Microbial fuel cell biosensor for the determination of biochemical oxygen demand of wastewater samples containing readil
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ORIGINAL RESEARCH PAPER
Microbial fuel cell biosensor for the determination of biochemical oxygen demand of wastewater samples containing readily and slowly biodegradable organics Ga´bor Ma´rk Tardy . Ba´lint Lo´ra´nt . Miklo´s Gyalai-Korpos . Vince Bakos . David Simpson . Igor Goryanin
Received: 17 April 2020 / Accepted: 15 November 2020 Ó The Author(s) 2020
Abstract Objectives Single-chamber air cathode microbial fuel cells (MFCs) were applied as biosensors for biochemical oxygen demand (BOD) measurement of real wastewaters with considerable suspended and/or slowly biodegradable organic content. Results The measurement method consists of batch sample injection, continuous measurement of cell voltage and calculation of total charge (Q) gained during the biodegradation of organic content. Diverse Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10529-020-03050-5) contains supplementary material, which is available to authorized users.
samples were analyzed: acetate and peptone samples containing only soluble readily biodegradable substrates; corn starch and milk samples with suspended and colloidal organics; real domestic and brewery wastewaters. Linear regression fitted to the Q vs. BOD5 measurement points of the real wastewaters provided high ([ 0.985) R2 values. Time requirement of the measurement varied from 1 to 4 days, depending on the composition of the sample. Conclusions Relative error of BOD measured in the MFCs comparing with BOD5 was less than 10%, thus the method might be a good basis for the development of on-site automatic BOD sensors for real wastewater samples.
G. M. Tardy (&) B. Lo´ra´nt V. Bakos Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szt. Gelle´rt te´r 4., Budapest 1111, Hungary e-mail: [email protected]
D. Simpson I. Goryanin Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna-Son, Kunigami-gun, Okinawa 904-0495, Japan e-mail: [email protected]
B. Lo´ra´nt e-mail: [email protected]
I. Goryanin e-mail: [email protected]
V. Bakos e-mail: [email protected] M. Gyalai-Korpos Pannon Pro Innovations Ltd., P.O.B 41, Budapest 1400, Hungary e-mail: [email protected] M. Gyalai-Korpos BES Europe Ltd, 39 Mura´nyi u., Budapest 1078, Hungary
I. Goryanin School of Informatics, University of Edinburgh, 10 Crichton str., Edinburgh EH8 9AB, UK I. Goryanin Tianjin Institute of Industrial Biotechnology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
123
Biotechnol Lett
Keywords Biochemical oxygen demand Biosensor Microbial fuel cell Wastewater characterization
Introduction In microbial fuel cells (MFCs), the chemical energy of biodegradable organics can be converted directly to electricity through the metabolism of exoelectrogenic bacteria. The generated electricity can be measured and/or utilized (Rabaey and Verstraete 2005). A promising perspective for the application of
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