| Anaerobic digestion of macroalgae: methane potentials, pre-treatment, inhibition and co-digestion. | |
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MedLine Citation:
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PMID: 22335117 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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In the present study we tested four macroalgae species--harvested in Denmark--for their suitability of bioconversion to methane. In batch experiments (53 degrees C) methane yields varied from 132 ml g volatile solids(-1) (VS) for Gracillaria vermiculophylla, 152 mi gVS(-1) for Ulva lactuca, 166 ml g VS(-1) for Chaetomorpha linum and 340 ml g VS(-1) for Saccharina latissima following 34 days of incubation. With an organic content of 21.1% (1.5-2.8 times higher than the other algae) S. latissima seems very suitable for anaerobic digestion. However, the methane yields of U. lactuca, G. vermiculophylla and C. linum could be increased with 68%, 11% and 17%, respectively, by pretreatment with maceration. U. lactuca is often observed during 'green tides' in Europe and has a high cultivation potential at Nordic conditions. Therefore, U. lactuca was selected for further investigation and co-digested with cattle manure in a lab-scale continuously stirred tank reactor. A 48% increase in methane production rate of the reactor was observed when the concentration of U. lactuca in the feedstock was 40% (VS basis). Increasing the concentration to 50% had no further effect on the methane production, which limits the application of this algae at Danish centralized biogas plant. |
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Authors:
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H B Nielsen; S Heiske |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Water science and technology : a journal of the International Association on Water Pollution Research Volume: 64 ISSN: 0273-1223 ISO Abbreviation: Water Sci. Technol. Publication Date: 2011 |
Date Detail:
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Created Date: 2012-02-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9879497 Medline TA: Water Sci Technol Country: England |
Other Details:
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Languages: eng Pagination: 1723-9 Citation Subset: IM |
Affiliation:
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Risø DTU, Biosystems Division, National laboratory for Sustainable Energy, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde, Denmark. jeej@risoe.dtu.dk |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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