A dual chamber microbial fuel cell based biosensor for monitoring copper and arsenic in municipal wastewater.

Do, MH; Ngo, HH; Guo, W; Chang, SW; Nguyen, DD; Pandey, A; Sharma, P; Varjani, S; Nguyen, TAH; Hoang, NB

A dual chamber microbial fuel cell based biosensor for monitoring copper and arsenic in municipal wastewater.

Do, MH Ngo, HH Guo, W

Chang, SW Nguyen, DD Pandey, A Sharma, P Varjani, S Nguyen, TAH Hoang, NB

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Sci Total Environ, 2022, 811, pp. 152261
Issue Date:: 2022-03-10

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Field	Value	Language
dc.contributor.author	Do, MH
dc.contributor.author	Ngo, HH
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Chang, SW
dc.contributor.author	Nguyen, DD
dc.contributor.author	Pandey, A
dc.contributor.author	Sharma, P
dc.contributor.author	Varjani, S
dc.contributor.author	Nguyen, TAH
dc.contributor.author	Hoang, NB
dc.date.accessioned	2023-01-26T04:30:02Z
dc.date.available	2021-12-04
dc.date.available	2023-01-26T04:30:02Z
dc.date.issued	2022-03-10
dc.identifier.citation	Sci Total Environ, 2022, 811, pp. 152261
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/165464
dc.description.abstract	This study investigated a dual-chamber microbial fuel cell-based biosensor (DC-MFC-B) for monitoring copper and arsenic in municipal wastewater. Operational conditions, including pH, flow rate, a load of organic substrate and external resistance load, were optimized to improve the biosensor's sensitivity. The DC-MFC-B's toxicity response was established under the electroactive bacteria inhibition rate function to a specific heavy metal level as well as the recovery of the DC-MFC-B. Results show that the DC-MFC-B was optimized at the operating conditions of 1000 Ω external resistance, COD 300 mg L-1 and 50 mM K3Fe(CN)6 as a catholyte solution. The voltage output of the DC-MFC-B decreased with increasing in the copper and arsenic concentrations. A significant linear relationship between the maximum voltage of the biosensor and the heavy metal concentration was obtained with a coefficient of R2 = 0.989 and 0.982 for copper and arsenic, respectively. The study could detect copper (1-10 mg L-1) and arsenic (0.5-5 mg L-1) over wider range compared to other studies. The inhibition ratio for both copper and arsenic was proportional to the concentrations, indicating the electricity changes are mainly dependent on the activity of the electrogenic bacteria on the anode surface. Moreover, the DC-MFC-B was also recovered in few hours after being cleaned with a fresh medium. It was found that the concentration of the toxicant effected on the recovery time and the recovery time was varied between 4 and 12 h. In short, this work provided new avenues for the practical application of microbial fuel cells as a heavy metal biosensor.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER
dc.relation.ispartof	Sci Total Environ
dc.relation.isbasedon	10.1016/j.scitotenv.2021.152261
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Arsenic
dc.subject.mesh	Bioelectric Energy Sources
dc.subject.mesh	Biosensing Techniques
dc.subject.mesh	Copper
dc.subject.mesh	Electricity
dc.subject.mesh	Electrodes
dc.subject.mesh	Wastewater
dc.subject.mesh	Arsenic
dc.subject.mesh	Copper
dc.subject.mesh	Biosensing Techniques
dc.subject.mesh	Electrodes
dc.subject.mesh	Bioelectric Energy Sources
dc.subject.mesh	Electricity
dc.subject.mesh	Waste Water
dc.title	A dual chamber microbial fuel cell based biosensor for monitoring copper and arsenic in municipal wastewater.
dc.type	Journal Article
utslib.citation.volume	811
utslib.location.activity	Netherlands
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2024-01-10T00:00:00+1000Z
dc.date.updated	2023-01-26T04:29:59Z
pubs.publication-status	Published
pubs.volume	811

Abstract:

This study investigated a dual-chamber microbial fuel cell-based biosensor (DC-MFC-B) for monitoring copper and arsenic in municipal wastewater. Operational conditions, including pH, flow rate, a load of organic substrate and external resistance load, were optimized to improve the biosensor's sensitivity. The DC-MFC-B's toxicity response was established under the electroactive bacteria inhibition rate function to a specific heavy metal level as well as the recovery of the DC-MFC-B. Results show that the DC-MFC-B was optimized at the operating conditions of 1000 Ω external resistance, COD 300 mg L-1 and 50 mM K3Fe(CN)6 as a catholyte solution. The voltage output of the DC-MFC-B decreased with increasing in the copper and arsenic concentrations. A significant linear relationship between the maximum voltage of the biosensor and the heavy metal concentration was obtained with a coefficient of R2 = 0.989 and 0.982 for copper and arsenic, respectively. The study could detect copper (1-10 mg L-1) and arsenic (0.5-5 mg L-1) over wider range compared to other studies. The inhibition ratio for both copper and arsenic was proportional to the concentrations, indicating the electricity changes are mainly dependent on the activity of the electrogenic bacteria on the anode surface. Moreover, the DC-MFC-B was also recovered in few hours after being cleaned with a fresh medium. It was found that the concentration of the toxicant effected on the recovery time and the recovery time was varied between 4 and 12 h. In short, this work provided new avenues for the practical application of microbial fuel cells as a heavy metal biosensor.

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http://hdl.handle.net/10453/165464