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251023s2025 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2025.2573838
|2 doi
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|a pubmed25n1608.xml
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|a (NLM)41126645
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wang, Hao
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Fulvic-iron synergy enhances sediment iron-bound phosphorus immobilization and organic pollutant removal with electrode intervention
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|c 2025
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 23.10.2025
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Excessive phosphorus discharge into lacustrine systems was recognized as a primary factor for eutrophication, significantly disrupting the ecological equilibrium of freshwater ecosystems. Effectively controlling endogenous phosphorus release from sediment reservoirs constitutes a fundamental prerequisite for mitigating this environmental challenge. In this study, a sediment microbial fuel cell (SMFC) was developed to address the challenges of sediment-bound phosphorus mobilization. Sediment Total Organic Carbon (TOC) removal in CC-FA-0.2 yielded 2.25 times greater than the control, indicative of aromatic and fulvic acid degradation. Phosphorus in interstitial water decreased by 66% in closed-circuit (CC) reactors, with sequential fractionation revealing enhanced iron-bound phosphorus (BD-P) retention in sediment (105% increase in CC-FA-0.05 vs. versus control). Fe(Ⅲ) redox cycling under SMFC operation maintained higher Fe(Ⅲ) retention (58-54% vs. 51-52% in open-circuit), critical for phosphate immobilization. Microbial profiling identified Proteobacteria (20.41%) and Desulfobacterota (20.41%) as dominant phyla, with genera like Geobacter and Sideroxydans synergistically driving Fe(Ⅲ)/Fe(Ⅱ) cycling and extracellular electron transfer. This study establishes a novel bioelectrochemical strategy based on fulvic-iron synergy, which drive a sustainable electrode-iron-humus redox cycle. This process offers a highly effective and sustainable approach for the simultaneous immobilization of sediment phosphorus and removal of organic pollutants in situ
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|a Journal Article
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|a Electron transfer
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|a bioremediation
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|a endogenous phosphorus
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|a fulvic acid
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| 650 |
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4 |
|a organic pollutants
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1 |
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|a Zhou, Lean
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Shu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tan, Shanning
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Chong
|e verfasserin
|4 aut
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1 |
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|a Sun, Shiquan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Jinting
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Environmental technology
|d 1993
|g (2025) vom: 23. Okt., Seite 1-13
|w (DE-627)NLM098202545
|x 1479-487X
|7 nnas
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| 773 |
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|g year:2025
|g day:23
|g month:10
|g pages:1-13
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|u http://dx.doi.org/10.1080/09593330.2025.2573838
|3 Volltext
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