Abstract
The present investigation focuses on the removal of Diclofenac (DCF) from aqueous solution by Fe2O3 nanoparticles stabilised emulsion nanofluid membrane (ENM) using n-heptane as solvent and Di-2-ethylhexyl phosphoric acid (D2EHPA) as carrier. Parameters like stripping phase (HNO3) concentration, homogenizer speed and hydrophilic-lipophilic balance were varied to achieve the maximum extraction of DCF. ENMs were characterized by photomicrograph and Turbiscan. Emulsion instability is the main hurdle for the application of emulsion liquid membrane technique on an industrial scale. The study also tries to address this issue. The study is novel in a way as the blending of Span 80 and Span 20 surfactants with Fe2O3 nanoparticles provided stability to emulsion and improved the DCF extraction to 97%. Nanoparticles are interfacially active which ensures better stability to the emulsion and improves the extraction efficiency.
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