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A kind of fluoride ion surface imprinted polymer and its treatment method for fluorine-containing water

A technology of imprinting polymer and surface imprinting, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. question

Active Publication Date: 2017-08-04
QUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fluoride ion surface-imprinted polymer and its treatment method for fluorine-containing water, which solves the influence of miscellaneous ions on the removal effect during the treatment of fluoride-containing water, and produces a large amount of waste, which causes secondary pollution question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Pretreatment of orange peel cellulose: Take 10 grams of orange peel powder and 200ml of ethanol solution (80% concentration), extract it in a water bath at 80°C for 4 hours, extract the flavonoids from the mother liquor, and recycle it; add 100ml of the reaction product NaOH solution (0.1mol / L), stirred for 1 hour, separated by a centrifuge, then added 100ml of isopropanol solution (20% concentration), soaked overnight, and the soaked solution was separated by a centrifuge;

[0021] (2) Hydroxymethylation: Pour the product after the above post-pretreatment into a dry three-necked flask equipped with a mechanical stirrer and a condenser, adjust the pH value to 7 with dilute hydrochloric acid solution, and then add 1.67g mass fraction of 36% HCHO aqueous solution, hydroxymethylation reaction occurred at 25°C for 3 h;

[0022] (3) Grafting reaction: According to n (HCHO): n (acrylamide): n (thiosemicarbazide) = 1:1:1, weigh acrylamide and thiosemicarbazide and add them...

Embodiment 2

[0026] (1) Orange peel cellulose pretreatment: Take two flasks each, take 10 grams of orange peel powder and 200ml of ethanol solution (80% concentration), extract in a water bath at 80°C for 4 hours, and extract flavonoids from the mother liquor Recover and apply; add 100ml of NaOH solution (0.1mol / L) to the reaction product, stir for 1 hour, separate with a centrifuge, add 100ml of isopropanol solution (20% concentration), soak overnight, and use a centrifuge to soak the solution separation;

[0027] (2) Hydroxymethylation: Pour the product after the above post-pretreatment into a dry three-necked flask equipped with a mechanical stirrer and a condenser, adjust the pH value to 7 with dilute hydrochloric acid solution, and then add 1.67g mass fraction of 36% HCHO aqueous solution, hydroxymethylation reaction occurred at 25°C for 3 h;

[0028] (3) Grafting reaction: According to n (HCHO): n (acrylamide): n (thiosemicarbazide) = 1:1:1, weigh acrylamide and thiosemicarbazide an...

Embodiment 3

[0032](1) Orange peel cellulose pretreatment: Take two flasks each, take 10 grams of orange peel powder and 200ml of ethanol solution (80% concentration), extract in a water bath at 80°C for 4 hours, and extract flavonoids from the mother liquor Recover and apply; add 100ml of NaOH solution (0.1mol / L) to the reaction product, stir for 1 hour, separate with a centrifuge, add 100ml of isopropanol solution (20% concentration), soak overnight, and use a centrifuge to soak the solution separation;

[0033] (2) Hydroxymethylation: Pour the product after the above post-pretreatment into a dry three-necked flask equipped with a mechanical stirrer and a condenser, adjust the pH value to 7 with dilute hydrochloric acid solution, and then add 1.67g mass fraction of 36% HCHO aqueous solution, hydroxymethylation reaction occurred at 25°C for 3 h;

[0034] (3) Grafting reaction: According to n (HCHO): n (acrylamide): n (vinylimidazole) = 1:1:1, weigh acrylamide and vinylimidazole and add t...

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Abstract

The invention provides a fluoride ion surface imprinted polymer and a processing method of fluorinated water, belonging to the technical field of water treatment. The fluoride ion surface imprinted polymer is an orange peel cellulose base modifier, orange peel cellulose is taken as a substrate, and a product subjected to surface grafting modification, impregnation reaction, crosslinking closing and elution has a selective adsorption effect on fluoride ions. The fluoride ion surface imprinted polymer is applied to fluorinated wastewater treatment, and the concentration of fluoride ions in wastewater can be reduced to be below 10mg / L to reach the national fluorinated wastewater discharging standard; and the fluoride ion surface imprinted polymer can be applied to fluorinated drinking water treatment, the concentration of the fluorine ions can be reduced to be below 1mg / L to reach the national fluoride content standard of drinking water, and meanwhile, other water quality changes cannot occur. The invention has the advantages that the removal efficiency cannot be influenced by other heteroions, the selective adsorption and removal efficiency is high, and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular provides a fluoride ion surface imprinted polymer and a treatment method for fluorine-containing water thereof. Background technique [0002] Fluorine is one of the widely distributed elements in nature. Fluorine in nature is mainly in the form of fluorite (CaF 2 ), cryolite (Na 3 AlF 6 ) and fluorapatite (Ca 5 (PO 4 ) 3 F) exist. Fluorine pollution is recognized by more and more people. Fluorine pollution mainly comes from fluorine chemical industry, wet-process phosphoric acid, glass processing and manufacturing, metal processing, and semiconductor manufacturing, etc. Some industrial wastewater has a fluoride ion content as high as 1000 mg / L or more. The direct discharge of these wastewaters seriously pollutes the groundwater. Long-term drinking of high-concentration fluoride-containing water can lead to dental plaque, rickets, etc. Many people in the world are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58C02F101/14
Inventor 吕亮胡伟曾惠明王玉林吴越超周佳丽
Owner QUZHOU UNIV
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