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A kind of preparation of alumina/carbon nanocomposite material using alkali residue wastewater and aluminum-containing waste acid

A composite material and alkali slag wastewater technology, which is applied in the fields of aluminum hydroxide preparation, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of high cost, untreated acid radicals, difficulty in industrialization, etc., and achieve good adsorption effect of ability

Active Publication Date: 2017-07-18
纽博恩(佛山)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to investigate pH, reaction temperature, water bath temperature, etc., and also needs to add a large amount of sodium bicarbonate, which is difficult for industrialization and high in cost, and the acid radicals have not been cleaned.

Method used

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  • A kind of preparation of alumina/carbon nanocomposite material using alkali residue wastewater and aluminum-containing waste acid
  • A kind of preparation of alumina/carbon nanocomposite material using alkali residue wastewater and aluminum-containing waste acid
  • A kind of preparation of alumina/carbon nanocomposite material using alkali residue wastewater and aluminum-containing waste acid

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Effect test

Embodiment 1

[0020] Embodiment 1. A method for preparing alumina / carbon nanocomposites by using alkali slag wastewater and aluminum-containing waste acid, the method comprises the following steps: (1) Take a certain amount of alkali slag wastewater, filter it with a filter screen, remove For solid impurities, the measured pH value is 13-14; gradually add aluminum-containing waste acid solution to the alkali slag wastewater until precipitation occurs, and when the pH value of the obtained solid-liquid mixture is 6-8, use it for later use; (2) Dry the solid-liquid mixture obtained in step (1) at 60-100°C for more than 24 hours to obtain a dried composite material precursor, take it out and grind it for later use; (3) dry the composite material precursor obtained in step (2) The body is calcined at 400-800°C for 2-4h in a nitrogen or argon atmosphere, the heating rate is 5-15°C / min, and the composite material can be obtained after cooling to room temperature. The obtained composite material i...

Embodiment 2

[0022] Embodiment 2, the method for preparing alumina / carbon nanocomposites by using alkali slag waste water and aluminum-containing waste acid, comprises the following steps

[0023] (1) Take 150ml of alkali slag wastewater from the oil refinery of Dushanzi Petrochemical Plant and filter it with a filter. As for the conical flask, the pH range is about 13-14. Take another 50-100ml of aluminum-containing waste acid solution, add the aluminum-containing waste acid solution drop by drop, shake the Erlenmeyer flask while adding dropwise, until precipitation occurs and does not dissolve within 5 seconds, and the pH value of the solution is about 6-8;

[0024] (2) Dry the solid-liquid mixture obtained in step (1) at 60-100°C for more than 24 hours to obtain a dried composite material precursor. The appearance color of the sample is earthy yellow. After taking it out, use a pulverizer to crush it to 100 mesh Left and right, the appearance color of the sample is khaki;

[0025] (3) ...

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Abstract

The invention belongs to the technical field of environment-friendly use of wastewater, and in particular relates to a method for preparing an aluminum oxide / carbon nano composite material from alkali slag wastewater and aluminum-containing waste acid. The method comprises the following steps: (1) filtering a certain amount of alkali slag wastewater by using a filtering net, removing solid impurities, testing the pH value to be 13-14, and adding an aluminum-containing waste acid liquid into the alkali slag wastewater for precipitation; (2) drying a solid-liquid mixed liquid for more than or equal to 24 hours at 60-100 DEG C so as to obtain a dried composite material precursor, and grinding; (3) roasting the dried composite material precursor in the presence of nitrogen or argon at 400-800 DEG C at a heating velocity of 5-15 DEG C / minute, and cooling to the room temperature so as to obtain a composite material; (4) filtering and washing the composite material with water, or performing centrifugal washing so as to obtain solid, and naturally drying, thereby obtaining a product of the aluminum oxide / carbon nano composite material. By adopting the method provided by the invention, a waste liquid can be treated, and an aluminum oxide / carbon composite material which is relatively good in adsorption property for metal ions and can be applied to heavy metal wastewater treatment can be prepared.

Description

technical field [0001] The invention belongs to the technical field of waste water environmental protection utilization, and in particular relates to a method for preparing alumina / carbon nanocomposite materials by using alkali slag waste water and aluminum-containing waste acid. Background technique [0002] Alumina / carbon composites have many excellent properties. For example: alumina / carbon composite material has high hardness, high strength, acidic centers and basic centers on the surface, porosity, large specific surface area, good adsorption and other properties, and is a very important inorganic material. It is widely used in catalysis, water treatment, ceramic materials, composite material reinforcements, biomedical materials, semiconductor materials, optical materials, paints and other fields. [0003] Alumina / carbon composite materials have the advantages of easy availability of raw materials, low cost, no pollution to the environment, wide application, and can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/34C02F1/28C02F101/20
CPCC01F7/34C01P2002/72C01P2002/85C01P2004/03C01P2004/04C02F1/281C02F1/283C02F2101/20
Inventor 王晓宿新泰鹿毅梁小玉杨超王吉德牛春革
Owner 纽博恩(佛山)科技有限公司
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