论文部分内容阅读
在无任何添加剂的情况下,以2-甲基-8-羟基喹啉为螯合剂,考察了时间(10～90 min),温度(313～343K),压力(10～25 MPa),螯合物与金属的摩尔比(50︰1～200︰1)等因素对8种金属离子(Cu2+,CO2+,Ni2+,Fe3+,Pb2+,Cd2+,Mn2+,Zn2+)萃取效率的影响.结果表明,螯合物对Cu2+萃取效率最高,在最佳条件下(323 K,30 min,25 MPa,螯合物与金属离子的摩尔比为200︰1)达88.23%.而在同一萃取体系中,8种金属离子的萃取常数(Kex)随着萃取效率的增加而增加.
In the absence of any additives, the time (10 ~ 90 min), temperature (313 ~ 343K), pressure (10 ~ 25 MPa) (Cu2 +, CO2 +, Ni2 +, Fe3 +, Pb2 +, Cd2 +, Mn2 +, Zn2 +) on the molar ratio of metal to metal (50︰1 ~ 200︰1) .The results showed that the chelate The extraction efficiency of Cu2 + was the highest, which was 88.23% under the optimum conditions (323 K, 30 min, 25 MPa, the molar ratio of chelate to metal ions was 200︰1), while in the same extraction system, eight kinds of metal ions The extraction constant (Kex) increases with the extraction efficiency.