Biogas production from Macrocystis pyrifera biomass in seawater system

Bioresource Technology
Xiaolei FanXiaoxian Zhao

Abstract

Marine sediments from littoral and sublittoral location were evaluated as inocula for methane production from anaerobic fermentation of Macrocystis pyrifera in seawater system. Littoral sediment showed the higher methanogenetic activity from acetate and resulted in a higher biomethane yield of 217.1±2.4mL/g-VS, which was comparable with that reported in freshwater system with desalted seaweeds. With 0.8mM sodium molybdate added, both the maximal methane yield and concentration increased while the lag-time was greatly shortened, suggesting that sulfate was one of the major inhibitors. Microbial community analysis revealed that degradation of M. pyrifera needed cooperation of very complex microbial populations. Hydrogenotrophic methanogens had an absolute dominance in distribution compared with the acetotrophic ones, indicating syntrophic acetate oxidation coupled to hydrogenotrophic methanogenesis might play important roles in the thalassic anaerobic fermentation system. These results clearly showed that biomethane production of raw seaweeds in seawater system was feasible.

References

Jun 11, 1982·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·H J Laanbroek, H Veldkamp
Aug 12, 2000·International Journal of Systematic and Evolutionary Microbiology·S HattoriH Shoun
Aug 1, 2002·International Journal of Systematic and Evolutionary Microbiology·Melike BalkAlfons J M Stams
Nov 11, 2006·Journal of Hazardous Materials·Sílvia N MedírcioMônica C Teixeira
Apr 3, 2007·Bioresource Technology·Ye ChenKurt S Creamer
Sep 10, 2011·Bioinformatics·Tanja Magoč, Steven L Salzberg
Apr 12, 2013·Proceedings of the National Academy of Sciences of the United States of America·Jason A PeifferRuth E Ley
Dec 4, 2014·Systematic and Applied Microbiology·Jiwen LiuXiao-Hua Zhang

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.

Archaeogenetics

Recent advances in genomic sequencing has led to the discovery of new strains of Archaea and shed light on their evolutionary history. Discover the latest research on Archaeogenetics here.