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Magnetic nano-chlorine apatite adsorbent and preparation method thereof

A chloroapatite, magnetic nanotechnology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of small adsorption capacity, difficult separation of adsorbents, and difficulty in wide application, etc. The effect of secondary pollution, significant removal, and avoidance of secondary pollution

Inactive Publication Date: 2016-07-20
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used adsorbents for removing heavy metals mainly include zeolite, clay, apatite and other materials, but these adsorbents have disadvantages such as small adsorption capacity or difficult separation of adsorbents, so they are difficult to be widely used.
Nanomaterials have a large specific surface area and high adsorption capacity, so they have become widely used adsorbents in recent years; however, their performance and effect still need to be further improved and enhanced

Method used

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  • Magnetic nano-chlorine apatite adsorbent and preparation method thereof
  • Magnetic nano-chlorine apatite adsorbent and preparation method thereof
  • Magnetic nano-chlorine apatite adsorbent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A kind of magnetic nano chloroapatite adsorbent of the present invention, this magnetic nano chloroapatite adsorbent is made of nano chloroapatite and magnetic powder Fe 2 o 3 Composition, magnetic powder Fe 2 o 3 and nano-chloroapatite particles are uniformly distributed in phases, and the molecular formula of nano-chloroapatite is Ca 5 (PO 4 ) 3 Cl, magnetic powder Fe 2 o 3 The molar ratio to nano-chloroapatite is 10.3545:1.

[0034] The preparation method of above-mentioned magnetic nanometer chloroapatite adsorbent, comprises the following steps:

[0035] (1) 1.85mmol of FeCl 2 4H 2 O and 3.7 mmol FeCl 3 ·6H 2 O was dissolved in 30 mL of deoxygenated water and sonicated for 10 min. Under the condition of continuous stirring, 10 mL of ammonia solution with a concentration of 25% was added to obtain a mixed solution.

[0036] (2)CaCl 2 Solution preparation: weigh 1.9698gCaCl 2 2H 2 O into a beaker, add an appropriate amount of ultrapure water to dissol...

Embodiment 2

[0044] A kind of magnetic nano chloroapatite adsorbent of the present invention, this magnetic nano chloroapatite adsorbent is made of nano chloroapatite and magnetic powder Fe 2 o 3 Composition, magnetic powder Fe 2 o 3 and nano-chloroapatite particles are uniformly distributed in phases, and the molecular formula of nano-chloroapatite is Ca 5 (PO 4 ) 3 Cl, magnetic powder Fe 2 o 3 The molar ratio to nano-chloroapatite is 2.0709:1.

[0045] The preparation method of above-mentioned magnetic nanometer chloroapatite adsorbent, comprises the following steps:

[0046] (1) 1.85mmol of FeCl 2 4H 2 O and 3.7 mmol FeCl 3 ·6H 2 O was dissolved in 30 mL of deoxygenated water and sonicated for 10 min. Under the condition of continuous stirring, 10 mL of ammonia solution with a concentration of 25% was added to obtain a mixed solution.

[0047] (2)CaCl 2 Solution preparation: weigh 9.849g CaCl 2 2H 2 O into a beaker, add an appropriate amount of ultrapure water to dissolv...

Embodiment 3

[0054] A kind of magnetic nano chloroapatite adsorbent of the present invention, this magnetic nano chloroapatite adsorbent is made of nano chloroapatite and magnetic powder Fe 2 o 3 Composition, magnetic powder Fe 2 o 3 and nano-chloroapatite particles are uniformly distributed in phases, and the molecular formula of nano-chloroapatite is Ca 5 (PO 4 ) 3 Cl, magnetic powder Fe 2 o 3 The molar ratio to nano chloroapatite is 1.0355:1.

[0055] The preparation method of above-mentioned magnetic nanometer chloroapatite adsorbent, comprises the following steps:

[0056] (1) 1.85mmol of FeCl 2 4H 2 O and 3.7 mmol FeCl 3 ·6H 2 O was dissolved in 30 mL of deoxygenated water and sonicated for 10 min. Under the condition of continuous stirring, 10 mL of ammonia solution with a concentration of 25% was added to obtain a mixed solution.

[0057] (2)CaCl 2 Solution preparation: weigh 19.698g CaCl 2 2H 2 O into a beaker, add an appropriate amount of ultrapure water to dissol...

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Abstract

The invention discloses a magnetic nano-chlorine apatite adsorbent and a preparation method thereof. The magnetic nano-chlorine apatite adsorbent comprises nano-chlorine apatite and magnetic powder Fe2O3, wherein the mole ratio of the magnetic powder Fe2O3 to the nano-chlorine apatite is (1-11) to 1. The preparation method of the magnetic nano-chlorine apatite adsorbent comprises the following steps: in an inert gas atmosphere, dissolving FeCl2.4H2O and FeCl3.6H2O into deoxygenated water and adding ammonia water to obtain a mixed solution; dripping a CaCl2 solution and a Na3PO4 solution into the mixed solution at the same time to obtain colloid; heating the colloid to decompose the colloid, and ageing to obtain sediment; and separating the sediment with a magnet to obtain the product. The magnetic nano-chlorine apatite adsorbent disclosed by the invention is high in adsorption efficiency, large in specific surface area and easy to separate; and according to the preparation method, the preparation is simple and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of inorganic material adsorbents, and in particular relates to a magnetic nano-chloroapatite adsorbent and a preparation method thereof. Background technique [0002] At present, the problem of heavy metal pollution in my country is becoming more and more serious, which has seriously affected the survival and health of human beings, and the treatment of heavy metal pollution has become a hot issue. There are many ways to remove heavy metal ions in water. The traditional methods include chemical precipitation, redox, iron oxidation, electrolysis, evaporation concentration, ion exchange resin, etc., but these methods have problems such as high cost and cumbersome operation and management. , and it is difficult to realize the reuse of water resources. [0003] Adsorption has attracted widespread attention because of its low cost and good removal effect. Commonly used adsorbents for removing heavy metals mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/04B01J20/28B01J20/30C02F1/28
CPCB01J20/048B01J20/28009C02F1/281
Inventor 万佳曾光明黄丹莲赖萃文米胡亮薛文静龚小敏王荣忠
Owner HUNAN UNIV