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231223s2007 xx ||||| 00| ||eng c |
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|a (NLM)17469661
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Muller, Christopher D
|e verfasserin
|4 aut
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|a Application of mechanical shear in an internal-recycle for the enhancement of mesophilic anaerobic digestion
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
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|2 rdamedia
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|2 rdacarrier
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|a Date Completed 24.05.2007
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|a Date Revised 22.09.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a A combination of bench- and full-scale studies were conducted to determine the effectiveness of high-intensity mechanical shear in an internal recycle loop to enhance mesophilic anaerobic digestion and the implications of this process for routine operations of a digestion system. During short-term batch digestion (56 hours), a 46% increase in biogas production was observed. However, it was found that the degree of digestion enhancement was sludge-specific, with increases in volatile solids destruction ranging from 16.6 to 110%. A full-scale demonstration showed increased total and volatile solids destruction of 22 and 21% for the primary digester and 17.2 and 11% for the secondary digester, respectively. The data also suggest that increased protein degradation is one of the major mechanisms associated with the observed increases in volatile solids destruction. The full-scale demonstration also determined that shear enhanced digestion can be operated without process upset, based on volatile fatty acid profile and headspace biogas composition (methane and carbon dioxide). Dewatering properties, as measured by polymer demand, deteriorated in the primary digester, but there was improvement in the secondary digester. High-intensity shear does not appear to enhance pathogen reduction based on total and fecal coliform bacterial enumeration
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Sewage
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|a Carbon Dioxide
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|a Methane
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|a Abu-Orf, Mohammad
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|a Novak, John T
|e verfasserin
|4 aut
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 79(2007), 3 vom: 28. März, Seite 297-304
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
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|g volume:79
|g year:2007
|g number:3
|g day:28
|g month:03
|g pages:297-304
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|h 297-304
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