Cultivation of Ulva lactuca with manure for simultaneous bioremediation and biomass production

The potential of liquid manure as sole nutrient source for cultivation of Ulva lactuca was investigated with the perspective of utilizing the produced biomass for feed and/or energy. Algae grown with manure demonstrated equal growth rates to algae grown with standard f/2-medium. The optimum manure c...

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Bibliographic Details
Published in:Journal of applied phycology 2012-06, Vol.24 (3), p.449-458
Main Authors: Nielsen, Mette Møller, Bruhn, Annette, Rasmussen, Michael Bo, Olesen, Birgit, Larsen, Martin M, Møller, Henrik B
Format: Article
Language:English
Subjects:
amino acids
anaerobic digestion
bioenergy
biomass production
Biomedical and Life Sciences
bioremediation
carbon
Ecology
energy
feed supplements
Freshwater & Marine Ecology
Life Sciences
liquid manure
nitrogen
nitrogen content
phosphorus
Plant Physiology
Plant Sciences
proteins
Ulva lactuca
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Summary:The potential of liquid manure as sole nutrient source for cultivation of Ulva lactuca was investigated with the perspective of utilizing the produced biomass for feed and/or energy. Algae grown with manure demonstrated equal growth rates to algae grown with standard f/2-medium. The optimum manure concentration, expressed as ammonium concentration, was 25 μM. At these conditions, the biomass produced was potentially suitable for anaerobic digestion, due to a relative high carbon/nitrogen ratio (approximately 19). At higher manure concentrations, tissue concentrations of nitrogen, phosphorus, proteins, and amino acids increased, making the biomass less suitable for anaerobic digestion but potentially interesting as a feed supplement. Cultivating U. lactuca with manure as nutrient source has potential in terms of bioremediation as well as production of bioenergy and protein-feed.
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-011-9767-z