Harvesting economics and strategies using centrifugation for cost effective separation of microalgae cells for biodiesel applications.

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  • Author(s): Dassey AJ;Dassey AJ; Theegala CS
  • Source:
    Bioresource technology [Bioresour Technol] 2013 Jan; Vol. 128, pp. 241-5. Date of Electronic Publication: 2012 Oct 23.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Applied Science Country of Publication: England NLM ID: 9889523 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-2976 (Electronic) Linking ISSN: 09608524 NLM ISO Abbreviation: Bioresour Technol Subsets: MEDLINE
    • Publication Information:
      Original Publication: Barking, Essex, England : New York, N.Y. : Elsevier Applied Science ; Elsevier Science Pub. Co., 1991-
    • Subject Terms:
      Biofuels/*economics ; Biofuels/*microbiology ; Cell Separation/*economics ; Cell Separation/*instrumentation ; Centrifugation/*economics ; Centrifugation/*instrumentation ; Microalgae/*isolation & purification; Cost-Benefit Analysis ; United States
    • Abstract:
      Inefficient or energy-intensive microalgal harvesting strategies for biodiesel production have been a major setback in the microalgae industry. Harvesting by centrifugation is generally characterized by high capture efficiency (>90%) under low flow rates and high energy consumption. However, results from the present study demonstrated that by increasing the flow rates (>1L/min), the lower capture efficiencies (<90%) can be offset by the larger volumes of culture water processed through the centrifuge, resulting in net lower energy consumption. Energy consumption was reduced by 82% when only 28.5% of the incoming algal biomass was harvested at a rate of 18 L/min by centrifugation. Harvesting algal species with a high lipid content and high culture density could see harvesting costs of $0.864/L oil using the low efficiency/high flow rate centrifugation strategy as opposed to $4.52/L oil using numbers provided by the Department of Energy for centrifugation harvesting.
      (Copyright © 2012 Elsevier Ltd. All rights reserved.)
    • Accession Number:
      0 (Biofuels)
    • Publication Date:
      Date Created: 20121201 Date Completed: 20130625 Latest Revision: 20220409
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/j.biortech.2012.10.061
    • Accession Number:
      23196245