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Journal of the Mexican Chemical Society

Print version ISSN 1870-249X


CERCADO, Bibiana et al. Carbonaceous and Protein Constituents in Dairy Wastewater Lead to a Differentiated Current Generation in Microbial Fuel Cells (MFCs). J. Mex. Chem. Soc [online]. 2014, vol.58, n.3, pp.309-314. ISSN 1870-249X.

The effect of real dairy wastewater (DWW) additions on the current density generated by a bioanode was evaluated in a half cell configuration under potentiostatic control, thus simulating the anodic chamber of a Microbial Fuel Cell. Low substrate additions increased current density up to 1655 ± 136 mA m−2, forming a two-current peak pattern. Then the system was tested with a casein-lactose synthetic media. A high protein concentration reduced the current density; individual compounds led to the highest current (330.5 mA m−2 with casein; 1276 mA m−2 with lactose). Moreover, the protein reduced the current start up time.

Keywords : Microbial fuel cell; dairy wastewater; bioanode; current density; casein; lactose.

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