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Microbial community response to hydrocarbon exposure in iron oxide mats: an environmental study.
Front Microbiol
May 2024
Department of Biology, East Carolina University, Greenville, NC, United States.
Hydrocarbon pollution is a widespread issue in both groundwater and surface-water systems; however, research on remediation at the interface of these two systems is limited. This interface is the oxic-anoxic boundary, where hydrocarbon pollutant from contaminated groundwaters flows into surface waters and iron mats are formed by microaerophilic iron-oxidizing bacteria. Iron mats are highly chemically adsorptive and host a diverse community of microbes.
View Article and Find Full Text PDFSalty chemical cocktails as water quality signatures: Longitudinal trends and breakpoints along different U.S. streams.
Sci Total Environ
June 2024
United States Environmental Protection Agency, Center for Environmental Measurement and Modeling, