Abstract
Biogas/biomethane generation from microalgae biomass via anaerobic fermentation is increasingly gaining attention as CO2-neutral energy source. Intensive research has shown, however, that microalgae represent a rather challenging substrate for anaerobic digestion (AD) due to their high cell wall recalcitrance and unfavourable protein content. Previously, the utilization of nitrogen-limited (low-N) microalgal biomass for continuous AD-processes was demonstrated (as proof-of-concept) with remarkable biomethane productivity. The present study shows the efficient portability of the low-N cultivation/fermentation strategy on a robust, wastewater-borne microalga isolate that tolerates high temperature and light conditions and can perfectly cope with microbial contaminations. Continuous long-term anaerobic digestion was characterized by stable and efficient specific biogas and biomethane productivity (765 ± 20 and 478 ± 15 mLNg-1 volatile solids (VS) d-1, respectively), equivalent to volumetric methane productivity of 1912 mLN L-1d-1. The present work underlines the applicability of low-N-biomass of wastewater-borne, robust microalgae as mono-substrate for highly efficient continuous methane generation.
References
Feb 1, 1996·Applied and Environmental Microbiology·J ZhouJ M Tiedje
Jan 1, 1957·Applied Microbiology·C G GOLUEKEH B GOTAAS
Jan 1, 1957·Archiv für Mikrobiologie·L PROVASOLIM R DROOP
Mar 4, 2005·Planta·Maki YamamotoShigeyuki Kawano
Jan 3, 2006·Bioresource Technology·Hong-Wei Yen, David E Brune
Oct 13, 2007·Science·Sabeeha S MerchantArthur R Grossman
Sep 25, 2009·Applied Microbiology and Biotechnology·Peter Weiland
Feb 9, 2010·Nature Biotechnology·Evan StephensBen Hankamer
Aug 10, 2010·Journal of Biotechnology·J H MussgnugO Kruse
Jul 7, 2012·Biotechnology and Bioengineering·Xiuling LiMilada Vítová
Aug 17, 2012·Nature·D Ryan Georgianna, Stephen P Mayfield
Nov 29, 2012·Bioresource Technology·Marieke Vanthoor-KoopmansMichel H M Eppink
Jul 9, 2013·Bioresource Technology·Sebastian SchwedeRoland Span
Dec 3, 2014·Bioresource Technology·Dae-Hyun ChoHee-Sik Kim
May 30, 2015·Journal of Biotechnology·Viktor KlassenOlaf Kruse
Dec 15, 2015·Biotechnology Advances·Rishiram RamananHee-Sik Kim
May 24, 2016·Marine Drugs·Juan Luis FuentesCarlos Vílchez
Jul 28, 2016·Journal of Biotechnology·Viktor KlassenJan H Mussgnug
Feb 6, 2017·International Journal of Phytoremediation·Amit Kumar SinghShashi Kumar
Jul 21, 2017·Biotechnology for Biofuels·Viktor KlassenOlaf Kruse
Nov 15, 2017·Trends in Biotechnology·G P 't LamC van den Berg
May 26, 2018·Bioresource Technology·Lina María González-GonzálezPeer M Schenk
Jul 7, 2018·Microbial Biotechnology·Jie LianDetmer Sipkema
Nov 24, 2018·Planta·Kyle J Lauersen
Jul 25, 2019·Biotechnology for Biofuels·Kashif Mohd ShaikhPannaga Pavan Jutur
Nov 12, 2019·Current Opinion in Biotechnology·Julian WichmannOlaf Kruse