Add time:09/28/2019         Source:infona.pl

The complex formation between Se(IV) and Na(DDTC) has been exploited to carry out the transport of selenite through an SSLM. The differences of solubilities of the related complex in aqueous and in organic kerosene solution along with the additional effect of H 2 O 2 have provided the conditions for such transport.In this case, the study reveals that transport of selenite is effectively facilitated by DDTC. It has been determined that the concentration of HCl in the stripping solution has an optimum value around 2.0 M. The presence of H 2 O 2 in the stripping solution is necessary to accomplish the mass transfer of selenite. The role of this reagent has been investigated.The transport has shown to be selective for Se(IV) and Cu 2 + in the presence of Mg 2 + , Fe 3 + and Ca 2 + .

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