Enhanced production of green tide algal biomass through additional carbon supply

P H De Paula Silva; Nicholas A Paul; R De Nys; L Mata

doi:10.1371/journal.pone.0081164

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Enhanced production of green tide algal biomass through additional carbon supply

Journal article

Open access

Peer reviewed

Enhanced production of green tide algal biomass through additional carbon supply

P H De Paula Silva, Nicholas A Paul, R De Nys and L Mata

PLoS One, Vol.8(12), e81164

2013

DOI: https://doi.org/10.1371/journal.pone.0081164

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Abstract

Intensive algal cultivation usually requires a high flux of dissolved inorganic carbon (Ci) to support productivity, particularly for high density algal cultures. Carbon dioxide (CO2) enrichment can be used to overcome Ci limitation and enhance productivity of algae in intensive culture, however, it is unclear whether algal species with the ability to utilise bicarbonate (HCO3-) as a carbon source for photosynthesis will benefit from CO2 enrichment. This study quantified the HCO 3- affinity of three green tide algal species, Cladophora coelothrix, Cladophora patentiramea and Chaetomorpha linum, targeted for biomass and bioenergy production. Subsequently, we quantified productivity and carbon, nitrogen and ash content in response to CO2 enrichment. All three species had similar high pH compensation points (9.7-9.9), and grew at similar rates up to pH 9, demonstrating HCO3- utilization. Algal cultures enriched with CO2 as a carbon source had 30% more total Ci available, supplying twenty five times more CO2 than the control. This higher Ci significantly enhanced the productivity of Cladophora coelothrix (26%), Chaetomorpha linum (24%) and to a lesser extent for Cladophora patentiramea (11%), compared to controls. We demonstrated that supplying carbon as CO2 can enhance the productivity of targeted green tide algal species under intensive culture, despite their clear ability to utilise HCO 3-. © 2013 de Paula Silva et al.

Details

Title: Enhanced production of green tide algal biomass through additional carbon supply
Authors: P H De Paula Silva (Author) - James Cook University
Nicholas A Paul (Author) - James Cook University
R De Nys (Author) - James Cook University
L Mata (Author) - James Cook University
Publication details: PLoS One, Vol.8(12), e81164; 7
Publisher: Public Library of Science
Date published: 2013
DOI: 10.1371/journal.pone.0081164
ISSN: 1932-6203
Copyright note: Copyright © 2013 de Paula Silva et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450361702621
Output Type: Journal article

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