Continuous production of extracellular ultrafine calcite particles by the marine coccolithophorid alga Pleurochrysis carterae

Hiroyuki Takano, Jaekuk Jeon, J. Grant Burgess, Eichi Manabe, Yoshito Izumi, Megumi Okazaki, Tadashi Matsunaga

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Abstract

A new procedure for the production of ultrafine calcite particles by the marine coccolithophorid alga Pleurochrysis carterae is reported. During continuous culture, calcite particles (coccoliths) were detached from the cell surface by optimized air-bubbling, which greatly reduced the damage associated with previous sonication methods. Detached calcite particles could be continuously recovered directly from the culture medium using a nylon mesh membrane filtration module. Cells remained viable and continued to produce coccoliths during culture. The optimum productivity of ultrafine calcite particles was 18 mg/l per day. These results demonstrate the potential for a continuous system for the photosynthetically driven removal of CO2 and its fixation into ultrafine inorganic calcite particles.

Original languageEnglish
Pages (from-to)946-950
Number of pages5
JournalApplied Microbiology and Biotechnology
Volume40
Issue number6
DOIs
Publication statusPublished - 1994 Feb
Externally publishedYes

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ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

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