Continuous wet-extraction of hydrocarbon from botryococcus Braunii

Masaki Ota, Yuya Hiraga, Yuichiro Hamano, Fujimaru Hishinuma, Ikuo Ushiki, Takumi Ono, Yoshiyuki Sato, Hiroshi Inomata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Botryococus braunii BOT-22 produces hydrocarbon that is secreted naturally and accumulates in the colony of the strain. To avoid the high energy input and cost of the conventional thermal-drying of algal biomass before hydrocarbon is extracted with organic solvent, a new wet-extraction system was developed to control colony disruption and to recover hydrocarbon effectively. Culture media (biomass slurry) were passed through a capillary nozzle to disrupt algal colonies, then hydrocarbon was rapidly extracted with n-heptane. Quantitative analysis of the extract by gas chro-matography showed that hydrocarbon was more effectively extracted at higher flow rate of biomass slurry. From the available experimental data, a dimensionless parameter of Reynolds number could dominate the extraction efficiency.

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalKagaku Kogaku Ronbunshu
Issue number2
Publication statusPublished - 2018


  • Colony
  • Green algae
  • Hydrocarbon


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