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A preparation method of recyclable magnetic adsorption material for heavy metal treatment

A technology for magnetic adsorption materials and heavy metals, applied in the directions of alkali metal compounds, water/sewage treatment, chemical instruments and methods, etc., to achieve the effect of improving recyclability, good adsorption performance, and enhanced functional effects

Active Publication Date: 2021-09-21
湘潭中环水务有限公司
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Problems solved by technology

Experimental studies have found that chitosan is ineffective against heavy metal Sb(Ⅲ)

Method used

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  • A preparation method of recyclable magnetic adsorption material for heavy metal treatment
  • A preparation method of recyclable magnetic adsorption material for heavy metal treatment
  • A preparation method of recyclable magnetic adsorption material for heavy metal treatment

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preparation example Construction

[0034] A kind of preparation method of the recyclable magnetic adsorption material that is used for heavy metal treatment, promptly is used for the preparation method of the composite material CMC of heavy metal treatment, comprises the steps:

[0035] S1: the nano-Fe 3 o 4 Ultrasonic dispersion in a three-necked flask containing deionized water to form Suspension A;

[0036]Dissolve MOFs and CS in a beaker and stir well to form a stable suspension B. The mass ratio of MOFs and CS is 1:4 to 4:1. In practice, the mass ratio of MOFs and CS can be selected as 1:4 or 1:2 , 1:1, 2:1 or 4:1;

[0037] S2: According to Fe 3 o 4 The mass ratio of CS to CS is 1:4~4:1, inject the suspension B into the suspension A drop by drop, and stir rapidly to form a uniform and stable suspension, and then add pure N 2 The reaction solution is completely deoxygenated by bubbling, and during specific implementation, Fe 3 o 4 The mass ratio to CS can be selected as 1:4, 1:2, 1:1, 2:1 or 4:1;

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Abstract

The invention relates to a preparation method of a recyclable magnetic adsorption material for heavy metal treatment. The method selects non-toxic chitosan (CS) as a carrier, and then Fe 3 o 4 and MOFs materials loaded on its surface to synthesize a new composite material, in which the mass ratio of MOFs and CS is 1:4-4:1, Fe 3 o 4 The mass ratio to CS is 1:4 to 4:1, using 2,2-azabis(2-imidazoline) dihydrochloride as the initiator and stirring in a constant temperature water bath at 40°C to 80°C for 30min to 150min, The initiator concentration is 0.5mmoL·L ‑1 ~1.5mmoL·L ‑1 ;Finally, purify several times, and use a magnet to separate, put into a vacuum oven, and vacuum dry until it contains no moisture, and the composite material CMC is obtained. The prepared CMC is a composite material with good performance combining magnetic organic and inorganic materials. The magnetic composite material synthesized by this method is simple to operate, no toxic and harmful substances will be produced during the production process, the raw material is cheap, and can be recycled by an external magnetic field. use, greatly saving costs.

Description

technical field [0001] The invention relates to the field of energy and environmental protection, in particular to the preparation of a recyclable magnetic adsorption material used for heavy metal treatment. Background technique [0002] With the rapid development of industry, pollutants such as heavy metals and dyes have caused serious water pollution problems. Antimony (Sb) is a metalloid element with potential toxicity and carcinogenicity, which widely exists in human living environment. At present, antimony pollution has become a serious global problem, and its pollution sources mainly come from the burning of fossil fuels and antimony-containing wastes and mining activities. The annual production of diodes, batteries and flame retardants worldwide will consume a large amount of antimony, causing serious antimony pollution problems. The mining and smelting of antimony is also likely to cause serious soil pollution, which poses certain health threats to residents in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/30B01J20/24C02F1/28C02F101/20
CPCB01J20/04B01J20/226B01J20/24B01J20/28009C02F1/281C02F1/285C02F1/286C02F2101/20
Inventor 朱国成詹浩
Owner 湘潭中环水务有限公司
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