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Bioremediation of oligotrophic waters by iron-humus-containing bio-immobilized materials: Performance and possible mechanisms.
Water Res
January 2025
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
The combined pollution and oligotrophic characteristics of surface water led to poor self-purification capacity of water bodies. In this study, humic acid (HA) and fulvic acid (FA) were used to promote the denitrification process of strain Zoogloea sp. ZP7.
View Article and Find Full Text PDFOptimizing roof-harvested rainwater storage: Impact of dissolved oxygen regime on self-purification and quality dynamics.
Sci Total Environ
December 2024
Key Lab of Northwest Water Resource, Environment, and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Xi'an 710055, China.
Article Synopsis
- Roof-harvested rainwater is a sustainable resource, but there's limited understanding of how its quality changes during storage.
- This study examined rainwater quality in three storage conditions: aerated, open, and sealed, focusing on microbial activity and self-purification over time.
- Results showed that aerated storage improves microbial activity more than other methods, while sealed storage was found to have better self-purification capabilities, indicating the need for better management of rainwater systems.
Saturation of intracellular phosphorus uptake and prevalence of extracellular phosphorus entrapment in fluvial biofilms after long-term P pulses: Implications for river self-purification.
Sci Total Environ
November 2024
Department of River Ecology, Helmholtz Centre for Environmental Research - UFZ, Brueckstrasse 3a, 39114 Magdeburg, Germany; Technical University of Dresden, 01069 Dresden, Germany.
Microbial consortia in riverbed substrates and their extracellular matrix (biofilms) play a key role in phosphorus (P) entrapment. When P entrapment saturates, the benthic compartment changes from a P sink to a P source thus increasing eutrophication risk. P entrapment saturation is expected to differ between intracellular and extracellular P entrapment and between different magnitudes and durations of P inputs.
View Article and Find Full Text PDFEffects of cable bacteria on vertical redox profile formation and phenanthrene biodegradation in intertidal sediment responded to tide.
Water Res
November 2024
Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China. Electronic address:
Periodic oxygen permeation is critical for pollutant removal within intertidal sediments. However, tidal effects on the vertical redox profile associated with cable bacterial activity is not well understood. In this study, we simulated and quantified the effects of tidal flooding, exposing, and their periodic alternation on vertical redox reactions and phenanthrene removal driven by cable bacteria in the riverbank sediment.
View Article and Find Full Text PDFPredicting abrupt depletion of dissolved oxygen in Chaohu lake using CNN-BiLSTM with improved attention mechanism.
Water Res
September 2024
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, PR China.
Depletion of dissolved oxygen (DO) is a significant incentive for biological catastrophic events in freshwater lakes. Although predicting the DO concentrations in lakes with high-frequency real-time data to prevent hypoxic events is effective, few related experimental studies were made. In this study, a short-term predicting model was developed for DO concentrations in three problematic areas in China's Chaohu Lake.
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