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Bioelectrochemical Characterization of Heavy Metals Resistant yeast: Hansenula fabianii Isolated from Tannery Wastewater

Elabed, Alae and Ezziat, loubna and Ibnsouda, Saad and Elabed, Soumya and Erable, Benjamin Bioelectrochemical Characterization of Heavy Metals Resistant yeast: Hansenula fabianii Isolated from Tannery Wastewater. (2020) International Journal of Electrochemical Science, 16. 140128. ISSN 1452-3981

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Official URL: https://doi.org/10.20964/2021.01.31

Abstract

To date, heavy metals present a main drawback for bioelectrochemical systems (BESs) performances. Therefore, our results confirm, for the first time, that Hansenulafabianii is an electrochemical active yeast that has a potential tolerance against various heavy metals. The bioreactor inoculated by Hansenula fabianii in mediatoless conditions provided a maximum current density of 32 mA/m²; up to 300 mA/m² in the presence of methylene blue. In mediatorless conditions, cyclic voltammetry (CV) on a yeast pellet showed a single oxidative peak at 450mV and a pair peak, the CV of the supernatant confirmed that Hansenula fabianii secretedits own mediator. The obtained results proved that Hansenula fabianii based biofuel cell could be used for simultaneous current generation and heavy metal bioremediation.

Item Type:Article
HAL Id:hal-03342534
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université Sidi Mohamed Ben Abdellah - USMBA (MOROCCO)
Laboratory name:
Funders:
Volubilis
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Deposited On:13 Sep 2021 12:03

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