Preparation method and application of a vascular plant-based porous oxidative polymeric chelate adsorption material

A technology of oxidative polymerization and chelation adsorption, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc. Good hydrophilic effect
CN105664864BActive Publication Date: 2018-05-01CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2018-05-01

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Abstract

The invention discloses a preparation method and application of a vascular plant based porous oxidative polymerization chelating adsorption material. The adsorption material takes a porous vascular plant as the carrier, and is grafted with a lot of amidoxime groups. The preparation method includes: subjecting the vascular plant to oxidation treatment, then conducting coupling with a double-bond equipped silane coupling agent, then carrying out free radical polymerization reaction with acrylonitrile under the action of an initiator, and finally converting part of a nitrile group into an amidoxime group through hydroxylamine, thus obtaining the adsorption material. The adsorption material has strong hydrophilicity, abundant porous structure and numerous amidoxime groups, and can be applied to removal of heavy metals or radioactive metallic elements from wastewater. The adsorption material shows the characteristics of high adsorption capacity, strong adsorption ability, reproducibility and reusability, and good reuse effect, and is especially suitable for adsorption removal of lead, cadmium, uranium and other metals from wastewater.
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Description

technical field

[0001] The invention relates to a preparation method and application of a vascular plant-based porous oxidative polymerization chelating adsorption material, in particular to the preparation of a new type of plant by using vascular plants as carriers to carry out oxidation, surface activation, grafting and polymerization. Oxidation-based polymer materials, mainly used in the adsorption of heavy metal ions and radioactive elements in water and soil; belong to the field of natural organic polymer modification. Background technique

[0002] The hazards of heavy metals are well known. Heavy metal elements in water and soil enter the ecological environment and food chain through migration and transformation, thereby endangering organisms and human health. Secondly, the radioactive element uranium has an irreplaceable position in national defense security and national economy. Adjusting the energy structure and reducing carbon emissions have brought unprecedented ...

Claims

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