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首页> 外文期刊>Separation and Purification Technology >Vanadium(V)ions transport through tri-n-octyl amine cyclohexane supported liquid membranes
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Vanadium(V)ions transport through tri-n-octyl amine cyclohexane supported liquid membranes

机译：钒（V）离子通过三正辛胺环己烷负载的液膜传输

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摘要

The transport study of V(V)ions through supported liquid membranes(SLM),based on tri-n-octyl amine(TOA)as carrier in cyclohexane diluent,supported in polypropylene hydrophobic micro-porous film has been carried out.The effect of concentration of HC1,V(V)ions(in feed)and TOA(in membrane)has been investigated.Three different stripping reagents,H2O,HNO3(0.1-1 M)and Na2CO3(0.188-0.94 M),have been used to determine their effect on V(V)ions transport.Increase in the HCl concentration leads to an increase of the amount of V(V)ions extracted in the organic phase.However,beyond a concentration of 2 M HCl it decreases.Similarly,increase in the TOA concentration leads to an increase of the amount of V(V)ion extracted in the organic phase but beyond 30% it decreases.Increase in the V(V)ions concentration in the feed,leads to an increase in the flux across the membrane.In addition,out of the three strippents used it was found that HNO3 was the best of these.The species involved for transport across the membrane is R3NH VO2Cl2.The mechanism of transport is coupled co-ions transport with H+ and Cl- coupled ions.
机译：以三正辛胺（TOA）为载体，在环己烷稀释液中，通过聚丙烯疏水微孔膜负载了V（V）离子通过负载液膜（SLM）的迁移研究。研究了进料中HC1，V（V）离子和膜中TOA的浓度。使用了三种不同的汽提试剂H2O，HNO3（0.1-1 M）和Na2CO3（0.188-0.94 M）确定它们对V（V）离子迁移的影响.HCl浓度的增加会导致有机相中提取的V（V）离子的量增加。但是，超过2M HCl的浓度会降低。 TOA浓度的增加导致有机相中提取的V（V）离子的量增加，但超过30％则会减少。进料中V（V）离子的浓度增加导致跨过的通量增加此外，在使用的三种带状废料中，发现HNO3是其中最好的。迁移机理是共离子与H +和Cl耦合离子的迁移。

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