The Nd(III)extraction in flat renewal supported liquid membrane(FRSLM),with polyvinylidene fluoride membrane and renewal solution including HNO3 solution as the stripping solution and di(2-ethylhexyl)phosphoric acid(D...The Nd(III)extraction in flat renewal supported liquid membrane(FRSLM),with polyvinylidene fluoride membrane and renewal solution including HNO3 solution as the stripping solution and di(2-ethylhexyl)phosphoric acid(D2EHPA)dissolved in kerosene as the membrane solution,was investigated.The effects of pH in the feed phase,volume ratio of membrane solution to stripping solution,concentra-tion of HNO3 solution and concentration of carrier in the renewal phase on extraction of Nd(III)were also studied,respectively.As a result,the optimum extraction conditions of Nd(III)were obtained when concentration of HNO3 solution was 4.00 mol/L,concentration of D2EHPA was 0.100 mol/L,and volume ratio of membrane solution to stripping solution was 1.00 in the renewal phase,and pH was 4.60 in the feed phase.When initial concentration of Nd(III)was 2.00×10-4 mol/L,the extraction percentage of Nd(III)was up to 92.9%in 75 min.展开更多
基金Project supported by the National Natural Science Foundation of China for Young Scientists(51109197)Foundation for Planning Project of West Action of Chinese Academy of Sciences(KZCX2-XB2-13)Research Fund for Excellent Doctoral Thesis of Xi'an University of Technology(602-210805)
文摘The Nd(III)extraction in flat renewal supported liquid membrane(FRSLM),with polyvinylidene fluoride membrane and renewal solution including HNO3 solution as the stripping solution and di(2-ethylhexyl)phosphoric acid(D2EHPA)dissolved in kerosene as the membrane solution,was investigated.The effects of pH in the feed phase,volume ratio of membrane solution to stripping solution,concentra-tion of HNO3 solution and concentration of carrier in the renewal phase on extraction of Nd(III)were also studied,respectively.As a result,the optimum extraction conditions of Nd(III)were obtained when concentration of HNO3 solution was 4.00 mol/L,concentration of D2EHPA was 0.100 mol/L,and volume ratio of membrane solution to stripping solution was 1.00 in the renewal phase,and pH was 4.60 in the feed phase.When initial concentration of Nd(III)was 2.00×10-4 mol/L,the extraction percentage of Nd(III)was up to 92.9%in 75 min.
