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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:28 |
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Conference: Bucharest University Faculty of Physics 2015 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Performance of microfluidic microbial fuel cells water quality sensors deployed in lake Snagov using a remotely operated vehicle
Authors:
Bogdan DOBRICA(1), Anca PRICOP(1)
Affiliation:
1)University of Bucharest, Faculty of Physics
E-mail
bdobrica@gmail.com
Keywords:
microbial fuel cell, microfluidics, water quality, biosensors, gaussian processes, cokriging
Abstract:
Microbial Fuel Cells (MFC) are biochemical devices utilizing certain species of bacteria known to release electrons as part of their metabolic processes in order to convert chemical to electrical energy. The same behavior has as a side effect the direct dependence between the output parameters of the device and the environmental conditions it resides in. Recent studies have proven that useful metabolic processes occur exclusively in the first few layers of microorganisms, usually 15 to 20 micrometers thick, suggesting the design of a microfluidic MFC as a natural improvement over the existing approaches with the projected small size with applications in environmental quality sensors. The paper proposes means of building a bicameral microfluidic MFC using laser ablation and laser embedding of carbon black, using a standard Nafion(R) N115 membrane that is tested using an autonomous Remotely Operated Vehicle (ROV) in lake Snagov. The ROV is equipped with a water quality monitoring kit that records and processes water pH, ORP, dissolved oxygen and electrical conductivity and uses a Gaussian Processes regression algorithm to match monitored parameters to MFC electrical parameters: open circuit voltage and internal resistance and their variation with time under precisely calibrated loads.
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