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Polymer material for selective adsorption of heavy metal ions based on sulphonic acid resin and preparation method thereof

A technology of heavy metal ions and sulfonic acid resin, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem of no selectivity of metal ions, and achieve the effect of regeneration and recycling

Active Publication Date: 2011-11-23
SHANDONG DONGYUE POLYMER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, current ion exchange resins or adsorbents have little selectivity for metal ions in water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take a total of 25 grams of perfluorosulfonic acid resin (ion exchange capacity of 1.2 mmol / g) and zinc acetate with a mass ratio of 8:1 and dissolve in 245 grams of solvent N-N dimethylacetamide (DMAc), and stir at 40 ° C 12 hours; then add 16 grams of pore-forming agent polyvinylpyrrolidone (PVP), take 87 grams of dried powdered polyvinylidene fluoride and add it to the above-mentioned organic solution, and stir evenly at room temperature. In order to speed up the dissolution process, the sealed solution can be Place the container in an oven at 45-60°C; stir evenly after the polyvinylidene fluoride is completely dissolved, and place it statically at 20-30°C for 1-3 days for degassing, or perform rapid degassing under ultrasonic conditions to obtain the casting film .

[0044] At a temperature of 25°C and a humidity of 65%, balls were made on hollow fiber membrane spinning equipment by L-S phase inversion method. Pour the prepared casting solution into the raw materia...

Embodiment 2

[0046] Take a total of 25 grams of perfluorosulfonic acid resin (ion exchange capacity of 1.75 mmol / g) and mercury acetate with a mass ratio of 7:1 and dissolve in 210 grams of solvent N-N dimethylacetamide (DMAc), and stir at 40 ° C 12 hours; then add 15 grams of pore-forming agent polyethylene glycol, get 80 grams of dried powdered polyethersulfone (PSF) and polysulfone (PS) (mass ratio 1:1) into the above organic solution, at 50 ° C In order to speed up the dissolution process, put the sealed solution container in an oven at 80°C; stir evenly after the polyvinyl chloride is completely dissolved, and place it statically at 20-30°C for 1-3 days for defoaming, or in Rapid defoaming under ultrasonic conditions to obtain casting solution.

[0047] At a temperature of 25°C and a humidity of 65%, balls were made on hollow fiber membrane spinning equipment by L-S phase inversion method. Pour the prepared casting solution into the raw material tank, let it stand for 12 hours, and d...

Embodiment 3

[0049] Take a total of 40 grams of perfluorosulfonic acid resin (ion exchange capacity of 0.8 mmol / g) and mercury acetate with a mass ratio of 10:1 and dissolve them in 245 grams of solvent N-N dimethylacetamide (DMAc), and stir at 30 ° C 12 hours; then add 5 grams of pore-forming agent polyethylene glycol, take 87 grams of dried powdered polyether ether ketone and add it to the above organic solution, and stir evenly at room temperature. In order to speed up the dissolution process, the sealed solution container can be placed In an oven at 45-60°C; after the polyether ether ketone is completely dissolved, stir evenly, and place it statically at 20-30°C for 1-3 days for degassing, or perform rapid degassing under ultrasonic conditions to obtain a casting solution.

[0050] At a temperature of 25°C and a humidity of 65%, pellets were prepared on hollow fiber membrane spinning equipment by L-S phase inversion method. Pour the prepared casting solution into the raw material tank,...

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Abstract

The invention relates to a preparation method of a heavy metal ion imprinting polymer porous small ball and a film based on sulphonic acid resin. The molecular imprinting polymer small ball and film are prepared from a casting solution by a phase inversion method, wherein the casting solution comprises a linear polymer, the sulphonic acid resin, template heavy metal ions, a pore-forming agent anda solvent. The casting solution dropwise or linearly enters a coagulating bath by oscillation of a pinhead, and forms the polymer small ball or film after coagulating and shaping. The size dimension of the ion imprinting polymer porous small ball can be controlled by controlling the extrusion pressure and oscillation frequency. The ion imprinting polymer porous small ball or film has the porous characteristic, simultaneously forms metal ion imprinting sites in the polymer and on the surface of the polymer, can be used for removing heavy metal ions or enriching and recovering noble metal in water, and can be regenerated and cyclically used after acid washing.

Description

technical field [0001] The invention belongs to the field of preparation of functional polymer materials, and in particular relates to a preparation method of heavy metal ion imprinted polymer porous beads and membranes based on sulfonic acid resin. Background technique [0002] Wastewater containing heavy metal ions discharged in various industrial production processes is difficult to treat and harmful, and it is difficult to biodegrade and highly toxic. It is well known that heavy metal ions in water can be biosorbed and enriched along the food chain, accumulate in the human body and cause poisoning. Among the eight major public hazards that shocked the world, heavy metal poisoning is one of them (Minamata disease, namely mercury poisoning and pain disease, namely cadmium poisoning in Japan, are two of the more serious cases). Heavy metal ions widely exist in industrial wastewater, mainly from mine pit drainage, non-ferrous metal smelter dedusting drainage, non-ferrous me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C08J3/16C08J9/26C08L81/06C08L71/08C08L27/16C08L27/06C08L79/08
Inventor 王学军张永明张恒董辰生
Owner SHANDONG DONGYUE POLYMER MATERIAL
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