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Preparation method for composite magnetic adsorption material and method for removing heavy metal ions in waste water

A heavy metal ion, composite magnetic technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sewage treatment and other directions, can solve the problems of cumbersome liquid-solid separation, application limitation, complexity, etc. Fast, cost-effective results

Inactive Publication Date: 2014-03-12
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the choice of various adsorbents determines the feasibility of the adsorbent. In this regard, many new adsorbents have been developed, but their application is limited due to their complicated and cumbersome liquid-solid separation.

Method used

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  • Preparation method for composite magnetic adsorption material and method for removing heavy metal ions in waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The magnetite is finely ground in a pulverizer for a certain period of time to prepare a submicron magnetic particle powder with an average particle size of 0.8 μm. Put the above prepared magnetic particles into a three-necked flask, add chitosan, kerosene and water, magnetic particles: chitosan: kerosene: water (mass ratio) = 1:5:0.1:1000, keep the temperature at 70°C, stir React for 100 minutes. The magnetic substance is separated by magnetic separation, washed with deionized water for 3-5 times, and dried in vacuum to obtain a composite magnetic adsorption material.

Embodiment 2

[0033] The magnetite is finely ground in a pulverizer for a certain period of time to prepare a submicron magnetic particle powder with an average particle size of 0.8 μm. Put the prepared magnetic particles above into a three-necked flask, add chitosan, kerosene and water, magnetic particles: chitosan: kerosene: water (mass ratio) = 1:10:0.1:1000, keep the temperature at 70°C, stir React for 100 minutes. The magnetic substance is separated by magnetic separation, washed with deionized water for 3-5 times, and dried in vacuum to obtain a composite magnetic adsorption material.

Embodiment 3

[0035]The magnetite is finely ground in a pulverizer for a certain period of time to prepare a submicron magnetic particle powder with an average particle size of 0.8 μm. Put the above prepared magnetic particles into a three-necked flask, add chitosan, kerosene and water, magnetic particles: chitosan: kerosene: water (mass ratio) = 1:0.1:0.1:1000, keep the temperature at 90°C, stir React for 30 minutes. The magnetic substance is separated by magnetic separation, washed with deionized water for 3-5 times, and dried in vacuum to obtain a composite magnetic adsorption material.

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Abstract

The invention relates to a preparation method for a composite magnetic adsorption material and a method for removing heavy metal ions in waste water. The preparation method comprises the following steps: (1) putting a magnetic seed in a grinding machine for fine grinding so as to obtain a submicron magnetic particle; (2) mixing the magnetic particle and a high-molecular natural material capable of absorbing heavy metals with a solvent, adding a flocculating agent and carrying out uniform mixing and a reaction so as to obtain a spherical composite magnetic product; and (3) subjecting the composite magnetic product to magnetic separation, washing and drying so as to obtain the composite magnetic adsorption material. The magnetic adsorption material is added into waste water containing heavy metal ions, then stirring, adsorption and a reaction are carried out, a magnet separator is used for magnetic separation and adsorption of magnetic material containing heavy metal ions, and heavy metals are recovered. According to the invention, the adsorption material is easy to prepare; the removal rate of the heavy metals is high; the advantages of simple process, low cost and environment friendliness are obtained; and the methods are suitable for industrial application.

Description

technical field [0001] The invention relates to a preparation method of a composite magnetic adsorption material and a method for using it to remove heavy metal ions in waste water. Background technique [0002] my country is a country seriously short of water resources, and the per capita fresh water resources are only a quarter of the world's average level. With the increase in population growth and economic development, resource consumption has increased and environmental pollution has intensified. As a result, my country's main rivers, Lakes and groundwater were polluted to varying degrees. In recent years, the rapid development of nonferrous metallurgy, electronics, electroplating, light industry and other industries has provided important support for the rapid development of my country's economy and the significant improvement of people's living standards. The types have greatly increased, posing a great threat to the ecological security of my country's water, soil, atm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 郑其严波段锦
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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