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The photosynthetic microalgae can remove organic and inorganic contaminants either by accumulating it in its cells or by producing oxygen in the process of photosynthesis which can be used by bacteria to degrade organic and inorganic pollutants and hence can remove pollutants from wastewater. Though, in microbial fuel cells (MFCs), organic substrates are used as fuel which gets oxidized by microorganisms and electricity is being produced by using electrons derived by microorganisms.

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Abstract

The photosynthetic microalgae can remove organic and inorganic contaminants either by accumulating it in its cells or by producing oxygen in the process of photosynthesis which can be used by bacteria to degrade organic and inorganic pollutants and hence can remove pollutants from wastewater. Though, in microbial fuel cells (MFCs), organic substrates are used as fuel which gets oxidized by microorganisms and electricity is being produced by using electrons derived by microorganisms. Therefore, integration of photosynthetic microalgae with MFCs where bacteria are being replaced by microalgae has made the entire process economically viable and energyefficient. As algae are the natural oxygen producer, no external aeration is required in photosynthetic- algal microbial fuel cells(PAMFCs) and the cultured biomass of algae can be again used as an economically feasible substrate in PAMFCs, thus reduces the energy cost. This study reviews the current development of PAMFCs and, its large scale implementation in the real world would be an ideal candidate to replace other expensive, energyconsuming and environmentally harmful system in coming decades.

Keywords

Microbial fuel cellEnvironmentally friendlyPhotosynthesisBiomass (ecology)MicroorganismWastewater

Identifiers

DOI
10.25303/2605rjce193201
Journal
Research Journal of Chemistry and Environment
Year
2022