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Inorganic composite material of catalytic degradation surface active agent waste water and preparation method thereof

A technology of inorganic composite materials and surfactants, applied in the field of preparation of new inorganic composite photocatalytic materials, can solve the problems of poor stability, long time-consuming biological methods, economical, technical, practical and environmental influence defects, etc. The effect of good performance and high compressive strength

Inactive Publication Date: 2011-01-05
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And so far, various processing methods have certain defects from the aspects of economy, technology, practicability and impact on the environment.
The biological method takes a long time and has poor reproducibility and stability; the catalytic oxidation method has problems such as powder recovery and separation, making industrial application difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Mix 5% of limestone, 30% of diatomaceous earth, 30% of bentonite, 10% of graphite and 25% of hydroxymethylcellulose sodium CMC-Na, and make granules; take the above granules and activate and roast them at 500°C for 1 hour. Obtain a porous lightweight inorganic composite material matrix; composite nano-TiO on the surface of the matrix 2 sol, the number of recombination is 3 times, and TiO 2 Sol complex; take TiO 2 The sol composite body is calcined at 400°C for 1h in a muffle furnace to obtain an inorganic composite material that catalyzes the degradation of surfactant wastewater; the composite step is: the TiO 2 The sol was coated on the surface of the substrate and fired at 400 °C for 1 h to form TiO on the surface of the substrate. 2 nanocrystalline film.

[0018] Application of catalytic degradation of surfactant wastewater:

[0019] Take 2.23g of inorganic composite materials for catalytic degradation of surfactant wastewater, add 25mL of N-hydroxyphthalimide wa...

Embodiment 2

[0021] Mix 5% limestone, 30% diatomaceous earth, 30% bentonite, 15% graphite and 20% hydroxymethylcellulose sodium CMC-Na to granulate; take the above granules and activate and roast them at 400°C After 1.5 hours, the porous lightweight inorganic composite material matrix is ​​obtained; nano-TiO is compounded on the surface of the matrix 2 sol, the number of recombination is 7 times, and TiO 2 Sol complex; take the above TiO 2 The sol composite body was calcined at 600°C for 1.5h in a muffle furnace to obtain an inorganic composite material that catalyzes the degradation of surfactant wastewater; the composite step is: the TiO 2 The sol was coated on the surface of the substrate and fired at 900 °C for 1 h to form TiO on the surface of the substrate. 2 nanocrystalline film.

[0022] Application of catalytic degradation of surfactant wastewater:

[0023] Take 1.51g of inorganic composite materials for catalytic degradation of surfactant wastewater, add 25mL of N-hydroxyphth...

Embodiment 3

[0025] Mix 10% limestone, 35% diatomaceous earth, 40% bentonite, 10% graphite and 5% hydroxymethylcellulose sodium CMC-Na into granules; take the above granules and activate and roast them at 400°C In 2.5 hours, the porous lightweight inorganic composite material matrix is ​​obtained; nano-TiO is compounded on the surface of the matrix 2 sol, the number of recombination is 9 times, and TiO 2 Sol complex; take the above TiO 2 The sol composite was calcined at 450° C. for 3 hours in a muffle furnace to obtain an inorganic composite material that catalyzes the degradation of surfactant wastewater; the composite step is: the TiO 2 The sol was coated on the surface of the substrate and fired at 600 °C for 3 hours to form TiO on the surface of the substrate. 2 nanocrystalline film.

[0026] Application of catalytic degradation of surfactant wastewater:

[0027] Get 1.92g of inorganic composite materials that catalyze the degradation of surfactant wastewater, add 25mL concentrati...

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PUM

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Abstract

The invention relates to an inorganic composite material of catalytic degradation surface active agent waste water, which is characterized by comprising the following materials in percentage by weight: 5-15 percent of limestone, 30-50 percent of diatomite, 30-50 percent of swell soil, 5-20 percent of expansion graphite and 5-25 percent of sodium cellulose glycolate (CMC-Na). The preparation method comprises the following steps of: mixing and pelleting the materials; obtaining a base body by calcining the materials at the temperature of 400 DEG C-900 DEG C; compounding TiO2 sol on the surface of the base body; and preparing the inorganic composite material by roasting the base body at the temperature of 400 DEG C-900 DEG C. The preparation method of the inorganic composite material of the catalytic degradation surface active agent waste water has the advantages of simple process, easy obtaining and low cost of the materials; and the inorganic composite material of the catalytic degradation surface active agent waste water has high speed of degradation surface active agent waste water and high degradation rate.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a preparation method of a porous light-weight inorganic composite photocatalytic new material which can be recycled by adsorbing and catalytically degrading surfactants. Background technique [0002] Surfactants are a large class of organic compounds that contain organic groups and have both hydrophilic and hydrophobic groups. Surfactants are often used as mineral flotation collectors, activators, regulators or inhibitors for industrial purposes. Surfactant-containing wastewater is commonly treated with biological methods and catalytic oxidation methods. But so far, various treatment methods have certain defects in terms of economy, technology, practicality and impact on the environment. The biological method takes a long time and has poor reproducibility and stability; the catalytic oxidation method has problems such as powder recovery and separation, a...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J21/06B01J35/10C02F1/72C02F1/28C02F1/30
Inventor 雷绍民李佩悦李雪琴杨光
Owner WUHAN UNIV OF TECH
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