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Bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chloride adsorbent

A technology for glyoxalating polyacrylamide and polyacrylamide, which is applied in adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc. Contaminants and other problems, to achieve the effect of increasing volume and quality

Pending Publication Date: 2019-12-13
罗金标
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chloride adsorbent, which solves the problem that the existing polyacrylamide flocculants cannot remove a large amount of drinking water Phosphorus and chlorine are toxic pollutants in water, and at the same time, it solves the problem that the existing graphene adsorption materials do not have the effect of inhibiting and removing bacteria

Method used

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  • Bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chloride adsorbent

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preparation example Construction

[0022] In order to achieve the above object, the present invention provides the following technical solutions: a bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chloride adsorbent, comprising the following raw materials in parts by weight, 75-87 parts Aminated graphene, 10-15 parts of polyacrylamide, 0.5-3 parts of lanthanum carbonate hydrate, 2-5 parts of glyoxal, 0.5-2 parts of titanate coupling agent, aminated graphene, the size is 2- 6μm, thickness: 1-3nm, ammoniation rate: about 3.7-4.2%, structural formula is Polyacrylamide is a non-ionic polyacrylamide with a molecular weight of 2.6 million-3.3 million, a degree of polymerization of 36600-46400, an aqueous solution viscosity (0.1% SOL): 330-470 (CPS), and a structural formula of The molecular formula of lanthanum carbonate hydrate is La 2 (CO 3 ) 3 ·8H 2 O, where La 2 o 3 The mass fraction is 71.5-74.6%, positive trivalent La 3+ With a high affinity for phosphate ions,...

Embodiment 1

[0029] (1) Preparation of glyoxalated polyacrylamide: add 100mL of distilled water and 200mL of ethanol to a 500mL three-necked bottle, weigh 8 parts of polyacrylamide and 2 parts of glyoxal in turn, add them to the three-necked bottle, and then configure 0.4mol / L of dilute sulfuric acid, slowly add dropwise into the three-necked flask until the pH is 3-4, place the three-necked flask in an oil bath and heat to 110-115°C, stir at a constant speed for 12-15h to make the glyoxal and Polyacrylamide fully reacted, after the reaction is complete, add sodium carbonate to the three-neck flask to quench the reaction until the pH is 7-8, filter the material to obtain white floc, wash with 2500-3500mL distilled water to completely remove sulfuric acid , sodium sulfate, sodium carbonate and impurities to obtain pure glyoxalated polyacrylamide component 1, the reaction equation is:

[0030]

[0031] (2) Preparation of glyoxalated polyacrylamide-lanthanum carbonate hybrid polymer: Weig...

Embodiment 2

[0034] (1) Preparation of glyoxalated polyacrylamide: Add 100mL distilled water and 200mL ethanol to a 500mL three-necked bottle, weigh 10 parts of polyacrylamide and 3 parts of glyoxal into the three-necked bottle, and then configure 0.4mol / L of dilute sulfuric acid, slowly add dropwise into the three-necked flask until the pH is 3-4, place the three-necked flask in an oil bath and heat to 110-115°C, stir at a constant speed for 12-15h to make the glyoxal and Polyacrylamide fully reacted, after the reaction is complete, add sodium carbonate to the three-neck flask to quench the reaction until the pH is 7-8, filter the material to obtain white floc, wash with 2500-3500mL distilled water to completely remove sulfuric acid , sodium sulfate, sodium carbonate and impurities to obtain pure glyoxalated polyacrylamide component 2, the reaction equation is:

[0035]

[0036] (2) Preparation of glyoxalated polyacrylamide-lanthanum carbonate hybrid polymer: Weigh 1 part of lanthanum...

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Abstract

The invention relates to the technical field of phosphorus and chlorine adsorbents, and discloses a bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chlorideadsorbent. The bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chloride adsorbent comprises the following raw materials: aminated graphene, polyacrylamide, lanthanum carbonate hydrate, glyoxal and a titanate coupling agent, wherein the polyacrylamide is nonionic polyacrylamide. The glyoxalated polyacrylamide in the bacteriostatic bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus chloride adsorbent has strong hydrophilicity. At the same time, a large number of active imide hydroxyl groups on the main chain can form nonmetallic bonds with many substances such as phosphate and chlorine organic pollutants through affinity and adsorption, and form "bridging" between adsorbed particles to form flocs, and the flocs are adsorbed by the graphene, so that the effects of removing phosphorus and organic chlorine pollutants can be achieved. At the same time, a low phosphorus and phosphorus-free environment inhibitsthe growth of bacteria and achieves the effect of purifying water sources.

Description

technical field [0001] The invention relates to the technical field of phosphorus and chlorine adsorbents, in particular to a bacteriostatic glyoxalated polyacrylamide-lanthanum carbonate modified graphene phosphorus and chlorine adsorbent. Background technique [0002] Pollution of drinking water is mainly due to the random discharge of domestic sewage, industrial wastewater, domestic waste or industrial solid waste, neglect of water source sanitation protection, incomplete water purification and disinfection, poor sanitation management in water transmission, distribution and storage, etc. The reason is that pollutants enter the water, which changes the physical and chemical characteristics of water quality and the characteristics and composition of biological populations, resulting in deterioration of water quality and endangering human health. Phosphorus is an important factor for the growth of microorganisms in drinking water. When the concentration of phosphate in drinki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/10C02F101/12C02F101/36
CPCB01J20/20B01J20/265C02F1/281C02F1/285C02F1/288C02F2101/105C02F2101/12C02F2101/36C02F2303/20
Inventor 罗金标
Owner 罗金标
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