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Preparation method of TiO2/active carbon net-loaded adsorption- photocatalysis water purifying composite material

A composite material and activated carbon technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of difficult recovery of powder suspension phase catalyst, poor treatment effect of organic pollution, secondary pollution and other problems, to achieve the effect of easy separation, difficult recycling, and accelerated separation

Inactive Publication Date: 2016-09-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention is to solve TiO 2 The photocatalytic powder suspension phase catalyst is not easy to recycle, easy to condense to cause secondary pollution, and has poor treatment effect on low-concentration organic pollution in water, and provides a net-loaded TiO 2 / Preparation method of activated carbon adsorption-photocatalytic water purification composite material

Method used

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  • Preparation method of TiO2/active carbon net-loaded adsorption- photocatalysis water purifying composite material
  • Preparation method of TiO2/active carbon net-loaded adsorption- photocatalysis water purifying composite material
  • Preparation method of TiO2/active carbon net-loaded adsorption- photocatalysis water purifying composite material

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specific Embodiment approach 1

[0029] Specific implementation mode 1: This implementation mode is a network-borne TiO 2 The preparation method of the adsorption-photocatalytic water purification composite material of activated carbon, specifically is carried out according to the following steps:

[0030] 1. Activated carbon pretreatment: Granular activated carbon and HNO with a volume fraction of 17% 3 The aqueous solution is uniformly mixed, then heated and stirred with a magnetic stirrer at a temperature of 100°C for 1h to 3h, then filtered and washed with distilled water for 6 to 7 times, and dried in a hot air dryer at a temperature of 80°C for 2h to obtain the prepared The activated carbon that has been processed; the mass and volume fraction of the granular activated carbon is 17% HNO 3 The volume ratio of the aqueous solution is 1g:(35mL~45mL);

[0031] 2. TiO 2 / Activated carbon composite powder preparation: add the activated carbon pretreated in step 1 to P25 type TiO 2 In the aqueous solution...

specific Embodiment approach 2

[0033] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mass and volume fraction of the granular activated carbon described in step one are 17% HNO 3 The volume ratio of the aqueous solution is 1g:41.7mL. Others are the same as the first embodiment.

specific Embodiment approach 3

[0034] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the P25 type TiO described in step two 2 P25 type TiO in aqueous solution 2The concentration is 500mg / L. Others are the same as the first embodiment.

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Abstract

The invention provides a preparation method of a TiO2 / active carbon net-loaded adsorption-photocatalysis water purifying composite material, and relates to a preparation method of an adsorption-photocatalysis water purifying composite material. The preparation method provided by the invention is used for solving the technical problem that a TiO2 photocatalysed powder suspended phase catalyst is not easy to recycle, is liable to coagulate to cause secondary pollution, and has poor treatment effect on water body low concentration organic contamination. The preparation method comprises the steps of first, pre-treating active carbon; second, preparing TiO2 / active carbon composite powder; third, loading the composite powder to a net. The preparation method has the following advantages: active carbon with excellent adsorbability is combined with a TiO2 photocatalyst to prepare adsorption-photocatalysis composite powder, and the powder is loaded to the nylon net, so as to effectively treat a wide water area and realize recycle. Placing the composite material provided by the invention into sewage, and naturally treating for 12 hours, the organic matter degradation rate reaches not less than 90 percent. The preparation method is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a preparation method of an adsorption-photocatalysis water purification composite material. Background technique [0002] The treatment methods of water organic pollutants mainly include: microbial method, physical method and chemical method. (1) The microbial method is powerless to some synthetic organic substances with high toxicity. (2) In the physical method, the adsorbent of the adsorption method is difficult to regenerate, the steam stripping method is not suitable for low-concentration pollution, the solvent extraction method is difficult to recover the extraction agent, resulting in secondary pollution, and the ion exchange method and membrane separation method treat large areas of water. Energy consumption too high. (3) In the chemical method, the cost of using chemicals in the incineration method is too high, and the micro-electrolysis method also has the problem of high energy consumption. [0003] TiO 2 Photocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C02F1/30C02F1/28B01J21/18C02F101/30
CPCB01J20/06B01J20/20C02F1/281C02F1/30B01J21/18C02F2101/30B01J35/39
Inventor 丁雅妮宋欣程指扬高继慧
Owner HARBIN INST OF TECH
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