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Degradation method of organic pollutants

A technology of organic pollutants and nickel hydroxide, applied in water pollutants, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as high toxicity, limited popularization and application, and no activation of PS, and achieve stable properties, High degradation efficiency, beneficial to industrial application

Inactive Publication Date: 2018-07-24
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research reports have shown that Co 2+ It is currently the best catalyst to activate PMS, but it has no activation effect on PS, and Co 2+ Very toxic, which greatly limits its popularization and application

Method used

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  • Degradation method of organic pollutants
  • Degradation method of organic pollutants
  • Degradation method of organic pollutants

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1. Preparation of nickel hydroxide: Ni(NO 3 ) 2 ·6H 2 O and urea were dissolved in a mixed solution of water and ethylene glycol, stirred and mixed evenly, then transferred to a hydrothermal kettle, placed in an oven at 120°C for 4 hours, and after the reaction kettle was cooled to room temperature, the obtained product was watered Alternately washing with ethanol and centrifuging for three times, finally vacuum drying and grinding to obtain nickel hydroxide.

[0041] Ni(NO 3 ) 2 ·6H 2 The molar ratio of O to urea is 1:4.

[0042] The volume ratio of water and ethylene glycol described in step 1 is 1:1.

[0043] Ni(NO 3 ) 2 ·6H 2 The concentration of O in the mixed solution of water and ethylene glycol is 0.06mol / L and the concentration of urea in the mixed solution of water and ethylene glycol is 0.25mol / L.

[0044] Nickel hydroxide as described in step 1, such as figure 1 As shown, its XRD peak completely corresponds to the Jade spectrum of standard α-phase...

Embodiment 2

[0057] 1. Preparation of nickel hydroxide: Ni(NO 3 ) 2 ·6H 2 O and urea were dissolved in a mixed solution of water and ethylene glycol, stirred and mixed evenly, then transferred to a hydrothermal kettle, placed in an oven at 120°C for 4 hours, and after the reaction kettle was cooled to room temperature, the obtained product was watered Alternately washing with ethanol and centrifuging for three times, finally vacuum drying and grinding to obtain nickel hydroxide.

[0058] Ni(NO 3 ) 2 ·6H 2 The molar ratio of O to urea is 1:3.

[0059] The volume ratio of water and ethylene glycol described in step 1 is 1:0.5.

[0060] Ni(NO 3 ) 2 ·6H 2 The concentration of O in the mixed solution of water and ethylene glycol is 0.04mol / L and the concentration of urea in the mixed solution of water and ethylene glycol is 0.20mol / L.

[0061] 2. Put the prepared nickel hydroxide into a solution containing refractory organic pollutants such as phenol, and at the same time, put a certa...

Embodiment 3

[0072] 1. Preparation of nickel hydroxide: Ni(NO 3 ) 2 ·6H 2 O and urea were dissolved in a mixed solution of water and ethylene glycol, stirred and mixed evenly, then transferred to a hydrothermal kettle, placed in an oven at 120°C for 4 hours, and after the reaction kettle was cooled to room temperature, the obtained product was watered Alternately washing with ethanol and centrifuging for three times, finally vacuum drying and grinding to obtain nickel hydroxide.

[0073] Ni(NO 3 ) 2 ·6H 2 The molar ratio of O to urea is 1:5.

[0074] The volume ratio of water and ethylene glycol described in step 1 is 1:1.5.

[0075] Ni(NO 3 ) 2 ·6H 2 The concentration of O in the mixed solution of water and ethylene glycol is 0.08mol / L and the concentration of urea in the mixed solution of water and ethylene glycol is 0.30mol / L.

[0076] 2. Put the prepared nickel hydroxide into a solution containing refractory organic pollutants such as phenol, and at the same time, put a certa...

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Abstract

The invention provides a degradation method of organic pollutants. The degradation method comprises following steps: nickel hydroxide nanometer sheets are prepared; the nickel hydroxide nanometer sheets are added into a solution containing organic pollutants, a persulfate is added, and stirring is carried out for degradation so as to realize mineralization of the organic pollutants. A preparationmethod of the nickel hydroxide nanometer sheets comprises following steps: a water soluble nickel salt and urea are dissolved in a mixed solution of water and glycol, an obtained mixture is mixed to be uniform, and is subjected to hydro-thermal reaction at 120 DEG C, and washing and drying are carried out so as to obtain the nickel hydroxide nanometer sheets. Compared with the prior art, the degradation method possesses following beneficial effects: 1, the adopted nickel hydroxide is of a nanometer sheet shaped structure, so that it is beneficial for combination of the catalyst with pollutantsand PS, and the loss of Ni metal can be inhibited effectively; and 2, the preparation method of nickel hydroxide nanometer sheets is simple and convenient.

Description

technical field [0001] The invention relates to a method for degrading organic pollutants, belonging to the field of water treatment technology applications. Background technique [0002] Environmental pollution caused by refractory organics is increasingly becoming a challenging multidisciplinary problem as new chemicals are continuously introduced into the environment. Especially emerging pollutants, such as emerging drugs and their metabolites, endocrine disruptors, disinfection by-products, and personal care products, can easily cause water pollution and often cause serious ecological damage. Most of these pollutants are toxic and difficult to remove by biotechnology. Therefore, advanced oxidation technology has become a research hotspot in the treatment of such pollutants because of its excellent chemical oxidation performance. [0003] The advanced oxidation technology based on sulfate radical has attracted more and more attention and has become an effective method t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/30
CPCC02F1/725C02F2101/30
Inventor 赵一新钱旭芳岳东亭郭超严璇任孟阚淼方梦媛
Owner SHANGHAI JIAO TONG UNIV
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