scholarly journals Secondary Sludge Biodegradation and Electricity Generation in Biocathode Microbial Fuel Cells

2021 ◽  
Author(s):  
Petia Mijaylova Nacheva ◽  
Danilo Gamboa-Santana ◽  
Edson B. Estrada-Arriaga
Keyword(s):  
Fuel Cells ◽  
Sewage Sludge ◽  
Microbial Fuel Cells ◽  
Ph Value ◽  
Electrical Energy ◽  
Sludge Stabilization ◽  
Energy Current ◽  
Secondary Sludge ◽  
Anodic Chamber ◽  
Direct Energy

The looking for sustainable sewage sludge management technology in the wastewater treatment plants, has brought to light the biocathode microbial fuel cells (bMFCs) which allow simultaneous biological stabilization and direct energy generation, avoiding the production of biogas. In the present study, the performance of bMFCs for the treatment of secondary sludge as anodic substrate was evaluated by analyzing the removal of organic matter, destruction of volatile solids and the generation of electrical energy under different operating conditions and applying two types of cathode chambers. The results indicated that VSS and tCOD removals up to 92% and 87% respectively can be achieved in the anodic chamber generating simultaneously energy. Current and power densities of 1.80 ± 0.09 A∙m−3 and 0.43 ± 0.02 W∙m−3 respectively were reached, showing that bMFCs are a reliable alternative to generate electricity during the sewage sludge stabilization process. It was revealed that the pH value and the type of cathodic zone are statistically significant factors that influenced the performance of the bMFCs. The obtained results demonstrated that the electrochemical performance of the bMFCs was better at pH value of 6 in the anodic chamber and when aerobic cathode zone was used.

scholarly journals Perspective on advanced nanomaterials used for energy storage and conversion

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hsuanyi Huang ◽  
Rong Li ◽  
Cuixia Li ◽  
Feng Zheng ◽  
Giovanni A. Ramirez ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Communication Systems ◽  
Sustainable Energy ◽  
Ambient Pressure ◽  
Electrical Energy ◽  
High Energy ◽  
Solid Oxide ◽  
Energy Storage And Conversion ◽  
Energy Materials

Abstract To drive the next ‘technical revolution’ towards commercialization, we must develop sustainable energy materials, procedures, and technologies. The demand for electrical energy is unlikely to diminish over the next 50 years, and how different countries engage in these challenges will shape future discourse. This perspective summarizes the technical aspects of nanomaterials’ design, evaluation, and uses. The applications include solid oxide fuel cells (SOFCs), solid oxide electrolysis cells (SOEC), microbial fuel cells (MFC), supercapacitors, and hydrogen evolution catalysts. This paper also described energy carriers such as ammonia which can be produced electrochemically using SOEC under ambient pressure and high temperature. The rise of electric vehicles has necessitated some form of onboard storage of fuel or charge. The fuels can be generated using an electrolyzer to convert water to hydrogen or nitrogen and steam to ammonia. The charge can be stored using a symmetrical supercapacitor composed of tertiary metal oxides with self-regulating properties to provide high energy and power density. A novel metal boride system was constructed to absorb microwave radiation under harsh conditions to enhance communication systems. These resources can lower the demand for petroleum carbon in portable power devices or replace higher fossil carbon in stationary power units. To improve the energy conversion and storage efficiency, we systematically optimized synthesis variables of nanomaterials using artificial neural network approaches. The structural characterization and electrochemical performance of the energy materials and devices provide guidelines to control new structures and related properties. Systemic study on energy materials and technology provides a feasible transition from traditional to sustainable energy platforms. This perspective mainly covers the area of green chemistry, evaluation, and applications of nanomaterials generated in our laboratory with brief literature comparison where appropriate. The conceptual and experimental innovations outlined in this perspective are neither complete nor authoritative but a snapshot of selecting technologies that can generate green power using nanomaterials.

