INIQUI   05448
INSTITUTO DE INVESTIGACIONES PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Plasma deposition of silver nanoparticles on ultrafiltration membranes: antibacterial and antibiofouling properties
Autor/es:
CRUZ, MERCEDES CECILIA; WOLF, MARCUS; SCHMITTGENS, RALPH; CASTRO VIDAURRE, ELZA; RAJAL, VERONICA
Lugar:
Aachen
Reunión:
Conferencia; 6th IWA Specialist Conference on Membrane Technology for water and wastewater treatment; 2011
Institución organizadora:
International Water Association
Resumen:
Trabajo aceptado para su presentación en formato poster.Abstract: The use of membranes for water purification is increasing, yet the microbiological contamination (biofouling) of polymeric membranes and associated decrease in membrane flux reduce the efficacy of the process. Unwanted effects include increasing manufacturing and energy costs, destruction of membranes, reduction in operating life times, and secondary contamination of water by the metabolic products of microorganisms [1-3]. To reduce the incidence of biofouling, ultrafiltration membranes have been synthesized with silver nanoparticles (Ag-NP) in their matrix [1-4]. In this work a new vacuum-based method for nanocomposite thin film fabrication [5-7] is used to deposit Ag-NP on the membrane surface. Commercial membranes were activated with low temperature plasma with different gases (Ar and O2), then a thin polymer film of Poly(methyl metacrylate) (PMMA) was deposited by plasma-enhanced chemical vapour deposition (PECVD) and finally subjected to silver nanoparticle deposition by gas flow sputtering (GFS). These modifications were made to pursue the final objective of improving the efficiency of the water disinfection process and develop membrane systems that are less susceptible to biofouling due to the bactericidal activity of the deposited Ag-NP.