Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

Authors

DOI:

https://doi.org/10.3989/gya.0216171

Keywords:

Bio-electrochemical system, COD removal, Electricity generation, Electron donor, Olive oil washing waters

Abstract


Olive oil washing water derived from the two-phase manufacturing process was assessed as an electron donor in a bio-electrochemical system (BES) operating at 35 ºC. Start-up was carried out by using acetate as a substrate for the BES, reaching a potential of around +680 mV. After day 54, BES was fed with olive oil washing water. The degradation of olive oil washing water in the BES generated a maximum voltage potential of around +520 mV and a Chemical Oxygen Demand (COD) removal efficiency of 41%. However, subsequent loads produced a decrease in the COD removal, while current and power density diminished greatly. The deterioration of these parameters could be a consequence of the accumulation of recalcitrant or inhibitory compounds, such as phenols. These results demonstrated that the use of olive oil washing water as an electron donor in a BES is feasible, although it has to be further investigated in order to make it more suitable for a real application.

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References

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Published

2017-06-30

How to Cite

1.
Fermoso FG, Fernández-Rodríguez MJ, Jiménez-Rodríguez A, Serrano A, Borja R. Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system. Grasas aceites [Internet]. 2017Jun.30 [cited 2024Mar.28];68(2):e198. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1665

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Research