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Exploring the Viability of a Liquid-Permeable Membrane Biofilm Reactor
https://orcid.org/0000-0001-7772-9332
https://orcid.org/0000-0002-0924-228X
https://orcid.org/0000-0003-2203-5004
This study evaluated a novel biofilm reactor, the liquid-permeable membrane biofilm reactor, that supplies performance-enhancing chemicals directly to the base of a biofilm. The chemicals are supplied via a liquid-permeable membrane that serves as the biofilm support. Two studies were carried out. In the first, a denitrifying biofilm was established on the membrane, and then chlorate was added via the membrane to enhance the abundance of specialized (per)chlorate-reducing denitrifying bacteria. Approximately 98% denitrification was maintained throughout the experiment, but the addition of chlorate resulted in an increase in the relative abundance of putative (per)chlorate reducing bacteria by around 15%. In the second study, a nitrifying biofilm was first established, achieving approximately 70% ammonium removal. Then, a protozoan inhibitor (cycloheximide) was added via the membrane, resulting in an increase in biofilm thickness and an increase in ammonium removal to 93%. Biofilm image analysis identified the mass transport mechanism from membrane to biofilm as a combination of advection and diffusion. These studies demonstrate the viability and effectiveness using a liquid-permeable membrane to supply performance-enhancing chemicals to a biofilm growing on the membrane surface.
A novel liquid-permeable membrane-biofilm reactor (LP-MBfR) improves process performance by supplying chemicals directly to the base of the biofilm.
Exploring the Viability of a Liquid-Permeable Membrane Biofilm Reactor
https://orcid.org/0000-0001-7772-9332
https://orcid.org/0000-0002-0924-228X
https://orcid.org/0000-0003-2203-5004
This study evaluated a novel biofilm reactor, the liquid-permeable membrane biofilm reactor, that supplies performance-enhancing chemicals directly to the base of a biofilm. The chemicals are supplied via a liquid-permeable membrane that serves as the biofilm support. Two studies were carried out. In the first, a denitrifying biofilm was established on the membrane, and then chlorate was added via the membrane to enhance the abundance of specialized (per)chlorate-reducing denitrifying bacteria. Approximately 98% denitrification was maintained throughout the experiment, but the addition of chlorate resulted in an increase in the relative abundance of putative (per)chlorate reducing bacteria by around 15%. In the second study, a nitrifying biofilm was first established, achieving approximately 70% ammonium removal. Then, a protozoan inhibitor (cycloheximide) was added via the membrane, resulting in an increase in biofilm thickness and an increase in ammonium removal to 93%. Biofilm image analysis identified the mass transport mechanism from membrane to biofilm as a combination of advection and diffusion. These studies demonstrate the viability and effectiveness using a liquid-permeable membrane to supply performance-enhancing chemicals to a biofilm growing on the membrane surface.
A novel liquid-permeable membrane-biofilm reactor (LP-MBfR) improves process performance by supplying chemicals directly to the base of the biofilm.
Exploring the Viability of a Liquid-Permeable Membrane Biofilm Reactor
https://orcid.org/0000-0001-7772-9332
https://orcid.org/0000-0002-0924-228X
https://orcid.org/0000-0003-2203-5004
This study evaluated a novel biofilm reactor, the liquid-permeable membrane biofilm reactor, that supplies performance-enhancing chemicals directly to the base of a biofilm. The chemicals are supplied via a liquid-permeable membrane that serves as the biofilm support. Two studies were carried out. In the first, a denitrifying biofilm was established on the membrane, and then chlorate was added via the membrane to enhance the abundance of specialized (per)chlorate-reducing denitrifying bacteria. Approximately 98% denitrification was maintained throughout the experiment, but the addition of chlorate resulted in an increase in the relative abundance of putative (per)chlorate reducing bacteria by around 15%. In the second study, a nitrifying biofilm was first established, achieving approximately 70% ammonium removal. Then, a protozoan inhibitor (cycloheximide) was added via the membrane, resulting in an increase in biofilm thickness and an increase in ammonium removal to 93%. Biofilm image analysis identified the mass transport mechanism from membrane to biofilm as a combination of advection and diffusion. These studies demonstrate the viability and effectiveness using a liquid-permeable membrane to supply performance-enhancing chemicals to a biofilm growing on the membrane surface.
A novel liquid-permeable membrane-biofilm reactor (LP-MBfR) improves process performance by supplying chemicals directly to the base of the biofilm.
Exploring the Viability of a Liquid-Permeable Membrane Biofilm Reactor
Kim, Bumkyu (Autor:in) / Novitch, Jacob (Autor:in) / Ontiveros-Valencia, Aura (Autor:in) / Vega, Marcela (Autor:in) / Nerenberg, Robert (Autor:in)
ACS ES&T Water ; 3 ; 70-78
13.01.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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