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oai:www.ideals.illinois.edu:2142/83259 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Raskin, Lutgarde Frigon, Dominic 2015-09-25T21:03:57Z 2015-09-25T21:03:57Z 10000-01-01 2005 2005 The validity of this mechanism was first tested by studying the relationship between lipase (lipid hydrolyzing enzyme) activity, temperature, and foam occurrences. Lipase activity was found to be higher in foaming plants and very sensitive to temperature, substantiating the role of temperature in seasonal biological foaming. The validity of the assumption that the mycolata specialize in consuming lipids, which are slowly degradable substrates, was also tested. To this end, a model capable the predicting the dynamics of the cellular rRNA pool was developed and validated. This model predicted that the diurnal rRNA profile of a population consuming slowly degradable substrates remains stable throughout the day. Conversely, the diurnal rRNA profile of a population consuming readily degradable substrates varies due to variations in COD loading rates. Thus, the modeling exercise linked the molecular identification of microbial populations and the determination of their ecological function. Diurnal rRNA profiles were then measured for bacterial populations found in full-scale activated sludge wastewater treatment plants, and the experiment support the assumption that mycolata specialize in consuming lipids. Made available in DSpace on 2015-09-25T21:03:57Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3182266.pdf: 7273164 bytes, checksum: d79a5a34b45c4b0a2ac5b1bf12bf0857 (MD5) Previous issue date: 2005 Embargo set by: Seth Robbins for item 84540 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 239 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005. http://hdl.handle.net/2142/83259 (MiAaPQ)AAI3182266 eng Biology, Microbiology Proposed Mechanism Explaining Seasonal Biological Foaming in Activated Sludge Systems; Foam-Causing Bacteria Specialize in Consuming Lipids text Civl and Environmental Engineering Civl and Environmental Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.