| 摘要 |
PURPOSE:To obtain the titled material capable of scavenging an iodine compd. which scavenges iodine and methyl iodide at the same time contd. in a gas or a liquor by binding silver to an ion exchange fiber. CONSTITUTION:The ion exchange fiber is introduced a cation exchange group such as sulfonic acid group, etc., and a chelate group such as aminocarboxylic acid group, etc., to a base polymer such as polystyrene, etc. The silver is binded to said ion exchange fiber by treating with an aqueous solution of silver nitrate in >=0.01M an concn. and in an amount of >=0.5 times equivalent per an ion exchange capacity of the ion exchange fiber. The amount of silver contd. in the on exchange fiber is >=0.1meq/g on the dry weight based on the on exchange fiber. The form of said fiber is preferably a staple having about 0.1-3mm length in the case of scavenging iodine. The sheet like material made by using the staple is preferable in the case of applying it in the gas. The obtd. scavenging material is effectively used to the recovery of iodine from a natural gas, etc., and the removal of a radioactive iodine compd. contg. in a waste gas and a waste liquor coming from an atomic energy plant. |
