METHOD AND FACILITY FOR PRODUCING METHANE IN A PHOTOBIOREACTOR

Title:

METHOD AND FACILITY FOR PRODUCING METHANE IN A PHOTOBIOREACTOR

Document Type and Number:

WIPO Patent Application WO/2012/032109

Kind Code:

A3

Abstract:

The invention relates to a method for producing methane by culturing algae and methanogenic microorganisms, and to a facility for carrying out the process. The essence of the invention is a photobioreactor which directly generates methane from two zones composed of sunlight and an oxygen-enriched and carbon-dioxide-depleted gas mixture. The reaction is carried out in two sub steps which take place in two different zones. In the first, aerobic part, glycolate is synthesized in algal cells by photosynthesis, and this glycolate is excreted by the cells. The algae form a biofilm on a support material, which biofilm is firstly supplied by nutrients with the aid of a continuous or semicontinuous stream of liquid and secondly transfers the excreted glycolate into the second zone. This compartment is anaerobic due to an oxygen-impermeable membrane and comprises methanogenic bacteria, which directly convert the introduced glycolate into methane.

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Inventors:

WILHELM CHRISTIAN (DE)
POSTEN CLEMENS (DE)
RAEBIGER NORBERT (DE)

Application Number:

PCT/EP2011/065536

Publication Date:

June 28, 2012

Filing Date:

September 08, 2011

Export Citation:

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Assignee:

UNIV LEIPZIG (DE)
SAECHSISCHES INST FUER ANGEWANDTE BIOTECHNOLOGIE AN DER UNI LEIPZIG E V (DE)
KARLSRUHER INST TECHNOLOGIE (DE)
UNIV BREMEN (DE)
WILHELM CHRISTIAN (DE)
POSTEN CLEMENS (DE)
RAEBIGER NORBERT (DE)

International Classes:

C12M1/00; C12M1/113; C12M1/12; C12M1/18; C12N9/02; C12P5/02; C12R1/89

Foreign References:

EP2025759A1	2009-02-18
DE102007031688A1	2009-01-02
US20050109694A1	2005-05-26
ES2027600A6	1992-06-01

Other References:

KEBEISH RASHAD ET AL: "Chloroplastic photorespiratory bypass increases photosynthesis and biomass production in Arabidopsis thaliana", NATURE BIOTECHNOLOGY, NATURE PUBLISHING GROUP, NEW YORK, NY, US, vol. 25, no. 5, 15 April 2007 (2007-04-15), pages 593 - 599, XP009110086, ISSN: 1087-0156, DOI: 10.1038/NBT129

Attorney, Agent or Firm:

KAILUWEIT, Frank et al. (Bamberger Str. 49, Dresden, DE)

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