Preparation of graphene-slag-based conducting functional composite material and application of graphene-slag-based conducting functional composite material in sewage treatment

A functional composite material, graphene technology, applied in the field of preparation of graphene-slag-based conductive functional composite materials, can solve problems such as the preparation method of graphene-slag-based conductive functional composite materials has not been found

Inactive Publication Date: 2015-05-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The applicant has carefully checked a large number of domestic and foreign documents and patents, and has not found any reports...

Method used

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  • Preparation of graphene-slag-based conducting functional composite material and application of graphene-slag-based conducting functional composite material in sewage treatment
  • Preparation of graphene-slag-based conducting functional composite material and application of graphene-slag-based conducting functional composite material in sewage treatment
  • Preparation of graphene-slag-based conducting functional composite material and application of graphene-slag-based conducting functional composite material in sewage treatment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Accurately take by weighing 1500g of the granulated blast furnace slag powder raw material, take this as the measurement basis (100%), adopt the external mixing method, the graphene dosage is 0.01% of the granulated blast furnace slag powder weight, and the dosage of solid sodium hydroxide is granulated The mass ratio of water to granulated blast furnace slag powder is 0.28. Pour the granulated blast furnace slag powder and graphene into a double-rotation and double-speed slurry mixer, and stir evenly; dissolve solid sodium hydroxide in water to prepare an aqueous sodium hydroxide solution. Add the sodium hydroxide aqueous solution to the uniformly stirred material, and form a uniformly mixed slurry after chemical reaction under high-speed stirring;

[0062] Put the slurry into a triple mold of 40mm×40mm×160mm, and vibrate it on the mortar vibrating table; put the formed test block into the standard curing box for 1 day and then remove the mold. After curing for 2 days...

Embodiment 2

[0064] All operation steps are identical with embodiment 1, just change the quality of graphene into 0.02% of granulated blast furnace slag powder quality, obtain graphene-slag-based conductive function composite material test block mark as: GE / GBFS2), detect test block 3d compressive and flexural strength, the strength data are shown in Table 2.

Embodiment 3

[0066] Under the premise of not adding graphene, all operation steps are the same as embodiment 1, obtain the graphene-slag-based conductive functional composite material test block (marked as: GBFS), detect the compressive and flexural strength of test block 3d, its strength The data are shown in Table 2.

[0067] Table 2: Compressive and flexural strength of test block 3d

[0068]

[0069] Proved by the applicant's experiments, the graphene-slag-based conductive functional composite material prepared by the present invention can be applied to the sewage treatment of organic dyes, specifically according to the following steps:

[0070] (1) Prepare a certain volume of basic violet 5BN simulated industrial wastewater with a volumetric flask; measure its initial absorbance A with an ultraviolet-visible light spectrophotometer o ;

[0071] (2) Put a certain amount of graphene-slag-based conductive functional composite material into a beaker of basic violet 5BN simulating ind...

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Abstract

The invention discloses a preparation method of a graphene-slag-based conducting functional composite material and application of the graphene-slag-based conducting functional composite material in sewage treatment. Graphene is compounded with blast-furnace slag powder; a granulated blast-furnace slag gel material base body is prepared; and the two-dimensional graphene is overlapped in three-dimensional porous granulated blast-furnace slag gel material base body to form a conducting functional material with the communicated graphene. The preparation method comprises the following steps: with the graphene and industrial solid waste granulated blast-furnace slag powder as raw materials, carrying out chemical reaction together with a sodium hydroxide solution in a stirring device to form slurry; and molding and maintaining to obtain the graphene-slag-based conducting functional composite material. When the graphene-slag-based conducting functional composite material is applied to simulation of industrial wastewater degradation employing basic purple 5BN, the optimal degradation rate can reach 91.16%; an overall preparation technology and application equipment are simple, and free of emission of exhaust gas, liquid waste or solid waste; and the green large-scale production can be reached.

Description

technical field [0001] The invention belongs to the field of high value-added utilization of solid waste and catalyst preparation, and specifically relates to a preparation method of a graphene-slag-based conductive functional composite material and its application in sewage treatment. Background technique [0002] Granulated blast furnace slag is a kind of waste slag discharged from the blast furnace when smelting pig iron. In blast furnace ironmaking, in addition to adding iron ore, fuel and other raw materials into the blast furnace, a considerable amount of lime needs to be added as a flux and slagging agent. When the temperature in the furnace reaches 1400°C-1600°C, the iron ore and the flux react at high temperature, and are quenched by air or water to form granulated blast furnace slag. According to statistics, the blast furnace slag produced in the ironmaking production process is 33% to 35%. In the first three years of the "Twelfth Five-Year Plan", the total produc...

Claims

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Application Information

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IPC IPC(8): B01J27/185C02F1/30C02F1/32
CPCY02W10/37
Inventor 张耀君杨梦阳康乐张力张科柴倩
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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