Transport Facilité du Phénol à travers une Membrane Liquide Supportée contenant l’extractant solvatant le Trioctylphosphine Oxyde (TOPO)

2019 
Abstract: The present study focuses on the removal of phenol (PhOH) present in aqueous solutions using a supported liquid membrane (SLM) composed of a thin crosslinked sheet of polydimethylsiloxane (PDMS) containing the carrier trioctylphosphine oxide (TOPO) diluted in octane. The transfer conditions of PhOH through the SLM were optimazed. The diffusion flux (J), the permeability (P) and the diffusion coefficient (Ddiff) of the complexed species were determined. Speciation of PhOH species in the supported organic membrane phase (extractant) was also performed using derived theoretical equations to elucidate the stoichiometry and PhOH transport mechanism through the SLM. Thus, the optimal conditions of PhOH transport found are:  in the receiving solution, , . Thus, 90% of phenol is removed. For against, only about 16% of phenol was able to cross the SLM with a diffusion flux J of the order of  and a coefficient of diffusion corresponding to . Resume: La presente etude porte sur l'elimination du phenol (PhOH) present dans les solutions aqueuses en utilisant une membrane liquide supportee (MLS) composee d'une fine feuille reticulee de polydimethylsiloxane (PDMS) contenant l’extractant-transporteur l'oxyde de trioctylphosphine (TOPO) dilue dans l'octane. Les conditions de transfert des PhOH a travers la MLS ont ete optimises. Le flux de diffusion (J), la permeabilite (P) et le coefficient de diffusion (D diff ) des especes complexees ont ete determines. La speciation des especes de PhOH dans la phase membranaire supportee a egalement ete realisee en s’appuyant sur les equations theoriques derivees pour elucider la stœchiometrie et le mecanisme de transport des PhOH a travers la MLS. Ainsi, les conditions optimales de transport des PhOH trouvees sont : dans la solution receptrice, ,  . Ainsi,90% de phenol sont elimines. Par contre, seuls environ 16% de phenol ont pu traverser la MLS avec un flux de diffusion  et un coefficient de diffusion .
    • Correction
    • Source
    • Cite
    • Save
    • Machine Reading By IdeaReader
    0
    References
    0
    Citations
    NaN
    KQI
    []