Use of some calixarenes as cleaning agents for low radioactive contaminated waters

Abstract

In order to clean some low radioactive contaminated waters containing ~+y-active cations (55+59Fe3+, 6~ 65Zn2 § and 137Cs+), calix[4]arene and p-(tert-butyl)calix [4]arene have been used. Experiments have been performed in the absence of ionic competition, at 4~ 22~ and 40~ Whatever the temperature and the sorbent used, the yield of retaining the ~ § cations varies as follows: 55+59Fe3+ > 6~ >_ 65Zn2+ > 137Cs+.

Asymmetric calixarene derivatives as potential hosts in chiral recognition processes

“…Thus they have been employed in environmental technology as absorbers of heavy metals such as uranium and mercury [26], and they have found applications as extractants of organic molecules coordinated to precious metals [27,28] or rare earths [29,30]. They are capable of separating the Buckminsterfullerenes C 60 and C 70 [31].…”