Journal
BIORESOURCE TECHNOLOGY
Volume 138, Issue -, Pages 329-338Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.03.175
Keywords
Algae dewatering; Membrane fouling; Microalgae harvesting; Submerged filtration; P. tricornutum
Funding
- KU Leuven [OT 11/061, IDO 06/008]
- Flemish Government [G.0808.10N]
- Federal Government
- KU Leuven Research Coordination Office-Industrial Research Fund (DOC-IOF) project Algae-Tech and bioethanol project [IOF-KP/10/002]
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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 (15x 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 0.77 kW h/m(3), corresponding to 1.46 and 1.39 kW h/kg of the harvested biomass. (C) 2013 Elsevier Ltd. All rights reserved.
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