Open AccessCyclic voltammetry studies of bioanode microbial fuel fells from batch culture of Geobacter sulfurreducens
Author(s) -
Noor Fazliani Shoparwe,
Muaz Mohd Zaini Makhtar,
Suhairi A. Sata,
Wee Seng Kew,
Mardawani Mohamad,
H Shukor
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/765/1/012102
Subject(s) - geobacter sulfurreducens , microbial fuel cell , cyclic voltammetry , anode , chemistry , saturated calomel electrode , analytical chemistry (journal) , electrode , cathode , electrochemistry , working electrode , chromatography , biofilm , biology , bacteria , genetics
The present study aims to investigate the performance of batch culture of Geobacter sulfurreducens (G. sulfurreducens ) for electrical current generation via cyclic voltammetry (CV) method. The CV study was performed with an applied voltage in the range of -0.1 to 0.1 V against the standard calomel electrode (SCE) during the cell growth and attachment of G. sulfurreducens on graphite felt and initial acetate concentration of 20 mM. The kinetics of electrode reaction was investigated by conducting CV experiments at different scanning rates of 5, 10, 20, 50 and 100 mVs -1 . The diffusion coefficients (D) and heterogeneous electron transfer rate constant (k o ) of both anodic and cathodic process were 1.04×10 -5 cm 2 ·s -1 , 1.73×10 -6 cm 2 .s -1 , 0.0004 cm.s -1 and 0.0011 cm.s -1 , respectively. The obtained results showed that the anode exhibits high bioeletrocatalytic activity due to the attachment of G. sulfurreducens on the anode surface.