Using carbon dioxide to maintain an elevated oleaginous microalga concentration in mixed-culture photo-bioreactors

Bioresource Technology
Michael J GiannettoJordan Peccia

Abstract

Microbial contamination of growth reactors is a major concern for microalgal biofuel production. In this study, the oleaginous, CO2-tolerant microalga Scenedesmus dimorphus was combined with a wastewater-derived microbial community and grown in replicated sequencing batch photobioreactors. The reactors were sparged with either ambient air or 20% v/v CO2. In the initial growth cycles, air and the 20% CO2 reactors were similar in terms of growth and microbial community structure. Beyond the fourth growth cycle, however, the ambient air reactors had larger decreases in cell density and growth rate, and increases in species richness and non-algal microorganisms compared to the 20% CO2 reactors. Both qPCR and rDNA sequence analyses demonstrated a greater loss in S. dimorphus enrichment in the ambient-air reactors compared to the 20% CO2 reactors. These results demonstrate that environmental parameters can be used to delay the adverse impacts of microbial contamination in open, mixed-culture microalgae bioreactors.

References

Dec 8, 2005·Applied and Environmental Microbiology·Catherine Lozupone, Rob Knight
Mar 14, 2007·Biotechnology Advances·Yusuf Chisti
Jun 26, 2007·Applied and Environmental Microbiology·Qiong WangJames R Cole
Oct 1, 1965·Science·J L Brooks, S I Dodson
Jun 10, 2008·Current Opinion in Biotechnology·G Charles DismukesMatthew C Posewitz
Dec 22, 2009·Trends in Ecology & Evolution·Val H SmithSharon A Billings
Apr 13, 2010·Nature Methods·J Gregory CaporasoRob Knight
Apr 20, 2010·Current Opinion in Biotechnology·Stuart A ScottAlison G Smith
Aug 17, 2010·Bioinformatics·Robert C Edgar
Sep 14, 2010·Trends in Plant Science·Claire M M GachonGwang Hoon Kim
Feb 1, 2011·BMC Bioinformatics·Christopher QuincePeter J Turnbaugh
Dec 15, 2011·Biotechnology Advances·Man Kee Lam, Keat Teong Lee
Jun 12, 2012·Environmental Science & Technology·Marc Y Menetrez
Jun 26, 2012·Nucleic Acids Research·Andreas UntergasserSteven G Rozen
Sep 14, 2012·Environmental Science & Technology·Marie-Odile P Fortier, Belinda S M Sturm
Nov 30, 2012·Nucleic Acids Research·Christian QuastFrank Oliver Glöckner
Feb 19, 2013·Trends in Biotechnology·Jordan PecciaJulie B Zimmerman
Mar 19, 2013·Bioresource Technology·Gustavo B LeitePatrick C Hallenbeck
Apr 17, 2013·Current Opinion in Chemical Biology·Evan StephensBen Hankamer
Jun 27, 2013·Biotechnology Letters·Alexei Solovchenko, Inna Khozin-Goldberg
Sep 11, 2013·Ecology Letters·Jonathan B ShurinVal H Smith

❮ Previous
Next ❯

Citations

May 27, 2017·Bioprocess and Biosystems Engineering·Husam A Abu HajarBen J Stuart
Mar 5, 2018·Environmental Science and Pollution Research International·Xiaoyu MaQunhui Wang

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.

Related Papers

Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Hai-Feng JinKisay Lee
Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA
Frantisek KastánekVilém Zachleder
© 2021 Meta ULC. All rights reserved