2020
DOI: 10.1021/acsomega.0c01333
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Portable, Disposable, Paper-Based Microbial Fuel Cell Sensor Utilizing Freeze-Dried Bacteria for In Situ Water Quality Monitoring

Abstract: Water quality monitoring is becoming an essential part of our lives as increasing human activities continue to spill unknown and unexpected contaminants into our water systems. To ensure the provision of safe and clean water to the public and the ecosystem, the development of rapid and sensitive in situ early warning systems for water toxicity monitoring is crucial. In this work, an entirely paper-based microbial fuel cell sensor utilizing freeze-dried bacteria is demonstrated as a portable and disposable wate… Show more

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Cited by 33 publications
(20 citation statements)
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References 44 publications
(106 reference statements)
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“…As an emerging concept, the feasibility of 3D-printed bioelectrode could still be questionable. However, EAB can rapidly recover from extreme and harsh environments, such as extremely low-temperature settings below freezing point (Winfield et al, 2015;Cho et al, 2020), long-term (5-10 days) starvation (Ruiz et al, 2015;Dhar et al, 2018). The digital printing of electroactive cyanobacterium onto the paper electrode was also successful in the past (Sawa et al, 2017).…”
Section: Discussionmentioning
confidence: 99%
“…As an emerging concept, the feasibility of 3D-printed bioelectrode could still be questionable. However, EAB can rapidly recover from extreme and harsh environments, such as extremely low-temperature settings below freezing point (Winfield et al, 2015;Cho et al, 2020), long-term (5-10 days) starvation (Ruiz et al, 2015;Dhar et al, 2018). The digital printing of electroactive cyanobacterium onto the paper electrode was also successful in the past (Sawa et al, 2017).…”
Section: Discussionmentioning
confidence: 99%
“…Cho et al developed a couple of paper-based MFC biosensors for on-site water quality monitoring (Figure 6e). [120,121] For preservation and long-term storage of the electrogenic bacteria in paper, preloaded bacterial cells were air-dried or freeze-dried and demonstrated a long shelf-life. After use, the paper biosensors were safely and properly disposed of by incineration, potentially removing any risk of bacterial infection or contamination.…”
Section: Waste Quality Monitoringmentioning
confidence: 99%
“…[87][88][89] The relatively high ohmic resistance of paper, around 50 U, 85 prevents short-circuiting of electrodes in close proximity allowing minimum electrode spacing and the need for a separator. 74,90 The addition of PTFE to bind the ink to the substrate, improves stability of the printed electrode, 91 while crosslinking the bres of the paper can improve the system stability. 85 The 3-D microstructure of paper modied with conductive inks, allows the creation of porous electrodes with a high surface area for the electroactive biolm 90 (Fig.…”
Section: Paper and Screen-printed Based Mfcsmentioning
confidence: 99%
“…74,90 The addition of PTFE to bind the ink to the substrate, improves stability of the printed electrode, 91 while crosslinking the bres of the paper can improve the system stability. 85 The 3-D microstructure of paper modied with conductive inks, allows the creation of porous electrodes with a high surface area for the electroactive biolm 90 (Fig. 2C).…”
Section: Paper and Screen-printed Based Mfcsmentioning
confidence: 99%