TY - JOUR
T1 - Assessment of biotic and abiotic graphite cathodes for hydrogen production in microbial electrolysis cells
AU - Batlle-Vilanova, Pau
AU - Puig, Sebastià
AU - Gonzalez-Olmos, Rafael
AU - Vilajeliu-Pons, Anna
AU - Bañeras, Lluís
AU - Balaguer, M. Dolors
AU - Colprim, Jesús
PY - 2014/1/16
Y1 - 2014/1/16
N2 - Hydrogen represents a promising clean fuel for future applications. The biocathode of a two-chambered microbial electrolysis cell (biotic MEC) was studied and compared with an abiotic cathode (abiotic MEC) in order to assess the influence of naturally selected microorganisms for hydrogen production in a wide range of cathode potentials (from -400 to -1800 mV vs SHE). Hydrogen production in both MECs increased when cathode potential was decreased. Microorganisms present in the biotic MEC were identified as Hoeflea sp. and Aquiflexum sp. Supplied energy was utilized more efficiently in the biotic MEC than in the abiotic, obtaining higher hydrogen production respect to energy consumption. At -1000 mV biotic MEC produced 0.89 ± 0.10 m3 H2 d-1 m-3NCC (Net Cathodic Compartment) at a minimum operational cost of 3.2 USD kg-1 H2. This cost is lower than the estimated market value for hydrogen (6 USD kg-1 H 2).
AB - Hydrogen represents a promising clean fuel for future applications. The biocathode of a two-chambered microbial electrolysis cell (biotic MEC) was studied and compared with an abiotic cathode (abiotic MEC) in order to assess the influence of naturally selected microorganisms for hydrogen production in a wide range of cathode potentials (from -400 to -1800 mV vs SHE). Hydrogen production in both MECs increased when cathode potential was decreased. Microorganisms present in the biotic MEC were identified as Hoeflea sp. and Aquiflexum sp. Supplied energy was utilized more efficiently in the biotic MEC than in the abiotic, obtaining higher hydrogen production respect to energy consumption. At -1000 mV biotic MEC produced 0.89 ± 0.10 m3 H2 d-1 m-3NCC (Net Cathodic Compartment) at a minimum operational cost of 3.2 USD kg-1 H2. This cost is lower than the estimated market value for hydrogen (6 USD kg-1 H 2).
KW - Biocathode
KW - Biohydrogen
KW - Energy utilization
KW - Two-chambered MEC
UR - http://www.scopus.com/inward/record.url?scp=84890859222&partnerID=8YFLogxK
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_univeritat_ramon_llull&SrcAuth=WosAPI&KeyUT=WOS:000331422200012&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1016/j.ijhydene.2013.11.017
DO - 10.1016/j.ijhydene.2013.11.017
M3 - Article
AN - SCOPUS:84890859222
SN - 0360-3199
VL - 39
SP - 1297
EP - 1305
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 3
ER -
