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In  this  paper,  the  solvent  extraction  of  molybdenum  from 0.01-1 M aqueous hydrochloric  acidusing  tri-octyl  phosphine  oxide  (TOPO) as solvent diluted  with  n-hexane  has  been  investigated. The  extraction  efficiencies  of  TOPO  inthe  extraction  of molybdenum  werecarried  out using  conventional extraction  and  microwave-assisted extraction  (MAE)  techniques.Molybdenum  extraction  efficiency  wasdetermined  by varying  separately  the  different  parameters  affecting  the  extraction  process  including agitationtime,  hydrochloric  acid  concentration, solventconcentration (in  the  organic phase),  as  well  as  the irradiation  time  and microwave  power.The MAE  technique greatly   enhanced   the   solvent   extraction   of   molybdenum   where   high   extraction percentageswere obtained under favorable conditions. In some cases, thepercentages extraction  of  molybdenum obtained  with  two  methods  were  comparable.The  use  of MAE technique also  showed  obvious  advantages  in  terms  of  a  drastic  reduction  of  the extraction time as it was shortened from 15 min to 10 s in comparison with conventional solvent extraction method.

lebanese science journal

Solvent Extraction of Molybdenum from Hydrochloric Acid Solutions with Tri-Octyl Phosphine Oxide: Comparison between Conventional and Microwave-Assisted Extraction Techniques