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A method for adsorbing antibiotics in water using multi-walled carbon nanotubes/metal-organic framework composites

A technology of multi-walled carbon nanotubes and metal organic frameworks, which is applied in the directions of alkali metal compounds, adsorbed water/sewage treatment, chemical instruments and methods, etc. Adsorption performance, increased use of MOFs, etc., to achieve the effect of simple treatment process and adsorption equipment, high application value and commercial value, and fast adsorption speed

Active Publication Date: 2019-09-17
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, metal-organic frameworks have the problem of poor stability in aqueous solution, and cannot obtain good adsorption performance. At the same time, due to poor stability, the amount of MOFs used in the liquid phase will increase. Compared with the use in the gas phase, Will greatly increase the processing cost, so the application in the liquid phase is greatly limited
In addition, the existing preparation methods of metal organic framework materials have problems such as complicated steps, many types of raw materials, and long time consumption, which are not conducive to low-cost and mass production of metal organic framework materials

Method used

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  • A method for adsorbing antibiotics in water using multi-walled carbon nanotubes/metal-organic framework composites
  • A method for adsorbing antibiotics in water using multi-walled carbon nanotubes/metal-organic framework composites
  • A method for adsorbing antibiotics in water using multi-walled carbon nanotubes/metal-organic framework composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for utilizing multi-walled carbon nanotubes / metal organic framework composites to adsorb antibiotics in water bodies, comprising the following steps:

[0038] Weigh 100 mg multi-walled carbon nanotubes / metal organic framework composites (MWCNT / MIL-53(Fe)-1%), multi-walled carbon nanotubes / metal organic frameworks composites (MWCNT / MIL-53(Fe)- 5%), multi-walled carbon nanotubes / metal-organic framework composites (MWCNT / MIL-53(Fe)-10%), multi-walled carbon nanotubes / metal-organic frameworks composites (MWCNT / MIL-53(Fe)- 20%), multi-walled carbon nanotubes / metal-organic framework composites (MWCNT / MIL-53(Fe)-30%), respectively added to 100mL tetracycline hydrochloride solution with a concentration of 20mg / L, mixed and dispersed evenly, at a speed of The vibration adsorption was carried out at 400r / min for 12 hours. During the vibration adsorption process, the pH value of the system was controlled to be 7.0, and the treatment of the tetracycline hydrochloride solut...

Embodiment 2

[0051] Investigate the water stability of the multi-walled carbon nanotube / metal organic framework composite material of the present invention, comprise the following steps:

[0052] Weigh 1 part of multi-walled carbon nanotube / metal organic framework composite material (MWCNT / MIL-53(Fe)-20%) prepared in Example 1 and 1 part of metal organic framework material (MIL-53(Fe)), each 20mg, were added to 50mL deionized water, and allowed to stand for 30 days. Continuously take samples to check the concentration of iron ions in the water.

[0053] Figure 6 It is the effect diagram of water stability of the multi-walled carbon nanotube / metal organic framework composite material (MWCNT / MIL-53(Fe)-20%) in Example 2. Figure 6 In this paper, the water stability of the material is evaluated by the concentration of iron ions dissolved in the aqueous solution, and the lower the concentration of iron ions in the aqueous solution, the better the water stability of the material. Depend on ...

Embodiment 3

[0057] A method for utilizing multi-walled carbon nanotubes / metal organic framework composites to adsorb antibiotics in water bodies, comprising the following steps:

[0058] Weigh 3 parts of the multi-walled carbon nanotube / metal-organic framework composite (MWCNT / MIL-53(Fe)-20%) prepared in Example 1, 20 mg each, and add to 50 mL of tetracycline hydrochloride with a concentration of 20 mg / L solution, chlortetracycline hydrochloride solution and oxytetracycline hydrochloride solution, mixed and dispersed evenly, and oscillated and adsorbed at a speed of 400r / min for 24 hours. During the oscillating adsorption process, the pH of the system was controlled to be 7.0, and the treatment of the antibiotic solution was completed.

[0059] During the oscillation adsorption process, 1mL samples were taken at regular intervals, and the samples were centrifuged, and the supernatant obtained after centrifugation was taken to measure the absorbance by a UV-visible spectrophotometer to dete...

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Abstract

The invention discloses a method for adsorbing antibiotics in water through a multi-walled carbon nanotube / metal organic framework composite material. The method comprises mixing a multi-walled carbonnanotube / metal organic framework composite material and antibiotic waste water and carrying out oscillating adsorption for treatment on the antibiotic waste water, wherein the multi-walled carbon nanotube / metal organic framework composite material contains multi-walled carbon nanotubes and MIL-53(Fe). The method can efficiently adsorb antibiotics in waste water, utilizes simple treatment processes and simple adsorption equipment, is easy to operate, realizes a low cost, a large adsorption capacity, a fast adsorption rate and a high repeating utilization factor, is clean, prevents pollution, can be widely used, can efficiently remove the antibiotics in water and has high application values and commercial values.

Description

technical field [0001] The invention belongs to the field of antibiotic waste water adsorption treatment, and relates to a method for absorbing antibiotics in water using a multi-wall carbon nanotube / metal organic framework composite material. Background technique [0002] Pharmaceutical and personal care products (PPCPs), as a representative emerging pollutant, have received extensive attention due to their persistence in surface water and groundwater. More seriously, PPCPs have been found in the tissues of fish and vegetables. PPCPs can be ingested into organisms in various ways, which may cause endocrine disorders and have a profound impact on human health. Tetracycline antibiotics are one of the typical PPCPs, mainly including tetracycline hydrochloride, chlortetracycline hydrochloride and oxytetracycline hydrochloride, which have been widely used in the prevention of animal and human infectious diseases for a long time. However, the increasing use of tetracycline anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/30C02F101/34C02F101/38
Inventor 曾光明熊炜平杨朝晖赖萃张辰程敏胡亮周成赟李鑫徐锐张燕茹汤湘
Owner HUNAN UNIV
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