Graphene-oxide aliphatic amine removing agent and application method thereof

An application method and technology of aliphatic amines, applied in graphene oxide fatty amine remover and its application field, can solve problems such as poor effect, high treatment cost, and secondary pollution, so as to protect the ecological environment, improve adsorption performance, and reduce adverse effects

Active Publication Date: 2017-11-17
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many ways to remove surfactants, including catalytic oxidation, biodegradation, ultrasonic method, micro-electrolysis, biodegradation, etc. Most of the methods have their disadvantages, such as high processing cost, poor effect, and secondary pollution. Pollution, etc.

Method used

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  • Graphene-oxide aliphatic amine removing agent and application method thereof
  • Graphene-oxide aliphatic amine removing agent and application method thereof
  • Graphene-oxide aliphatic amine removing agent and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0047] This case illustrates the preparation method of graphene oxide suspension.

[0048] 1) Weigh 1.0 g of aphanitic graphite to prepare graphite oxide. The prepared graphite oxide is first acid-washed and washed with water, and finally centrifuged with a centrifuge.

[0049]2) drying the centrifuged graphite oxide with a vacuum freeze drying oven for 48 hours, and grinding the dried graphite oxide into powder.

[0050] 3) Use a FLUKO high-shear dispersing mixer to uniformly disperse 0.2 g of graphene oxide powder in 300 mL of water.

[0051] 4) Exfoliate the graphite oxide solution for 9 minutes with a Cole Parmer (750W, 20KHz) ultrasonic cell pulverizer, and control the amplitude at 30%.

[0052] 5) The stripped suspension was centrifuged at 4000r / min for 20 minutes, and the supernatant was the graphene oxide suspension with a concentration of 0.385g / L.

[0053] 6) Product detection: The atomic force micrographs of graphene oxide are shown in Figure 1(a) and Figure 1(b)....

Embodiment example 2

[0055] This case illustrates the adsorption rate of graphene oxide adsorbent.

[0056] 1) Take the dodecylamine wastewater with a concentration of 200mg / L as the object of treatment.

[0057] 2) Mix the graphene oxide suspension (10 mL) prepared in Case 1 with 200 mg / L dodecylamine wastewater (40 mL) in a conical flask.

[0058] 3) Put the Erlenmeyer flask on the shaker, at the adsorption reaction temperature of 25°C and the shaking speed of 150rpm, the adsorption and removal times are 0.25h, 1.5h, 3h, 5h, 9h, 11h, 21h and 24h respectively.

[0059] 4) Take out the Erlenmeyer flask after the adsorption reaction is completed from the oscillator, filter the graphene oxide suspension with a filter head with a pore size of 0.22 microns to obtain the purified solution after adsorption treatment, and then measure its dodecylamine with a UV spectrophotometer residual concentration in the purified solution.

[0060] 5) According to the formula: the adsorption capacity of graphene ox...

Embodiment example 3

[0063] This case illustrates the effect of temperature and dodecylamine concentration on the adsorption capacity of graphene oxide adsorbent.

[0064] 1) Take the concentration of 0mg / L, 40mg / L, 80mg / L, 120mg / L, 160mg / L, 200 mg / L, 240mg / L, 280mg / L, 320mg / L, 360mg / L, 400mg / L Dodecylamine wastewater, as the object of treatment.

[0065] 2) Mix the graphene oxide suspension (10 mL) prepared in Case 1 with 200 mg / L dodecylamine wastewater (40 mL) in a conical flask.

[0066] 3) Put the Erlenmeyer flask on the shaker, at the adsorption reaction temperature of 25° C., 35° C., and 45° C., at the shaking speed of 150 rpm, and the adsorption and removal time is 24 hours.

[0067] 4) Take out the Erlenmeyer flask after the adsorption reaction is completed from the oscillator, filter the graphene oxide suspension with a filter head with a pore size of 0.22 microns to obtain the purified solution after adsorption treatment, and then measure its dodecylamine with a UV spectrophotometer r...

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Abstract

The invention discloses a graphene-oxide aliphatic amine removing agent and an application method thereof. Natural graphite is used to prepare graphite oxide; acid pickling is performed and then water washing is performed; centrifugation is performed; vacuum freeze drying is performed on the centrifuged graphite oxide for 24-72 hours; the dried graphite oxide is ground to powder; the powder is uniformly dispersed in water to obtain a graphite oxide solution; ultrasonic exfoliation is performed on the graphite oxide solution for 5-15 min; centrifugation is performed on the exfoliated suspension liquid; and the graphene-oxide aliphatic amine removing agent is obtained by getting the supernatant. The prepared removing agent is uniformly mixed with wastewater containing aliphatic amines; vibration and an adsorption removal reaction are performed; and finally, a gas flotation method is used for recycling of the removing agent, so that the removing agent and purified water after the adsorption reaction are obtained. The method provided by the invention uses the graphite which has a low price and rich reserves as a raw material, adopts a mature Hummer method to prepare the graphene oxide suspension liquid, and can realize good low-cost industrialized preparation. The prepared removing agent can be used to remove aliphatic amines directly, has a good adsorbing property, is easy for solid-liquid separation, and has a good industry application prospect.

Description

technical field [0001] The invention relates to a graphene oxide fatty amine removing agent, a preparation method thereof and a method for removing fatty amine in wastewater by using the removing agent. Background technique [0002] The use of surfactants is increasing year by year, and the scope of use is constantly expanding, and the harm to human health and the environment is becoming more and more serious. The harm of surfactants to human health is mainly reflected in its chronic toxicity, which can cause changes in the number of hemoglobin, red blood cells and white blood cells, and cause damage to human skin. The concentration of surfactant reaches 1mg·L -1 Surfactants can form a large amount of foam in the water body, which not only affects the landscape of the natural water body, but also forms an isolation layer on the water surface, thereby reducing the dissolution and transfer rate of oxygen, weakening the gas exchange between the water and the atmosphere, and ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F101/38
CPCC02F1/24C02F1/283C02F2101/301C02F2101/38
Inventor 李洪强丁一刚何东升翁孝卿
Owner WUHAN INSTITUTE OF TECHNOLOGY
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