title: Conditions for high resistance to starvation periods in bioelectrochemical systems.
abstract: The present work aims at understanding the performance of bioelectrochemical systems when subjected to different starvation periods, which is very relevant in view of their industrial application or use as biosensor. The results show that both microbial fuel cells (MFC) and microbial electrolysis cells (MEC) could resist starvation periods up to 10-11 days without any significant decrease in their performance when endogenous consumption was enabled by closing the circuit in MFC or applying an external voltage in MEC. By contrast, starvation periods longer than 5 days in both MFC and MEC when the flow of electrons from the anode to the cathode was not permitted thereby avoiding endogenous consumption, led to a reversible decrease in the cells performance. A longer starvation period of 21-days under open-circuit caused an irreversible performance loss of the MFC.
authors.affiliation: GENOCOV, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain. Electronic address: yolanda.ruiz@uab.cat.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Ruiz
authors.affiliation: GENOCOV, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain. Electronic address: edgarribot@gmail.com.
authors.forename: Edgar
authors.initials: E
authors.lastname: Ribot-Llobet
authors.affiliation: GENOCOV, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain. Electronic address: Juanantonio.baeza@uab.cat.
authors.forename: Juan Antonio
authors.initials: JA
authors.lastname: Baeza
authors.affiliation: GENOCOV, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain. Electronic address: Albert.guisasola@uab.cat.
authors.forename: Albert
authors.initials: A
authors.lastname: Guisasola
mesh_terms: D001674:Bioelectric Energy Sources; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods; D004572:Electrolysis; D004867:Equipment Design
keywords: Exoelectrogenic bacteria; Microbial electrolysis cell; Microbial fuel cell; Starvation; Substrate accumulation