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1. (WO2018179082) ALGAE CONCENTRATION METHOD AND ALGAE CONCENTRATION APPARATUS

Pub. No.:    WO/2018/179082    International Application No.:    PCT/JP2017/012614
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 29 01:59:59 CEST 2017
IPC: C12N 1/02
C12M 1/02
C12M 1/06
Applicants: JGC CORPORATION
日揮株式会社
Inventors: NAKAYAMA, Takashi
中山 喬
Title: ALGAE CONCENTRATION METHOD AND ALGAE CONCENTRATION APPARATUS
Abstract:
[Problem] To provide an algae concentration method and so forth that can obtain concentrated algae from a starting liquid in which algae are dispersed in water, while restraining the effects on an oil extraction process in a later stage. [Solution] To obtain concentrated algae from a starting liquid containing algae and water, in a mixing step, the starting liquid is stirred and mixed with gas and an extractant liquid that is poorly soluble in water and that can extract lipid from algal cells, to produce a mixture containing bubbles, algae, lipid, the extractant liquid, and water. In a degassing step, the gas present in the mixture is degassed. In a phase separation step, the degassed mixture is subjected to phase separation into an extraction liquid phase containing an extraction liquid into which lipid soluble in the extractant liquid has been extracted, a scum phase containing algae and lipid that is poorly soluble in the extractant liquid, and a water phase. In a scum take-off step, scum is taken off, as concentrated algae, from the scum phase.