Method for removing drugs in soil by utilizing magnetism molecular imprinting-electromagnetism grating combination

A magnetic molecular imprinting and grid technology, applied in the field of environmental protection, achieves the effects of low cost, low energy consumption and simple system structure

Inactive Publication Date: 2013-06-26
TONGJI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the restoration and utilization of drug-contaminated soil, to provide a method for using magnetic molecular i

Method used

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  • Method for removing drugs in soil by utilizing magnetism molecular imprinting-electromagnetism grating combination
  • Method for removing drugs in soil by utilizing magnetism molecular imprinting-electromagnetism grating combination
  • Method for removing drugs in soil by utilizing magnetism molecular imprinting-electromagnetism grating combination

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Embodiment 1

[0028] The soil was taken from the Chongming Island soil sample. First, the soil was pretreated. The soil sample was dried in a vacuum drying oven, and the dried soil was ground with a grinder. The soil sample was soaked in an aqueous solution containing carbamazepine. The treated soil samples contained 0.6-0.8 mg / g carbamazepine. The pretreated soil and water were fully mixed in the main reaction zone (the height of the main reaction zone was 114.5 cm, the width was 200 cm, the height of the soil settlement zone was 50 cm, and the height of the electromagnetic grid was 119.5 cm). After stirring at room temperature for 0.5 h, the Add magnetic molecular imprinting to the water-soil mixture, adjust the pH of the mixture (pH about 2~3), fully contact and react for 0.5-2 h under the stirring action of the electromagnetic grid, and then turn on the power of the electromagnetic grid to make the magnetic The molecular imprint is adsorbed to the surface of the electromagnetic grid und...

Embodiment 2

[0030] Soil samples were taken from different depths (surface soil, -0.1 m, -0.2 m, -0.3 m, -0.4 m, -0.5 m, -0.6 m, -0.7 m) at the same location in Chongming Island, and the soil samples were dried After pretreatment such as grinding and grinding, soak soil samples at different depths with aqueous solutions containing carbamazepine. The average carbamazepine content in soil pretreatment samples at different depths is 0.6-0.8 mg / g.

[0031] The pretreated soil and water were fully mixed in the main reaction zone (the height of the main reaction zone was 114.5 cm, the width was 200 cm, the height of the soil settlement zone was 50 cm, and the height of the electromagnetic grid was 119.5 cm). After stirring at room temperature for 0.5 h, the Add magnetic molecular imprints to the water-soil mixture (the amount of magnetic molecular imprints added to soil samples at different depths is the same), adjust the pH of the mixture (pH is about 2~3), stir under the stirring action of the ...

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Abstract

The invention relates to a method for removing drugs in soil by utilizing magnetism molecular imprinting-electromagnetism grating combination. The drugs are one or more of carbamazepine, clofibric acid or diclofenac. The method comprises the following specific steps of: fully mixing preprocessed soil and a magnetism molecularly imprinted polymer, absorbing the drugs in the soil on the surface of the magnetism molecular imprinting, and separating the water soil and the magnetism molecularly imprinted polymer after reaction through an electromagnetism grid; and absorbing the magnetism molecular imprinting on the grid through a magnetic field generated by the electromagnetism grid after electrification, and effectively separating the magnetism molecular imprinting and the grid. The method provided by the invention has the advantages that the operation is simple, the effect is obvious, the arbamazepine, the clofibric acid and the diclofenac and the like in the soil are removed in one time, the drugs absorbed on the magnetism molecular imprinting are recovered and separated through the electromagnetism grid; a magnetism molecular imprinting technology is utilized to restore the soil polluted by the drugs and has the advantages that the cost is low, the restoring efficiency is high and the like; and an electromagnetism grid device is utilized to recycle the resources, so that secondary pollution is not caused.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to the purification technology of soil contaminated by drugs, in particular to a method for removing drugs in soil by using magnetic molecular imprinting-electromagnetic grid. Background technique [0002] With the improvement of human social and economic capabilities and the gradual enhancement of medical and nursing awareness, the use and scope of corresponding pharmaceuticals and personal care products (PPCPs) are also expanding rapidly. In 2006, the research results of Alder et al. showed that the per capita annual consumption of drugs in the world is about 15 g, which corresponds to the per capita annual consumption of 50-150 g / year in industrialized countries. According to the survey by the Ministry of Health of my country, China produces about 210,000 tons of antibiotic raw materials every year, and the per capita annual consumption is about 138 g, which is 10 t...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 代朝猛周雪飞张亚雷刘彦静
Owner TONGJI UNIV
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