POWDERY CHELATE-TRAPPING MATERIAL, PROCESS FOR PRODUCING THE SAME, AND METHOD OF TRAPPING ION WITH THE TRAPPING MATERIAL

摘要

A powdery chelate-trapping material having, incorporated in the molecule thereof, chelate-forming functional groups which comprise acyl groups, etc. and are represented by general formula (1) wherein R1, R2, and R3 each represents lower alkylene, and n is an integer of 1 to 4. The chelate-trapping material has the excellent ability to trap metal or semimetal ions or compounds thereof contained in aqueous or oily liquids or in various discharge gases. Existing facilities can be used for the trapping treatment with the trapping material. The trapping material can be easily subjected to thermal disposal, etc. It can be inexpensively produced by a simple and safe method.