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Preparation method for Fe and Cu bi-metal loading mesoporous carbon and alumina composite ceramic membrane material, and application of ceramic membrane material

A composite ceramic membrane and alumina carbon oxide technology, which is applied in chemical instruments and methods, special compound water treatment, oxidized water/sewage treatment, etc., can solve the problems of cumbersome operation and waste of catalyst, and achieve simplified recovery steps and improved degradation effect , cost reduction effect

Inactive Publication Date: 2018-02-06
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, in the traditional heterogeneous Fenton reaction, a series of separation steps are required after the degradation is completed, which not only wastes the catalyst, but also is cumbersome to operate

Method used

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  • Preparation method for Fe and Cu bi-metal loading mesoporous carbon and alumina composite ceramic membrane material, and application of ceramic membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, a mesoporous carbon hollow alumina ceramic membrane with an iron-copper bimetal loading rate of 3wt% is used. At pH=3, Fe:H 2 o 2 =1:10 (molar ratio) to treat ofloxacin wastewater.

[0025] (1) Pretreatment of the carrier: Cut the alumina hollow ceramic tube carrier into small sections with a length of 6 cm according to the height of the reactor (the height of the reactor ≥ 6 cm), put it in deionized water and ultrasonically clean the carrier surface for 5 minutes, and put it into Dry in an oven at 60°C for 4 hours.

[0026] (2) Synthesis of iron-copper mesoporous carbon material: 0.139g Fe(NO 3 ) 3 9H 2 O and 0.041g Cu(NO 3 ) 2 ·3H 2 O was dissolved in absolute ethanol to make Fe:Cu=2:1 (molar ratio), heated to 45°C in a water bath, and added dropwise the ethanol solution of 6g of mesoporous carbon precursor (F127 6wt%, phenolic resin 30wt%, the rest is ethanol solvent), vigorously stirred for 30min; poured into a watch glass, evaporated at roo...

Embodiment 2

[0030]This example adopts the mesoporous alumina carbon oxide ceramic film with the iron-copper bimetal loading ratio of 4wt%, at pH=5, Fe:H 2 o 2 =1:20 (molar ratio) to treat ofloxacin wastewater.

[0031] (1) Pretreatment of the carrier: Cut the alumina hollow ceramic tube carrier into small sections with a length of 6 cm according to the height of the reactor (the height of the reactor ≥ 6 cm), put it in deionized water and ultrasonically clean the carrier surface for 8 minutes, and put it in Dry in an oven at 70°C for 5 hours for later use.

[0032] (2) Synthesis of iron-copper mesoporous carbon materials: the bimetallic loading rate was added to the ethanol solution of the mesoporous carbon precursor 4wt% 0.186g Fe(NO 3 ) 3 9H 2 O and 0.054g Cu(NO 3 ) 2 ·3H 2 O was dissolved in absolute ethanol to make Fe:Cu=2:1 (molar ratio), heated to 47°C in a water bath, and the ethanol solution of 6g of mesoporous carbon precursor was added dropwise (F127 6wt%, phenolic resin ...

Embodiment 3

[0036] This example adopts the mesoporous alumina carbon oxide ceramic membrane with the iron-copper bimetal loading ratio of 5wt%, at pH=11, Fe:H 2 o 2 =1:30 (molar ratio) to treat ofloxacin wastewater.

[0037] (1) Pretreatment of the carrier: Cut the alumina hollow ceramic tube carrier into small sections with a length of 6 cm according to the height of the reactor (the height of the reactor ≥ 6 cm), put it in deionized water and ultrasonically clean the carrier surface for 10 minutes, and put it in Dry in an oven at 80°C for 6 hours for later use.

[0038] (2) Synthesis of iron-copper mesoporous carbon material: the bimetallic loading rate is added to the ethanol solution of the mesoporous carbon precursor 5wt% 0.232g Fe(NO 3 ) 3 9H 2 O and 0.068g Cu(NO 3 ) 2 ·3H 2 O was dissolved in absolute ethanol to make Fe:Cu=2:1 (molar ratio), heated to 50°C in a water bath, and added dropwise the ethanol solution of 6g of mesoporous carbon precursor (F127 6wt%, phenolic resin...

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Abstract

The invention relates to a preparation method for a Fe and Cu bi-metal loading mesoporous carbon and alumina composite ceramic membrane material, and the application of the ceramic membrane material.An aluminium oxide hollow ceramic tube is dried in a drying oven; the Fe(NO3)3.9H2O and the Cu(NO3)2.3H2O of a mesoporous carbon precursor are added to be dissolved in absolute ethyl alcohol, mixtureis heated in a water bath and dripped into the ethanol solution of the mesoporous carbon precursor; the mixture is poured into watch glass and is evaporated at a room temperature to obtain a thick Feand Cu mesoporous material; two ends of a pre-prepared aluminium oxide ceramic tube carrier are blocked, and the thick Fe and Cu mesoporous material is smeared to the outer surface of the aluminium oxide ceramic tube carrier; rotary curing is carried out to obtain an even membrane layer; the ceramic tube membrane is dried in vacuum to obtain the Fe and Cu bi-metal loading mesoporous carbon and alumina composite ceramic membrane material. The composite ceramic membrane is used for degrading an ofloxacin solution which passes through the bi-metal loading layer, degradation time is the residencetime of the ofloxacin on the ceramic membrane, and the degradation rate of the ofloxacin in short time can be 90%.

Description

technical field [0001] The invention relates to a method for preparing a catalytic separation membrane Fenton catalyst, which belongs to the technical field of high-concentration organic wastewater treatment; in particular, it relates to a method for preparing an iron-copper bimetallic loaded mesoporous alumina carbon oxide composite ceramic membrane material and its application. Background technique [0002] The rapid development of today's society has promoted the improvement, progress and development of a series of technologies such as industry and agriculture. But at the same time, it also makes human beings distressed. The development of industrial technology is not only a severe test for the environment, but also a global issue that affects human survival, safety and development. The wastewater obtained in industrial production, such as printing and dyeing wastewater, pharmaceutical wastewater, leather wastewater, etc., will produce wastewater with high concentration, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/12B01D71/02C02F1/44C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01D67/0039B01D69/12B01D71/025B01D2325/10C02F1/44C02F1/722C02F1/725C02F2101/34C02F2101/36C02F2101/38C02F2305/026
Inventor 郑春明常淑斌廉东英马超师帅马丽娜孙晓红
Owner TIANJIN POLYTECHNIC UNIV
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