Effect of temperature control on green algae grown under continuous culture
Abstract
The large-scale cultivation of algae of commercial value requires a variety of important energy-related inputs to achieve the proposed yields required for economic viability. One specific energy input of interest is temperature control and the associated costs of this control, both in terms of initial capital investment and costs associated with continued cooling or heating. In this work, the green algae Neochloris oleoabundans and Scenedesmus dimorphus were grown in tightly-controlled turbidostat-based photobioreactors to determine the potential benefits of temperature control for biomass production of these organisms versus allowing these cultures to experience temperature fluctuations similar to what would be found in uncontrolled, outdoor open ponds or closed bioreactors. The results of these studies indicate stark differences between these two strains, with N. oleoabundans yielding improved growth rates under conditions of stringent temperature control at 22 °C, while S. dimorphus yielded slightly higher growth under conditions where temperature was allowed to fluctuate based on modeled natural temperature profiles. Further analysis reveals that the utilization of non-conventional temperature profiles could enhance growth yields further for N. oleoabundans, allowing it to overcome the detrimental effects of the natural temperature fluctuation. These results and a discussion of the potential for turbidostat-based algal culture growthmore »
- Authors:
-
- Univ. of Minnesota, Minneapolis, MN (United States)
- Publication Date:
- Research Org.:
- Montana State Univ., Bozeman, MT (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
- OSTI Identifier:
- 1613542
- Grant/Contract Number:
- FG36-08GO18161
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Algal Research
- Additional Journal Information:
- Journal Volume: 35; Journal ID: ISSN 2211-9264
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES
Citation Formats
Knutson, Carolann M., McLaughlin, Evelyn M., and Barney, Brett M. Effect of temperature control on green algae grown under continuous culture. United States: N. p., 2018.
Web. doi:10.1016/j.algal.2018.08.020.
Knutson, Carolann M., McLaughlin, Evelyn M., & Barney, Brett M. Effect of temperature control on green algae grown under continuous culture. United States. https://doi.org/10.1016/j.algal.2018.08.020
Knutson, Carolann M., McLaughlin, Evelyn M., and Barney, Brett M. Fri .
"Effect of temperature control on green algae grown under continuous culture". United States. https://doi.org/10.1016/j.algal.2018.08.020. https://www.osti.gov/servlets/purl/1613542.
@article{osti_1613542,
title = {Effect of temperature control on green algae grown under continuous culture},
author = {Knutson, Carolann M. and McLaughlin, Evelyn M. and Barney, Brett M.},
abstractNote = {The large-scale cultivation of algae of commercial value requires a variety of important energy-related inputs to achieve the proposed yields required for economic viability. One specific energy input of interest is temperature control and the associated costs of this control, both in terms of initial capital investment and costs associated with continued cooling or heating. In this work, the green algae Neochloris oleoabundans and Scenedesmus dimorphus were grown in tightly-controlled turbidostat-based photobioreactors to determine the potential benefits of temperature control for biomass production of these organisms versus allowing these cultures to experience temperature fluctuations similar to what would be found in uncontrolled, outdoor open ponds or closed bioreactors. The results of these studies indicate stark differences between these two strains, with N. oleoabundans yielding improved growth rates under conditions of stringent temperature control at 22 °C, while S. dimorphus yielded slightly higher growth under conditions where temperature was allowed to fluctuate based on modeled natural temperature profiles. Further analysis reveals that the utilization of non-conventional temperature profiles could enhance growth yields further for N. oleoabundans, allowing it to overcome the detrimental effects of the natural temperature fluctuation. These results and a discussion of the potential for turbidostat-based algal culture growth are presented.},
doi = {10.1016/j.algal.2018.08.020},
journal = {Algal Research},
number = ,
volume = 35,
place = {United States},
year = {Fri Sep 07 00:00:00 EDT 2018},
month = {Fri Sep 07 00:00:00 EDT 2018}
}
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Cited by: 7 works
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Figure 1: Schematic of the turbidostat system.
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Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.