Seawater supplemented with bicarbonate for efficient marine microalgae production in floating photobioreactor on ocean: A case study of Chlorella sp

The Science of the Total Environment
Xiaoqian ZhaiZhanyou Chi

Abstract

Cultivation of microalgae on ocean provides a promising way to produce massive biomass without utilizing limited land space, and using seawater as culture medium can avoid consumption of valuable fresh water. Bicarbonate is proved as a better approach for carbon supply in microalgae cultivation, but Ca2+ and Mg2+ in seawater is subjected to precipitate with carbonate derived from it. In this study, cultivation with this medium for a marine Chlorella sp. resulted in productivity of 0.470 g L-1 day-1, despite of continual precipitation caused by increased pH due to bicarbonate consumption. Actually, this precipitation is favorable, since it can work as a flocculation harvesting method for microalgae. The highest flocculation efficiency of 98.9 ± 0.0% was observed in cultures with 7.0 g L-1 NaHCO3, which was higher than that of cultures without bicarbonate (44.1 ± 0.2%). Additionally, the spent medium after flocculation supported better growth (1.60 ± 0.0 g L-1) than the fresh medium (1.26 ± 0.0 g L-1). Outdoor cultivation with floating photobioreactor on ocean resulted in the productivity of 0.190 g L-1 day-1, which was higher than that in land-based culture systems. The floating system also benefited from better temperature cont...Continue Reading

References

Jul 22, 2011·Trends in Biotechnology·Zhanyou ChiShulin Chen
Oct 13, 2011·Bioprocess and Biosystems Engineering·Sang-Jin ParkJi-Won Yang
Dec 15, 2011·Biotechnology Advances·Man Kee Lam, Keat Teong Lee
Feb 19, 2013·Bioresource Technology·Mohammad Sadegh FaridBagher Anvaripour
Jul 28, 2013·Journal of Biotechnology·Yusuf Chisti
Dec 11, 2013·Bioprocess and Biosystems Engineering·Jungmin KimJi-Won Yang
Dec 4, 2014·Bioresource Technology·Wasif FarooqJi-Won Yang
Aug 28, 2015·Bioresource Technology·Dries VandammeKoenraad Muylaert
Sep 26, 2015·Bioresource Technology·Ioannis DogarisGeorge Philippidis
Dec 13, 2017·Current Opinion in Biotechnology·Yoshiaki MaedaTsuyoshi Tanaka
Mar 30, 2019·Biotechnology for Biofuels·Chenba ZhuHaibo Cai
Jul 10, 2019·Trends in Plant Science·Jennifer YarnoldBen Hankamer

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Citations

Nov 24, 2020·Frontiers in Microbiology·Jiu-Qiang XiongShaoguo Ru
Jul 31, 2021·Trends in Biotechnology·Chenba ZhuZhanyou Chi

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