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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 PDFComponent analysis and source identification of atmospheric aerosols at the neighborhood scale in a coastal industrial city in China.
Environ Pollut
December 2024
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
A multiple-site filter-sampling observation study was conducted in a coastal industrial city (Rizhao, 35°10'59″N, 119°23'57″E) to understand the main components, formation mechanisms, and potential sources of particulate matter. The average (±σ) mass concentration of PM across all the sites was 42 (±27) μg/m, with high variability (6∼202 μg/m). Water-soluble inorganic ions (WSIIs) were the major contributors (54%∼60%) to PM with mean values for sulfate (13 μg/m), nitrate (6 μg/m), and ammonium (7 μg/m) (SNA).
View Article and Find Full Text PDFResponses of biogenic trace gases to atmospheric deposition and acid-processed atmospheric deposition in the oligotrophic western Pacific Ocean.
Mar Environ Res
December 2024
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao, 266237, China. Electronic address:
Dimethylsulfide (DMS) and very short-lived bromocarbons (VSL) are important biogenic trace gases emitted from oceans that can affect the global climate. Atmospheric deposition (AD) can provide nutrients and trace metals to the ocean, which can enhance primary productivity, but the complex effects of AD on DMS and VSL are still largely unexplored. A deck incubation experiment with aerosol additions was conducted to simulate the effects of acid-processed AD on the production of trace gases, including DMS and four VSL such as bromoform (CHBr), dibromomethane (CHBr), dibromochloromethane (CHBrCl), and bromodichloromethane (CHBrCl), in the oligotrophic western Pacific Ocean (WPO).
View Article and Find Full Text PDFSecondary Transport Mechanisms in Amino Acid Fed Enhanced Biological Phosphorus Removal.
Chemosphere
December 2024
Gerald May Department of Civil, Construction, and Environmental Engineering, The University of New Mexico, Albuquerque, New Mexico, 87131, United States. Electronic address:
Enhanced biological phosphorus removal (EBPR) water resource recovery facilities (WRRFs) often fail to meet phosphorus discharge permit limits, indicating a need to improve EBPR to reduce environmental phosphorus discharges. EBPR designs are largely based on the Accumulibacter polyphosphate accumulating organism (PAO) metabolism, while understudied Tetrasphaera PAOs are equally important to EBPR in many facilities worldwide. Anaerobic organic carbon competition is believed to be a key driver of EBPR reliability.
View Article and Find Full Text PDFUpper circumpolar deep water influences microbial functional gene composition and diversity along the southern Central Indian Ridge and eastern Southwest Indian Ridge.
Microbiol Spectr
December 2024
National Center for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa, India.
Deep sea microbial communities play a significant role in global biogeochemical processes. However, the depth-wise metabolic potential of microbial communities in hydrothermally influenced Central Indian Ridge (CIR) and Southwest Indian Ridge (SWIR) remains elusive. In this study, a comprehensive functional microarray-based approach was used to understand factors influencing the metabolic potential of microbial communities and depth-driven differences in microbial functional gene composition in CIR and SWIR.
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