Method for preparing emulsified nanometer grade zero valent iron and nanometer grade bimetal and use thereof

A nano-scale, zero-valent iron technology is applied in the field of preparation of emulsified nano-scale zero-valent iron and nano-scale bimetals, which can solve the problems of slow reaction speed, low reactivity, and polynitrite, etc. Simple preparation method
CN1806974AInactive Publication Date: 2006-07-26ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2006-07-26
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses the method for preparation of emulsified nanometer zero valence iron and nanometer bimetallic. The method comprises the following steps: 1 adding the NaBH4 solution into the mixture solution of FeSO4.7H2O and stabilizing agent which is amylogen, getting the emulsified nanometer zero valence iron, the density of amylogen being 0.2-2%, the mole ratio of NaBH4 and FeSO4.7H2O solution being 2:1; 2 mixing emulsified nanometer zero valence iron and K2PdCl6 solution, carrying out reaction, entering nitrogen, when the color of solution changed from bistre to pea green, getting the nanometer bimetallic, the proportion by weight of Pd and Fe being 5-10:10000. The emulsified nanometer zero valence iron and nanometer bimetallic are used to restore the pollution water containing chlorine, nitrate anion and heavy metal. The method is simple, the specific surface area of emulsified bimetallic particle is large, the dispersity is good, and the chemical reactivity is high.
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Description

technical field

[0001] The invention relates to a preparation method and application of emulsified nano-scale zero-valent iron and nano-scale bimetal. Background technique

[0002] Various pollutants discharged in the process of production and life enter the environment through various channels, seriously polluting the atmosphere, soil, groundwater and surface water systems, and seriously threatening the healthy life of human beings. Chlorine-containing organic compounds, nitrates, and heavy metals are common priority pollutants in groundwater, and these pollutants are usually mixed in polluted water or soil.

[0003] A considerable portion of chlorinated organic compounds are listed as environmental priority pollutants, especially persistent organic pollutants, such as DDT, HHH, PCBs, polychlorinated phenols, vinyl chloride (VC), etc. Biological metabolism, photodegradation, chemical decomposition, etc. have strong resistance. Once discharged into the environment, it is di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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