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Method for treating pollutants in water by taking organic fluorine conjugated microporous polymer as adsorbent

A technology of conjugated micropores and adsorbents, applied in the field of water treatment, can solve problems such as limiting the breadth, and achieve the effects of simple process flow, large adsorption capacity, and good kinetic adsorption performance.

Inactive Publication Date: 2016-02-03
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, the currently reported porous materials for water treatment can only adsorb one or two of the three types of pollutants mentioned above at the same time, which greatly limits their wide application.

Method used

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  • Method for treating pollutants in water by taking organic fluorine conjugated microporous polymer as adsorbent
  • Method for treating pollutants in water by taking organic fluorine conjugated microporous polymer as adsorbent
  • Method for treating pollutants in water by taking organic fluorine conjugated microporous polymer as adsorbent

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Congo red (CR), toluene (Toluene) and lead (Pb 2+ ) ion mixed solvent as an example to illustrate that the adsorbent FCMP can simultaneously adsorb various pollutants in water. Among them, the concentration of Congo red (CR) is 10mg / L, lead (Pb 2+ ) The concentration of ions is 5mg / L, and the concentration of toluene is 01%. The specific implementation steps are as follows:

[0026] Measure 20 mL of the above mixed solution, add 10 mg FCMP, and stir at room temperature for 3 hours. After the stirring was completed, FCMP was recovered by filtration, and the filtrate was collected for testing. Gas chromatography-mass spectrometry (GC-MS) was used to detect the content change of toluene in the solution. Inductively coupled plasma spectrometer (ICP) was used to detect the content change of lead (Pb(II)) ions in the solution. Ultraviolet absorption-visible spectroscopy (UV-vis) was used to detect the content change of Congo red in water. The analysis results showed tha...

Embodiment 2

[0028] Taking vacuum pump oil, vegetable oil, chloroform, dimethyl sulfoxide and toluene as an example to illustrate that FCMP as an adsorbent can effectively absorb and remove organic solvents in water, waste oil and antibiotics in oil products. Explosive capacity. In order to provide a reference for the adsorption performance of the material, we use activated carbon as a comparison.

[0029] The specific implementation steps are as follows:

[0030] Take toluene as an example. Weigh a certain amount of FCMP, and record its mass, denoted as (M b ). It was then placed in 3 mL of toluene, and after 15 minutes, FCMP was recovered. Quickly weigh the mass of FCMP after absorbing the solvent (M a ), minus the mass of FCMP before adsorption (M b ) is the amount of solvent adsorbed by FCMP (M s ), use M s divide by M b That is, the mass ratio of adsorbed solvent to adsorbent is obtained. The calculation of the adsorption capacity of activated carbon to toluene is the same a...

Embodiment 3

[0033] Taking Congo red and methylene blue as examples to illustrate that FCMP as an adsorbent can effectively adsorb and remove organic dyes in sewage. The specific implementation steps are as follows:

[0034] Congo red (CR) aqueous solutions with initial concentrations of 100, 200, 300, 400, 500, and 600 mg / L were prepared respectively. Measure 30 mL of the above-mentioned Congo red (CR) aqueous solutions with different initial concentrations; weigh 6 parts of FCMP 5 mg, place them in the above-mentioned Congo red solutions with different initial concentrations, and stir at room temperature for 24 hours.

[0035] Prepare methylene blue (MB) aqueous solutions with initial concentrations of 50, 100, 150, 200, 250, and 300 mg / L, respectively. Measure 30 mL of the above-mentioned prepared methylene blue (MB) aqueous solutions with different initial concentrations; weigh 6 parts of FCMP5 mg, place them in the above-mentioned methylene blue (MB) solutions with different initial co...

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Abstract

The invention provides a method for treating pollutants in water by taking an organic fluorine conjugated microporous polymer as an adsorbent and belongs to the field of water treatment. The method comprises the following steps: adding the adsorbent with the concentration of 10-500mg / L into water containing pollutants for adsorbing for 0.1-24h at the room temperature, wherein the adsorbent can simultaneously or independently adsorb and remove waste oil, an organic solvent, organic dye and / or toxic heavy metal ions in the water, and is the organic fluorine conjugated microporous polymer, obtained through catalytic self-polymerization of 1,3,5-trifluoro-2,4,6-tri-alkynyl benzene, the specific surface is around 700-1000m<2> / g and the contact angle of surface water of the adsorbent is 157-167 degrees. The super-hydrophobic microporous conjugated fluorinated polymer provided by the invention has a relatively large specific surface and total hole volume, provides a more favorable condition for adsorbing pollutants in water, can adsorb the waste oil, the organic solvent, the organic dye and the heavy metal ions in the water simultaneously, and in addition, has relatively high adsorption capacity, and the method provided by the invention is simple and convenient to operate and simple in process route, and has a wide application value in the field of water treatment.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a method for treating pollutants in water by using an organic fluorine conjugated microporous polymer as an adsorbent. Background technique [0002] The water crisis is getting worse. Water pollution poses a serious threat to social ecology and human health. According to statistics, there are currently 2.6 billion people in the world who lack hygienic drinking water at home, and water-related diseases are the biggest cause of death for children under the age of five. Research predicts that by 2025, two-thirds of the world's population will not have access to safe drinking water and basic sanitation services. Therefore, how to efficiently and cost-effectively remove pollutants in water has become the primary measure for people to solve water pollution problems. As we all know, waste oil, volatile organic solvents, organic dyes and toxic heavy metal ions are the main so...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/58B01J20/26B01J20/28
Inventor 邓伟侨杨瑞霞
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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