Cited by 165Algal biology and biofuel productionFluid Dynamics and MixingBioenergy crop production and management

Productivity, carbon dioxide uptake and net energy return of microalgal bubble column photobioreactors

Hulatt, Chris J., Thomas, David N.·2011·Bioresource Technology

Abstract

This work examined the energy return of Chlorella vulgaris and Dunaliella tertiolecta cultivated in a gas-sparged photobioreactor design where the power input for sparging was manipulated (10, 20, and 50 Wm(-3)). Dry weight, organic carbon and heating values of the biomass were measured, plus a suite of variables including Fv/Fm and dissolved oxygen. A model for predicting the higher heating value of microalgal biomass was developed and used to measure the energetic performance of batch cultivations. High power inputs enhanced maximum biomass yields, but did not improve the energy return. Cultivation in 10 Wm(-3) showed up to a 39% higher cumulative net energy return than 50 Wm(-3), and increased the cumulative net energy ratio up to fourfold. The highest net energy ratio for power input was 19.3 (D. tertiolecta, 12% CO(2), 10 Wm(-3)). These systems may be a sustainable method of biomass production, but their effectiveness is sensitive to operational parameters.

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Crossref · 10.1016/j.biortech.2011.02.025

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Authors
Hulatt, C. J., & Thomas, D. N.
Affiliations
Bangor University (GB)
Corresponding author
Hulatt, Chris J.
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2011-05
Volume
102
Issue
10
Pages
5775-5787
ISSN
0960-8524 (ISSN-L)
OpenAlex
W1966855474
Cited by
165
References
36
Citations by year
2026: 2 · 2025: 5 · 2024: 9 · 2023: 6 · 2022: 10 · 2021: 11 · 2020: 15 · 2019: 12 · 2018: 12 · 2017: 13 · 2016: 17 · 2015: 12 · 2014: 10 · 2013: 13 · 2012: 15
FWCI
5.45
Type
journal article
Language
en
Open access
closed
Locations
  • Bioresource Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Engineering and Physical Sciences Research Council
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Engineering › Biomedical Engineering › Fluid Dynamics and Mixing
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
Keywords
bubble column photobioreactor, net energy return, Chlorella vulgaris, Dunaliella tertiolecta, microalgal biomass, higher heating value, CO2 absorption, biomass productivity, Fv/Fm, dissolved oxygen, energy return ratio
MeSH terms
Carbon Dioxide, Energy Metabolism, Equipment Design, Photochemistry, Bioreactors, Microalgae

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