Title:
METHOD OF CULTURING ALGA AND ALGA CULTURE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/054932
Kind Code:
A1
Abstract:
The present invention provides a method of culturing an alga and an alga culture system that enable practical realization of low-cost and space-saving production of biofuels and bioenergy. According to the present invention, an alga is cultured by using a reaction tank, said reaction tank being provided with a digestive solution tank holding a digestive solution containing high-concentration nutrient salts, a membrane having a pore size of 0.45 μm or less and a culture tank holding a culture solution and the alga, maintaining the difference in the nutrient salt concentration between the digestion solution tank and the culture tank by allowing the alga in the culture tank to consume the nutrient salts, and supplying the nutrient salts contained in the digestion solution to the culture solution through the membrane by means of concentration diffusion.
Inventors:
SATO MASAHIRO (JP)
NAKASHIMA TAKUMI (JP)
ISHII KAZUEI (JP)
OCHIAI SATORU (JP)
NAKASHIMA TAKUMI (JP)
ISHII KAZUEI (JP)
OCHIAI SATORU (JP)
Application Number:
PCT/JP2021/033429
Publication Date:
March 17, 2022
Filing Date:
September 10, 2021
Export Citation:
Assignee:
UNIV HOKKAIDO NAT UNIV CORP (JP)
International Classes:
C12N1/12; C12M1/00; B01D61/24; B01D69/00
Foreign References:
| JP2007330215A | 2007-12-27 | |||
| US20160075981A1 | 2016-03-17 | |||
| US20130052719A1 | 2013-02-28 | |||
| CN106219871A | 2016-12-14 |
Other References:
LIU, XIN ET AL: "P-H03: Microalgae cultivation by anaerobic fermentation digestion liquid with nitrification processing and membrane filtration.", LECTURES OF THE 52ND JAPAN SOCIETY ON WATER ENVIRONMENT, JAPAN SOCIETY ON WATER ENVIRONMENT., JP, vol. 52, 9 March 2018 (2018-03-09), JP, pages 593, XP009534999
TAKUMI NAKAJIMA ET AL.: "Study on separation of color components and nutrients of bovine manure methane fermentation digestive juice using microfiltration membrane for indigenous microalgae culture", THE 31ST SOCIETY FOR WASTE RESOURCE RECYCLING RESEARCH PRESENTATION, 16-18 AUGUST 2020, JP., 21 August 2020 (2020-08-21) - 18 September 2020 (2020-09-18), JP, pages 215 - 216, XP009535001
TAKUMI NAKAJIMA: "Study on separation of color components and nutrients of bovine manure methane fermentation digestive juice using microfiltration membrane for indigenous microalgae culture", PROCEEDINGS OF THE 48TH ENVIRONMENTAL SYSTEMS RESEARCH PAPER PRESENTATION, 17 OCTOBER 2020, vol. 48, 17 October 2020 (2020-10-17), pages 23 - 27, XP055911195, DOI: PROCEEDINGS OF THE 48TH ENVIRONMENTAL SYSTEMS RESEARCH PAPER PRESENTATION, 17 OCTOBER 202
TAKUMI NAKAJIMA ET AL.: "Study on separation of color components and nutrients of bovine manure methane fermentation digestive juice using microfiltration membrane for indigenous microalgae culture", THE 31ST SOCIETY FOR WASTE RESOURCE RECYCLING RESEARCH PRESENTATION, 16-18 AUGUST 2020, JP., 21 August 2020 (2020-08-21) - 18 September 2020 (2020-09-18), JP, pages 215 - 216, XP009535001
TAKUMI NAKAJIMA: "Study on separation of color components and nutrients of bovine manure methane fermentation digestive juice using microfiltration membrane for indigenous microalgae culture", PROCEEDINGS OF THE 48TH ENVIRONMENTAL SYSTEMS RESEARCH PAPER PRESENTATION, 17 OCTOBER 2020, vol. 48, 17 October 2020 (2020-10-17), pages 23 - 27, XP055911195, DOI: PROCEEDINGS OF THE 48TH ENVIRONMENTAL SYSTEMS RESEARCH PAPER PRESENTATION, 17 OCTOBER 202
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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