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A strategy for power generation from bilgewater using a photosynthetic microalgal fuel cell (MAFC)
A strategy for power generation from bilgewater using a photosynthetic microalgal fuel cell (MAFC)
- Source :
- J Power Sources
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Microbial fuel cells (MFCs) have recently been applied to generate electricity from oily wastewater. Although MFCs that utilize microalgae to provide a self-supporting oxygen (O(2)) supply at the cathode have been well discussed, those with microalgae at the anode as an active biomass for treating wastewater and producing electrons are still poorly studied and understood. Here, we demonstrated a bilgewater treatment using single- and double-chamber microalgal fuel cells (SMAFC and DMAFC) capable of generating energy with a novel microalgal strain (Chlorella sorokiniana) that was initially isolated from oily wastewater. Compared to previous MFC studies using green algae, relatively high voltage output (151.3–160.1 mV, 71.3–83.4 mV m(−2) of power density) was observed in the SMAFC under O(2) controlled systems (i.e., acetate addition or light/dark cycle). It was assumed that, under the O(2) depletion, alternative electron acceptors such as bicarbonate may be utilized for power generation. A DMAFC showed better power density (up to 23.9%) compared to the SMAFC due to the separated cathode chamber which fully utilizes O(2) as an electron acceptor. Both SMAFC and DMAFC removed 67.2–77.4% of soluble chemical oxygen demands (SCOD) from the synthetic bilgewater. This study demonstrates that the application of algae-based MFCs is a feasible strategy to treat oil-in-water emulsion while generating electricity.
- Subjects :
- Chlorella sorokiniana
Microbial fuel cell
Renewable Energy, Sustainability and the Environment
Chemistry
Energy Engineering and Power Technology
Biomass
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Pulp and paper industry
01 natural sciences
Article
Cathode
0104 chemical sciences
law.invention
Anode
Electricity generation
Wastewater
law
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
0210 nano-technology
Power density
Subjects
Details
- ISSN :
- 03787753
- Volume :
- 484
- Database :
- OpenAIRE
- Journal :
- Journal of Power Sources
- Accession number :
- edsair.doi.dedup.....ca6f60e2291ef870fe793fcc84bd813d
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2020.229222