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    Performance explorations of single chamber microbial fuel cells by using various microelectrodes applied to biocathodes

    Tag correlate

    #Accumulo #Celle a Combustibile

    pubblicazioni - Articolo

    Performance explorations of single chamber microbial fuel cells by using various microelectrodes applied to biocathodes

    In questo lavoro sono state eseguite misure di pH, redox, conducibilità e solfuri in prossimità del bio-catodo di una cella a combustibile microbica (MFC).

    Correlations among biofilm activity, chemistry and power production of membraneless, single chamber microbial fuel cells (MFC) were established using four microelectrodes. Each different (pH, redox, conductivity, S_2) microelectrode was assembled, calibrated and located close to the cathode. Power productivity of five MFCs was explained in terms of response of the microelectrodes. pH variation demonstrated that a proton gradient establishes within the cathodic biofilm, increasing acidity near the electrode.

    Conductivity increases inside the biofilm, proving low diffusion and increased ion concentration. Redox profiles provide a significant improvement to the understanding of the biochemical equilibria inside and outside the biofilm. Sulphide variations emphasize the role of the sulphur cycle in the MFC development. Diffusion hindrance seems the key-factor for the development of a biofilm and the establishment of a natural separation of the cell in cathodic and anodic compartments.

    Rif.RSE​

    14005962

    Destinazione​

    International Journal of Hydrogen Energy 39 (2014), pp. 21837-21846 , Luglio-2014

    Data Pubblicazione

    31 Dicembre 2014

    Autori​

    P. Cristiani, M. Bestetti "Politecnico di Milano", M. Grattieri "Politecnico di Milano", E. Guerrini "Università di Milano", S.P. Trasatti "Università di Milano"

    Tipo Pubblicazione

    Articolo

    Progetti

    Risparmio di energia elettrica nei settori: civile industria e servizi (EFFICIENZA2014)

    Tag correlate

    #Accumulo #Celle a Combustibile

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