Cited by 140Algal biology and biofuel productionCarbon Dioxide Capture TechnologiesAquatic Ecosystems and Phytoplankton Dynamics

Carbon Dioxide Mitigation using Thermophilic Cyanobacteria

Ono, E., Cuello, J.L.·2007·Biosystems Engineering

Abstract

Microalgal biofixation of carbon dioxide (CO2) in photobioreactors is a promising strategy for CO2 mitigation, addressing the increased concerns over greenhouse gases (GHG). Previous studies on the subject focused mainly on the use of mesophilic cyanobacteria, not on thermophilic cyanobacteria. The specific objective of this study was to characterise Chlorogleopsis sp. (or SC2), a thermophilic cyanobacterial species collected from the Yellowstone National Park, as a potential candidate species for microalgal CO2 biofixation. The results showed that: (1) the thermophilic SC2 grew very well at the elevated temperature of 50 °C and at an elevated CO2 level of 5% (v/v supplemented); (2) the species also exhibited high light adaptability, growing successfully both under high light intensity (246·1 μmol m-2 s-1) and low light intensity (36·9 μmol m-2 s-1); (3) the optimum light intensity for SC2 among three light intensities tested was 200 μmol m-2 s-1; and (4) the maximum carbon-assimilation rate achieved by SC2 was 20·45 mg [C] l-1 d-1, occurring at 200 μmol m-2 s-1 and at 5% CO2 level, and delivered at the low flow rate condition of 0·002 l [gas] l-1 [medium] min-1. Thus, SC2's high-temperature tolerance, high light adaptability, and reasonably high carbon-assimilation rate make SC2 a promising thermophilic cyanobacteria for use in a CO2-mitigating photobioreactor.

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Crossref · 10.1016/j.biosystemseng.2006.09.010

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  • Cyanobacteria have been applied as bioremediation agents to remove heavy metals from aquatic ecosystems and reduce excess phosphate and nitrate in farmlands.

    “Moreover, cyanobacteria have been applied as bioremediation agents to remove heavy metals from aquatic ecosystems and reduce the excess of phosphate and nitrate in farmlands (Hall et al. 1995; Ono and Cuello 2007).”

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Authors
Ono, E., & Cuello, J. L.
Affiliations
University of Arizona (US)
Venue
Biosystems Engineering
Publisher
Elsevier BV
Published
2007-01
Volume
96
Issue
1
Pages
129-134
ISSN
1537-5110 (ISSN-L)
OpenAlex
W1990731304
Cited by
140
References
14
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 2 · 2022: 4 · 2021: 9 · 2020: 11 · 2019: 11 · 2018: 2 · 2017: 10 · 2016: 10 · 2015: 9 · 2014: 11 · 2013: 9 · 2012: 15
FWCI
2.83
Type
journal article
Language
en
Open access
closed
Locations
Biosystems Engineering (publishedVersion)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
thermophilic cyanobacteria, CO2 biofixation, CO2 emission reduction, photobioreactors, heat tolerance, greenhouse gas emissions reduction, microalgae

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