Carbonaceous and Protein Constituents in Dairy Wastewater Lead to a Differentiated Current Generation in Microbial Fuel Cells (MFCs)
Bibiana Cercado, Ana Laura Vega-Guerrero, Francisco Rodríguez-Valadez, José Luis Hernández- López +3
AI summary
70% confidenceDairy wastewater additions to MFCs increase current density, but protein concentration reduces it; casein and lactose have different effects on current generation.
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Open in lab →What they did
- System
- MFC
- Substrate
- real wastewater
What worked
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Abstract
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.
Key findings
- Low substrate additions increase current density up to 1655 ± 136 mA m⁻².
- High protein concentration reduces current density.
- Casein and lactose have different effects on current generation, with casein producing the highest current (330.5 mA m⁻²).
Keywords
Identifiers
- Journal
- Journal of the Mexican Chemical Society
- Year
- 2017