TY - JOUR
T1 - Influence of carbon anode properties on performance and microbiome of Microbial Electrolysis Cells operated on urine
AU - Barbosa, Sónia G.
AU - Peixoto, Luciana
AU - Soares, Olívia S.G.P.
AU - Pereira, Manuel Fernando R.
AU - Heijne, Annemiek Ter
AU - Kuntke, Philipp
AU - Alves, Maria Madalena
AU - Pereira, Maria Alcina
PY - 2018/3/20
Y1 - 2018/3/20
N2 - Anode performance of Microbial Electrolysis Cells (MECs) fed with urine using different anodes, Keynol (phenolic-based), C-Tex (cellulose-based) and PAN (polyacrylonitrile-based) was compared under cell potential control (1st assay) and anode potential control (2nd assay). In both assays, C-Tex MEC outperformed MECs using Keynol and PAN. C-Tex MEC under anode potential control (−0.300 V vs. Ag/AgCl) generated the highest current density (904 mA m−2), which was almost 3-fold higher than the Keynol MEC and 8-fold higher than the PAN MEC. Analysis of anodes textural, chemical and electrochemical characteristics suggest that the higher external surface area of C-Tex enabled higher current density generation compared to Keynol and PAN. Anodes properties did not influence significantly the microbial diversity of the developed biofilm. Nonetheless, C-Tex had higher relative abundance of bacteria belonging to Lactobacillales and Enterobacteriales suggesting its correlation with the higher current generation.
AB - Anode performance of Microbial Electrolysis Cells (MECs) fed with urine using different anodes, Keynol (phenolic-based), C-Tex (cellulose-based) and PAN (polyacrylonitrile-based) was compared under cell potential control (1st assay) and anode potential control (2nd assay). In both assays, C-Tex MEC outperformed MECs using Keynol and PAN. C-Tex MEC under anode potential control (−0.300 V vs. Ag/AgCl) generated the highest current density (904 mA m−2), which was almost 3-fold higher than the Keynol MEC and 8-fold higher than the PAN MEC. Analysis of anodes textural, chemical and electrochemical characteristics suggest that the higher external surface area of C-Tex enabled higher current density generation compared to Keynol and PAN. Anodes properties did not influence significantly the microbial diversity of the developed biofilm. Nonetheless, C-Tex had higher relative abundance of bacteria belonging to Lactobacillales and Enterobacteriales suggesting its correlation with the higher current generation.
KW - Cellulose-based carbon
KW - Microbial community
KW - Microbial electrolysis cell
KW - Phenolic-based carbon
KW - Polyacrilonitrile-based carbon
U2 - 10.1016/j.electacta.2018.02.083
DO - 10.1016/j.electacta.2018.02.083
M3 - Article
AN - SCOPUS:85042353954
SN - 0013-4686
VL - 267
SP - 122
EP - 132
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -