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Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor

Recently, sulfate-reducing granular sludge has been developed for application in sulfate-laden water and wastewater treatment. However, little is known about biomass stratification and its effects on the bioprocesses inside the granular bioreactor. A comprehensive investigation followed by a verific...

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Autores principales: Hao, Tian-wei, Luo, Jing-hai, Su, Kui-zu, Wei, Li, Mackey, Hamish R., Chi, Kun, Chen, Guang-Hao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990961/
https://www.ncbi.nlm.nih.gov/pubmed/27539264
http://dx.doi.org/10.1038/srep31718
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author Hao, Tian-wei
Luo, Jing-hai
Su, Kui-zu
Wei, Li
Mackey, Hamish R.
Chi, Kun
Chen, Guang-Hao
author_facet Hao, Tian-wei
Luo, Jing-hai
Su, Kui-zu
Wei, Li
Mackey, Hamish R.
Chi, Kun
Chen, Guang-Hao
author_sort Hao, Tian-wei
collection PubMed
description Recently, sulfate-reducing granular sludge has been developed for application in sulfate-laden water and wastewater treatment. However, little is known about biomass stratification and its effects on the bioprocesses inside the granular bioreactor. A comprehensive investigation followed by a verification trial was therefore conducted in the present work. The investigation focused on the performance of each sludge layer, the internal hydrodynamics and microbial community structures along the height of the reactor. The reactor substratum (the section below baffle 1) was identified as the main acidification zone based on microbial analysis and reactor performance. Two baffle installations increased mixing intensity but at the same time introduced dead zones. Computational fluid dynamics simulation was employed to visualize the internal hydrodynamics. The 16S rRNA gene of the organisms further revealed that more diverse communities of sulfate-reducing bacteria (SRB) and acidogens were detected in the reactor substratum than in the superstratum (the section above baffle 1). The findings of this study shed light on biomass stratification in an SRB granular bioreactor to aid in the design and optimization of such reactors.
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spelling pubmed-49909612016-08-30 Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor Hao, Tian-wei Luo, Jing-hai Su, Kui-zu Wei, Li Mackey, Hamish R. Chi, Kun Chen, Guang-Hao Sci Rep Article Recently, sulfate-reducing granular sludge has been developed for application in sulfate-laden water and wastewater treatment. However, little is known about biomass stratification and its effects on the bioprocesses inside the granular bioreactor. A comprehensive investigation followed by a verification trial was therefore conducted in the present work. The investigation focused on the performance of each sludge layer, the internal hydrodynamics and microbial community structures along the height of the reactor. The reactor substratum (the section below baffle 1) was identified as the main acidification zone based on microbial analysis and reactor performance. Two baffle installations increased mixing intensity but at the same time introduced dead zones. Computational fluid dynamics simulation was employed to visualize the internal hydrodynamics. The 16S rRNA gene of the organisms further revealed that more diverse communities of sulfate-reducing bacteria (SRB) and acidogens were detected in the reactor substratum than in the superstratum (the section above baffle 1). The findings of this study shed light on biomass stratification in an SRB granular bioreactor to aid in the design and optimization of such reactors. Nature Publishing Group 2016-08-19 /pmc/articles/PMC4990961/ /pubmed/27539264 http://dx.doi.org/10.1038/srep31718 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Hao, Tian-wei
Luo, Jing-hai
Su, Kui-zu
Wei, Li
Mackey, Hamish R.
Chi, Kun
Chen, Guang-Hao
Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor
title Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor
title_full Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor
title_fullStr Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor
title_full_unstemmed Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor
title_short Example study for granular bioreactor stratification: Three-dimensional evaluation of a sulfate-reducing granular bioreactor
title_sort example study for granular bioreactor stratification: three-dimensional evaluation of a sulfate-reducing granular bioreactor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990961/
https://www.ncbi.nlm.nih.gov/pubmed/27539264
http://dx.doi.org/10.1038/srep31718
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