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

A sulfapyridine, straw charcoal technology, applied in the fields of adsorption water/sewage treatment, chemical instruments and methods, water pollutants, etc. Economical and environmental benefits, low cost, effect of protecting the environment

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 sulfapyridine in water bodies with straw charcoal through adsorption and application of straw charcoal in removing sulfapyridine in water bodies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The charcoal made of rice straw synthesized by the above method is used as an adsorbent to treat the slightly polluted water containing sulfapyridine. 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 sulfapyridine is 3-24 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 sulfapyridine is between 40% and 93%.

Embodiment 2

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

[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 is 1:3000, the adsorption temperature is room temperature, the initial concentration of sulfapyridine is 2-50 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 sulfapyridine was between 41% and 95%.

[0041] It can be seen that crop straw charcoal has a good removal effect on sulfapyridine in water.

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Abstract

The invention discloses a method for removing sulfapyridine 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 sulfapyridine as an adsorbent to adsorb and remove sulfapyridine 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 sulfapyridine in the water bodies is 2-50mg / L; the mass ratio of the crop straw charcoal to the water bodies containing sulfapyridine 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 sulfapyridine in water by straw and charcoal. Background technique [0002] Sulfapyridine, aliased as 2-sulfapyridine, 4-amino-N-(2-pyridyl)benzenesulfonamide, p-amine-N-2-pyridinebenzenesulfonamide, 4-Amino-N-(2 -pyridinyl)benzene sulfonamide, 4-(2-Pyridinylsulfonyl)aniline, 1. Properties: yellowish brown to white powder; 2. Melting point (°C): 191-193°C; 3. Solubility: slightly soluble in water. It 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 sulfapyridine cannot be completely absorbed by organisms, sulfapyridine enters the soil and water environment in the form of parent compounds or metabolites, thereby polluting the ecological environment. At present, many co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C01B31/08B01J20/20B01J20/30C02F101/38C01B32/324
Inventor 朱东强谢梦醒
Owner NANJING UNIV
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