PMID: 15224752Jul 1, 2004Paper

Multipopulation model of membrane-aerated biofilms

Environmental Science & Technology
John Shanahan, M J Semmens

Abstract

Biofilms cultivated on oxygen-filled gas-permeable membranes grow differently than conventional biofilms, as the chemical species required for growth diffuse from different sides of the biofilm. Oxygen is delivered directly to the base of the biofilm by the membrane, while organic substrates and other soluble nutrients are provided to the upper surface of the biofilm via the water in which the membranes are immersed. This counterdiffusion of nutrients results in a growth environment very different from that of conventional biofilms that receive both oxygen and other nutrients from the water. In recent years, membrane-supported biofilms have been shown to simultaneously remove chemical oxygen demand (COD) and inorganic nitrogen from wastewater in laboratory studies. Several investigators have developed computer models of these biofilms, but they have all focused on a single population of aerobic bacteria. While these models are useful in characterizing the behavior of these biofilms in pure cultures, they are not useful in modeling the behavior of the biofilms in mixed cultures such as those found in wastewater treatment. In this study, a multipopulation biofilm model was developed that includes aerobic heterotrophs, nitrifiers,...Continue Reading

References

Mar 1, 1986·Biotechnology and Bioengineering·O Wanner, W Gujer

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Citations

Sep 25, 2008·Applied Microbiology and Biotechnology·Leon S Downing, Robert Nerenberg
Jan 12, 2013·Applied Microbiology and Biotechnology·Tawan LimpiyakornPuntipar Sonthiphand
Nov 18, 2005·Journal of Industrial Microbiology & Biotechnology·Timothy M LaParaMichael J Semmens
Jan 19, 2008·Journal of Industrial Microbiology & Biotechnology·Ruoyu D ChenTimothy M LaPara
Dec 3, 2010·Environmental Technology·Dominika Celmer-RepinJan A Oleszkiewicz
Mar 6, 2007·Applied and Environmental Microbiology·Francois AhimouPaige J Novak
Jan 29, 2014·Journal of Environmental Management·Njenga MburuPiet N L Lens
Sep 4, 2008·Biotechnology and Bioengineering·Leon S Downing, Robert Nerenberg
Aug 21, 2007·Biotechnology and Bioengineering·Daniel P SmithJay L Garland
Nov 1, 2007·Biotechnology and Bioengineering·Eoin Syron, Eoin Casey
Aug 22, 2018·Applied Microbiology and Biotechnology·A Ontiveros-ValenciaB E Rittmann
Jan 12, 2005·Biotechnology and Bioengineering·Anthony S KappellTimothy M LaPara
Apr 16, 2008·Environmental Science & Technology·Tinggang LiF S Wong

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