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Investigating biofilm structure developing on carriers from lab-scale moving bed biofilm reactors based on light microscopy and optical coherence tomography

Li, Chunyan and Felz, S. and Wagner, Michael and Lackner, Susanne and Horn, Harald (2016):
Investigating biofilm structure developing on carriers from lab-scale moving bed biofilm reactors based on light microscopy and optical coherence tomography.
In: Bioresource Technology, Elsevier Applied Science, pp. 128-136, 200, ISSN 0960-8524,
DOI: 10.1016/j.biortech.2015.10.013,
[Online-Edition: http://www.scopus.com/inward/record.url?eid=2-s2.0-849444727...],
[Article]

Abstract

This study focused on characterizing the structure of biofilms developed on carriers used in lab-scale moving bed biofilm reactors. Both light microscopy (2D) and optical coherence tomography (OCT) were employed to track the biofilm development on carriers of different geometry and under different aeration rates. Biofilm structure was further characterized with respect to average biofilm thickness, biofilm growth velocity, biomass volume, compartment filling degree, surface area, etc. The results showed that carriers with a smaller compartment size stimulated a quick establishment of biofilms. Low aeration rates favored fast development of biofilms. Comparison between the results derived from 2D and 3D images revealed comparable results with respect to average biofilm thickness and compartment filling degree before the carrier compartments were fully willed with biomass. However, 3D imaging with OCT was capable of visualizing and quantifying the heterogeneous structure of biofilms, which cannot be achieved using 2D imaging. © 2015 Elsevier Ltd.

Item Type: Article
Erschienen: 2016
Creators: Li, Chunyan and Felz, S. and Wagner, Michael and Lackner, Susanne and Horn, Harald
Title: Investigating biofilm structure developing on carriers from lab-scale moving bed biofilm reactors based on light microscopy and optical coherence tomography
Language: English
Abstract:

This study focused on characterizing the structure of biofilms developed on carriers used in lab-scale moving bed biofilm reactors. Both light microscopy (2D) and optical coherence tomography (OCT) were employed to track the biofilm development on carriers of different geometry and under different aeration rates. Biofilm structure was further characterized with respect to average biofilm thickness, biofilm growth velocity, biomass volume, compartment filling degree, surface area, etc. The results showed that carriers with a smaller compartment size stimulated a quick establishment of biofilms. Low aeration rates favored fast development of biofilms. Comparison between the results derived from 2D and 3D images revealed comparable results with respect to average biofilm thickness and compartment filling degree before the carrier compartments were fully willed with biomass. However, 3D imaging with OCT was capable of visualizing and quantifying the heterogeneous structure of biofilms, which cannot be achieved using 2D imaging. © 2015 Elsevier Ltd.

Journal or Publication Title: Bioresource Technology
Volume: 200
Publisher: Elsevier Applied Science
Uncontrolled Keywords: Biofilm structure Light microscopy Moving bed biofilm reactor Optical coherence tomography Structural parameter
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute IWAR
13 Department of Civil and Environmental Engineering Sciences > Institute IWAR > Wastewater Engineering
Date Deposited: 11 Apr 2018 10:11
DOI: 10.1016/j.biortech.2015.10.013
Official URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-849444727...
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Export Date: 5 November 2015

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