Retardation capacity of organophilic bentonite for anionic fission products

摘要

Sorption and diffusivity of iodide and pertechnetate (I~- and TcO_4) on MX-80 bentonite with different hexadecylpyridinium (HDDPy~+) loadings were studied usig equilibrium solutions of different ionic strengths. In HDPy -modified bentonite, iodide and pertechnetate ions exhibited increasing sorption (characterized by the distribution ratio, R_d), while Cs~+ and Sr~2+ showed decreasing sorption with increasing organophilicity.