Modified nanoscale zero-valent iron and preparation method and application thereof

A nano-zero-valent iron, modified technology, applied in transportation and packaging, metal processing equipment, etc., can solve the problem of the decrease in the mobility and activity of nano-zero-valent iron particles, reduce the adsorption sites of nano-zero-valent iron particles, and adversely affect nano-zero-valent iron particles. Solving problems such as the fluidity of valence iron particles, to achieve good application value, good stability efficiency, and improve the effect of dispersion effect
CN106891017AActive Publication Date: 2017-06-27HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV
Publication Date
2017-06-27

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Abstract

The invention discloses modified nanoscale zero-valent iron and a preparation method and application of the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron comprises rhamnolipid and nanoscale zero-valent iron. The surface of the nanoscale zero-valent iron is modified through the rhamnolipid, and the mass ratio of the rhamnolipid to the nanoscale zero-valent iron is 0.1-2:1. The preparation method comprises the steps that a rhamnolipid solution and a ferrous sulfate solution are mixed, and a NaHB4 solution is dropwise added for a reaction to obtain the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron has the advantages of being good in dispersing performance, good in stability, high in reaction activity, high in permeability and the like, has the good stabilization efficiency for metal lead in bottom mud, brings no secondary pollution to environment, has a good application value, and has the wide application prospect in the technical field of bottom mud heavy metal pollution treatment.
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Description

technical field

[0001] The invention belongs to the field of physical and chemical treatment of heavy metals in polluted bottom mud, and relates to a modified nano material and a preparation method thereof, in particular to a modified nano zero-valent iron, a preparation method and an application thereof. Background technique

[0002] Water body sediment is the main reservoir of pollutants in rivers or lakes, and it can also directly reflect the pollution history of water bodies. In recent years, the rapid development of my country's industry has caused many rivers to be seriously polluted by heavy metals, especially its sediment. The heavy metals in the sediment not only pollute the water body, endanger the benthic organisms of the river, but also have an impact on human life and production.

[0003] Lead is an important toxic pollutant in the environment. It can denature and inactivate active proteins in the brain, disrupt or stop related functional activities, and even ca...

Claims

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