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Bioelectrogenesis with microbial fuel cells (MFCs) using the microalga Chlorella vulgaris and bacterial communities
Huarachi-Olivera, Ronald; Dueñas-Gonza, Alex; Yapo-Pari, Ursulo; Vega, Patricia; Romero-Ugarte, Margiht; Tapia, Juan; Molina, Luis; Lazarte-Rivera, Antonio; Pacheco-Salazar, D.G. & Esparza, Mario
Abstract
Background: Microbial Fuel Cell (MFC) technology is used in various applications such as wastewater treatment
with the production of electrical energy. The objective of this study was to estimate the biodepuration of oils and
fats, the elimination of blue dye brl and bioelectro-characterization in MFCs with Chlorella vulgaris and bacterial
community.
Results: The operation of MFCs at 32 d showed an increase in bioelectrogenic activity (from 23.17 to
327.67 mW/m2) and in the potential (from 200 to 954 mV), with biodepuration of fats and oils (95%) in the
microalgal cathode, and a removal of the chemical oxygen demand COD (anode, 71%, cathode, 78.6%) and
the blue dye brl (73%) at the anode, here biofilms were formed by the bacterial community consisting of
Actinobacteria and Deltaproteobacteria.
Conclusions: These findings suggest that MFCs with C. vulgaris and bacterial community have a simultaneous
efficiency in the production of bioelectricity and bioremediation processes, becoming an important source of
bioenergy in the future.
Keywords
Biodepuration; Bioelectrocharacterization; Biofilm; Chamber; Chlorophyll; Electrode; Fuel; Potential; Removal; Wastewater
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