| abstract |
A metal chelate forming fiber wherein a reactive functional group of the molecule present on the surface has been substituted with an acyl group represented by general formula (1): a process for preparing the same; and a method of metal ion sequestration which comprises treating waste water with the fiber to permit metal ions contained therein to be captured by the acyl group, thereby removing the metal ions wherein R?1, R2, and R3¿ represent each a lower alkylene group and n is an integer of 1 to 4. |