Method for adsorbing tetracycline in underground water by using green rust

A tetracycline and groundwater technology, applied in the direction of adsorption water/sewage treatment, contaminated groundwater/leachate treatment, chemical instruments and methods, etc., can solve the problems of ecological system damage, endangering human life and health, and achieve the effect of ensuring safety

Pending Publication Date: 2020-11-24
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Tetracycline is difficult to degrade naturally, after long-term accumulation and food chain enrichment, it will cause damage to the ecosystem, induce drug-resistant bacteria, and endanger human life and health

Method used

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  • Method for adsorbing tetracycline in underground water by using green rust
  • Method for adsorbing tetracycline in underground water by using green rust
  • Method for adsorbing tetracycline in underground water by using green rust

Examples

Experimental program
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Effect test

Embodiment 1

[0015] A method for patina to adsorb tetracycline in groundwater. In an anaerobic incubator, add 8 mL of TC solution with an initial concentration of 5 mg / L and GR of 2 g / L to an 8 mL brown extraction bottle. Close the bottle cap tightly and place it on a QB-328 rotary incubator to rotate in the dark at a speed of 45r / min. Samples are taken regularly. All samples are separated from solid and liquid through a 0.45 μm filter membrane to realize the adsorption of tetracycline. The water samples obtained from solid-liquid separation were analyzed by high-performance liquid chromatography.

[0016] In this embodiment, green rust (GR) can effectively adsorb TC in groundwater. figure 1 is the effectiveness of GR in adsorbing TC in water. The dosage of GR was 2g / L, the initial concentration of TC was 5mg / L, and the removal rate of TC adsorbed by GR was about 97% after 12 hours of reaction. figure 2 is the efficiency of GR to adsorb TC in water under different GR dosages. After 12 ...

Embodiment 2

[0018] In an anaerobic incubator, add 8 mL of TC solution with an initial concentration of 1 mg / L and 0.5 g / L of GR to an 8 mL brown extraction bottle respectively, tightly cap the bottle and place it on a QB-328 rotary incubator at 30 r / min The rotation speed was protected from light, and the reaction was carried out for 12 hours. All the samples were separated from the solid and liquid through a filter membrane of 0.45 μm, and the removal rate of tetracycline was 99.4%.

Embodiment 3

[0020] In an anaerobic incubator, add 8mL of TC solution with an initial concentration of 80mg / L and 8g / L of GR to an 8mL brown extraction bottle respectively, tightly cap the bottle and place it on a QB-328 rotary incubator at a speed of 70r / min. The rotating speed was protected from light, and the reaction was carried out for 12 hours. All the samples were separated through a 0.45 μm filter membrane for solid-liquid separation, and the removal rate of tetracycline reached 66.2%.

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Abstract

The invention discloses a method for adsorbing tetracycline in underground water by using green rust. The method comprises the following steps: adding 0.5-8g / L green rust into a reaction bottle filledwith a solution with TC initial concentration of 1-80mg / L in an anaerobic incubator, tightly capping the bottle, placing the bottle on a rotary incubator to rotate away from light at a rotating speedof 30-70 r / min, performing timing sampling, and performing solid-liquid separation on obtained samples through a 0.45-micron filter membrane so as to achieve tetracycline adsorption. The method provided by the invention for adsorbing tetracycline in underground water by using green rust can effectively control the potential toxic substance TC in the underground water and ensure the safety of thedrinking water source of the underground water.

Description

technical field [0001] The invention belongs to the field of groundwater treatment and relates to a treatment method for metal oxide adsorption. Background technique [0002] Tetracycline (TC) is a typical substance in antibiotic drugs, which is mainly used in medical and animal husbandry. Due to the rapid development of medical and animal husbandry, TC is used more and more frequently, and abuses gradually appear. Due to the poor bioavailability of TC by humans and livestock, most of it is discharged into the environment in the form of feces. TC is difficult to degrade naturally, and is continuously deposited and enriched in the natural environment. However, TC in the environment will eventually flow into groundwater through various channels. Groundwater is used as a supplementary source of drinking water for human beings. Antibiotics in groundwater have been concerned about in the early days worldwide. Some countries in Europe and the United States have successively det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/06C02F101/34C02F101/36C02F101/38C02F103/06C02F101/30
CPCC02F1/281B01J20/06C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2103/06C02F2101/30C02F2209/06
Inventor 韩莹吴召张克敏刘宏远陆青杰闫晓菲
Owner ZHEJIANG UNIV OF TECH
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