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Algae-Based Wastewater Treatment for Biofuel Production: Processes, Species, and Extraction Methods

  • Stephen R. Lyon
  • Hossein AhmadzadehEmail author
  • Marcia A. Murry
Chapter
Part of the Biofuel and Biorefinery Technologies book series (BBT, volume 2)

Abstract

This chapter develops the principles and rationale for an algae-based biofuel production coupled to bioremediation of municipal and agricultural wastewaters . A synergistic model for algal wastewater treatment is proposed, which addresses several economic bottlenecks to earlier algal systems and promotes value-added products, including a high-quality effluent in addition to biodiesel to improve the economic feasibility of algal biofuels . Finally, we review candidate species for full-scale algae production ponds based on algal structure, physiology and ecology , and methods for extraction of algal oils for biodiesel production and coproducts. The dominant strains of algae that are commonly found in wastewater ponds, including  Euglenia , Scenedesmus , Selenastrum , Chlorella, and  Actinastrum , are suggested as candidates for large-scale culturing based on their ability to strip nutrients and organic matter from wastewater , grow rapidly, and produce a significant level of algal oil. Oil extraction by supercritical fluid extraction (SFE) is discussed as an efficient means of isolating algal oil and other commercially important high-value compounds from algal biomass . Together with water and CO2 reclamation, such products may shift the economics of algal biomass production to allow production of low-value commodities including biodiesel and biogas.

Keywords

Biochemical Oxygen Demand Supercritical Fluid Extraction Phaeodactylum Tricornutum Tertiary Treatment Euglena Gracilis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgment

H. Ahmadzadeh thanks ATF Committee for the financial support.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Stephen R. Lyon
    • 1
  • Hossein Ahmadzadeh
    • 2
    Email author
  • Marcia A. Murry
    • 3
    • 4
  1. 1.AlgaXperts, LLCMilwaukeeUSA
  2. 2.Department of ChemistryFerdowsi University of MashhadMashhadIran
  3. 3.California State Polytechnic UniversityPomonaUSA
  4. 4.Sinai Technology CorporationLos AngelesUSA

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