Utilizing Standing Ultrasonic Waves to Harvest Microalgae from a Fluid Suspension
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As a result of dwindling supplies of fossil fuels and increasing environmental concerns significant research is being conducted in the United States and throughout the world in search of a new, abundant source of transportation fuel. One such source is biodiesel derived from microalgae; however, separating microalgal particles from the fluid medium where they are cultivated on an economically feasible scale presents a substantial challenge. Methods like sedimentation and flocculation are highly timeconsuming, and centrifugation requires significant energy input and frequent repairs. Here, the ultrasonic cell separation techniques employed by Jeremy J. Hawkes and others are applied to the specific case of separating microalgae from a fluid medium. Further, the design and fabrication of a filtration apparatus using this technology is documented along with a recommended test procedure.
Loveless, Kolin, 1986- (2010). Utilizing Standing Ultrasonic Waves to Harvest Microalgae from a Fluid Suspension. Texas A&M University. Available electronically from