Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2117/27553

Profiling of oxygen in biofilms using individually addressable disk microelectrodes on a microfabricated needle
Moya, Ana; Guimerà Villalba, Xavier; Del Campo, Francisco Javier; Prats-Alfonso, Elisabet; Dorado Castaño, Antonio David; Baeza Labat, Mireia; Villa, Rosa; Gabriel, David; Gamisans Noguera, Javier; Gabriel, Gemma
Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera i Recursos Naturals; Universitat Politècnica de Catalunya. TRAGASOL - Grup de Tractament Biològic de Contaminants Gasosos i Olors
A novel microelectrode array sensor was fabricated using MEMS technology on a needle, and then applied to real-time measurement of dissolved oxygen (DO) inside biofilms. The sensor consists of eleven gold disk microelectrodes and a rectangular auxiliary electrode along them and an external & internal reference electrode. Three kinds of sensors were designed and their responses were characterized and evaluated under various environmental conditions. The arrays exhibit a linear response to DO in the 0 - 8 mg L-1 concentration range in water, high sensitivity, repeatability, and low limits of detection (< 0.11 mg L-1) and quantification (0.38 mg L-1). The sensors were then validated against a commercial Clark-type microelectrode and applied to profiling of DO in a heterotrophic biofilm cultivated in a flat-plate bioreactor. It is shown that the sensor array can provide a multipoint, simultaneous snapshot profile of DO inside a biofilm with high spatial resolution due to its micrometric dimensions. We conclude that this new sensor array represents a powerful tool for sensing of DO biofilms and in numerous bioprocesses.¿
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient
Àrees temàtiques de la UPC::Enginyeria química::Química analítica
Dissolved Oxygen
Microelectrode Array
Sensors
Bioprocess Monitoring
Biofilms
info:eu-repo/semantics/submittedVersion
Artículo
         

Mostrar el registro completo del ítem

Documentos relacionados

Otros documentos del mismo autor/a

Guimerà Villalba, Xavier; Moya, Ana; Dorado Castaño, Antonio David; Villa, Rosa; Gabriel, David; Gabriel, Gemma; Gamisans Noguera, Javier
Moya, Ana; Guimerà Villalba, Xavier; del Campo, F.J.; Prats-Alfonso, Elisabet; Dorado Castaño, Antonio David; Baeza, Mireia; Villa, R.; Gabriel, D.; Gamisans Noguera, Javier; Gabriel, G.
Guimerà Villalba, Xavier; Dorado Castaño, Antonio David; Bonsfills Pedrós, Anna; Gabriel, Gemma; Gabriel, David; Gamisans Noguera, Javier
Santos, Alfredo; Guimerà Villalba, Xavier; Dorado Castaño, Antonio David; Gamisans Noguera, Javier; Gabriel, David
Guimerà Villalba, Xavier; Dorado Castaño, Antonio David; Bonsfills Pedrós, Anna; Gabriel, D.; Gamisans Noguera, Javier