亚铁氰化钾钛从模拟高放废液中去除Cs^＋冷实验研究

INACTIVE EXPERIMENT ON REMOVAL Cs￣+ FROM SIMULATED HLLW BY POTASSIUM TITANIUM HEXACYANOFERRATE

研究了无机离子交换剂亚铁氰化钾钛从模拟高放废液中去除Ｃｓ的双柱串级冷实验。结果表明：当模拟废液中Ｃｓ的质量浓度为０．５０ｇ／ｌ、酸浓度为１．１０ｍｏｌ／ｌ、流速为２．７０ｍｌ／ｈ、柱Ⅰ的穿透率大于９０％时，干交换剂的交换容量为０．７４５ｍｍｏｌ／ｇ，柱Ⅱ的穿透率为１％时，双柱中干交换剂总的交换容量为０．６４０ｍｍｏｌ／ｇ。

Removal of Cs from simulated HLLW by an inorganic ion exchanger, potassium titanium hexacyanoferrate ,is studied. The results show that potassium titanium hexacyanoferrate as ion exchanger can be used for removal of Cs ￣+ from simulated HLLW, The exchange capacity of Cs ￣+for dried exchanger for the column Ⅰ over the breakthrough of 90% is 0.745mmol/g when Cs ￣+concentration of feed is 0.50g/l,feed aciditity is 1.10mol/l and the flow rate is 2.70ml/h(2.03bed volumes/h).The exchange capacity for dried exchanger of two-colunms on the same conditions is 0.640mmol/g at the breakthrough of 1% in the column Ⅰ.