| Ammonia removal from anaerobic digestion effluent of livestock waste using green alga Scenedesmus sp. | |
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MedLine Citation:
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PMID: 20663665 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The green alga Scenedesmus was investigated for its ability to remove nitrogen from anaerobic digestion effluent possessing high ammonium content and alkalinity in addition to its growth characteristics. Nitrate and ammonium were indistinguishable as a nitrogen source when the ammonium concentration was at normal cultivation levels. Ammonium up to 100ppm NH(4)-N did not inhibit cell growth, but did decrease final cell density by up to 70% at a concentration of 200-500ppm NH(4)-N. Inorganic carbon of alkalinity in the form of bicarbonate was consumed rapidly, in turn causing the attenuation of cell growth. Therefore, maintaining a certain level of inorganic carbon is necessary in order to prolong ammonia removal. A moderate degree of aeration was beneficial to ammonia removal, not only due to the stripping of ammonium to ammonia gas but also due to the stripping of oxygen, which is an inhibitor of regular photosynthesis. Magnesium is easily consumed compared to other metallic components and therefore requires periodic supplementation. Maintaining appropriate levels of alkalinity, Mg, aeration along with optimal an initial NH(4)(+)/cell ratio were all necessary for long-term semi-continuous ammonium removal and cell growth. |
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Authors:
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Jongmin Park; Hai-Feng Jin; Byung-Ran Lim; Ki-Young Park; Kisay Lee |
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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: Bioresource technology Volume: 101 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-08-02 Completed Date: 2011-01-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 8649-57 Citation Subset: IM |
Affiliation:
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Dept. of Environmental Engineering and Biotechnology, Myongji University, Yongin, Republic of Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Agriculture
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methods Ammonia / isolation & purification, metabolism* Anaerobiosis / physiology Animals Biodegradation, Environmental Industrial Waste / prevention & control* Livestock Scenedesmus / metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Industrial Waste; 7664-41-7/Ammonia |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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