Novel resene-based nanocomposite and preparation method, regeneration method and application thereof

Abstract

The invention discloses a novel resene-based nanocomposite and a preparation method, a regeneration method and an application thereof, which belongs to the field of an environment functional material. The skeleton of the composite material is macroporous styrene-divinylbenzen copolymerization sphere, active chlorine is subjected to covalent combination on the skeleton, and the nano hydration iron oxide or nano hydration zirconia particles are uniformly distributed in the apertures. The specific surface area of the nanocomposite is 10-80 m<2> / g, the active chlorinity is 0.2-1.5 mmol / g, the mass fraction of Fe / Zr element is 5-25%, and the size of the nano particle is 5-100 nm. Through the steps of annular amide modification-in-situ deposition-chlorination, integration of oxidation function and adsorption function is realized, neighborhood oxidation-adsorption of trivalent arsenic is realized, the resene-based nanocomposite has the advantages of high oxidation capacity, high adsorption selectivity, protrude deep purification performance for trivalent arsenic, and stable regeneration, and can effectively increase the deep processing level of trivalent arsenic in underground water.

Description

technical field

[0001] The invention belongs to the field of environmental functional materials, and more specifically relates to an oxidized resin-based nanocomposite material for efficiently removing arsenic in water, a preparation method, a regeneration method and application. Background technique

[0002] Arsenic pollution in water bodies is widespread all over the world, and it is one of the major hidden dangers threatening human water safety. Due to the high toxicity of arsenic, both the World Health Organization and my country have stipulated that the safe concentration in drinking water is below 10 μg / L. There are two main types of arsenic in natural water, namely trivalent arsenic and pentavalent arsenic. Arsenic pollution in water is mainly caused by geological factors. It is mostly distributed in reducing environments such as groundwater, and trivalent arsenic is often the dominant form. Studies have shown that the toxicity of trivalent arsenic is much greater t...

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