Study on liquid-solid extraction flotation separation of mercury (Ⅱ) by the system of ammonium sulfate– potassium iodide-cetyl pyrinium bromide-water
The liquid-solid extraction flotation separation behaviours of mercury (￠ò) from other metal ions using the system of ammonium sulfate-potassium iodide-cetylpyrinium bromide-water was studied. The results showed that with the amount of 1.5 mL of the solution of 0.1 mol/L KI and 1.0 mL of the solution of 1.0×10 -3 mol/L cetylpyrinium bromide (CPB), the ternary association complex of KI-CPB-Hg floated above the salt-water phase and formed two phases with clear interface in the presence of 1.0g (NH4)2SO4. In this condition Zn 2+, Mn 2+, Ni 2+,Co 2+, Fe 2+, Al 3+ could not be extraction floated and Hg 2+ could be extraction floated quantitatively at pH7.0. The method has been used for the extraction flotation separation of Hg 2+ in synthetic water sample and the results were satisfactory.
mercury (Ⅱ) Flotation separation Ammonium thiocyanate Cetyl pyrinium bromide
Changqing Tu Xinrong Wen
Department of Chemistry, Jiaying University, Meizhou, 514015 P.R.China
国际会议
The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)
北京
英文
2007-10-14（万方平台首次上网日期，不代表论文的发表时间）