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Kaolin composite and preparation method thereof

A composite material, kaolin technology, applied in chemical instruments and methods, other chemical processes, water treatment of special compounds, etc., can solve the problems of poor PPCPs wastewater treatment effect, immature research and development of advanced oxidative degradation technology, and need to be improved, etc. The effect of reducing processing cost, improving surface-to-body ratio, and prolonging service life

Inactive Publication Date: 2018-02-16
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the research and development of advanced oxidative degradation technology is immature, costly, and poor in applicability, and curing is an important prerequisite for complete degradation. Solid phase adsorption is still the most commonly used method for PPCPs pollution treatment.
However, among all kinds of clay minerals, kaolin has a poor treatment effect on PPCPs wastewater and needs to be improved.

Method used

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  • Kaolin composite and preparation method thereof
  • Kaolin composite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] This embodiment provides a kaolin composite material, which includes CTAB intercalation modified kaolin and titanium dioxide nanoparticles (TiO2) loaded on the CTAB intercalation modified kaolin. 2 ). Specifically, the particle size of the titanium dioxide nanoparticles is 10-50 nm, and the TiO 2 Nanoparticles are loaded on the surface or in the intercalation structure of the CTAB intercalation modified kaolin, and the TiO 2 The mass ratio of nanoparticles to the CTAB intercalated modified kaolin is about 1:14.

[0021] The present embodiment also provides a method for preparing the above-mentioned kaolin composite material, which includes the following steps:

[0022] Preparation of intercalated modified kaolin: first add 10 parts by mass of kaolin raw soil to 100 volumes of powdered deionized water and mix evenly, then heat to 70°C and keep the temperature for 1 hour to obtain a suspension; add 1 mass part of cetyltrimethylammonium bromide, stirred at room temperat...

Embodiment 2

[0026] This embodiment provides a kaolin composite material, the structure of the kaolin composite material is basically the same as that of the PPCPs pollutants provided in Example 1, the main difference is that the TiO 2 The mass ratio of nanoparticles to the CTAB intercalation modified kaolin is about 1:20.

[0027] The preparation method of the above-mentioned kaolin composite material provided in this example is basically the same as that provided in Example 1, the main difference is that in the step of preparing the product in this example, the muffle furnace operates at a temperature of 3°C / min The heating rate was increased to 620°C, and the constant temperature calcination time was 12h.

Embodiment 3

[0029] This embodiment provides a kaolin composite material, the structure of the kaolin composite material is basically the same as that of the PPCPs pollutants provided in Example 1, the main difference is that the TiO 2 The particle size of the nanoparticles is 30-80nm, and the TiO 2 Nanoparticles are substantially loaded on the surface of the CTAB intercalated kaolin, and the TiO 2 The mass ratio of nanoparticles to the CTAB intercalated modified kaolin is about 1:30.

[0030] The preparation method of the above-mentioned kaolin composite material provided in this example is basically the same as the preparation method provided in Example 1, the main difference is that in the step of preparing the product in this example, the muffle furnace operates at 4°C / min The heating rate was increased to 580°C, and the constant temperature calcination time was 8h.

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Abstract

The invention provides a kaolin composite, comprising intercalation modified kaolin and titanium dioxide nanoparticles supported on the same; the intercalation modified kaolin is cetyl trimethyl ammonium bromide intercalation modified kaolin. The invention also provides a preparation method of the kaolin composite. The kaolin composite provided herein is suitable for treating polluting PPCPs (pharmaceutical and personal care products) in wastewater, such as chloramphenicol, penicillin, erythromycin, streptomycin, vancomycin, pipemidic acid and diclofenac sodium, and the treatment effect is good.

Description

technical field [0001] The invention relates to a water treatment agent and a preparation method thereof, in particular to a kaolin composite material for adsorbing PPCPs pollutants and a preparation method thereof. Background technique [0002] PPCPs is the abbreviation of Drugs and Personal Protective Products, which are widely used in humans, livestock, and fish. There are more than 3,000 chemical components that make up PCCPs, mainly including two categories: one is drugs, including antibiotics, analgesics, hormones, diuretics, painkillers, steroids, caffeine, etc.; the other is personal protective products, Includes fragrances, hairspray, cosmetics, and more. At present, the different types of PPCPs left in the global environment are mainly antibiotics and pyrolytic analgesics. Because most of the PPCPs have low volatility or are not easy to degrade, most of them are left in the water environment and the detection amount is relatively low. Large, PPCPs have threatened...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F1/30
CPCB01J20/22C02F1/285C02F1/30C02F2305/10
Inventor 孙垦
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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