Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (4): 633-640.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Study on a novel disphase supplying supported liquid membrane for transport behavior of divalent nickel ions

PEI Liang1,2, WANG Liming2,3, GUO Wei3; ZHAO Nan2   

  1. 1 Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2 Faculty of Water Resources and Hydraulic Power, Xi'an University of Technology, Xi'an 710048, China 3 School of Chemical and Environmental Engineering, Xi'an Polytechnic University, Xi'an 710048, China
  • Received:2011-02-16 Revised:2011-08-20 Online:2011-08-20 Published:2012-08-28

两相更新支撑液膜中金属二价镍的迁移行为研究

裴亮1,2, 王理明2,3, 郭维3, 赵楠2   

  1. 1 Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2 Faculty of Water Resources and Hydraulic Power, Xi'an University of Technology, Xi'an 710048, China 3 School of Chemical and Environmental Engineering, Xi'an Polytechnic University, Xi'an 710048, China

Abstract: A novel disphase supplying supported liquid membrane (DSSLM), containing supplying feed phase and supplying stripping phase for transport behavior of Ni(II), have been studied. The supplying supported feed phase included feed solution and di(2-ethyhexyl) phosphoric acid (HDEHP) as the carrier in kerosene, and supplying stripping phase included HDEHP as the carrier in kerosene and HCl as the stripping agent. The effects of volume ratio of membrane solution to feed solution (O/F), pH, initial concentration of Ni(II) and ionic strength in the feed solution, volume ratio of membrane solution to stripping solution (O/S), concentration of H2SO4 solution, HDEHP concentration in the supplying stripping phase on transport of Ni(II), the advantages of DSSLM compared to the traditional supported liquid membrane (SLM), the system stability, the reuse of membrane solution and the reten-tion of membrane phase were studied. Experimental results indicated that the optimum transport of Ni(II) was ob-tained when H2SO4 concentration was 2.00 mol•L?1, HDEHP concentration was 0.120 mol•L?1, and O/S was 4︰1 in the supplying stripping phase, O/F was 1︰10 and pH was 5.20 in the supplying feed phase. The ionic strength in supplying feed phase had no obvious effect on transport of Ni(II). When initial Ni(II) concentration was 2.00×10?4 mol/L, the transport percentage of Ni(II) was up to 93.1 % in 250 min. The kinetic equation was deduced in terms of the law of mass diffusion and the interface chemistry.

Key words: disphase supplying supported liquid membrane, organic phosphonic acid, supplying feed phase, supplying stripping phase, nickel ion

摘要: A novel disphase supplying supported liquid membrane (DSSLM), containing supplying feed phase and supplying stripping phase for transport behavior of Ni(II), have been studied. The supplying supported feed phase included feed solution and di(2-ethyhexyl) phosphoric acid (HDEHP) as the carrier in kerosene, and supplying stripping phase included HDEHP as the carrier in kerosene and HCl as the stripping agent. The effects of volume ratio of membrane solution to feed solution (O/F), pH, initial concentration of Ni(II) and ionic strength in the feed solution, volume ratio of membrane solution to stripping solution (O/S), concentration of H2SO4 solution, HDEHP concentration in the supplying stripping phase on transport of Ni(II), the advantages of DSSLM compared to the traditional supported liquid membrane (SLM), the system stability, the reuse of membrane solution and the reten-tion of membrane phase were studied. Experimental results indicated that the optimum transport of Ni(II) was ob-tained when H2SO4 concentration was 2.00 mol•L?1, HDEHP concentration was 0.120 mol•L?1, and O/S was 4︰1 in the supplying stripping phase, O/F was 1︰10 and pH was 5.20 in the supplying feed phase. The ionic strength in supplying feed phase had no obvious effect on transport of Ni(II). When initial Ni(II) concentration was 2.00×10?4 mol/L, the transport percentage of Ni(II) was up to 93.1 % in 250 min. The kinetic equation was deduced in terms of the law of mass diffusion and the interface chemistry.

关键词: disphase supplying supported liquid membrane, organic phosphonic acid, supplying feed phase, supplying stripping phase, nickel ion