Tri Mulyono

Department of Chemistry, University of Jember, Indonesia

Zulfikar

Department of Chemistry, University of Jember, Indonesia

Misto

Department of Physics, University of Jember, Indonesia

Ahmad Sholih

Department of Chemistry, University of Jember, Indonesia

DOI: https://doi.org/10.19184/cerimre.v6i1.38255

ABSTRACT 

The substrate is an important factor in the efficient production of electricity in Microbial Fuel Cells systems. The substrate is an organic compound that promotes the growth of active microbes. The goal of this study was to investigate the effect of substrate type and concentration on the bioelectricity produced by a single-chamber MFC. In this study, fructose and butyric acid were used as substrates. Carbon felt is used as the electrode. Both types and variations in substrate concentration were applied to the soil media used in the MFC. At 3 weeks of incubation, the optimum power density value produced by MFC with 90 g/L fructose substrate was 20.5 mW/m2. At 3 weeks of incubation, MFC treated with 800 mg/L butyric acid produced a maximum power density of 19.7 mW/m2.

Keywords: Substrate, fructose, butyric acid, power density, microbial fuel cells.