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DOI: 10.5445/IR/1000072959

Highly efficient methane generation from untreated microalgae biomass

Klassen, Viktor; Blifernez-Klassen, Olga; Wibberg, Daniel; Winkler, Anika; Kalinowski, Jörn; Posten, Clemens; Kruse, Olaf

Abstract:
Background: The fact that microalgae perform very efficiently photosynthetic conversion of sunlight into chemical energy has moved them into the focus of regenerative fuel research. Especially, biogas generation via anaerobic digestion is economically attractive due to the comparably simple apparative process technology and the theoretical possibility of converting the entire algal biomass to biogas/methane. In the last 60 years, intensive research on biogas production from microalgae biomass has revealed the microalgae as a rather challenging substrate for anaerobic digestion due to its high cell wall recalcitrance and unfavorable protein content, which requires additional pretreatment and co-fermentation strategies for sufficient fermentation. However, sustainable fuel generation requires the avoidance of cost/energy intensive biomass pretreatments to achieve positive net-energy process balance.

Results: Cultivation of microalgae in replete and limited nitrogen culture media conditions has led to the formation of protein-rich and low protein biomass, respectively, with the last being especially optimal for continuous fermentati ... mehr


Zugehörige Institution(en) am KIT Institut für Bio- und Lebensmitteltechnik (BLT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 1754-6834
URN: urn:nbn:de:swb:90-729593
KITopen ID: 1000072959
HGF-Programm 35.13; LK 01
Erschienen in Biotechnology for biofuels
Band 10
Heft 1
Seiten Art. Nr. 186
Schlagworte Biofuel, Biogas, Methane, Microalgae monosubstrate, Nitrogen limitation, Continuous anaerobic fermentation/digestion, Maximal energy conversion efficiency, Microbial community, Ammonia/ammonium inhibition
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