Montmorillonite composite adsorption material and its preparation method and application

A technology of composite adsorption material and montmorillonite, which is applied in the field of water treatment agent and its preparation, can solve the problems of immature research and development of advanced oxidation degradation technology, poor applicability, and needs to be improved, so as to improve the efficiency of photocatalyst, improve the adsorption capacity, The effect of large specific surface area

Active Publication Date: 2020-03-27
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, montmorillonite still needs to be improved in the treatment of PPCPs wastewater.

Method used

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  • Montmorillonite composite adsorption material and its preparation method and application
  • Montmorillonite composite adsorption material and its preparation method and application

Examples

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Embodiment 1

[0025] This embodiment provides a montmorillonite composite adsorption material, which includes montmorillonite and chitosan forming an intercalated structure with the montmorillonite, the chitosan is loaded with nano-titanium dioxide-mesoporous carbon precipitate, and the The nano-titania-carbon precipitate includes titania nanoparticles and a mesoporous carbon layer coated on the surface of the titania nanoparticles. Wherein, the mesopore diameter in the mesoporous carbon layer is 30-50 nm. The titanium dioxide nanoparticles are titanium dioxide nanospheres. In this embodiment, the content of chitosan is 5% of the mass of montmorillonite, and the content of titanium dioxide nanospheres is 50% of the mass of chitosan.

[0026] The present embodiment also provides a preparation method of the above-mentioned montmorillonite composite adsorption material, which comprises the following steps:

[0027] Step 1. Mix 200 parts by volume of ethanol, 50 parts by volume of acetonitril...

Embodiment 2

[0032] This embodiment provides a montmorillonite composite adsorption material. The structure of the composite adsorption material is basically the same as that of the composite adsorption material provided in Example 1, except that the mesopore diameter in the mesoporous carbon layer is 50-100nm, the content of chitosan is 6% of the mass of montmorillonite, and the content of titanium dioxide nanospheres is 70% of the mass of chitosan.

[0033] The preparation method of the above-mentioned montmorillonite composite adsorption material provided in this example is basically the same as the preparation method provided in Example 1, and the main difference is that: in step 1 of this example, an aqueous ethanol solution with a volume concentration of 35% is used, and in step 2 After adding acetic acid, the mass concentration of acetic acid was 2%.

Embodiment 3

[0035]This embodiment provides a montmorillonite composite adsorption material, the structure of the composite adsorption material is basically the same as that of the composite adsorption material provided in Example 1, the difference is that the mesoporous pore diameter in the mesoporous carbon layer is 40-70nm, the content of chitosan is 7% of the mass of montmorillonite, and the content of titanium dioxide nanospheres is 80% of the mass of chitosan.

[0036] The preparation method of the above-mentioned montmorillonite composite adsorption material provided in this embodiment is basically the same as the preparation method provided in Example 1, the main difference is that: in step 1 of this embodiment, an aqueous ethanol solution with a volume concentration of 40% is used, and step 2 After adding acetic acid, the mass concentration of acetic acid is 3%.

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Abstract

The invention provides a montmorillonite-containing composite adsorbing material. The montmorillonite-containing composite adsorbing material comprises montmorillonite and chitosan forming an intercalated structure with the montmorillonite, wherein the chitosan is loaded with a nanometer titanium dioxide-mesoporous carbon precipitate. The invention provides the montmorillonite-containing compositeadsorbing material prepared by a preparation method and application thereof. The montmorillonite-containing composite adsorbing material can be applied to treatment to PPCP pollutants such as chloramphenicol, penicillin, erythromycin, streptomycin, vancomycin, pipemidic acid, ibuprofen, diclofenac sodium in wastewater and is relatively good in treatment effect. The patented technology is funded by a key research project (15A610008) in a higher education institution and a doctoral research startup fund (201610009) in North China University of Water Resources and Hydropower.

Description

technical field [0001] The invention relates to a water treatment agent and a preparation method thereof, in particular to a montmorillonite composite adsorption material for adsorbing PPCPs pollutants and a preparation method thereof. Background technique [0002] PPCPs are short for 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, pain relievers, steroids, caffeine, etc.; the other is personal protective products, Including fragrances, hair sprays, cosmetics, etc. At present, the different types of PPCPs remaining in the global environment are mainly antibiotics and pyrolytic analgesics. Because most PPCPs have low volatility or are not easily degraded, most of them remain in the water environment, and the detection amount is relatively high. Large, PPCPs have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/34C02F101/36C02F101/38
CPCB01J20/06B01J20/12B01J20/20B01J20/24C02F1/28C02F2101/34C02F2101/36C02F2101/38
Inventor 孙垦
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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