Journal article
Using CO2 to enhance carbon capture and biomass applications of freshwater macroalgae
GCB Bioenergy, Vol.6(6), pp.637-645
2014
Abstract
A major limiting factor in the development of algae as a feedstock for the bioenergy industry is the consistent production and supply of biomass. This study is the first to access the suitability of the freshwater macroalgal genus Oedogonium to supply biomass for bioenergy applications. Specifically, we quantified the effect of CO2 supplementation on the rate of biomass production, carbon capture, and feedstock quality of Oedogonium when cultured in large-scale outdoor tanks. Oedogonium cultures maintained at a pH of 7.5 through the addition of CO2 resulted in biomass productivities of 8.33 (±0.51) g DW m-2 day-1, which was 2.5 times higher than controls which had an average productivity of 3.37 (±0.75) g DW m-2 day-1. Under these productivities, Oedogonium had a carbon content of 41-45% and a higher heating value of 18.5 MJ kg-1, making it an ideal biomass energy feedstock. The rate of carbon fixation was 1380 g C m-2 yr-1 and 1073.1 g C m-2 yr-1 for cultures maintained at a pH of 7.5 and 8.5, and 481 g C m-2 yr-1 for cultures not supplemented with CO2. This study highlights the potential of integrating the large-scale culture of freshwater macroalgae with existing carbon waste streams, for example coal-fired power stations, both as a tool for carbon sequestration and as an enhanced and sustainable source of bioenergy. © 2013 John Wiley & Sons Ltd.
Details
- Title
- Using CO2 to enhance carbon capture and biomass applications of freshwater macroalgae
- Authors
- A J Cole (Author) - James Cook UniversityL Mata (Author) - James Cook UniversityNicholas A Paul (Author) - James Cook UniversityR de Nys (Author) - James Cook University
- Publication details
- GCB Bioenergy, Vol.6(6), pp.637-645
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2014
- DOI
- 10.1111/gcbb.12097
- ISSN
- 1757-1693
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99451027902621
- Output Type
- Journal article
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- Agronomy
- Biotechnology & Applied Microbiology
- Energy & Fuels
- Environmental Sciences
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Source: InCites