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Magnetic composite adsorbent and preparation method thereof

A composite adsorption and magnetic technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve the problems of secondary pollution, high treatment cost, low treatment efficiency, etc. The effect of high adsorption efficiency and low treatment cost

Inactive Publication Date: 2019-06-07
武汉山友爆破科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have the disadvantages of high treatment cost, low treatment efficiency and easy to produce secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This embodiment provides a method for preparing a magnetic composite adsorbent, comprising the following steps:

[0021] Step (1): Take ferric oxide and expanded vermiculite, grind them evenly, add distilled water, ultrasonically disperse, and dry to obtain a composite of ferric oxide and vermiculite.

[0022] Adopt chemical co-precipitation method to prepare ferric oxide in step (1), the preparation method of ferric oxide is: FeCl 2 4H 2 O and FeCl 3 Add it into a certain amount of distilled water at a molar ratio of 1:2, stir to make it evenly mixed, stir in a magnetic stirrer at 60°C for 30 minutes, and then slowly add a certain amount of sodium hydroxide solution until the black precipitate is no longer Regeneration, that is, stop adding sodium hydroxide solution (the pH of the solution is about 11 at this time), and finally use an external magnet to separate the obtained black precipitate, wash it repeatedly with distilled water to neutrality, and dry it in an ov...

Embodiment 2

[0027] This embodiment provides a method for preparing a magnetic composite adsorbent, comprising the following steps:

[0028] Step (1): Take ferric oxide and expanded vermiculite, grind them evenly, add distilled water, ultrasonically disperse, and dry to obtain a composite of ferric oxide and vermiculite.

[0029] Adopt chemical co-precipitation method to prepare ferric oxide in step (1), the preparation method of ferric oxide is: FeCl 2 4H 2 O and FeCl 3 Add it into a certain amount of distilled water at a molar ratio of 1:2, stir to make it evenly mixed, stir in a magnetic stirrer at 60°C for 30 minutes, and then slowly add a certain amount of sodium hydroxide solution until the black precipitate is no longer Regeneration, that is, stop adding sodium hydroxide solution (the pH of the solution is about 11 at this time), and finally use an external magnet to separate the obtained black precipitate, wash it repeatedly with distilled water to neutrality, and dry it in an ov...

Embodiment 3

[0034] This embodiment provides a method for preparing a magnetic composite adsorbent, comprising the following steps:

[0035] Step (1): Take ferric oxide and expanded vermiculite, grind them evenly, add distilled water, ultrasonically disperse, and dry to obtain a composite of ferric oxide and vermiculite.

[0036] Adopt chemical co-precipitation method to prepare ferric oxide in step (1), the preparation method of ferric oxide is: FeCl 2 4H 2 O and FeCl 3 Add it into a certain amount of distilled water at a molar ratio of 1:2, stir to make it evenly mixed, stir in a magnetic stirrer at 60°C for 30 minutes, and then slowly add a certain amount of sodium hydroxide solution until the black precipitate is no longer Regeneration, that is, stop adding sodium hydroxide solution (the pH of the solution is about 11 at this time), and finally use an external magnet to separate the obtained black precipitate, wash it repeatedly with distilled water to neutrality, and dry it in an ov...

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Abstract

The invention belongs to the technical field of heavy metal treatment and discloses a preparation method of a magnetic composite adsorbent. The preparation method comprises the following steps: (1) uniformly grinding ferroferric oxide and expanded vermiculite, adding distilled water, carrying out ultrasonic dispersion, and carrying out drying to obtain a compound of ferroferric oxide and vermiculite; (2) under the stirring action of a magnetic stirrer, slowly adding polyacrylamide and xanthan gum into the compound of ferroferric oxide and vermiculite prepared in the step (1) at room temperature, carrying out stirring and dissolving, and carrying out drying to obtain the magnetic composite adsorbent. The invention further discloses the magnetic composite adsorbent which is prepared according to the preparation method of the magnetic composite adsorbent. The magnetic composite adsorbent disclosed by the invention is high in adsorption efficiency and short in treatment time, is convenientto remove and is free of secondary pollution, the recovery rate and reuse rate are high, and treatment cost is low.

Description

technical field [0001] The invention belongs to the technical field of heavy metal treatment, in particular to a magnetic composite adsorbent and a preparation method thereof. Background technique [0002] Water is the source of human life. In recent years, with the rapid development of the national economy and industrialization process, the problem of water pollution in my country has become increasingly serious, and the available fresh water resources are also decreasing day by day. There are many factors causing water pollution, the main sources of which are metallurgy, electroplating, petrochemical and other industries. Among them, the pollution of heavy metals to water quality is particularly prominent. In water, even if the heavy metal content is very small, as long as it exceeds the tolerance of human beings or natural organisms, it will cause serious harm to human beings and ecology. In addition, once heavy metals enter the water body, they are easily absorbed by a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20
Inventor 高广义桂谦
Owner 武汉山友爆破科技工程有限公司