Multifunctional material PANI-CMC-Fe3O4 and application of multifunctional material PANI-CMC-Fe3O4 to treatment of printing and dyeing wastewater

A pani-cmc-fe3o4, multi-functional technology, applied in the preparation and application of multi-functional water treatment materials, can solve the problems of limited application, and achieve the effect of mild reaction conditions and good adsorption performance

Inactive Publication Date: 2016-05-11
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon nanotubes and nano-Fe 3 o 4 The price limits its application in industrial water treatment

Method used

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  • Multifunctional material PANI-CMC-Fe3O4 and application of multifunctional material PANI-CMC-Fe3O4 to treatment of printing and dyeing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In the citric acid-sodium citrate buffer solution with pH=4.00, add 0.500g of CMC, after it forms a uniform dispersion system, add 0.2g, 0.5g and 0.8g of self-made magnetic Fe 3 o 4 , and mix well. Afterwards, 1 mL of purified aniline and 1 mL of 10 mg / L Hemin were added to the reaction system, and mixed uniformly. Place each reaction system at 25°C and react on a 150r / min shaker, and add 0.2mL of 30% H to each system every 15min 2 o 2 , a total of 7 times. Last join H 2 o 2 Afterwards, let it react for 0.5 h, add 25 mL of 37% HCl to the reaction system, maintain the shaking reaction for 0.5 h, and let it stand for 16 h. After the reaction is finished, the product is washed successively with deionized water and absolute ethanol, and the product obtained by centrifugation is dried at 60° C. and ground for later use. The products obtained are marked as A, B and C, and the product masses are 1.5041g, 1.5816g and 1.7248g in turn.

[0020] At the same time, using the...

Embodiment 2

[0025] Using 20mg / L anionic dye methyl orange solution as a simulated printing and dyeing wastewater, the static adsorption effect of different dosages of multifunctional materials was evaluated under the conditions of 25°C and 150r / min.

[0026] For the material A prepared in Example 1, carry out the adsorption reaction according to the dosage of 0.05, 0.10, 0.20, 0.30, 0.40 and 0.50g / L respectively, take samples respectively after 60min, measure its absorbance at 464nm, and calculate the removal rate, They are 17.38%, 35.82%, 55.49%, 70.05%, 78.81% and 82.85%, respectively.

[0027] The results showed that the prepared multifunctional material PANI-CMC-Fe 3 o 4 Shows good adsorption properties for dyes.

Embodiment 3

[0029] Using 20mg / L anionic dye methyl orange solution as the simulated printing and dyeing wastewater, the static adsorption effect of multifunctional materials was evaluated under the conditions of 25°C and 150r / min.

[0030] For the materials B, D, E, and F prepared in Example 1, the dosage of 0.5g / L was used, and when the adsorption time was 10min, 30min, and 60min, respectively, samples were taken to measure their absorbance at 464nm, and the different materials at different times were calculated. The removal rate of the dye.

[0031] The removal rate of sample F (pure PANI) reached 62.29%, 74.40% and 85.56% at 10 min, 30 min and 60 min, respectively.

[0032] The removal rate of sample E (PANI-CMC) reached 84.14%, 90.07% and 93.87% at 10min, 30min and 60min, respectively.

[0033] Sample D (PANI-Fe3 o 4 ) at 10min, 30min and 60min, the removal rate reached 57.15%, 66.35% and 86.57% decolorization rate respectively.

[0034] Sample B (PANI-CMC-Fe 3 o 4 ) at 10min, 30...

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Abstract

The invention discloses a multifunctional material PANI-CMC-Fe3O4 and an application of the multifunctional material PANI-CMC-Fe3O4 to treatment of printing and dyeing wastewater. A preparing method of the multifunctional material PANI-CMC-Fe3O4 includes the following steps that in a buffer system, aniline, hemin, CMC and magnetic Fe3O4 are added in proportion and evenly dispersed; under the condition that the mixture is continually stirred at the temperature of 15-45 DEG C, a certain amount of H2O2 is added into the system every 15-20 min; the mixture is continuously reacted for 0.5 h or longer, a certain amount of hydrochloric acid is added into the system, the mixture is sealed, continuously reacted and subjected to standing, the product is washed with water and ethyl alcohol, dried and ground, and then the powder-shaped product is obtained. The multifunctional material has the good adsorption performance, the good catalytic degradation performance and the good magnetic separation performance, and can be used as a good adsorbing agent, and organic matter such as dye can be catalyzed and oxidized by adding hydrogen peroxide under the wider original pH condition while adsorbing.

Description

technical field [0001] The invention relates to the technical field of preparation and application of multifunctional water treatment materials, in particular to a multifunctional material PANI-CMC-Fe which can be used to treat dye wastewater 3 o 4 preparation and its application. Background technique [0002] Dye wastewater has complex components, high concentration, and high toxicity. Most of the dyes lost to the environment are refractory substances, and many dyes are highly toxic. Therefore, the treatment of dye wastewater is of great significance to protect the environment. [0003] Polyaniline (PANI) has a unique proton acid doping-dedoping performance, and has good chemical stability. The PANI-CMC composite prepared by the applicant using carboxymethylcellulose (CMC) derived from plant cellulose in the early stage showed good adsorption and removal performance for anionic and cationic dyes in water, and could be used in a wide range of pH The value range (3-11) ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/72B01J31/28
CPCB01J20/26B01J31/28B01J35/0033C02F1/285C02F1/722C02F1/725C02F2101/308
Inventor 谢慧芳严梅张青曲虹霞孔金明
Owner NANJING UNIV OF SCI & TECH
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