| Influence of magnetic field on activity of given anaerobic sludge. | |
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MedLine Citation:
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PMID: 19543694 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two modes of magnetic fields were applied in the Cr(6+) removal sludge reactors containing two predominated strains--Bacillus sp. and Brevibacillus sp., respectively. The magnetic field mode I* of 0-4.5 or 0-14 mT between pieces was obtained by setting the magnetic pieces with the surface magnetic density of 0-6 or 0-20 mT into the reactor, and the magnetic field mode II* of 6, 20, or 40 mT on the return line was obtained by controlling the working distance of the permanent magnet outside the sludge return line. The effects of different magnetic fields on the activity of the given anaerobic sludge were studied by comparing with the control (absent of magnetic field). The results showed that the magnetic field of 0-4 mT improved the activity of given sludge most effectively, U(max) CH(4) (the peak methane-producing rate) and the methane producing volume per gCOD(Cr) reached 64.3 mlCH(4)/gVSS.d and 124 mlCH(4)/gCOD(Cr), which increased by 20.6 and 70.7%, respectively, compared with the control. And the magnetic field of 20 mT took second place. It could be concluded that the input of some magnetic field could improve the activity of anaerobic sludge by increasing the transformation efficiency of COD(Cr) matters to methane, and the total organic wastage did not increase. |
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Authors:
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Y B Xu; X J Duan; J N Yan; Y Y Du; S Y Sun |
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Publication Detail:
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Type: Journal Article Date: 2009-06-19 |
Journal Detail:
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Title: Biodegradation Volume: 20 ISSN: 1572-9729 ISO Abbreviation: Biodegradation Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-10-08 Completed Date: 2010-01-12 Revised Date: 2010-03-13 |
Medline Journal Info:
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Nlm Unique ID: 9100834 Medline TA: Biodegradation Country: Netherlands |
Other Details:
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Languages: eng Pagination: 875-83 Citation Subset: IM |
Affiliation:
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Faculty of Environmental Science and Engineering, Guangdong University of Technology, 510006 Guangzhou, China. hopeybxu@tom.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Anaerobiosis Bioreactors / microbiology Magnetics* Methane / metabolism Oxygen / isolation & purification Sewage / microbiology* Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Sewage; 74-82-8/Methane; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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