A sandwiched denitrifying biocathode in a microbial fuel cell for electricity generation and waste minimization

A. Al-Mamun; O. Lefebvre; M. S. Baawain; H. Y. Ng

doi:10.1007/s13762-016-0943-1

A sandwiched denitrifying biocathode in a microbial fuel cell for electricity generation and waste minimization

A. Al-Mamun^*
, O. Lefebvre
, M. S. Baawain
, H. Y. Ng

^*Corresponding author for this work

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

35 Scopus citations

Abstract

A denitrifying biocathode in a microbial fuel cell was developed to investigate the replacement of the costly Pt-coated abiotic cathodes for electricity generation. The denitrifying biocathode was sandwiched between the dual-anode systems. The study investigated the performance for simultaneous treatment of wastewater on the anode, biological denitrification on the cathode and the potential recovery of electrical energy. Autotrophic biofilms performed denitrification on the cathode using supplied electrons by the biodegradation of organics on the anode. Graphite granules were used as electrodes for biofilm attachment, and nafion membranes were used as separators between electrodes. The system achieved a volumetric power of 7 ± 0.4 W m⁻³ net cathodic compartment (NCC) with the simultaneous removal of 229.5 ± 18 mg L⁻¹ COD on anode and 88.9 g m⁻³ NCC day⁻¹ nitrogen on cathode, respectively. The columbic efficiency for cathodic and anodic reactions was 98.9 ± 0.57 and 23.54 ± 0.87 %, respectively. This is a combined study for domestic wastewater treatment and biological denitrification in a compact MFC reactor. Further optimization of the system is desired to improve its performance and applicability.

Original language	English
Pages (from-to)	1055-1064
Number of pages	10
Journal	International Journal of Environmental Science and Technology
Volume	13
Issue number	4
DOIs	https://doi.org/10.1007/s13762-016-0943-1
State	Published - 1 Apr 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016, Islamic Azad University (IAU).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 7 Affordable and Clean Energy
SDG 12 Responsible Consumption and Production

Keywords

Autotrophic biofilms
Biocathode
Bioelectricity production
Biological denitrification
Microbial electrochemistry
Microbial fuel cell

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
General Agricultural and Biological Sciences

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10.1007/s13762-016-0943-1

Cite this

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title = "A sandwiched denitrifying biocathode in a microbial fuel cell for electricity generation and waste minimization",

abstract = "A denitrifying biocathode in a microbial fuel cell was developed to investigate the replacement of the costly Pt-coated abiotic cathodes for electricity generation. The denitrifying biocathode was sandwiched between the dual-anode systems. The study investigated the performance for simultaneous treatment of wastewater on the anode, biological denitrification on the cathode and the potential recovery of electrical energy. Autotrophic biofilms performed denitrification on the cathode using supplied electrons by the biodegradation of organics on the anode. Graphite granules were used as electrodes for biofilm attachment, and nafion membranes were used as separators between electrodes. The system achieved a volumetric power of 7 ± 0.4 W m−3 net cathodic compartment (NCC) with the simultaneous removal of 229.5 ± 18 mg L−1 COD on anode and 88.9 g m−3 NCC day−1 nitrogen on cathode, respectively. The columbic efficiency for cathodic and anodic reactions was 98.9 ± 0.57 and 23.54 ± 0.87 \%, respectively. This is a combined study for domestic wastewater treatment and biological denitrification in a compact MFC reactor. Further optimization of the system is desired to improve its performance and applicability.",

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AU - Lefebvre, O.

AU - Baawain, M. S.

AU - Ng, H. Y.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - A denitrifying biocathode in a microbial fuel cell was developed to investigate the replacement of the costly Pt-coated abiotic cathodes for electricity generation. The denitrifying biocathode was sandwiched between the dual-anode systems. The study investigated the performance for simultaneous treatment of wastewater on the anode, biological denitrification on the cathode and the potential recovery of electrical energy. Autotrophic biofilms performed denitrification on the cathode using supplied electrons by the biodegradation of organics on the anode. Graphite granules were used as electrodes for biofilm attachment, and nafion membranes were used as separators between electrodes. The system achieved a volumetric power of 7 ± 0.4 W m−3 net cathodic compartment (NCC) with the simultaneous removal of 229.5 ± 18 mg L−1 COD on anode and 88.9 g m−3 NCC day−1 nitrogen on cathode, respectively. The columbic efficiency for cathodic and anodic reactions was 98.9 ± 0.57 and 23.54 ± 0.87 %, respectively. This is a combined study for domestic wastewater treatment and biological denitrification in a compact MFC reactor. Further optimization of the system is desired to improve its performance and applicability.

AB - A denitrifying biocathode in a microbial fuel cell was developed to investigate the replacement of the costly Pt-coated abiotic cathodes for electricity generation. The denitrifying biocathode was sandwiched between the dual-anode systems. The study investigated the performance for simultaneous treatment of wastewater on the anode, biological denitrification on the cathode and the potential recovery of electrical energy. Autotrophic biofilms performed denitrification on the cathode using supplied electrons by the biodegradation of organics on the anode. Graphite granules were used as electrodes for biofilm attachment, and nafion membranes were used as separators between electrodes. The system achieved a volumetric power of 7 ± 0.4 W m−3 net cathodic compartment (NCC) with the simultaneous removal of 229.5 ± 18 mg L−1 COD on anode and 88.9 g m−3 NCC day−1 nitrogen on cathode, respectively. The columbic efficiency for cathodic and anodic reactions was 98.9 ± 0.57 and 23.54 ± 0.87 %, respectively. This is a combined study for domestic wastewater treatment and biological denitrification in a compact MFC reactor. Further optimization of the system is desired to improve its performance and applicability.

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KW - Biocathode

KW - Bioelectricity production

KW - Biological denitrification

KW - Microbial electrochemistry

KW - Microbial fuel cell

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A sandwiched denitrifying biocathode in a microbial fuel cell for electricity generation and waste minimization

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

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