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Application of KOH activated active carbon to removing antibiotics in water body through adsorption

A technology of activated carbon and antibiotics, which is applied to the application field of antibiotic drugs, can solve the problems of low adsorption capacity of antibiotics, limited application, etc., and achieves the effects of convenient operation, low cost, good economic and environmental benefits

Inactive Publication Date: 2011-08-17
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general commercial activated carbon contains a large number of irregular microporous structures (pore size less than 2nm), which may cause molecular sieve effect when adsorbing macromolecular antibiotics, resulting in low adsorption capacity of antibiotics, which limits its ability to remove antibiotics from water. Aspects of application
[0004] KOH activation method is a kind of activated carbon preparation method, but the use of KOH activated activated carbon to expand its micropores to a suitable pore size to improve its adsorption and removal capacity for antibiotics has not yet been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Using KOH-activated activated carbon as an adsorbent to treat polluted water containing sulfapyridine.

[0018] Preparation of activated carbon activated by KOH: Weigh 5g KOH and 1g activated carbon, grind and mix them evenly, and put them into a nickel boat. The nickel boat was placed in a horizontally placed tube furnace, and under the protection of nitrogen (40ml / min), the temperature was raised to 850°C at 5°C / min and kept for 2h. After the reaction, the obtained material was repeatedly washed with deionized water until neutral, dried at 100° C., and set aside.

[0019] Adsorption and removal of sulfapyridine in water by activated carbon activated by KOH: The adsorption experiment was carried out in a glass bottle (volume 40ml) equipped with a polytetrafluoroethylene gasket. Among them, the mass ratio of adsorbent to polluted water is 1:4000, the adsorption temperature is room temperature, the initial concentration of sulfapyridine is 50-150mg / L, the adsorption tim...

Embodiment 2

[0024] Using KOH-activated activated carbon as an adsorbent to treat contaminated water containing sulfamethoxazole.

[0025] The preparation of adsorbent is the same as in Example 1.

[0026] The adsorption experiment conditions are: the mass ratio of adsorbent to polluted water is 1:4000, the adsorption temperature is room temperature, the initial concentration of sulfamethoxazole is 60-90mg / L, the adsorption time is 1d, and the pH of the solution after adsorption is 5.82± 0.00. The final removal rate of sulfamethoxazole is over 99.7%.

Embodiment 3

[0031] Using KOH-activated activated carbon as an adsorbent to treat tetracycline-containing contaminated water.

[0032] The preparation of adsorbent is the same as in Example 1.

[0033] The adsorption experiment conditions are: the mass ratio of adsorbent to polluted water is 1:4000, the adsorption temperature is room temperature, the initial concentration of tetracycline is 200-220 mg / L, the adsorption time is 2 days, and the pH of the solution after adsorption is 6.14±0.01. The final removal rate of tetracycline was over 99.7%.

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PUM

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Abstract

The invention discloses application of KOH activated active carbon to removing antibiotics in water body through adsorption. The invention is characterized in that the KOH activated active carbon is prepared from KOH and active carbon under high temperature and is used as an adsorbent. In the invention, the polluted water containing antibiotics is treated. Under room temperature, the KOH activated active carbon shows high antibiotics adsorption removal rate after carrying out adsorption for 1-3 days. In addition, the material is simple to prepare and convenient to operate and has low cost. Visibly, the KOH activated active carbon has good economic and environmental benefits in removing the antibiotics in water body.

Description

technical field [0001] The invention belongs to the technical scope of inorganic material synthesis and water treatment, and mainly relates to the application of active carbon activated by KOH to adsorb and remove antibiotics in water bodies. Background technique [0002] With the rapid development of medical care and animal husbandry, the use of antibiotics as antibacterial growth promoters and prevention and treatment of infectious diseases has increased dramatically. Antibiotics are difficult to be metabolized after entering the human or animal body, and most of them still enter the water environment in the form of parent compounds. Antibiotics have been detected in surface water, groundwater and even drinking water in many countries. A large number of studies have shown that these antibiotics left in water will cause harm to various organisms, induce microbial resistance, and then threaten the safety of the ecological environment and human health. It can be seen that t...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/58
Inventor 朱东强付翯云郑寿荣
Owner NANJING UNIV
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