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Reaction column filled with river-sand loaded graphene oxide/titanium dioxide (GO/TiO2) filler

A titanium dioxide and graphene technology, applied in the field of reaction columns, can solve the problems of inability to guarantee contact time, difficult to achieve solid-liquid separation, poor retention of antibiotics, etc., to achieve improved photolysis effect, avoid regeneration and secondary pollution, and good adsorption. performance and effect of photocatalytic performance

Active Publication Date: 2013-05-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, titanium dioxide has poor retention of antibiotics and cannot guarantee effective contact time
Artificially prepared titanium dioxide is usually small in size, it is difficult to achieve solid-liquid separation when it is directly applied, and it is easy to cause secondary pollution, which limits its direct application as a photolysis catalyst for antibiotics

Method used

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  • Reaction column filled with river-sand loaded graphene oxide/titanium dioxide (GO/TiO2) filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A river sand-supported graphene oxide / titanium dioxide (GO / TiO 2 ) The preparation method of filler, comprises the steps as follows:

[0039] 1. GO / TiO 2 Preparation of the composite material: 0.2 g of graphene oxide was added to 100 ml of deionized water, and 130w ultrasonic treatment was performed for 30 min to completely disperse the graphene oxide to obtain a graphene oxide suspension. Add 1.0g NaOH solid to the graphene oxide suspension, stir until NaOH is dissolved, then slowly add 0.02mol / L TiCl while stirring continuously 4 Until no precipitation occurs, TiCl 4 The volume ratio of the solution to the graphene oxide suspension was 1:3, and then centrifuged at 3500rpm / min for 15min, the precipitate was taken, and dried at 105°C for 5h to obtain graphene oxide / titanium dioxide (GO / TiO 2 ) composite materials;

[0040] 2. The prepared GO / TiO 2 The composite material was added into deionized water and ultrasonically treated at 130w for 30min to prepare GO / TiO 2...

Embodiment 2

[0046] A river sand-supported graphene oxide / titanium dioxide (GO / TiO 2 ) The preparation method of filler, comprises the steps as follows:

[0047] 1. GO / TiO 2 Preparation of the composite material: 0.3 g of graphene oxide was added to 100 ml of deionized water, and ultrasonically treated at 140 w for 20 min to completely disperse the graphene oxide to obtain a graphene oxide suspension. Add 1.0g NaOH solid to the graphene oxide suspension, stir until NaOH dissolves, then slowly add 0.03mol / L TiCl while stirring continuously 4 Until no precipitation occurs, TiCl 4 The volume ratio of the solution to the graphene oxide suspension was 1:3, and then centrifuged at 3500rpm / min for 15min, the precipitate was taken, and dried at 105°C for 5h to obtain graphene oxide / titanium dioxide (GO / TiO 2 ) composite materials;

[0048] 2. The prepared GO / TiO 2 The composite material was added into deionized water and ultrasonically treated at 140w for 20min to prepare GO / TiO 2 The aqueou...

Embodiment 3

[0054] A river sand-supported graphene oxide / titanium dioxide (GO / TiO 2 ) The preparation method of filler, comprises the steps as follows:

[0055] 1. GO / TiO 2 Preparation of the composite material: 0.3 g of graphene oxide was added to 100 ml of deionized water, and 120 w ultrasonic treatment was performed for 30 min to completely disperse the graphene oxide to obtain a graphene oxide suspension. Add 2.0g NaOH solid to the graphene oxide suspension, stir until NaOH is dissolved, then slowly add 0.02mol / L TiCl while stirring continuously 4 Until no precipitation occurs, TiCl 4 The volume ratio of the solution to the graphene oxide suspension was 1:2, and then centrifuged at 3500rpm / min for 15min, the precipitate was taken, and dried at 105°C for 5h to obtain graphene oxide / titanium dioxide (GO / TiO 2 ) composite materials;

[0056] 2. The prepared GO / TiO 2 The composite material was added into deionized water and ultrasonically treated at 120w for 40min to prepare GO / TiO ...

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Abstract

The invention relates to a reaction column filled with a river-sand loaded graphene oxide / titanium dioxide (GO / TiO2) filler. The reaction column comprises a transparent cylindrical column body; the column body is filled with the river-sand loaded GO / TiO2 filler; the upper end opening and the lower end opening of the column body are provided with end covers for sealing the two end openings; the end cover on the lower end of the column body is connected with a water inlet and communicated with the interior of the column body; and the end cover on the lower end of the column body is connected with a water outlet and communicated with the interior of the column body. Due to the adoption of the reaction column, ntibiotic substances can be removed fundamentally, and the regeneration and the secondary pollution of an adsorbent can be avoided. The GO / TiO2 composite material is loaded on river sand, thus the density of the filler in the reaction column is increased, the secondary pollution caused to water due to the loss of GO and TiO2 along with the flowing of water is prevented.

Description

technical field [0001] The invention relates to a river sand-loaded graphene oxide / titanium dioxide (GO / TiO 2 ) packing reaction column, which belongs to the technical field of sewage treatment. Background technique [0002] Antibiotics, as a new type of trace pollutants that are widely used and have potential physiological effects, have attracted widespread attention from the scientific community and society in recent years. Due to the strong polarity and low volatility of such antibiotic substances, they are prevented from escaping from the water body environment. In addition, when human activities are continuously input, antibiotics in the environment are in a state of "continuous existence", which seriously threatens the balance of aquatic ecology and endangers human beings. healthy. Therefore, the task of using effective methods and materials to remove antibiotic substances in water is becoming more and more urgent. [0003] Graphene oxide is the product of graphite ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01J21/18C02F1/28C02F1/30
Inventor 王曙光宋超孙雪菲
Owner SHANDONG UNIV
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