scholarly journals Integration of Portable Sedimentary Microbial Fuel Cells in Autonomous Underwater Vehicles

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4551
Author(s):  
Giulia Massaglia ◽  
Adriano Sacco ◽  
Alain Favetto ◽  
Luciano Scaltrito ◽  
Sergio Ferrero ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Environmental Conditions ◽  
Microbial Fuel Cells ◽  
Autonomous Underwater Vehicle ◽  
Autonomous Vehicle ◽  
Autonomous Underwater Vehicles ◽  
Cost Effective ◽  
Remote Sensors ◽  
Effective System ◽  
Overall Performance

In the present work, sedimentary microbial fuel cells (s-MFC) have been proposed as effective tools to power remote sensors in different aquatic environments, thanks to their ability to produce renewable and sustainable energy continuously and autonomously. The present work proposes the optimization of cylindrical sedimentary microbial fuel cells (s-MFC) as a compact and cost-effective system suitable to be integrated as a payload in an Autonomous Underwater Vehicle (AUV). To this purpose, a new AUV payload, named MFC-payload, is designed to host the cylindrical s-MFC and a data acquisition system to collect and store information on the voltage produced by the cell. Its overall performance was evaluated during two field measurement campaigns carried out in the Mediterranean Sea. This investigation demonstrates the power production by s-MFC during operation of the AUV in seawater and analyzes the actual influence of environmental conditions on the output power. This study demonstrates that energy production by s-MFCs integrated in AUV systems is decoupled by the navigation of the autonomous vehicle itself, showing the effectiveness of the application of MFC-based technology as a power payload for environmental analysis. All these latter results demonstrate and confirm the ability of the devices to continuously produce electricity during different AUV operation modes (i.e., depth and speed), while changing environmental conditions (i.e., pressure, temperature and oxygen content) demonstrate that cylindrical s-MFC devices are robust system that can be successfully used in underwater applications.

Phosphate ion and oxygen defect-modulated nickel cobaltite nanowires: a bifunctional cathode for flexible hybrid supercapacitors and microbial fuel cells

2020 ◽  
Vol 8 (17) ◽  
pp. 8722-8730
Author(s):  
Wenda Qiu ◽  
Quanhua Zhou ◽  
Hongbing Xiao ◽  
Chun Zhou ◽  
Wenting He ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Cost Effective ◽  
Oxygen Defect ◽  
Hybrid Supercapacitors ◽  
Phosphate Ion ◽  
Nickel Cobaltite

The exploration of efficient and cost-effective cathodes for flexible hybrid supercapacitors (HSCs) and microbial fuel cells (MFCs) is highly desirable but challenging.

Cost-effective copper removal by electrosorption powered by microbial fuel cells

2016 ◽  
Vol 39 (3) ◽  
pp. 511-519 ◽  
Author(s):  
Jie Yang ◽  
Minghua Zhou ◽  
Youshuang Hu ◽  
Weilu Yang
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Cost Effective ◽  
Copper Removal

scholarly journals Wastewater Remediation Using Microbial Fuel Cells and Bioenergy Production

2018 ◽  
Author(s):  
Balaji B. Prasath ◽  
Karen Poon
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Multidisciplinary Approach ◽  
Practical Interest ◽  
Cost Effective ◽  
Practical Application ◽  
Wastewater Remediation ◽  
Potential Benefits ◽  
Near Future

Microbial Fuel Cells (MFCs) representing a promising technology for the extract of energy and resources through wastewater and it also offer an economic solution to the problem of environment effluent and energy crisis in near future. The advance device is rather appealing, due its potential benefits, its practical application is, however hindered by several drawbacks, such an internally competing microbial reaction, and low power generation. This report is an endeavor to address various design connected to the MFCs application to wastewater treatment, in particular cost effective bioelectricity from waste water are reviewed and discussed with a multidisciplinary approach. The conclusions drawn herein can be of practical interest to all new researchers dealing with effluent wastewater treatment using MFCs.

Cost-effective Carbon Catalysts and Related Electrode Designs for the Air Cathode of Microbial Fuel Cells

2019 ◽  
pp. 169-203
Author(s):  
Wei Yang ◽  
Jun Li ◽  
Qian Fu ◽  
Liang Zhang ◽  
Xun Zhu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Cost Effective ◽  
Air Cathode ◽  
Carbon Catalysts

scholarly journals Development of Modular Bio-Inspired Autonomous Underwater Vehicle for Close Subsea Asset Inspection

2021 ◽  
Vol 11 (12) ◽  
pp. 5401
Author(s):  
Wael Gorma ◽  
Mark A. Post ◽  
James White ◽  
James Gardner ◽  
Yang Luo ◽  
...  
Keyword(s):  
Autonomous Underwater Vehicle ◽  
Autonomous Underwater Vehicles ◽  
Magnetic Coupling ◽  
Wind Farms ◽  
Cost Effective ◽  
Offshore Wind ◽  
Offshore Wind Farms ◽  
Physical Constraints ◽  
Modular Software ◽  
Wide Range

