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Nano-adsorbent for chemical waste liquid treatment and preparing method thereof

A nano-adsorption and waste liquid treatment technology, applied in chemical instruments and methods, textile industry wastewater treatment, inorganic chemistry, etc., can solve the problems of expensive adsorbent, low adsorption efficiency, poor stability, etc., to achieve rich adsorption sites, Improved adsorption capacity and good stability

Active Publication Date: 2017-10-24
益阳医学高等专科学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a nano-adsorbent for chemical waste liquid treatment and its preparation method. The adsorbent prepared by the method of the present invention solves the problem of expensive and stable adsorbent in the prior art The problems of poor performance, low adsorption efficiency, difficult regeneration and poor regeneration effect provide prospects for industrial application

Method used

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  • Nano-adsorbent for chemical waste liquid treatment and preparing method thereof
  • Nano-adsorbent for chemical waste liquid treatment and preparing method thereof
  • Nano-adsorbent for chemical waste liquid treatment and preparing method thereof

Examples

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Effect test

Embodiment 1

[0024] A method for preparing a nano-adsorbent for chemical waste liquid treatment, comprising the steps of:

[0025] (1) Pretreatment of styrene-divinylbenzene ion exchange resin: at a temperature of 30°C, wash the styrene-divinylbenzene ion exchange resin with ethanol for 4 hours, and then wash it with 1mol / L hydrochloric acid for 4 hours. Finally, wash with deionized water until neutral and dry for later use;

[0026] (2) Under constant stirring, add 6 g of styrene-divinylbenzene ion exchange resin and 0.8 g of dopamine pretreated in step (1) into 300 mL of Tris-HCl buffer solution, stir and react for 24 hours, then wash and dry Obtain the product that takes styrene-divinylbenzene ion exchange resin as the skeleton and cross-linked polydopamine;

[0027] (3) Stir and mix the product obtained in step (2) with 1.5g chitosan and 0.8g 1.5mol / L ferric chloride solution at 30°C for 8 hours under nitrogen gas, then filter and wash to obtain the product ;

[0028] (4) Add ammoni...

Embodiment 2

[0030] A method for preparing a nano-adsorbent for chemical waste liquid treatment, comprising the steps of:

[0031] (1) Pretreatment of styrene-divinylbenzene ion exchange resin: at a temperature of 25°C, wash the styrene-divinylbenzene ion exchange resin with ethanol for 6 hours, and then wash it with 1mol / L hydrochloric acid for 3 hours. Finally, wash with deionized water until neutral and dry for later use;

[0032] (2) Under constant stirring, add 5 g of styrene-divinylbenzene ion exchange resin and 1 g of dopamine pretreated in step (1) into 300 mL of Tris-HCl buffer solution, stir and react for 18 hours, then wash and dry to obtain A product based on styrene-divinylbenzene ion exchange resin and cross-linked polydopamine;

[0033] (3) Stir and mix the product obtained in step (2) with 2 g of chitosan and 0.6 g of 1 mol / L ferric nitrate solution at a temperature of 35° C. for 10 h under nitrogen, then filter and wash to obtain the product;

[0034] (4) Add ammonia wat...

Embodiment 3

[0036] A method for preparing a nano-adsorbent for chemical waste liquid treatment, comprising the steps of:

[0037] (1) Pretreatment of styrene-divinylbenzene ion exchange resin: at a temperature of 20°C, wash the styrene-divinylbenzene ion exchange resin with ethanol for 8 hours, and then wash it with 1mol / L hydrochloric acid for 3 hours. Finally, wash with deionized water until neutral and dry for later use;

[0038] (2) Under constant stirring, add 8 g of styrene-divinylbenzene ion exchange resin and 1.5 g of dopamine pretreated in step (1) into 350 mL of Tris-HCl buffer solution, stir and react for 24 hours, then wash and dry Obtain the product that takes styrene-divinylbenzene ion exchange resin as the skeleton and cross-linked polydopamine;

[0039] (3) Stir and mix the product obtained in step (2) with 3 g of chitosan and 1 g of 1 mol / L nickel chloride solution at 30° C. for 12 h under argon gas, then filter and wash to obtain the product;

[0040] (4) Add ammonia w...

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Abstract

The invention provides a preparing method of a nano-adsorbent for chemical waste liquid treatment. The method specifically includes the steps of firstly, preprocessing styrene-divinylbenzene ion exchange resin; secondly, preparing a crosslinking product of styrene-divinylbenzene ion exchange resin and polydopamine; thirdly, loading nanometer metal oxide. By means of the adsorbent, on one hand, a styrene-divinylbenzene ion exchange resin framework has small nanometer aperture and high specific surface area and provides bountiful adsorption sites; on the other hand, polydopamine is crosslinked on the surface of the framework and in the framework, and the adsorption performance is further improved; finally, the nano-adsorbent quite excellent in performance is obtained by loading nanometer oxide, and the adsorbent has quite excellent performance in dye waste solutions, heavy-metal-containing waste solutions, phosphorus waste solutions, arsenic waste solutions and antimony waste solutions.

Description

technical field [0001] The invention belongs to the technical field of adsorbents, and in particular relates to a nano-adsorbent for chemical waste liquid treatment and a preparation method thereof. Background technique [0002] With the development of the economy, there are more and more chemical plants around the country, and the treatment of chemical waste liquid has become a hot spot of concern from all walks of life. Traditional electroplating, leather, metal surface treatment, printing and dyeing, petrochemical and waste liquid discharges containing other organic pollutants The amount is increasing day by day. [0003] Dyestuff is a common type of pollutant in wastewater, mainly from the production process of textile, leather, paper, rubber, plastic, cosmetics, pharmaceutical and food industries. While the extensive use of dyes promotes economic development, it also produces a large amount of dye wastewater discharged into environmental water bodies, resulting in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30C02F103/30
CPCB01J20/264B01J20/28064B01J20/28083C02F1/285C02F2101/20C02F2101/308C02F2103/30
Inventor 曾明慧李军罗孟君刘畅
Owner 益阳医学高等专科学校
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