Exposure of humans to heavy metals and helminthic eggs during agricultural utilization of sewage sediments is discussed. Recommendations for reducing or completely eliminating the risk of human exposure to heavy metals are offered.
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Aquatic nitrogen source elucidation using stable isotope analysis in the North Carolina Coastal Plain.
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January 2025
Department of Earth and Ocean Sciences, University of North Carolina Wilmington, Wilmington, North Carolina, USA.
Eastern North Carolina has been subjected to widespread water quality degradation for decades, notably throughout the Cape Fear River Watershed, owing largely to the magnitude of concentrated animal feeding operations (CAFOs) in the region. Long-term nutrient monitoring data from numerous locations throughout southeastern North Carolina have shown significantly elevated organic nitrogen (Org-N) concentrations starting around the year 2000-a concerning development, as labile Org-N can stimulate algal blooms and subsequent bacterial production, thus enhancing eutrophication in freshwater systems. By measuring the stable isotope signatures (δC, δN) of particulate organic matter sampled from a range of southeastern North Carolina waters, the predominant sources to the observed Org-N loadings were elucidated.
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Environ Sci Pollut Res Int
January 2025
South African Institute for Aquatic Biodiversity, Makhanda, 6140, South Africa.
Article Synopsis
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Evaluating the performance and stability of microalgal-bacterial granular sludge in municipal wastewater treatment plants.
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Department of Water and Wastewater Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China. Electronic address:
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Water Res
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Engineering Laboratory of Low-Carbon Unconventional Water Resources Utilization and Water Quality Assurance, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, PR China.
As light intensity plays a pivotal role in the microalgal-bacterial granular sludge (MBGS) process, understanding its impact on system performance and energy dynamics is essential. This study investigated the effects of varying light intensities (20, 100, 200, and 300 μ mol/m²/s) on the performance of MBGS in urban wastewater treatment, with a particular focus on glycogen accumulation and pollutant removal. The results demonstrated that light intensity significantly influenced microbial community structure, glycogen accumulation, and pollutant removal efficiency.
View Article and Find Full Text PDFPollution affects even oceanic marine protected areas in Southwestern Atlantic.
Environ Pollut
December 2024
Marine Ecology Laboratory, Department of Oceanography and Limnology, Universidade Federal Do Rio Grande Do Norte, Natal, RN, 59014-002, Brazil. Electronic address:
Reefs are facing a global decline with sewage pollution emerging as a significant and poorly understood threat. Inadequate wastewater management and disorderly urbanization contribute to water pollution globally. Tropical Southwestern Atlantic comprises a set of oceanic Marine Protected Areas (MPAs) including the Fernando de Noronha Archipelago in Brazil, which has experienced significant population growth without expanding the sewage infrastructure.
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