To reduce human risk and maintenance costs, Autonomous Underwater Vehicles (AUVs) are involved in subsea inspections and measurements for a wide range of marine industries such as offshore wind farms and other underwater infrastructure. Most of these inspections may require levels of manoeuvrability similar to what can be achieved by tethered vehicles, called Remotely Operated Vehicles (ROVs). To extend AUV intervention time and perform closer inspection in constrained spaces, AUVs need to be more efficient and flexible by being able to undulate around physical constraints. A biomimetic fish-like AUV known as RoboFish has been designed to mimic propulsion techniques observed in nature to provide high thrust efficiency and agility to navigate its way autonomously around complex underwater structures. Building upon advances in acoustic communications, computer vision, electronics and autonomy technologies, RoboFish aims to provide a solution to such critical inspections. This paper introduces the first RoboFish prototype that comprises cost-effective 3D printed modules joined together with innovative magnetic coupling joints and a modular software framework. Initial testing shows that the preliminary working prototype is functional in terms of water-tightness, propulsion, body control and communication using acoustics, with visual localisation and mapping capability.

Recovery of chromium, copper and vanadium combined with electricity generation in two-chambered microbial fuel cells

2020 ◽  
Vol 367 (15) ◽  
Author(s):  
Kartik S Aiyer
Keyword(s):  
Heavy Metal ◽  
Fuel Cells ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Cost Effective ◽  
Biological Reduction ◽  
Metal Pollutants ◽  
Effective Manner ◽  
Metal Treatment ◽  
Heavy Metal Pollutants

ABSTRACT Microbial fuel cells (MFCs) offer a promising solution towards recovery and treatment of heavy metal pollutants. In this study, two-chambered MFCs were employed for recovery of chromium, copper and vanadium (Cr (VI), Cu (II) and V (V)). One g/L concentrations of K2Cr2O7, CuCl2 and NaVO3 served as catholytes, while a mixed culture was used as anolyte. Cr (VI), Cu (II) and V (V) were reduced biologically into less toxic forms of Cr (III), Cu and V (IV) respectively. Power density and cathodic efficiency were calculated for each of the catholytes. Cr (VI) gave the maximum power density and cathodic efficiency due to its high redox potential. Current produced depended on the concentration of the catholyte. Over a period of time, biological reduction of catholytes lead to decrease in the metal concentrations, which demonstrated the application of MFC technology towards heavy metal treatment and recovery in a reasonably cost-effective manner.

Dynamics and navigation of autonomous underwater vehicles for submarine gravity surveying

Geophysics ◽  
2013 ◽  
Vol 78 (3) ◽  
pp. G55-G68 ◽  
Author(s):  
James C. Kinsey ◽  
Maurice A. Tivey ◽  
Dana R. Yoerger
Keyword(s):  
Autonomous Underwater Vehicle ◽  
Gravity Data ◽  
Autonomous Underwater Vehicles ◽  
Free Water ◽  
Cost Effective ◽  
Marine Gravity ◽  
State Estimators ◽  
Gravity Measurements ◽  
Effective Option ◽  
Vertical Accelerations

We investigated the effect of autonomous underwater vehicle (AUV) dynamics and navigation on underway submarine gravimetry. Our research was motivated by the need to obtain spatially dense marine gravity measurements close to the source of subkilometer-scale geologic features in the shallow oceanic crust. Such measurements have been previously obtained, for instance, with piloted submarines and towed sleds; however, the high cost and, in the case of on-bottom measurements, poor spatial sampling preclude routine acquisition of these measurements. Continuous underway gravity surveys with AUVs is a compelling cost-effective option, but this method requires separating the AUV accelerations from the measured gravity. We show that AUVs with a large distance between the center of buoyancy and the center of gravity have lower vertical accelerations than torpedo-shaped AUVs and consequentially are better suited for underway gravity surveys. Furthermore state estimators, which combine sensor measurements and models of the vehicle’s motion, provide superior estimates of the vehicle’s vertical accelerations than methods used in previous underway submarine gravity surveys. We simulated the use of these navigation methods in detecting dike swarms at the East Pacific Rise. Analysis showed that we can shorten filters used in reducing gravity data and consequentially provide improved measurements of the free-water anomaly with a minimal detectable spatial wavelength approximately 65% lower than previously reported results.

scholarly journals Sacrificing power for more cost-effective treatment: A techno-economic approach for engineering microbial fuel cells

Chemosphere ◽  
2016 ◽  
Vol 161 ◽  
pp. 10-18 ◽  
Author(s):  
Zachary A. Stoll ◽  
Zhaokun Ma ◽  
Christopher B. Trivedi ◽  
John R. Spear ◽  
Pei Xu
Keyword(s):  
Fuel Cells ◽  
Effective Treatment ◽  
Microbial Fuel Cells ◽  
Cost Effective ◽  
Economic Approach ◽  
Cost Effective Treatment
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