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Inorganic bioelectric system for nitrate removal with low NO production at cold temperatures of 4 and 10 °C.
Water Res
December 2024
Department of Environmental and Resource Engineering, Technical University of Denmark, Bygningstorvet, Bygning 115, 2800 Kgs, Lyngby, Denmark. Electronic address:
Groundwater, essential for ecological stability and freshwater supply, faces escalating nitrate contamination. Traditional biological methods struggle with organic carbon scarcity and low temperatures, leading to an urgent need to explore efficient approaches for groundwater remediation. In this work, we proposed an inorganic bioelectric system designed to confront these challenges.
View Article and Find Full Text PDFEcological dynamics explain modular denitrification in the ocean.
Proc Natl Acad Sci U S A
December 2024
Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305.
Microorganisms in marine oxygen minimum zones (OMZs) drive globally impactful biogeochemical processes. One such process is multistep denitrification (NO→NO→NO→NO→N), which dominates OMZ bioavailable nitrogen (N) loss and nitrous oxide (NO) production. Denitrification-derived N loss is typically measured and modeled as a single step, but observations reveal that most denitrifiers in OMZs contain subsets ("modules") of the complete pathway.
View Article and Find Full Text PDFInsights into the influence of organic and salinity on the two-stage partial nitritation/anammox process in treating food waste digestate.
Environ Technol
December 2024
School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou, People's Republic of China.
Food waste digestate (FWD), which contains significant levels of ammonium, organic matter, and salinity, can interfere with treatment performance of the anammox process. In this study, a two-stage partial nitritation/anammox (PN/A) process was established to investigate nitrogen removal and microbial response in treating FWD at a nitrogen loading rate (NLR) of 0.27 ± 0.
View Article and Find Full Text PDFAnalgosedation in Pediatric Emergency Care: A Comprehensive Scoping Review.
Pharmaceuticals (Basel)
November 2024
Pediatric Clinic, Department of Medicine and Surgery, University Hospital of Parma, 43126 Parma, Italy.
Effective management of pain and anxiety in pediatric emergency room is crucial for ensuring both the physical and emotional well-being of young patients. Analgosedation, a combination of analgesia and sedation, is commonly used to facilitate various procedures in children. However, selecting the optimal agent and administration route remains challenging due to the unique pharmacological profiles and side effects of available drugs.
View Article and Find Full Text PDFA hybrid oxidation approach for converting high-strength urine ammonia into ammonium nitrate.
Water Res X
December 2024
Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
Nutrient resources contained in human urine have great potential to alleviate global agricultural fertilizer demand. Microbial nitrification is a recognized strategy for stabilizing urine ammonia into ammonium nitrate, a common fertilizer worldwide, but faces a core bottleneck of process instability due to microbial inhibition. This study reports a new approach by developing a hybrid oxidation process involving three stages-microbial ammonia oxidation, chemical nitrite oxidation and microbial nitrite oxidation.
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