Cobalt enrichment enhances the tolerance of Botryococcus braunii to high concentration of CO2

Pengfei Cheng, Koenraad Muylaert, Jay J. Cheng, Hui Liu, Paul Chen, Min Addy, Chengxu Zhou, Xiaojun Yan, Roger Ruan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This work mainly studied B. braunii adapted to different CO2 concentrations with cobalt enrichment, and developed a process for CO2 capture, hydrocarbon production and cobalt removal. The results showed that B. braunii favored rapid growth at 5.0% (v/v) CO2, and the highest biomass was 1.89 g.L−1 with 4.5 mg.L−1 of cobalt. Hydrocarbon productivity in high concentration CO2 (5.0% and 10.0%) with cobalt enrichment was higher than that in Chu 13 medium. The change in cobalt removal efficiency mainly corresponded to the growth of B. braunii. The LCE of B. braunii in cobalt-rich with high CO2 concentration (5.0% and 10.0%) was 15.7%, and 14.9%, respectively, which was higher than that in normal medium. CO2 fixation rates were also higher in cobalt enrichment coupled with high CO2 concentration. This study not only provides ideas for the removal of toxic metal cobalt, but also has great potential for CO2 biofixation.

Original languageEnglish (US)
Article number122385
JournalBioresource Technology
Volume297
DOIs
StatePublished - Feb 2020

Bibliographical note

Funding Information:
This work was sponsored by National Natural Science Foundation of China ( 31560724 ), the China Postdoctoral Science Foundation ( 2017T100583 , 2016M600616 ), the International Postdoctoral Exchange Fellowship Program ( 20180042 ), the Ningbo Municipal Science and Technology Project ( 2019C10071 ), the Ningbo Municipal Natural Science Foundation ( 431901822 ), the Natural Science Foundation of Jiangxi Province ( 20171BAB214014 ), the K.C. Wong Magna Fund in Ningbo University, Guangzhou Science and Technology Plan ( 201807010056 ), and University of Minnesota Center for Biorefining .

Funding Information:
This work was sponsored by National Natural Science Foundation of China (31560724), the China Postdoctoral Science Foundation (2017T100583, 2016M600616), the International Postdoctoral Exchange Fellowship Program (20180042), the Ningbo Municipal Science and Technology Project (2019C10071), the Ningbo Municipal Natural Science Foundation (431901822), the Natural Science Foundation of Jiangxi Province (20171BAB214014), the K.C. Wong Magna Fund in Ningbo University, Guangzhou Science and Technology Plan (201807010056), and University of Minnesota Center for Biorefining.

Publisher Copyright:
© 2019

Keywords

  • Botryococcus braunii
  • CO biofixation
  • Cobalt enrichment
  • Growth
  • LCE

PubMed: MeSH publication types

  • Journal Article

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