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Adsorption of ~(134)Cs from aqueous solution by zinc fcrrocyanide,and the effect of experimental conditions on the adsorption were investigated.Preliminary results showed that zinc ferrocyanide was very efficient as an absorbent.Over 98% of ~(134)Cs could be removed by zinc ferrocyanide of 0.33 g·L~(-1) from ~(134)Cs solution (Co) of 3.2～160.0 kBq·L~(-1),with adsorption capacities (Q) of 9.6～463.0 kBq·g~(-1).The adsorption equilibrium time was within one hour and the suitable pH ranged 1～10.No significant differences on ~(134)Cs adsorption were observed at 0～50℃,or in solutions containing Ca~(2+),Fe~(3+),Mg~(2+),HCO_3~-,CO_3~(2-),Cl and SO_4~(2-),even though they are 1000 times higher than the anions or cations in groundwater.However,the adsorption rates decreased when solutions contained K~+ or Na~+.The adsorption process could be described by Frcundlich and Langmuir adsorption equations.
Adsorption of ~ (134) Cs from aqueous solution by zinc fcrrocyanide, and the effect of experimental conditions on the adsorption were investigated. Preliminary results showed that zinc ferrocyanide was very efficient as an absorbent. O 98% of ~ (134) Cs could be removed by zinc ferrocyanide of 0.33 g · L -1 from ~ (134) Cs solution (Co) of 3.2 ~ 160.0 kBq · L -1 with adsorption capacities (Q) of 9.6 ~ 463.0 kBq · g ~ (-1). The adsorption equilibrium time was within one hour and the suitable pH ranged 1 ~ 10.No significant differences on ~ (134) Cs adsorption were observed at 0 ~ 50 ℃, ), Fe ~ (3 +), Mg ~ (2 +), HCO_3 ~ -, CO_3 ~ (2 -), even though they are 1000 times higher than the anions or cations in groundwater The adsorption rates could be described by Frcundlich and Langmuir adsorption equations.