MgO/MgCO3 compound adopting micro-nano hierarchical structure and application of MgO/MgCO3 compound serving as fluorine remover

A hierarchical structure and compound technology, applied in water pollutants, other chemical processes, water/sewage treatment, etc., can solve the problems of poor fluorine adsorption treatment effect, reduced specific surface area, uneven particle size, etc. Fluorine effect, improvement of fluorine removal performance, effect of increasing specific surface area

Active Publication Date: 2015-05-13
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, nano-magnesium aluminum hydrotalcite mainly adopts the co-precipitation method of salt solution and alkali solution. Since the reaction is carried out in the same phase and the reaction rate is fast, the local concentration is too high, the controllability is poor, and the formed particles are often uneven in size, which is easy to Agglomeration and coagulation occur, and the specific surface area decreases, the dispersion is poor, and the effect of fluorine adsorption treatment is not good

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • MgO/MgCO3 compound adopting micro-nano hierarchical structure and application of MgO/MgCO3 compound serving as fluorine remover
  • MgO/MgCO3 compound adopting micro-nano hierarchical structure and application of MgO/MgCO3 compound serving as fluorine remover
  • MgO/MgCO3 compound adopting micro-nano hierarchical structure and application of MgO/MgCO3 compound serving as fluorine remover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Step 1: First prepare 100 ml of a magnesium nitrate solution with a mass concentration of 3.7% and continue to stir vigorously, then slowly add the prepared 20 ml of a sodium carbonate solution with a mass concentration of 11.7% to the magnesium nitrate solution, and continue stirring for 1 hour;

[0040] Step 2: Transfer the obtained milky white suspension to a water bath device and continue vigorously stirring and reacting at 80°C for 30 minutes;

[0041] Step 3: After the reaction is completed, cool, filter, wash, dry, and sinter at a high temperature of 300 ° C to obtain a micro-nano hierarchical structure MgO / MgCO 3 Compound defluoridation agent.

[0042] The morphology of the defluorinating agent was characterized by scanning electron microscopy (such as figure 1 ), it can be seen that it is a micro-nano hierarchical structure; the X-ray diffractometer and Fourier transform infrared spectrometer analysis shows that the material is MgO / MgCO 3 Compounds (such as ...

Embodiment 2

[0045] Step 1: First prepare 100 ml of a magnesium sulfate solution with a mass concentration of 3.0% and continue to stir vigorously, then slowly add the prepared 20 ml of a potassium carbonate solution with a mass concentration of 14.4% to the magnesium sulfate solution, and continue stirring for 1 hour;

[0046] Step 2: Transfer the obtained milky white suspension to a water bath device and continue vigorously stirring and reacting at 80°C for 30 minutes;

[0047] Step 3: After the reaction is completed, cool, filter, wash, dry, and sinter at a high temperature of 300 ° C to obtain a micro-nano hierarchical structure MgO / MgCO 3 Compound defluoridation agent.

[0048] The obtained micro-nano hierarchical structure MgO / MgCO of this example 3 The composite defluoridation agent is applied to the adsorption of fluoride ions in water as follows:

[0049] Step 4: Take 10 g of the obtained micro-nano hierarchical structure MgO / MgCO 3 The composite defluoridation agent was mixed ...

Embodiment 3

[0053] Step 1: First prepare 100 ml of a magnesium chloride solution with a mass concentration of 2.4% and continue to stir vigorously, then slowly add the prepared 20 ml of a sodium carbonate solution with a mass concentration of 11.7% to the magnesium chloride solution, and continue stirring for 1 hour;

[0054] Step 2: Transfer the obtained milky white suspension to a water bath device and continue vigorously stirring and reacting at 80°C for 30 minutes;

[0055] Step 3: After the reaction is completed, cool, filter, wash, dry, and sinter and anneal at a high temperature of 300°C for 4 hours to obtain a micro-nano hierarchical structure MgO / MgCO 3 Compound defluoridation agent.

[0056] The obtained micro-nano hierarchical structure MgO / MgCO of this example 3 The composite defluoridation agent is applied to the adsorption of fluoride ions in water as follows:

[0057] Step 4: 10 g of obtained micro-nano hierarchical structure MgO / MgCO 3 The composite defluoridation agent...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention discloses an MgO/MgCO3 compound adopting a micro-nano hierarchical structure and an application of the MgO/MgCO3 compound serving as a fluorine remover. According to the MgO/MgCO3 compound adopting the micro-nano hierarchical structure, characteristics of low energy consumption, simplicity, easiness in operation and the like of a water bath device lower than 100 DEG C are used and chip inorganic salt is taken as the raw material for preparation of the MgO/MgCO3 compound adopting the uniform micro-nano hierarchical structure and serving as the fluorine remover to be uniformly dispersed in water so as to absorb fluorinions in water. According to the micro-nano hierarchical structure of the MgO/MgCO3 compound, the specific surface area of the material is increased, the fluorine absorbing surface active sites of the material are increased, so that the fluorine absorbing effect of the adsorbent is improved greatly. The MgO/MgCO3 compound fluorine remover adopting the micro-nano hierarchical structure has a wide apparition range for the pH value in water and has remarkable application effect on treatment of fluorine-containing water.

Description

technical field [0001] The invention relates to micro-nano hierarchical structure MgO / MgCO 3 Composite and its application as a fluoride removal agent, specifically, relate to a kind of micro-nano hierarchical structure MgO / MgCO 3 The composite material can effectively remove fluorine ions in water, and belongs to the technical field of environmental treatment. Background technique [0002] Fluorine is a trace element of life closely related to human health, mainly distributed in the bones and teeth of the human body. Fluoride exists widely in water bodies in nature, and the existence of a moderate amount of fluorine in water is beneficial to human health. However, excessive fluorine intake will lead to poisoning of human beings, animals and plants. It has been reported that when the concentration of fluoride ion in water is 2mg / L, obvious dental fluorosis will occur; when the concentration of fluoride ion is 8mg / L, about 10% of the population will have osteosclerosis; ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30C02F1/28C02F1/58C02F101/14C02F101/36
CPCB01J20/06C02F1/281C02F1/288C02F2101/14C02F2101/36
Inventor 孔令涛张开胜孙柏罗涛贾勇金震刘锦淮
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap