Method for treating antibiotic and heavy metal combined pollution water by using modified graphene oxide

A compound pollution and antibiotic technology, applied in chemical instruments and methods, alkali metal compounds, water pollutants, etc., can solve the problems of not being able to remove heavy metals and antibiotics at the same time, reducing the concentration of ciprofloxacin and copper, and high cost of adsorbents, etc. Achieve the effects of easy recycling, wide source of raw materials, and non-toxic effect

Inactive Publication Date: 2017-03-22
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a magnetic graphene oxide composite material modified by amination to simultaneously remove ciprofloxacin

Method used

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  • Method for treating antibiotic and heavy metal combined pollution water by using modified graphene oxide
  • Method for treating antibiotic and heavy metal combined pollution water by using modified graphene oxide
  • Method for treating antibiotic and heavy metal combined pollution water by using modified graphene oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 6g graphite powder, 5gK 2 S 2 o 8 , 5gP 2 o 5 Add to 24 mL of 98% HO 2 SO 4 in 80°C for 4.5h. Cool to room temperature, add 1L ultrapure water to dilute and leave overnight for 12h. The mixture was filtered and rinsed with deionized water to neutralize residual acid. Oven drying at 60°C to obtain pre-oxidized graphite; add pre-oxidized graphite to 240mL98%H 2 SO 4 In solution (0°C). Add 5g NaNO while stirring 3 , 30gKMnO 4 React for 4 hours under ice bath condition. Then the temperature was raised to 35°C for 2 hours, 500 mL of ultrapure water was added and reacted for 1 hour at 98°C, and then 1L of ultrapure water and 40 mL of 30% H were added at room temperature. 2 o 2 , continue to react for two hours. The obtained mixture was washed with 10% HCl, then washed with a large amount of water to neutrality, added water to constant volume, and ultrasonically dispersed for 2 hours to obtain a graphene oxide aqueous suspension; 100mL of 0.1mol / L ferric chlorid...

Embodiment 2

[0028] In the mixed solution of ciprofloxacin and copper with different pH values, add the above-mentioned magnetic graphene oxide modified with nitrilotriacetic acid, comprising the following steps:

[0029] Add 0.0033g of nitrilotriacetic acid-modified magnetic graphene oxide composite material into 25mL of a mixed solution of 50mg / L ciprofloxacin and 10mg / L copper, adjust the pH to 4.0-10.0, and perform oscillation adsorption in a water bath constant temperature oscillator at 25°C After 14 hours, the adsorbent was separated from the waste water by a magnet, and the content of unadsorbed ciprofloxacin in the waste water was measured at 276nm with an ultraviolet spectrophotometer, and the unadsorbed copper in the waste water was measured with an atomic absorption spectrometer. content, the calculated adsorption results are shown in Table 1:

[0030] Table 1: Adsorption data of ciprofloxacin and copper by adsorbents under different pH conditions

[0031]

[0032] It can be...

Embodiment 3

[0034] Add copper solutions of different concentrations to the ciprofloxacin solution, and then add the above-mentioned nitrilotriacetic acid-modified magnetic graphene oxide, comprising the following steps:

[0035] Add 0-4mg / L copper ions to the ciprofloxacin solution with an initial concentration of 50mg / L, add 0.0033g nitrilotriacetic acid-modified magnetic graphene oxide composite material, and carry out oscillating adsorption reaction in a constant temperature oscillator in a water bath at 25°C. After 14 hours, the adsorbent was separated from waste water by magnet, and the content of unadsorbed ciprofloxacin in waste water was measured at 276nm with a UV spectrophotometer, and the calculated adsorption amount results are shown in table 2:

[0036] Table 2: Adsorption data of ciprofloxacin by adsorbents at different copper concentrations

[0037] Copper concentration (mg / L) 0 0.01 0.1 0.5 1 2 4 Ciprofloxacin adsorption capacity (mg / g) 236.10 222.9...

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Abstract

The invention relates to a method for treating antibiotic and heavy metal combined pollution water by using modified graphene oxide. Specifically, nitrilotriacetic acid modified magnetic graphene oxide is taken as an adsorbent and then added to ciprofloxacin and heavy metal ion combined pollution water. An experiment result proves that each gram of the adsorbent contains almost hundreds of milligrams of exchanging ciprofloxacin by mass, the mass of exchanging copper ions reaches more than 60 milligrams, amination modified magnetic graphene oxide has a very good adsorption effect on ciprofloxacin and copper ions, and solids and liquids can be well separated after adsorption. Compared with the prior art, the treatment method is simple, the material preparation and operation cost is low, and antibiotics and heavy metals in the water can be effectively and simultaneously removed.

Description

technical field [0001] The invention belongs to the field of environmental functional materials and water treatment new technologies, and relates to a treatment method for simultaneously removing antibiotics and heavy metals in water, in particular to a method for simultaneously removing ciprofloxacin and copper in water by using aminated magnetic graphene oxide. Background technique [0002] Antibiotics are widely used to treat bacterial infections in humans and animals, and are often added to animal feed to prevent disease and promote growth. In China, approximately 2.1×10 5 tons of antibiotics are produced, and 85% of them are used in the livestock and medical industries. Most antibiotics are difficult to be removed by traditional sewage treatment plants, and will eventually enter the environment in the form of prototypes or metabolites. The pollution problem has gradually attracted widespread attention. However, in actual polluted water bodies, antibiotics are mostly m...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20C02F101/34C02F101/36C02F101/38
CPCB01J20/205B01J20/22B01J20/28007B01J20/28009C02F1/288C02F2101/20C02F2101/34C02F2101/36C02F2101/38
Inventor 李美芳刘云国舒鼎胡新将刘少博曾光明闫芝丽江卢华谭小飞刘妮
Owner HUNAN UNIV
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