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This study explores the use of molasses as a cost-effective organic substrate for electricity production in MFCs inoculated by Staphylococcus saprophyticus ICBB 9554, achieving better performance compared to sugar and palm sugar.

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What they did

System
MFC

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Abstract

Abstract Microbial Fuel Cells (MFCs) are bioelectrochemical devices that can directly transform the chemical energy from organic matter into electrical energy using microbial metabolic activity, so microbes play an essential role. This study explores some organic substrate alternative cost-effective for Staphylococcus saprophyticus ICBB 9554 as an exoelectrogen for electricity production in MFCs. The organic substrates that were chosen were sugar, molasses, and palm sugar. The best performance in electricity production was in molasses which showed output voltage, electrical current, and power density of 789 mV, 0.48 mA, and 68 mW/m 2 , respectively. The COD removal, Coulombic efficiency, and bacterial density in molasses also the highest that was about 68.18 ± 0.00%, 45.80 ± 2.17%, and 1.09×108 cfu/ml, respectively. Molasses is a potentially cost-effective alternative organic substrate for MFCs inoculated by Staphylococcus saprophyticus ICBB 9554.

Key findings

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Keywords

Staphylococcus saprophyticusMicrobial fuel cellFaraday efficiencySubstrate (aquarium)Pulp and paper industryFood science

Identifiers

DOI
10.1088/1755-1315/927/1/012028
Journal
IOP Conference Series: Earth and Environmental Science
Year
2021