Microbial fuel cell sensors for water quality early warning systems: Fundamentals, signal resolution, optimization and future challenges

Jiang, Yong; Yang, Xufei; Liang, Peng; Li, Panpan; Huang, Xia

doi:10.1016/j.rser.2017.06.099

Cited by 200 publications

(78 citation statements)

References 119 publications

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“…An emerging, exciting and unconventional method to detect and monitor pollutants in water and soil is to use microbes themselves as disposable sensors which can both recognize toxins and transduce their presence into measurable signals. Microbial fuel cells (MFCs) contain electroactive microbes that produce an electrical signal: a concentration dependent electrical current or voltage which are sensed using a solid electrode, when an environmental contaminant is detected . MFCs can be made specific to a certain contaminant or may provide collective information concerning the overall toxicity of a sample.…”

Section: Fields Of Applicationmentioning

confidence: 99%

Disposable Sensors in Diagnostics, Food, and Environmental Monitoring

et al. 2019

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Disposable sensors are low‐cost and easy‐to‐use sensing devices intended for short‐term or rapid single‐point measurements. The growing demand for fast, accessible, and reliable information in a vastly connected world makes disposable sensors increasingly important. The areas of application for such devices are numerous, ranging from pharmaceutical, agricultural, environmental, forensic, and food sciences to wearables and clinical diagnostics, especially in resource‐limited settings. The capabilities of disposable sensors can extend beyond measuring traditional physical quantities (for example, temperature or pressure); they can provide critical chemical and biological information (chemo‐ and biosensors) that can be digitized and made available to users and centralized/decentralized facilities for data storage, remotely. These features could pave the way for new classes of low‐cost systems for health, food, and environmental monitoring that can democratize sensing across the globe. Here, a brief insight into the materials and basics of sensors (methods of transduction, molecular recognition, and amplification) is provided followed by a comprehensive and critical overview of the disposable sensors currently used for medical diagnostics, food, and environmental analysis. Finally, views on how the field of disposable sensing devices will continue its evolution are discussed, including the future trends, challenges, and opportunities.

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Section: Fields Of Applicationmentioning

confidence: 99%

Disposable Sensors in Diagnostics, Food, and Environmental Monitoring

et al. 2019

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“…Both the current and power densities were normalized to the anode area. To compensate for any external factors and variations among different devices, the changes in the voltage before and after the drying of the inoculum were calculated as an inhibition ratio (IR) to assess the sensitivity according to the following equation [10]:…”

Section: Test Setup and Analysismentioning

confidence: 99%

“…The changes in electrical outputs can be measured to determine the presence and intensity of toxins in water [7]. Compared to the conventional biosensors mentioned previously, MFC sensors have several advantages in that (i) they do not require an additional transducer or power source, (ii) monitored water samples provide the organic substrates necessary to microorganisms, (iii) the biofilm in the MFC provides self-repairing and self-sustainable properties, and (iv) microorganisms can replace expensive metal catalysts [10,11].…”

Section: Introductionmentioning

confidence: 99%

A Portable, Single-Use, Paper-Based Microbial Fuel Cell Sensor for Rapid, On-Site Water Quality Monitoring

Cho

Gao

Choi

2019

Sensors

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Human access to safe water has become a major problem in many parts of the world as increasing human activities continue to spill contaminants into our water systems. To guarantee the protection of the public as well as the environment, a rapid and sensitive way to detect contaminants is required. In this work, a paper-based microbial fuel cell was developed to act as a portable, single-use, on-site water quality sensor. The sensor was fabricated by combining two layers of paper for a simple, low-cost, and disposable design. To facilitate the use of the sensor for on-site applications, the bacterial cells were pre-inoculated onto the device by air-drying. To eliminate any variations, the voltage generated by the microorganism before and after the air-drying process was measured and calculated as an inhibition ratio. Upon the addition of different formaldehyde concentrations (0%, 0.001%, 0.005%, and 0.02%), the inhibition ratios obtained were 5.9 ± 0.7%, 6.9 ± 0.7%, 8.2 ± 0.6%, and 10.6 ± 0.2%, respectively. The inhibition ratio showed a good linearity with the formaldehyde concentrations at R 2 = 0.931. Our new sensor holds great promise in monitoring water quality as a portable, low-cost, and on-site sensor.

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“…Wireless sensor technology can be built with an independent network free from certain network providers. Some early warning systems have been implemented for natural disaster warnings such as soil deformation, water quality, earthquake, tsunami, and flood [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Real-time decision support system for carbon monoxide threat warning using online expert system

Suryono¹,

Surarso²,

Saputra³

et al. 2019

J Appl Eng Science

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This paper describes a decision support system to mitigate the danger that carbon monoxide pose via internet-based measurement. This system is required because in high concentration above threshold, carbon monoxide can trigger many diseases and even cause death. However, a system that is capable of detection and making online decision in real-time against that threat is not yet available. Therefore, decisions on carbon monoxide threat are often taken too late as they are made manually with expert analysis. This research proposes the design of a sensor node composed of a gas sensor, a microcontroller, a WIFI router, and an Internet modem to acquire data and communicate them via the internet. The pollution index value and rule-based algorithm, which are used to determine carbon monoxide gas pollution categories in the web server program, are in accordance to data stated in the Indonesia Air Pollutant Index. An expert system programming based on expert knowledge is then used to make decision on pollution. Results show that the sensor node built is capable of sending data online to the cloud station, with Root Mean Square Error of 3.46 µg/m 2 and relative error of 0.78% for a measurement range of 0-440 µg/m 2. This system is also capable of sending data fast with a transfer rate of 764 milliseconds. Further testing also revealed that using expert system in cloud computing results in speedy warning of carbon monoxide threat, at 15.6 seconds.

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Microbial fuel cell sensors for water quality early warning systems: Fundamentals, signal resolution, optimization and future challenges

Cited by 200 publications

References 119 publications

Disposable Sensors in Diagnostics, Food, and Environmental Monitoring

Disposable Sensors in Diagnostics, Food, and Environmental Monitoring

A Portable, Single-Use, Paper-Based Microbial Fuel Cell Sensor for Rapid, On-Site Water Quality Monitoring

Real-time decision support system for carbon monoxide threat warning using online expert system

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