title: Harvesting microalgal biomass using a magnetically induced membrane vibration (MMV) system: filtration performance and energy consumption.
abstract: This study was performed to investigate the effectiveness of submerged microfiltration to harvest both a marine diatom Phaeodactylum tricornutum and a Chlorella vulgaris in a recently developed magnetically induced membrane vibrating (MMV) system. We assess the filtration performance by conducting the improved flux step method (IFM), fed-batch concentration filtrations and membrane fouling autopsy using two lab-made membranes with different porosity. The full-scale energy consumption was also estimated. Overall results suggest that the MMV offers a good fouling control and the process was proven to be economically attractive. By combining the membrane filtration (15× concentration) with centrifugation to reach a final concentration of 25% w/v, the energy consumption to harvest P. tricornutum and C. vulgaris was, respectively, as low as 0.84 and 0.77kWh/m(3), corresponding to 1.46 and 1.39 kWh/kg of the harvested biomass.
authors.affiliation: Centre for Surface Chemistry and Catalysis, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 23, Box 2461, 3001 Leuven, Belgium.
authors.forename: M R
authors.initials: MR
authors.lastname: Bilad
authors.forename: V
authors.initials: V
authors.lastname: Discart
authors.forename: D
authors.initials: D
authors.lastname: Vandamme
authors.forename: I
authors.initials: I
authors.lastname: Foubert
authors.forename: K
authors.initials: K
authors.lastname: Muylaert
authors.forename: Ivo F J
authors.initials: IF
authors.lastname: Vankelecom
mesh_terms: D061249:Batch Cell Culture Techniques; D018533:Biomass; D002708:Chlorella / Q000254:growth & development / Q000378:metabolism; D017377:Diatoms / Q000254:growth & development / Q000378:metabolism; D004734:Energy Metabolism; D005374:Filtration / Q000379:methods*; D008280:Magnetics / Q000379:methods*; D008567:Membranes, Artificial; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism; D016062:Porosity; D013499:Surface Properties; D014732:Vibration
chemical_list: D008567:Membranes, Artificial