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Method for removing antibiotic contamination by adsorption of copper sulphide

A technology for antibiotics and pollutants, which is applied in the fields of adsorption water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc. The effect of fast speed, low cost and large adsorption capacity

Inactive Publication Date: 2013-07-17
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, ion exchange method, biological treatment method, activated carbon adsorption method and sand filtration method cannot achieve the purpose of deep removal due to the lack of necessary selectivity for low-concentration antibiotics in water.
Although the membrane filtration method and the advanced oxidation method have a high removal effect, the operation of the two processes is complicated, the energy consumption is high, and the advanced oxidation method is prone to produce other toxic by-products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The specific surface area of ​​1.6ml (about 1 gram) is 100m 2 / g copper sulfide with an average particle size of 30nm was loaded into a jacketed glass adsorption column (Φ12×160mm) to obtain a copper sulfide bed.

[0018] After filtering the tetracycline wastewater with a concentration of 200mg / L, adjust the pH value to 6.0, and pass through the copper sulfide bed at a flow rate of 24mL / h under the condition of 25±5°C, and the treatment capacity is 1000mL / batch. After being adsorbed by copper sulfide, the average concentration of tetracycline in the effluent is 0.01mg / L. When the adsorption reaches the leakage point (the immediate concentration of tetracycline in the effluent is 1% of the influent concentration), the waste water stops flowing into the bed. .

[0019] 1mol / L hydrochloric acid is desorbed through the copper sulfide bed at a temperature of 30±5°C at a flow rate of 3mL / h. Tetracycline hydrochloride can be recovered from the desorption solution.

Embodiment 2

[0021] The specific surface area of ​​1.6ml (about 1 gram) is 100m 2 / g copper sulfide with an average particle size of 30nm was loaded into a jacketed glass adsorption column (Φ12×160mm) to obtain a copper sulfide bed.

[0022] After filtering the tetracycline wastewater with a concentration of 10mg / L, adjust the pH value to 7.0, and pass through the copper sulfide bed at a flow rate of 24mL / h under the condition of 20±5°C, with a treatment capacity of 2000mL / batch. After being adsorbed by copper sulfide, the average concentration of tetracycline in the effluent is 0.005mg / L. When the adsorption reaches the leakage point, that is, when the immediate concentration of tetracycline in the effluent is 5% of the influent concentration, the waste water stops flowing into the bed.

[0023] 0.1mol / L hydrochloric acid is desorbed through the copper sulfide bed at a temperature of 25±5°C and a flow rate of 1.6 mL / h. Tetracycline hydrochloride can be recovered from the desorption solu...

Embodiment 3

[0025] The specific surface area of ​​1.6 ml (about 1 gram) is 100m 2 / g copper sulfide with an average particle size of 30nm was loaded into a jacketed glass adsorption column (Φ12×160mm) to obtain a copper sulfide bed.

[0026] After filtering the tetracycline wastewater with a concentration of 1mg / L, adjust the pH value to 5.0, and pass through the copper sulfide bed at a flow rate of 50mL / h under the condition of 25±5°C, and the treatment capacity is 3000mL / batch. After being adsorbed by copper sulfide, the average concentration of tetracycline in the effluent is 0.001mg / L. When the adsorption reaches the leakage point, that is, the immediate concentration of tetracycline in the effluent is 3% of the influent concentration, the waste water stops flowing into the bed.

[0027] 0.1mol / L hydrochloric acid is desorbed through the copper sulfide bed at a temperature of 30±5°C at a flow rate of 1.6mL / h. Tetracycline hydrochloride can be recovered from the desorption solution. ...

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PUM

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Abstract

The invention provides a method for removing antibiotic contamination by adsorption of copper sulphide, and belongs to the field of water pollution control. The method comprises the steps of filtering waste water containing antibiotic contamination, adjusting pH to 5-9; and filtering the waste water processed in the step (1) through a bed layer containing the copper sulphide, wherein the antibiotic contamination is any one of tetracyclines, penicillins, macrolides, and sulfonamide fluoroquinolone antibiotic. Compared with the traditional removal technology of the antibiotic in a water body, the method disclosed by the invention has the beneficial effects that 1 the antibiotic contamination in the water body can be selectively complexed and removed; and the effluent concentration can be less than 1mug / L; 2, the adsorbing capacity is large; and the adsorbing capacity of copper sulphide can be up to 500mg / g; and 3, the method is fast in adsorption rate, easy to regenerate, simple and convenient to operate, low in cost and free of secondary pollution.

Description

technical field [0001] The invention belongs to the field of water pollution control, and in particular relates to a method for removing antibiotic pollutants in water by adsorption of copper sulfide. Background technique [0002] Since the discovery of penicillin in 1928, antibiotics have been widely used by humans to treat diseases and are also widely used in poultry farming, aquaculture, food processing and agriculture. Most of the antibiotics taken by humans and animals and used in agriculture cannot be fully absorbed and utilized. Most antibiotics directly enter the water body environment with excrement, resulting in the widespread detection of antibiotic pollutants in the water body environment. Although the half-life of many antibiotics is not long, due to their frequent use and entry into the environment, they have formed a "pseudo-persistence" phenomenon, which in turn poses long-term potential risks to human safety and the entire ecosystem. As the pollution of ant...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/58
Inventor 许正文赵云龙陆建刚承玲史静张晶晶方华陈敏东
Owner NANJING UNIV OF INFORMATION SCI & TECH
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