Phenol degradation in bio-electrochemical cells

Hen Friman; Alex Schechter; Yeshayahu Nitzan; Rivka Cahan

doi:10.1016/j.ibiod.2012.04.019

Phenol degradation in bio-electrochemical cells

Hen Friman, Alex Schechter, Yeshayahu Nitzan, Rivka Cahan

The Mina and Everard Goodman Faculty of Life Sciences

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

Abstract

A bio-electrochemical cell (BEC) was constructed as a typical two-chamber microbial fuel cell (MFC), except that it was operated under external voltage instead of constant resistance as in an MFC. The anode chamber contained a pure culture of Cupriavidus basilensis grown in a medium containing phenol as the sole carbon source. Operating the BEC under an external voltage of 125mV led to an increase in bacterial cell growth to 0.53OD_{600 nm}, while the control (open circuit potential) BEC reached only 0.24OD. The total dry weight of the bacterial cells in the poised potential BEC was 48% higher than in the control BEC. The peak current generated in the poised potential BEC was 478mAm^-2. The level of residual phenol in the control potential BEC was between 47% and 78% higher than that in the poised potential BEC. The rate of phenol degradation as a function of 0.1OD was about 0.36mg phenoll^-1h^-1. Cyclic voltammetry examination at the end of the experiment demonstrated an oxidation peak above-0.06V. In conclusion, operating the BEC at 125mV enabled growth of a pure culture of C.basilensis, current formation, and phenol degradation even in an oxygen-limited environment.

Original language	English
Pages (from-to)	155-160
Number of pages	6
Journal	International Biodeterioration and Biodegradation
Volume	84
DOIs	https://doi.org/10.1016/j.ibiod.2012.04.019
State	Published - Oct 2013

Bibliographical note

Funding Information:
This research was supported in part by the Samaria and Jordan Rift Valley Regional R&D Center , the Research Authority of the Ariel University Center , and the Rappaport Foundation for Medical Microbiology, Bar-Ilan University, Ramat-Gan, Israel (to Y.N.).

Funding

This research was supported in part by the Samaria and Jordan Rift Valley Regional R&D Center , the Research Authority of the Ariel University Center , and the Rappaport Foundation for Medical Microbiology, Bar-Ilan University, Ramat-Gan, Israel (to Y.N.).

Funders	Funder number
Rappaport Foundation for Medical Microbiology, Bar-Ilan University
Samaria and Jordan Rift Valley Regional R&D Center
Ariel University

Keywords

Bio-electrochemical cell
Cupriavidus basilensis
Phenol

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10.1016/j.ibiod.2012.04.019

Cite this

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title = "Phenol degradation in bio-electrochemical cells",

abstract = "A bio-electrochemical cell (BEC) was constructed as a typical two-chamber microbial fuel cell (MFC), except that it was operated under external voltage instead of constant resistance as in an MFC. The anode chamber contained a pure culture of Cupriavidus basilensis grown in a medium containing phenol as the sole carbon source. Operating the BEC under an external voltage of 125mV led to an increase in bacterial cell growth to 0.53OD600 nm, while the control (open circuit potential) BEC reached only 0.24OD. The total dry weight of the bacterial cells in the poised potential BEC was 48% higher than in the control BEC. The peak current generated in the poised potential BEC was 478mAm-2. The level of residual phenol in the control potential BEC was between 47% and 78% higher than that in the poised potential BEC. The rate of phenol degradation as a function of 0.1OD was about 0.36mg phenoll-1h-1. Cyclic voltammetry examination at the end of the experiment demonstrated an oxidation peak above-0.06V. In conclusion, operating the BEC at 125mV enabled growth of a pure culture of C.basilensis, current formation, and phenol degradation even in an oxygen-limited environment.",

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author = "Hen Friman and Alex Schechter and Yeshayahu Nitzan and Rivka Cahan",

note = "Funding Information: This research was supported in part by the Samaria and Jordan Rift Valley Regional R&D Center , the Research Authority of the Ariel University Center , and the Rappaport Foundation for Medical Microbiology, Bar-Ilan University, Ramat-Gan, Israel (to Y.N.).",

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AU - Schechter, Alex

AU - Nitzan, Yeshayahu

AU - Cahan, Rivka

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N2 - A bio-electrochemical cell (BEC) was constructed as a typical two-chamber microbial fuel cell (MFC), except that it was operated under external voltage instead of constant resistance as in an MFC. The anode chamber contained a pure culture of Cupriavidus basilensis grown in a medium containing phenol as the sole carbon source. Operating the BEC under an external voltage of 125mV led to an increase in bacterial cell growth to 0.53OD600 nm, while the control (open circuit potential) BEC reached only 0.24OD. The total dry weight of the bacterial cells in the poised potential BEC was 48% higher than in the control BEC. The peak current generated in the poised potential BEC was 478mAm-2. The level of residual phenol in the control potential BEC was between 47% and 78% higher than that in the poised potential BEC. The rate of phenol degradation as a function of 0.1OD was about 0.36mg phenoll-1h-1. Cyclic voltammetry examination at the end of the experiment demonstrated an oxidation peak above-0.06V. In conclusion, operating the BEC at 125mV enabled growth of a pure culture of C.basilensis, current formation, and phenol degradation even in an oxygen-limited environment.

AB - A bio-electrochemical cell (BEC) was constructed as a typical two-chamber microbial fuel cell (MFC), except that it was operated under external voltage instead of constant resistance as in an MFC. The anode chamber contained a pure culture of Cupriavidus basilensis grown in a medium containing phenol as the sole carbon source. Operating the BEC under an external voltage of 125mV led to an increase in bacterial cell growth to 0.53OD600 nm, while the control (open circuit potential) BEC reached only 0.24OD. The total dry weight of the bacterial cells in the poised potential BEC was 48% higher than in the control BEC. The peak current generated in the poised potential BEC was 478mAm-2. The level of residual phenol in the control potential BEC was between 47% and 78% higher than that in the poised potential BEC. The rate of phenol degradation as a function of 0.1OD was about 0.36mg phenoll-1h-1. Cyclic voltammetry examination at the end of the experiment demonstrated an oxidation peak above-0.06V. In conclusion, operating the BEC at 125mV enabled growth of a pure culture of C.basilensis, current formation, and phenol degradation even in an oxygen-limited environment.

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Phenol degradation in bio-electrochemical cells

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Keywords

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