title: Effects of a static magnetic field on phenol degradation effectiveness and Rhodococcus erythropolis growth and respiration in a fed-batch reactor.
abstract: The aim of this study was to evaluate the impact of short-term repeated exposure to a static magnetic field (induction 370 mT) on the Rhodococcus erythropolis cells. Specifically, it was ascertained the magnetic field's potential to influence degradation of a phenol substrate, cell growth and respiration activity (oxygen consumption) during substrate biodegradation. The experiment took place over 3 days, with R. erythropolis exposed to the magnetic field for the first day. During the experiment, different recirculation rates between the reactor and the magnetic contactor has been tested. Use of the magnetic field at higher recirculation rates (residence time in contactor was less than 7 min) stimulated substrate (phenol) oxidation by around 34%; which, in turn, promoted R. erythropolis growth by around 28% by shortening the lag- and exponential-phases and increasing bacterial respiration activity by around 10%.
authors.affiliation: Institute for Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic. Electronic address: lucie.kriklavova@tul.cz.
authors.forename: Lucie
authors.initials: L
authors.lastname: Křiklavová
authors.affiliation: Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic. Electronic address: martin.truhlar@tul.cz.
authors.forename: Martin
authors.initials: M
authors.lastname: Truhlář
authors.affiliation: Institute for Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic; Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic. Electronic address: petra.skodova@tul.cz.
authors.forename: Petra
authors.initials: P
authors.lastname: Škodováa
authors.affiliation: Institute for Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic. Electronic address: tomas.lederer@tul.cz.
authors.forename: Tomáš
authors.initials: T
authors.lastname: Lederer
authors.affiliation: Department of Biotechnology, Institute of Chemical Technology, Prague, Technická 5, 166 28 Praha 6, Czech Republic. Electronic address: vladimir.jirku@vscht.cz.
authors.forename: Vladimír
authors.initials: V
authors.lastname: Jirků
mesh_terms: D000332:Aerobiosis; D061249:Batch Cell Culture Techniques / Q000295:instrumentation*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D003198:Computer Simulation; D060526:Magnetic Fields; D019800:Phenol / Q000378:metabolism*; D012240:Rhodococcus / Q000254:growth & development* / Q000378:metabolism*
chemical_list: D019800:Phenol
keywords: Bacterial degradation enhanced; Fed-batch bioreactor; Phenol biodegradation; Rhodococcus erythropolis; Static magnetic field