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Transition metal chlorophyll derivative fenton-like reaction reagent and application thereof

A Fenton reaction and transition metal technology, applied in the field of environmental water pollution treatment, can solve the problems of low degradation efficiency of organic pollutants, narrow pH range, etc., and achieve the effects of saving pharmaceutical costs, promoting circulation, and reducing the generation of precipitation

Active Publication Date: 2018-08-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above defects or improvement needs of the prior art, the present invention provides a transition metal chlorophyll derivative-like Fenton reaction reagent and its application in degrading organic pollutants, the purpose of which is to use transition metal chlorophyll derivatives as Fenton-like reagents, together with traditional Fenton-like or Fenton-like oxidants, act on organic pollutants, and achieve high-efficiency removal of various refractory organic pollutants in a wide pH range by generating high-valent metal-oxygen complexes as active intermediates. Degradation, thereby solving the technical problems of low degradation efficiency and narrow suitable pH range of Fenton-like reagents in the prior art

Method used

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  • Transition metal chlorophyll derivative fenton-like reaction reagent and application thereof
  • Transition metal chlorophyll derivative fenton-like reaction reagent and application thereof
  • Transition metal chlorophyll derivative fenton-like reaction reagent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) The transition metal chlorophyll derivative (TMCD) whose configuration concentration is 2mM has a structural formula as shown in formula (1), wherein the metal ion M is a ferrous ion; the substituent R 1 for CH 3 -; R 2 , R 3 and R 4 All are Na ions) stock solution, the solution is alkaline now.

[0048] (2) Weigh 0.0456g of bisphenol A and dissolve it in 1L of water to obtain a bisphenol A stock solution with a concentration of 0.2mM. with KMnO 4 Titration for 30% H 2 o 2 After diluting a certain number of times, the concentration of 400mM H 2 o 2 stock solution;

[0049] (3) Add 40mL of bisphenol A stock solution, 4.8mL of TMCD stock solution, and 33.2mL of water into a 250mL Erlenmeyer flask, adjust to different pH, and finally add H 2 o 2 Stock solution 1mL starts to react, and TMCD in reaction solution at this moment: Pollutant: H 2 o 2 The molar ratio is 1.2:1:50.

[0050] (4) Sampling 3mL at regular intervals, measuring the concentration of bisp...

Embodiment 2

[0052] (1) The transition metal chlorophyll derivative (TMCD) whose configuration concentration is 2mM has a structural formula as shown in formula (1), wherein the metal ion M is a ferrous ion; the substituent R 1 for CH 3 -; R 2 , R 3 and R 4 All are Na ions) stock solution, the solution is alkaline now.

[0053] (2) Weigh 0.0456g of bisphenol A and dissolve it in 1L of water to obtain a bisphenol A stock solution with a concentration of 0.2mM. with KMnO 4 Titration for 30% H 2 o 2 After diluting a certain number of times, the concentration of 400mM H 2 o 2 stock solution;

[0054] (3) Add 40 mL of bisphenol A stock solution, a certain volume of TMCD stock solution and water into a 250 mL Erlenmeyer flask, adjust the pH=7 of the solution, and finally add H 2 o 2 Stock solution 1mL starts to react, and pollutant in reaction solution at this moment: H 2 o 2 The molar ratio is 1:50.

[0055] (4) Sampling 3mL at regular intervals, measuring the concentration of bis...

Embodiment 3

[0057] (1) transition metal chlorophyll derivative (TMCD) whose configuration concentration is 2mM, its structural formula is shown in formula (two), wherein metal ion M is ferrous ion; Substituent R 1 for CHO-; R 2 , R 3 and R 4 Both are K ion) stock solution, the Fe(II)-EDTA stock solution with a concentration of 2mM and the Fe(II) stock solution with a concentration of 2mM.

[0058] (2) Weigh 0.0456g of bisphenol A and dissolve it in 1L of water to obtain a bisphenol A stock solution with a concentration of 0.2mM. with KMnO 4 Titration for 30% H 2 o 2 After diluting a certain number of times, the concentration of 400mM H 2 o 2 stock solution;

[0059] (3) Add bisphenol A stock solution 40mL in the Erlenmeyer flask of 250mL, TMCD stock solution / Fe(II)-EDTA stock solution / Fe(II) stock solution 4.8mL, add water 33.2mL, adjust the pH of solution= 9.0 / 7.0 / 2.7, add H at the end 2 o 2 Stock solution 1mL starts reaction, and TMCD / Fe(II)-EDTA / Fe(II) in reaction solution t...

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Abstract

The invention discloses a fenton-like reagent for degrading organic pollutants and application of the fenton-like reagent, applies a water-soluble transition metal chlorophyll derivative (TMCD) to thefenton-like reaction for degrading pollutants and belongs to the field of water pollution treatment. The TMCD can be reacted with various oxidants in an aqueous solution, and the fenton-like reagentcan efficiently degrade various persistent pollutants without the illumination condition and has good degradation effect in a range that a pH value is greater than 3. By using a method provided by theinvention, various refractory pollutants can be rapidly and efficiently degraded, and the effect is obviously superior to the effect of the existing fenton and fenton-like water treatment technologies.

Description

technical field [0001] The invention belongs to the field of environmental water pollution treatment, and more specifically relates to a transition metal chlorophyll derivative-like Fenton reaction reagent and its application in degrading organic pollutants. Background technique [0002] With the rapid development of printing and dyeing, pharmaceutical, chemical and other industries and the extensive use of pesticides in agriculture, the discharge of various refractory organic wastewater is increasing day by day. These refractory pollutants have accumulated in soil and water for a long time, and some even have carcinogenic, teratogenic and mutagenic effects, which have caused a great impact on the ecological environment and human health. [0003] These pesticides, drugs, dyes and other organic pollutants have extremely high chemical stability and poor biodegradability, making it difficult to remove them by traditional biological treatment methods. Therefore, it is necessary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/30
CPCC02F1/722C02F2101/30C02F2305/023C02F2305/026
Inventor 胡敬平张鹏潘可亮杨小容赵晓娜李星吾陈思静侯慧杰刘冰川杨家宽
Owner HUAZHONG UNIV OF SCI & TECH
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