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Method for removing sulfamethoxazole in water bodies with straw charcoal through adsorption and application of straw charcoal in removing sulfamethoxazole in water bodies

A technology of sulfamethoxazole and straw charcoal, applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of air traffic safety hazards, reduced visibility near the ground, and increased PM2.5 , to achieve good economic and environmental benefits, easy operation and low cost

Inactive Publication Date: 2014-01-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in autumn, when the air on the underlying surface is dominant, it is easy to reduce the visibility near the ground, and the PM2.5 (particulate matter with a particle size below 2.5 μm) in the air will increase significantly.
This will not only cause hidden dangers to the safety of land, navigation and air traffic, but also pose a threat to human health.

Method used

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  • Method for removing sulfamethoxazole in water bodies with straw charcoal through adsorption and application of straw charcoal in removing sulfamethoxazole in water bodies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The charcoal made of soybean stalks synthesized by the above method is used as an adsorbent to treat slightly polluted water containing sulfamethoxazole. Adsorption experiments were carried out in glass vials (volume 22 mL) equipped with Teflon gaskets. Among them, the mass ratio of adsorbent to polluted water is 1:3000, the adsorption temperature is room temperature, the initial concentration of sulfamethoxazole is 2-26 mg / L, the adsorption time is 3 days, and the pH of the solution after adsorption is 5.80±0.02. The final removal rate of sulfamethoxazole is between 40% and 80%.

Embodiment 2

[0038] The charcoal made of corn stalks synthesized by the above method is used as an adsorbent to treat polluted water containing sulfamethoxazole.

[0039] The preparation of adsorbent is the same as in Example 1.

[0040] The adsorption experiment conditions are as follows: the adsorption experiment is carried out in a glass bottle (volume 22 mL) equipped with a polytetrafluoroethylene gasket. Among them, the mass ratio of adsorbent to polluted water was 1:3000, the adsorption temperature was room temperature, the initial concentration of sulfamethoxazole was 2.6-57 mg / L, the adsorption time was 3 days, and the pH of the solution after adsorption was 5.80±0.02. The final removal rate of sulfamethoxazole ranges from 40% to 97%.

Embodiment 3

[0042] The charcoal made of rice straw synthesized by the above method is used as an adsorbent to treat polluted water containing sulfamethoxazole.

[0043] The preparation of adsorbent is the same as in Example 1.

[0044] The adsorption experiment conditions are as follows: the adsorption experiment is carried out in a glass bottle (volume 22 mL) equipped with a polytetrafluoroethylene gasket. Among them, the mass ratio of adsorbent to polluted water was 1:3000, the adsorption temperature was room temperature, the initial concentration of sulfamethoxazole was 1.5-21 mg / L, the adsorption time was 3 days, and the pH of the solution after adsorption was 5.80±0.02. The final removal rate of sulfamethoxazole is between 50% and 99%.

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Abstract

The invention discloses a method for removing sulfamethoxazole in water bodies with crop straw charcoal through adsorption. The method is characterized by comprising a step of putting crop straw charcoal into water bodies containing sulfamethoxazole as an adsorbent to adsorb and remove sulfamethoxazole in the water bodies, wherein the adsorption temperature is 20-30 DEG C; the adsorption time is 72-75 hours; the pH value of solution after adsorption equilibrium is 5.8-6.0; the initial concentration of sulfamethoxazole in the water bodies is 1.5-57mg / L; the mass ratio of the crop straw charcoal to the water bodies containing sulfamethoxazole is 1:(2000-4000). Under the condition of room temperature, after adsorption for 3 days, the crop straw charcoal shows a high antibiotics adsorption removal rate. Besides, the method has the beneficial effects that the materials are simple to prepare; the method is convenient to operate; the cost is low; the raw materials are accessible; medicine pollution is effectively eliminated; the current technical gaps are filled in.

Description

technical field [0001] The invention belongs to the technical scope of inorganic material synthesis and water treatment, and mainly relates to a method for adsorbing and removing sulfamethoxazole in water by straw charcoal. Background technique [0002] Sulfamethoxazole (smx), also known as sulfamethoxazole, is a broad-spectrum antibiotic. It has inhibitory effect on most Gram-positive and Gram-negative bacteria, and is widely used in medical treatment and animal husbandry. Since most of sulfamethoxazole cannot be completely absorbed by organisms, sulfamethoxazole enters the soil and water environment in the form of parent compounds or metabolites, thereby polluting the ecological environment. At present, many countries have detected various types and concentrations of sulfamethoxazole in activated sludge of sewage treatment plants, surface water, and even drinking water. Because sulfamethoxazole induces drug-resistant bacteria in the environment, affects microorganisms in...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/58B01J20/20B01J20/30
Inventor 朱东强谢梦醒
Owner NANJING UNIV
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