Triiron Tetraoxide (Fe3O4) Triggers Aerobic Denitrification Performance in Low C/N Water: Novel Insights into the Electron Transport System and Bacterial Community Model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F25%3A102073" target="_blank" >RIV/60460709:41330/25:102073 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsestwater.5c00217" target="_blank" >https://pubs.acs.org/doi/10.1021/acsestwater.5c00217</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsestwater.5c00217" target="_blank" >10.1021/acsestwater.5c00217</a>
Alternative languages
Result language
angličtina
Original language name
Triiron Tetraoxide (Fe3O4) Triggers Aerobic Denitrification Performance in Low C/N Water: Novel Insights into the Electron Transport System and Bacterial Community Model
Original language description
Denitrification performance is significantly influenced by electron donors, mainly organic electron donors. Inorganic electron donors (e.g., Fe3O4) have shown potential for enhancing the nitrate removal efficiency. However, the mechanism of Fe3O4 on denitrification under aerobic conditions remains poorly understood. This study investigated the synergistic mechanisms of electron transfer and microbial interactions facilitated by Fe3O4 in an aerobic denitrifying bacterial community isolated from a micropolluted reservoir. The results revealed that the aerobic denitrifying bacterial (ADB) reactor achieved over 50% efficiency in both denitrification and organic carbon removal. When Fe3O4 was added, the removal efficiencies for nitrate (NO3--N) and organic carbon increased to 82.38 and 66.84%, respectively. The adenosine triphosphate (ATP) activity and electron transport system activity (ETSA) increased by 1.3- and 1.7-fold, respectively, with the upregulation of denitrification-related enzymes. High-throughput sequencing analysis demonstrated that the bacterial community structure in the water column, biofilm, and sediment was enriched with Proteobacteria and Actinobacteria phyla in the biofilm. Additionally, statistical modeling further highlighted the stabilizing effects of Fe3O4 on the reaction system and the microbial community’s adaptive responses to environmental factors. In summary, this study provides a novel approach for leveraging Fe3O4 and aerobic denitrifying bacterial communities to achieve efficient nitrogen removal in micropolluted waters.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10503 - Water resources
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS ES&T WATER
ISSN
2690-0637
e-ISSN
2690-0637
Volume of the periodical
5
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
3391-3402
UT code for WoS article
001498441600001
EID of the result in the Scopus database
2-s2.0-105007071370