Influence of humic substances on the 63Ni migration through crushed rock media

Autor: Tanaka, Tadao, Sakamoto, Y., Mukai, M., Maeda, T., Nakayama, S.
Zdroj: Radiochimica Acta; November 2004, Vol. 92 p725-729, 5p
Abstrakt: Column experiments were performed to study effects of humic acid on the mobility of 63Ni(II) through crushed granite media. The 63Ni concentration passing the column increased with increasing the concentration of humic acid. The migration behavior of 63Ni, either retarded or non-retarded, could not be simulated by the widely-accepted, instantaneous equilibrium sorption model. The rate limited transformation model, taking into account non-equilibrium complexation of 63Ni with humic acid facilitates the description of the observed migration behavior of 63Ni.
Databáze: Supplemental Index