Microbial Fuel Cells Using Agent-Based Simulation

2017 ◽  
pp. 212-226
Author(s):  
Diogo Ortiz Machado ◽  
Diana Francisca Adamatti ◽  
Eder Mateus Nunes Gonçalves
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Electrical Energy ◽  
Analytical Models ◽  
Agent Based Model ◽  
Technological Opportunity ◽  
Agent Based Simulation ◽  
Agent Based ◽  
Model And Simulation

Microbial Fuel Cells (MFC) could generate electrical energy combined with the wastewater treatment and they can be a promising technological opportunity. This chapter presents an agent-based model and simulation of MFC comparing it with analytical models, to show that this approach could model and simulate these problems with more abstraction and with excellent results.

Enhanced sludge stabilization coupled with microbial fuel cells (MFCs)

2020 ◽  
Author(s):  
Azize Ayol ◽  
İdris Biryol ◽  
Ergin Taşkan ◽  
Halil Hasar
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Sludge Stabilization

Producing electrical energy in microbial fuel cells based on sulphate reduction: a review

2020 ◽  
Vol 27 (29) ◽  
pp. 36075-36084 ◽  
Author(s):  
Isabel Cristina Braga Rodrigues ◽  
Versiane A. Leão
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Electrical Energy ◽  
Sulphate Reduction

Influence of ionic conductivity in bioelectricity production from saline domestic sewage sludge in microbial fuel cells

2016 ◽  
Vol 200 ◽  
pp. 845-852 ◽  
Author(s):  
Rengasamy Karthikeyan ◽  
Ammayaippan Selvam ◽  
Ka Yu Cheng ◽  
Jonathan Woon-Chung Wong
Keyword(s):  
Fuel Cells ◽  
Ionic Conductivity ◽  
Sewage Sludge ◽  
Microbial Fuel Cells ◽  
Domestic Sewage

Conversion of sewage sludge into high-performance bifunctional electrode materials for microbial energy harvesting

2015 ◽  
Vol 3 (16) ◽  
pp. 8475-8482 ◽  
Author(s):  
Yong Yuan ◽  
Ting Liu ◽  
Peng Fu ◽  
Jiahuan Tang ◽  
Shungui Zhou
Keyword(s):  
Fuel Cells ◽  
Sewage Sludge ◽  
Energy Harvesting ◽  
Microbial Fuel Cells ◽  
High Performance ◽  
Electrode Materials

Sewage sludge amended with biomass was converted into highly conductive biochar, which was used as a high-performance anode and cathode for microbial fuel cells.

Bioelectricity Generation from Wastewaters in Microbial Fuel Cells

2012 ◽  
Vol 512-515 ◽  
pp. 1456-1460 ◽  
Author(s):  
Nipon Pisutpaisal ◽  
Ubonrat Sirisukpoca
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Oxygen Demand ◽  
Half Cell ◽  
Current Output ◽  
Bioelectricity Generation ◽  
Operation Temperature ◽  
Anodic Chamber ◽  
Cathodic Chamber ◽  
Circuit Resistance

The study investigated bioelectricity generation from three types of wastewaters including artificial (AW), buffered brewery (BW) and buffered canteen (CW), in double chamber microbial fuel cells (MFCs). The biochemical oxygen demand (BOD) concentrations of influent were varied in the range of 125 - 1000 mg L-1. Influent pH and operation temperature were fixed at 7 and 30oC. 0.35 mL min-1wastewater was fed into a half-cell anodic chamber, while 5 mL min-1 oxygen-saturated distilled water was fed into a half-cell cathodic chamber. The circuit resistance was fixed at 10 ohms. The results showed that maximum current output obtained from AW, BW and CW with the initial BOD concentration of 1000 mg L-1were 0.92, 0.78 and 0.70 mA, respectively. The currents were directly proportional to the BOD concentrations in the influent for all wastewaters. The maximum BOD removal of AW, BW and CW was 90, 65 and 75%, respectively.

Enhanced power generation and energy conversion of sewage sludge by CEA–microbial fuel cells

2014 ◽  
Vol 166 ◽  
pp. 229-234 ◽  
Author(s):  
Carole Abourached ◽  
Keaton Larson Lesnik ◽  
Hong Liu
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Sewage Sludge ◽  
Energy Conversion ◽  
Microbial Fuel Cells
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