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KMID : 0545120190290121861
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Journal of Microbiology and Biotechnology
2019 Volume.29 No. 12 p.1861 ~ p.1872
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Employing Laccase-Producing Aspergillus sydowii NYKA 510 as a Cathodic Biocatalyst in Self-Sufficient Lighting Microbial Fuel Cell
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Abdallah Yomna K.
Estevez Alberto T.
Tantawy Diaa El Deen M.
Ibraheem Ahmad M.
Khalil Neveen M.
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Abstract
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In the present work, we isolated and identified Aspergillus sydowii NYKA 510 as the most potent laccase producer. Its medium constituents were optimized to produce the highest possible amount of laccase, which was after 7 days at 31oC and pH 5.2. Banana peel and peptone excelled in inducing laccase production at concentrations of 15.1 and 2.60 g/l, respectively. Addition of copper sulfate elevated enzyme yield to 145%. The fungus was employed in a microbial fuel cell (MFC). The best performance was obtained at 2000 Ω achieving 0.76 V, 380 mAm-2, 160 mWm-2, and 0.4 W. A project to design a self-sufficient lighting unit was implemented by employing a system of 2 sets of 4 MFCs each, connected in series, for electricity generation. A scanning electron microscopy image of A. sydowii NYKA 510 was utilized in algorithmic form generation equations for the design. The mixed patterning and patterned customized mass approach were developed by the authors and chosen for application in the design.
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KEYWORD
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Aspergillus sydowii, laccase, microbial fuel cell, self-sufficient lighting design
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