Cargando…
Resistance of aerobic granular sludge microbiomes to periodic loss of biomass
Granular sludge is a biofilm process used for wastewater treatment which is currently being implemented worldwide. It is important to understand how disturbances affect the microbial community and performance of reactors. Here, two acetate-fed replicate reactors were inoculated with acclimatized slu...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415711/ https://www.ncbi.nlm.nih.gov/pubmed/37575957 http://dx.doi.org/10.1016/j.bioflm.2023.100145 |
_version_ | 1785087606004908032 |
---|---|
author | Liébana, Raquel Modin, Oskar Persson, Frank Hermansson, Malte Wilén, Britt-Marie |
author_facet | Liébana, Raquel Modin, Oskar Persson, Frank Hermansson, Malte Wilén, Britt-Marie |
author_sort | Liébana, Raquel |
collection | PubMed |
description | Granular sludge is a biofilm process used for wastewater treatment which is currently being implemented worldwide. It is important to understand how disturbances affect the microbial community and performance of reactors. Here, two acetate-fed replicate reactors were inoculated with acclimatized sludge and the reactor performance, and the granular sludge microbial community succession were studied for 149 days. During this time, the microbial community was challenged by periodically removing half of the reactor biomass, subsequently increasing the food-to-microorganism (F/M) ratio. Diversity analysis together with null models show that overall, the microbial communities were resistant to the disturbances, observing some minor effects on polyphosphate-accumulating and denitrifying microbial communities and their associated reactor functions. Community turnover was driven by drift and random granule loss, and stochasticity was the governing ecological process for community assembly. These results evidence the aerobic granular sludge process as a robust system for wastewater treatment. |
format | Online Article Text |
id | pubmed-10415711 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-104157112023-08-12 Resistance of aerobic granular sludge microbiomes to periodic loss of biomass Liébana, Raquel Modin, Oskar Persson, Frank Hermansson, Malte Wilén, Britt-Marie Biofilm Article Granular sludge is a biofilm process used for wastewater treatment which is currently being implemented worldwide. It is important to understand how disturbances affect the microbial community and performance of reactors. Here, two acetate-fed replicate reactors were inoculated with acclimatized sludge and the reactor performance, and the granular sludge microbial community succession were studied for 149 days. During this time, the microbial community was challenged by periodically removing half of the reactor biomass, subsequently increasing the food-to-microorganism (F/M) ratio. Diversity analysis together with null models show that overall, the microbial communities were resistant to the disturbances, observing some minor effects on polyphosphate-accumulating and denitrifying microbial communities and their associated reactor functions. Community turnover was driven by drift and random granule loss, and stochasticity was the governing ecological process for community assembly. These results evidence the aerobic granular sludge process as a robust system for wastewater treatment. Elsevier 2023-07-28 /pmc/articles/PMC10415711/ /pubmed/37575957 http://dx.doi.org/10.1016/j.bioflm.2023.100145 Text en © 2023 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liébana, Raquel Modin, Oskar Persson, Frank Hermansson, Malte Wilén, Britt-Marie Resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
title | Resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
title_full | Resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
title_fullStr | Resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
title_full_unstemmed | Resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
title_short | Resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
title_sort | resistance of aerobic granular sludge microbiomes to periodic loss of biomass |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415711/ https://www.ncbi.nlm.nih.gov/pubmed/37575957 http://dx.doi.org/10.1016/j.bioflm.2023.100145 |
work_keys_str_mv | AT liebanaraquel resistanceofaerobicgranularsludgemicrobiomestoperiodiclossofbiomass AT modinoskar resistanceofaerobicgranularsludgemicrobiomestoperiodiclossofbiomass AT perssonfrank resistanceofaerobicgranularsludgemicrobiomestoperiodiclossofbiomass AT hermanssonmalte resistanceofaerobicgranularsludgemicrobiomestoperiodiclossofbiomass AT wilenbrittmarie resistanceofaerobicgranularsludgemicrobiomestoperiodiclossofbiomass |