Dispersing method for zero-valent iron

A zero-valent iron, dispersion technology, applied in the field of environmental engineering and environmental geotechnical engineering, can solve the problems of high cost of dispersants, easy oxidation, easy aggregation of zero-valent iron particles, etc., to achieve low price, increase consistency, and reduce usage volume effect
CN107350469AActive Publication Date: 2017-11-17SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2017-11-17

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Abstract

The invention discloses a dispersing method for zero-valent iron, and belongs to the technical field of environmental engineering and environmental geotechnics. A dispersing agent is formed by mixing alkyl glycoside, guar gum and xanthan gum according to a certain proportion, and a good dispersing effect is shown for nano zero-valent iron and micron zero-valent iron. The dispersed and modified nano zero-valent iron can be applied to restoration of polluted underground water, and the dispersed and modified micron zero-valent iron can be applied to restoration of polluted soil.
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Description

technical field

[0001] The invention belongs to environmental engineering and environmental geotechnical engineering, and specifically relates to a method for dispersing zero-valent iron, which can effectively improve the migration and dispersion performance of zero-valent iron in groundwater and soil, and is suitable for pollution by heavy metals and chlorinated organic substances In-situ remediation of groundwater and soil. technical background

[0002] Zero-valent iron is simple iron, which can be divided into nano-scale zero-valent iron (0-200nm) and micron-scale zero-valent iron (1-2um). It has strong reactivity and is widely used in groundwater polluted by heavy metals and chlorinated organic substances. and soil restoration. However, in engineering applications, because 1. The surface of zero-valent iron particles has accumulated a large amount of positive and negative charges; 2. The specific surface area of ​​zero-valent iron particles is large, the surface energy ...

Claims

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