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    A Comparison of Outdoor Mixed Cultures Versus Monocultures of Nannochloropsis salina and Phaeodactylum tricornutum for Biofuel Application

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    Date Issued
    2017-05
    Author
    Konkle, Brooke
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    URI
    http://hdl.handle.net/1969.6/4408
    Abstract
    Microalgae have been identified as a potential chemical source for biofuels, but production costs still greatly limit this industry. The purpose of this study was to determine the efficiency of mixed algal cultures containing two species of microalgae, Nannochloropsis salina and Phaeodactylum tricornutum, in comparison to their respective monocultures. The respective microalgae cultures were grown in 557L experimental tanks with harvests performed every 3-7 days, i.e., after growth had reached the stationary phase, for a period of 90 days. Microalgae biomass (g/m2), productivity (g/m2/day), and nutrient utilization were analyzed with respect to treatment and different temperatures. The average biomass of the mixed culture treatment (39.81 g/m2) was significantly (p=1.04 x 10-5) greater compared to the P. tricornutum monoculture treatment (35.57 g/m2) but was not significantly different from the N. salina monoculture treatment (39.4 g/m2). Observations of biological contamination do not support the hypothesis that contamination would be less in mixed cultures, as this treatment experienced the highest average contamination levels.
    Description
    A thesis Submitted In Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE in FISHERIES AND MARICULTURE from Texas A&M University- Corpus Christi in Corpus Christi, Texas.
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    This material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher.
    Konkle, Brooke
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