EP 1984098 A1 20081029 - CO2 CAPTURE AND USE IN ORGANIC MATTER DIGESTION FOR METHANE PRODUCTION
Title (en)
CO2 CAPTURE AND USE IN ORGANIC MATTER DIGESTION FOR METHANE PRODUCTION
Title (de)
ABFANGUNG VON CO2 UND VERWENDUNG BEIM ABBAU VON ORGANISCHEM MATERIAL FÜR DIE PRODUKTION VON METHAN
Title (fr)
CAPTURE DE CO2 ET UTILISATION DANS LA DIGESTION DE MATIERE ORGANIQUE EN VUE DE LA PRODUCTION DE METHANE
Publication
Application
Priority
- EP 2006003041 W 20060404
- IT BO20050217 A 20050408
Abstract (en)
[origin: WO2006108532A1] A process to provide an alternative to CO<SUB>2</SUB> sequestration in depleted gas or oil fields is presented. An integrated process combining a first module, for capturing and separating CO<SUB>2</SUB> from exhaust gases, with a second module, for exploiting the captured CO<SUB>2</SUB> in the anaerobic digestion of organic matter to produce methane, is provided. In the first module CO<SUB>2</SUB> is removed from the exhaust gas by contact and mass transfer to an alkaline metal solution and more particularly of sodium. The CO<SUB>2</SUB> dissolved in the solution is rapidly hydrated into carbonic acid by means of carbonic anhydrase which is immobilized onto an inert support. Finally, the hydrated CO<SUB>2</SUB> is then reacted with alkaline metal and upon adding alkaline metal carbonate to the solution, a precipitate of alkaline bicarbonate is obtained, which is then calcinated to produce a concentrated flow of CO<SUB>2</SUB>. In the second module such concentrated flow of CO<SUB>2</SUB> is used to provide a perfectly suitable environment for the hydrolysis of organic matter and for hydrogen production in distinct and specialized sections aimed at acidification and fermentation respectively; at the same time mixed and high density microbial populations, already there or selectively added to the fermentation process, are being conditioned to utilize CO<SUB>2</SUB> and hydrogen to increase the production of acetates and consequently of methane. The outlined process may be used e.g. by greenhouse gas emitting firms as well as by those involved in organic waste management.
IPC 8 full level
B01D 53/84 (2006.01); B01D 53/62 (2006.01); C01B 32/50 (2017.01); C01B 32/60 (2017.01); C01D 7/10 (2006.01); C01D 7/12 (2006.01); C12P 5/02 (2006.01); C12P 7/54 (2006.01)
CPC (source: EP)
B01D 53/62 (2013.01); B01D 53/84 (2013.01); C01D 7/10 (2013.01); C01D 7/123 (2013.01); C12M 21/04 (2013.01); C12M 23/58 (2013.01); C12M 29/26 (2013.01); C12M 43/04 (2013.01); C12P 5/023 (2013.01); Y02A 50/20 (2017.12); Y02C 20/20 (2013.01); Y02C 20/40 (2020.08); Y02E 50/30 (2013.01); Y02P 20/10 (2015.11); Y02P 20/151 (2015.11); Y02P 20/59 (2015.11)
Citation (search report)
See references of WO 2006108532A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006108532 A1 20061019; EP 1984098 A1 20081029; IT BO20050217 A1 20061009
DOCDB simple family (application)
EP 2006003041 W 20060404; EP 06723998 A 20060404; IT BO20050217 A 20050408