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Rare earth/tourmaline composite material, as well as preparation method and application thereof

A technology of composite materials and tourmaline, which is applied in the field of rare earth/tourmaline composite materials and their preparation, can solve problems such as difficult to completely remove and difficult to quickly degrade, and achieve fast adsorption speed, easy recycling, and improved material utilization.

Inactive Publication Date: 2013-10-16
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the above three types of pollutants, it is difficult to completely remove them using conventional water treatment processes, and it may be difficult to quickly degrade them in natural water bodies, which has led to frequent widespread attention to water quality problems

Method used

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  • Rare earth/tourmaline composite material, as well as preparation method and application thereof
  • Rare earth/tourmaline composite material, as well as preparation method and application thereof
  • Rare earth/tourmaline composite material, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 A rare earth / tourmaline composite material is prepared through the following steps:

[0029] The natural mineral tourmaline was ground and passed through a 300-mesh sieve, and 10 g was added to 50 mL 0.5 M La(NO 3 ) 3 In the solution, ultrasonic (20 KHz ~ 40 KHz) was dispersed for 5 minutes, then electromagnetically stirred for 24 hours. After solid-liquid separation, the obtained solid material was dried at 65°C for 12 hours to prepare rare earth lanthanum-modified tourmaline. The scanning electron micrograph and energy spectrum analysis figure of this rare earth lanthanum modified tourmaline can be found in figure 1 , figure 2 , the analysis of its electron microscope photos shows that the natural tourmaline material used still maintains the morphology characteristics of natural tourmaline after modification, and the particle size is in the micron order; through energy spectrum analysis, it can be seen that the rare earth lanthanum modified tourmaline ...

Embodiment 2

[0035] Example 2 A rare earth / tourmaline composite material, the preparation method of which is basically the same as that of Example 1, except that the modified tourmaline obtained by solid-liquid separation is calcined at 300°C for 2 hours.

[0036]Take 10 mg of the above-mentioned rare earth lanthanum-modified tourmaline and add it to 50 mL of tetracycline solution with pH=5.0. After adsorption for 24 h, the pH can be automatically adjusted to 7.4.

Embodiment 3

[0037] Embodiment 3 Bactericidal test

[0038] Take 300 mg of the rare earth lanthanum-modified tourmaline described in Example 1, add it to 30 mL of Staphylococcus aureus solution, cultivate it in a constant temperature incubator at 36 °C for 6 h, and calculate the number of colonies, and the average antibacterial rate reaches 98%.

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Abstract

The invention relates to a rare earth / tourmaline composite material, as well as a preparation method and the application thereof, and aims to solve the difficult problem that quickly and efficiently removing various pollutants in water is difficult. The rare earth / tourmaline composite material is rare earth modified tourmaline obtained by adding tourmaline into a rare earth element solution with the concentration of 0.01-1.0 mol / L to be subjected to ultrasonic dispersion processing, and then performing stirring, solid-liquid separation as well as drying or calcining. The rare earth / tourmaline composite material provided by the invention has high mechanochemistry stability, has functions of composition, synergy and the like, can also reduce cost, improves the utilization ratio of the material, has the advantages of high adsorption speed, large capacity, wide applicable pH range, easiness in reutilization and the like, can improve operation efficiency and lower cost in the application of a water purification processing process, has a higher adsorption capacity, can realize sustainable use, and has high recycling rate and a good development prospect in the environmental field; the preparation process provided by the invention is simple; the modified tourmaline prepared according to the preparation process is good in dispersion.

Description

technical field [0001] The invention relates to the technical field of tourmaline application, in particular to a rare earth / tourmaline composite material and its preparation method and application. Background technique [0002] Tourmaline is a ring-structured silicate mineral containing boron, aluminum, sodium, iron and lithium. There is an electrostatic field around the tourmaline particles, and the permanent spontaneous polarization effect makes it have properties such as pyroelectricity, piezoelectricity, natural electrical polarity, infrared radiation, negative ion release, and automatic adjustment of the pH value of water to near-neutrality. Exploiting the functional properties of tourmaline and applying it to environmental protection, medical care, electromagnetic shielding and other fields has potential economic benefits and social significance. However, the characteristics of a single tourmaline cannot meet the comprehensive performance requirements and high index...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30B01J20/34C02F1/28C02F1/66
Inventor 李国亭高如琴王海荣李东颖杨光瑞赵伟高谷启源
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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