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Modified, fine-particle, water-insoluble aziridine polymer and use therefore for removing heavy metals from aqueous solution
Modified, fine-particle, water-insoluble aziridine polymer and use therefore for removing heavy metals from aqueous solution
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机译:改性的细颗粒,水不溶性氮丙啶聚合物,因此可用于从水溶液中去除重金属
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摘要
Process for preparing fine-particle, water-insoluble polymers of aziridines by polymerizing aziridines, preferably ethylenimine, in the presence of crosslinkers which contain at least two functional groups, and in at least one ether, and also modified, water-insoluble polymers of aziridines which can be obtained by reacting fine-particle, water- insoluble, crosslinked polymers of aziridines, in aqueous medium, with carbon disulfide or formaldehyde and a nucleophilic agent from the group consisting of alkali metal cyanides, primary amines, secondary amines, alkali metal sulfites and alkali metal phosphites, and use of the modified and non-modified fine-particle, water-insoluble polymers for immobilizing active compounds, as absorbents for aldehydes, ketones and acids, and also for removing heavy metal ions from wastewaters.
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