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Fluorine adsorbing material, preparation method thereof, and fluorine-containing wastewater treatment method using fluorine adsorbing material

A technology for adsorbing materials and wastewater, applied in the field of fluorine adsorption, which can solve the problems of huge size and complex treatment facilities.

Pending Publication Date: 2021-09-10
伊诺化学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned device has a structure in which the wastewater is passed through a cation exchange resin to preferentially remove calcium ions in the wastewater, and there are disadvantages in that the treatment facilities are complicated and huge.

Method used

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  • Fluorine adsorbing material, preparation method thereof, and fluorine-containing wastewater treatment method using fluorine adsorbing material
  • Fluorine adsorbing material, preparation method thereof, and fluorine-containing wastewater treatment method using fluorine adsorbing material
  • Fluorine adsorbing material, preparation method thereof, and fluorine-containing wastewater treatment method using fluorine adsorbing material

Examples

Experimental program
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Effect test

preparation example Construction

[0076] The preparation method of the fluorine adsorption material of the present invention comprises: step (a-1), mixing 30% by weight to 60% by weight of cerium oxide (Cerium Oxide) and 30% by weight to 60% by weight of cerium hydroxide (Ceriumhydroxide) solvent to prepare the first slurry; step (a-2), adding 0.1% by weight to 15% by weight of aluminum oxide (Aluminium oxide) and 0.1% by weight to 15% by weight of zirconia (Zirconium oxide) to the above-mentioned first slurry ); Step (a-3), dispersing the above-mentioned first slurry; Step (a-4), mixing resin and organic solvent to prepare the second slurry; Step (a-5), mixing the above-mentioned first slurry and the second slurry to prepare a third slurry; step (a-6), dispersing the above third slurry; and step (a-7), adding the above third slurry dropwise in water to form beads.

[0077] Firstly, 30 to 60 weight percent of cerium oxide and 30 to 60 weight percent of cerium hydroxide are mixed in a solvent to prepare a first...

Embodiment 1

[0165] Embodiment 1. Preparation of fluorine adsorption material

[0166] 1) Preparation of the first slurry (Slurry): Mix 4 kg of cerium oxide and 5 kg of cerium hydroxide, and add 500 g each of alumina and zirconia to prepare a mixture. The above-mentioned mixture and dimethyl sulfoxide were mixed at a weight ratio of 1:1, filled in a vessel (Vessel), dispersed, and refined to prepare a first slurry.

[0167] 2) Preparation of the second slurry: 10% (v / v) of ethylene vinyl alcohol resin was dissolved in dimethyl sulfoxide (DMSO), followed by purification to prepare a second slurry.

[0168] 3) Mixing of the slurry: After putting the above-mentioned first slurry and the second slurry into the reactor at a weight ratio of 1:2, they were stirred with a shaker and then dispersed to prepare the third slurry.

[0169] After the third slurry is dispersed, it is refined.

[0170] 4) Preparation of beads: Water was prepared in the reactor, and the third slurry was added dropwise th...

experiment example 1

[0176] Experimental example 1: Confirmation of fluorine adsorption capacity of fluorine adsorption material

[0177] The fluorine adsorption material was prepared according to Example 1, and the content of cerium oxide and cerium hydroxide was changed to confirm the adsorption capacity of the fluororesin.

[0178] Table 1

[0179] Sample (No.) 1 2 3 4 5 6 Cerium oxide (kg) 2 3 4 5 6 7 Cerium hydroxide (kg) 7 6 5 4 3 2 Alumina (kg) 0.5 0.5 0.5 0.5 0.5 0.5 Zirconia (kg) 0.5 0.5 0.5 0.5 0.5 0.5 Fluoride ion (ppm) 4.3 2.9 2.8 2.5 2.3 2.4 Chloride ion (ppm) 790 785 783 784 785 790 nitric acid (NO 3 - )(ppm)

223 210 211 209 210 222

[0180] The prepared fluorine adsorption material was filled in a column with a diameter of 50 cm.

[0181] After the initial washing, the fluorine adsorbing material was activated by pretreatment of alkaline washing and washing with 0.3N sodium hydrox...

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Abstract

The invention relates to a fluorine adsorbing material, a preparation method thereof and a fluorine-containing wastewater treatment method using the fluorine adsorbing material. The fluorine adsorbing material according to the present invention comprises: a support body comprising 30 to 60 wt% of cerium oxide, 30 to 60 wt% of cerium hydroxide, 0.1 to 15 wt% of aluminum oxide, and 0.1 to 15 wt% of zirconium oxide; and an adsorbate resin which contains ethylene vinyl alcohol (Ethylene Vinyl Alcohol), and which is bonded to the support body.

Description

technical field [0001] The invention relates to a fluorine adsorption material, a preparation method thereof and a treatment method for fluorine-containing waste water. More specifically, the present invention relates to a fluorine adsorbing material capable of column adsorption with improved physical properties, a preparation method thereof, and a fluorine adsorption method using the same. Background technique [0002] Fluorine is used for various purposes in electronics-related industries including glass manufacturing, aluminum and iron manufacturing processes, kiln manufacturing processes, electroplating processes, and display manufacturing due to its extremely chemically reactive properties. [0003] In particular, the etching process based on chemical reaction is performed in the glass thinning process in the display manufacturing process, and in the hydrofluoric acid process used at this time, waste water containing hydrofluoric acid is generated at a high concentratio...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/28B01J20/30B01J20/34C02F1/28C02F101/14
CPCB01J20/06B01J20/28021B01J20/345C02F1/285C02F2101/14B01J20/28B01J20/30B01J20/34C02F1/28B01J20/08B01J20/32C02F1/58B01J20/28033B01J20/3297B01J20/28019B01J20/3028C02F1/288C02F1/583C02F2303/16
Inventor 郑仁李相恩李定原
Owner 伊诺化学
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