| Autor: |
Habe H; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)., Inaba T; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)., Aoyagi T; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)., Aizawa H; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)., Sato Y; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)., Hori T; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)., Yamaji K; Graduate School of Life and Environmental Sciences, University of Tsukuba., Ohara Y; Ningyo-toge Environmental Engineering Center, Sector of Nuclear Fuel, Decommissioning and Waste Management Technology Development, Japan Atomic Energy Agency (JAEA)., Fukuyama K; Ningyo-toge Environmental Engineering Center, Sector of Nuclear Fuel, Decommissioning and Waste Management Technology Development, Japan Atomic Energy Agency (JAEA)., Nishimura T; Nagaoka International Corp. |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of general and applied microbiology [J Gen Appl Microbiol] 2024 Sep 12. Date of Electronic Publication: 2024 Sep 12. |
| DOI: |
10.2323/jgam.2024.08.001 |
| Abstrakt: |
Rapid sand filters (RSFs) are employed in a drinking water treatment to remove undesirable elements such as suspended solids and dissolved metal ions. At a closed uranium (U) mine site, two sets of tandemly linked paired RSF systems (RSF1-RSF2 and RSF1-RSF3) were utilized to remove iron and manganese from mine water. In this study, a 16S rRNA-based amplicon sequencing survey was conducted to investigate the core microbes within the RSF system treating the mine water. In RSF1, two operational taxonomic units (OTUs) related to methanotrophic bacteria, Methylobacter tundripaludum (relative abundance: 18.1%) and Methylovulum psychrotolerans (11.5%), were the most and second most dominant species, respectively, alongside iron-oxidizing bacteria. The presence of these OUTs in RSF1 can be attributed to the microbial community in the inlet mine water, as the three most abundant OTUs in the mine water also dominated RSF1. Conversely, in both RSF2 and RSF3, Nevskia sp., previously isolated from the Ytterby mine manganese oxide producing ecosystem, became dominant, although known manganese-oxidizing bacterial OTUs were not detected. In contrast, a unique OTU related to Rhodanobacter sp. was the third most abundant (8.0%) in RSF1, possibly due to selective pressure from the radionuclide-contaminated environment during RSF operation, as this genus is known to be abundant at nuclear legacy waste sites. Understanding the key bacterial taxa in RSF system for mine water treatment could enhance the effectiveness of RSF processes in treating mine water from closed U mines. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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