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Device for removing methyl mercury in low-temperature seawater and manufacturing method thereof

A technology for methylmercury and seawater, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve problems affecting environmental quality and ecological safety, complicated operation, temperature influence, etc., and achieve faster adsorption speed and structure Uniform, ensure the effect of adsorption removal

Pending Publication Date: 2020-05-22
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nano-method uses nano-materials to remove mercury ions in seawater, but the operation is complicated and the cost is high; the dry-sludge method uses dry sludge to adsorb low-concentration methylmercury, but the effect is poor; the material-based method uses composite materials to remove inorganic mercury , but very unstable
And the removal of methylmercury is easily affected by the temperature in the environment, especially in low temperature environment, it is not easy to remove, which affects environmental quality and ecological security

Method used

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  • Device for removing methyl mercury in low-temperature seawater and manufacturing method thereof
  • Device for removing methyl mercury in low-temperature seawater and manufacturing method thereof
  • Device for removing methyl mercury in low-temperature seawater and manufacturing method thereof

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Embodiment 1

[0032] Simultaneously the present invention also provides a kind of method for preparing above-mentioned device, comprises the following steps:

[0033] S1. Dilute 0.48g of particles into ultrapure water preheated to 80°C, mix well, place it in a boiling water constant temperature water bath, cover and stir gently until all the agarose particles are completely dissolved, and the solution It is transparent. Immediately use a pipette to transfer the solution onto a preheated glass slide, and let it stand for 1 hour. After the temperature drops below 36°C, cut the gel into a hexahedron, and dig holes on each side, and finally wash it in ultrapure water. save in .

[0034]S2. Take 2.5ml of DGT glue solution and place it in a 10ml plastic centrifuge tube, add 0.38g of mercapto silica gel (1.5g per 10ml), shake to mix well; then add 24μL of ammonium persulfate solution and 7.4μL of TEMED Shake it to make it fully mixed; use a pipette to draw an appropriate amount of the mixed solu...

Embodiment 2

[0037] This embodiment is the same as the method of step S1-S2 in embodiment 1, the difference is that step S3 is different, as follows: S3, take a plurality of plastic plates and hollow out the center, and the 3-mercaptopropyl group cut in step S2 Functionalized silica gel particles are placed in the center groove of each side of the agarose gel, and nitrocellulose membranes are attached to each side of the agarose gel, and then the agarose gels covered with nitrocellulose membranes are placed on each side. Glue is placed in the frame, and finally the remaining plastic sheet is fixed to the frame.

[0038] The present invention increases the contact area between methylmercury and agarose gel by constructing a polyhedron, so that methylmercury can diffuse into 3-mercaptopropyl functionalized silica gel from multiple surfaces, thereby accelerating the functionalization of 3-mercaptopropyl group The adsorption speed of methylmercury on silica gel can promote the rapid purificati...

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Abstract

The invention provides a device for removing methyl mercury in low-temperature seawater and a manufacturing method of the device. The device is of a polyhedral structure. The polyhedral structure is provided with a polyhedral frame; wherein a polyhedral agarose gel is arranged in the polyhedral frame; a hole is formed in the center of each surface of the agarose gel and is filled with 3-mercaptopropyl functionalized silica gel; each surface of the agarose gel is covered with a nitrocellulose membrane covering the surface of the 3-mercaptopropyl functionalized silica gel and the surface of theagarose gel, and the thickness of the nitrocellulose membrane is 0.45 [mu]m. The device is not influenced by external temperature and heavy metal types, is simple in overall structure, convenient to use, high in seawater purification degree and good in removal effect of methyl mercury in low-temperature seawater, and can reduce the content of methyl mercury in the low-temperature seawater.

Description

technical field [0001] The invention belongs to the field of removing heavy metals in water bodies and purifying seawater, and more specifically relates to a device for removing methylmercury in low-temperature seawater and a manufacturing method thereof. Background technique [0002] With the rapid development of my country's economy and society and the advancement of science and technology, the consumption and discharge of mercury are increasing day by day, and a large amount of mercury-containing waste such as solid and liquid is washed and permeated out with runoff, seriously endangering the safety of receiving water bodies and biological health. Mercury is widely distributed, harmful, and highly mobile. It is one of the world-recognized high-risk inorganic pollutants. Mercury is methylated to form methylmercury, which is fat-soluble while inheriting the toxicity of mercury. Compared with other forms such as inorganic mercury and elemental mercury, methylmercury can com...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/28B01J20/26B01J20/30C02F101/20
CPCB01J20/262B01J20/28047C02F1/285C02F2101/20
Inventor 张饮江区丽华卢家磊徐成龙
Owner SHANGHAI OCEAN UNIV
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