suspension slurry, and then fully disperse it by ultrasound, take the upper suspension and centrifuge it, then vacuum Suction filtration and drying to obtain attapulgite; p...

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Abstract

The invention belongs to the technical field of water-purifying agents, and particularly relates to a preparation method of a graphene oxide compound modified attapulgite water-purifying agent. The preparation method of the graphene oxide compound modified attapulgite water-purifying agent is simple and scientific, is environmentally friendly, cannot pollute the environment and is low in cost; and the water-purifying agent is prepared by compounding of graphene oxide and modified attapulgite, the graphene oxide has a unique layered structure and large specific surface area, the adsorption and decoloration capability of the modified attapulgite is greatly improved, the sewage treatment ability is high, the adsorption ability to heavy metals in sewage is high, coagulation and decoloration, odor removal and COD removal effects are obvious, the modified attapulgite is a natural nano-material, and therefore, the graphene oxide compound modified attapulgite water-purifying agent is environmentally friendly, cannot cause secondary pollution to the environment, and is an environment-friendly product.

Description

technical field [0001] The invention belongs to the technical field of water purifiers, and in particular relates to a preparation method of a graphene oxide compound modified attapulgite water purifier. Background technique [0002] In the rapid development of industry, it is inevitable that a large amount of industrial wastewater will be produced. Industrial wastewater contains a large amount of heavy metals, which directly endangers the growth environment of aquatic organisms, causes river pollution, reduces the water quality of rivers, affects the water environment of residents, and also causes soil pollution. Soil microbial environment, which in turn affects the entire ecosystem. At present, industrial wastewater treatment can be roughly divided into three categories: physical, chemical and biological; physical methods have a long cycle and high cost; chemical methods are fast and effective; biological methods are immature. Contents of the invention [0003] Purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/20C02F1/281C02F1/283C02F3/34C02F2101/20C02F2209/08C02F2303/02
Inventor 袁兴平杨爽
Owner SUZHOU TASHANSHI ENVIRONMENTAL PROTECTION TECH CO LTD
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