摘要
将ＴＢＰ固定于多孔载体上，用于萃取硝酸水溶液中的钍。实验表明，萃取分配比高，萃取容量大，能有效地防止乳化现象。将ＴＢＰ柱填料制备成填充柱，对含Ｔｈ￣４＋，Ｆｅ￣３＋和Ｃｅ￣３＋的铁钍渣浸出液进行萃取实验得出：当溶液硝酸浓度为４ｍｏ１／１，接触时间为１０ｍｉｎ时，萃余液中Ｔｈ￣４＋浓度小于０．０１ｍｇ／１。ｌｇＴＢＰ柱填料可萃取钍０．２５ｇ，反萃液中钍浓度为６２．５ｇ／１，Ｆｅ￣３＋和Ｃｅ￣３＋的含量均小于０．１ｍｇ／１。
Tributyl phosphate(TBP)is fixed onto porous carrier.And the TBP column filling is used in extraction of Th￣4+ in ni-tric acid solution. The results show that the TBP column filling has high extractive efficiency to the Th￣4+ ion. It is available to pre-vent he water and TBP from emulsification,The TBP columu filling is filled in to a column and used for extraction of the Th￣4+ ionfrOm 4 mol/1 HNO_3 solution with Fe￣3+and Ce￣3+ ions .Whe contact time is l0 min,the Th￣4+ concentration in the extraction raffi-nate is lower than 0.01 mg/1,and the extraction capacity is about 250mg·g￣-1.The ion concentrations in the strip liquor are:Th￣4+62.5 g/1,both Fe￣3+ and Ce￣3+ less than 0.1 mg/1.
出处
《四川环境》
北大核心
1995年第3期8-11,共4页
Sichuan Environment
