Preparation method of submicron Fe-Al-Mg composite metal oxide fluorine remover

A composite metal, sub-micron-level technology, applied in the direction of alkali metal oxides/hydroxides, alkali metal compounds, chemical instruments and methods, etc., can solve problems such as imbalance of proportion, systemic fluorosis, joint disease, etc. The effect of low consumption and simple operation

Inactive Publication Date: 2018-05-11
CILIN & CAS ENVIRONMENTAL TECH ANHUIINC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, excessive fluorine intake can also bring harm to the human body. In mild cases, it will affect the enamel-ma

Method used

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  • Preparation method of submicron Fe-Al-Mg composite metal oxide fluorine remover
  • Preparation method of submicron Fe-Al-Mg composite metal oxide fluorine remover
  • Preparation method of submicron Fe-Al-Mg composite metal oxide fluorine remover

Examples

Experimental program
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Embodiment 1

[0030] Step 1: First prepare 300 ml of a mixed solution of magnesium nitrate, magnesium nitrate and aluminum nitrate with a molar concentration of 0.1333 mol / L and continue to stir vigorously, then slowly add 200 ml of ammonia solution with a molar concentration of 1.8 mol / L to the above mixed solution After solution, keep stirring for 1 hour;

[0031] Step 2: Transfer the obtained brown-yellow suspension to a volumetric device, and leave it to age at room temperature for 12 hours;

[0032] Step 3: filter, wash, and dry the aged brown-yellow suspension, and keep it warm at 80°C for 12 hours to obtain a Fe-Al-Mg composite metal oxide defluorination agent.

[0033] The above-mentioned Fe-Al-Mg composite metal oxide defluorination agent was characterized by scanning electron microscopy ( figure 1 a), it can be seen that it is a submicron structure, and its weight loss curve under high temperature conditions is obtained by a thermogravimetric analyzer ( image 3 ), using the Mic...

Embodiment 2

[0036] Step 1: First prepare 300 ml of a mixed solution of ferric chloride, magnesium chloride and aluminum chloride with a molar concentration of 0.1333 mol / L and continue to stir vigorously, then slowly add 200 mL of a sodium hydroxide solution with a molar concentration of 1.6 mol / L After reaching the above mixed solution, continue to stir for 1 hour;

[0037] Step 2: Transfer the obtained brown-yellow suspension to a volumetric device, and leave it to age at room temperature for 12 hours;

[0038] Step 3: After filtering, washing and drying the aged brown-yellow suspension, it was calcined and annealed at 300° C. for 4 hours to obtain a Fe-Al-Mg composite metal oxide defluorination agent.

[0039] The above-mentioned Fe-Al-Mg composite metal oxide defluorination agent was characterized by scanning electron microscopy ( figure 1 b), it can be seen that it is a submicron structure, and its weight loss curve under high temperature conditions is obtained by a thermogravimetri...

Embodiment 3

[0042] Step 1: First prepare 300 ml of magnesium nitrate, magnesium nitrate, and aluminum nitrate mixed solution with a molar concentration of 0.1333 mol / L and continue to stir vigorously, then slowly add 200 ml of potassium hydroxide solution with a molar concentration of 1.6 mol / L After reaching the above mixed solution, continue to stir for 1 hour;

[0043] Step 2: Transfer the obtained brown-yellow suspension to a volumetric device, and leave it to age at room temperature for 12 hours;

[0044] Step 3: Filter, wash, and dry the aged brown-yellow suspension, and calcine and anneal at 500°C for 4 hours to obtain a Fe-Al-Mg composite metal oxide defluorinating agent.

[0045] The above-mentioned Fe-Al-Mg composite metal oxide defluorination agent was characterized by scanning electron microscopy ( figure 1 c), it can be seen that it is a submicron structure, and its weight loss curve under high temperature conditions is obtained by a thermogravimetric analyzer ( image 3 ),...

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Abstract

The invention discloses a preparation method of a submicron Fe-Al-Mg composite metal oxide fluorine remover. The method comprises the steps as follows: soluble iron salt, aluminum salt, magnesium salt, an alkali source compound and an ion regulator are uniformly mixed in a solvent for a reaction, and a product obtained after the reaction is dried or calcined at different temperatures, and the submicron Fe-Al-Mg composite metal oxide is obtained. The submicron Fe-Al-Mg composite metal oxide has the characteristics of being low in energy consumption, simple to operate, convenient to synthesize at the room temperature and the like, cheap inorganic salt is adopted as a raw material, the submicron Fe-Al-Mg composite metal oxide with larger specific surface area and larger porosity is prepared and applied to adsorption of fluorine ions in polluted water as a fluorine remover; the submicron Fe-Al-Mg composite metal oxide fluorine remover is wide in application range for the pH value of water,simple to prepare and prone to industrial production, and the material can be widely applied to fluorine-containing wastewater treatment and has very high application value.

Description

technical field [0001] The invention relates to a preparation method of a submicron Fe-Al-Mg composite metal oxide defluorination agent. The composite metal oxide material can effectively remove fluorine ions in water, and belongs to the technical field of environmental protection and treatment. Background technique [0002] Fluorine is a non-metallic chemical element with chemical symbol F and atomic number 9, widely distributed in nature. As a trace element to maintain the normal operation of human body, fluorine plays a very important role in human health. Appropriate amount of fluorine can promote the formation of tooth hard tissue and the deposition of bone calcium, and it is also conducive to the absorption of calcium, phosphorus and other elements by the human body, accelerates bone formation, and promotes the anti-caries ability of teeth. However, excessive fluorine intake can also bring harm to the human body. In mild cases, it will affect the enamel-making functio...

Claims

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Application Information

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IPC IPC(8): B01J20/08B01J20/30B01J20/28C02F1/28C02F101/14
CPCB01J20/08B01J20/28059C02F1/281C02F2101/14
Inventor 孔令涛张开胜胡轶陈希凡
Owner CILIN & CAS ENVIRONMENTAL TECH ANHUIINC
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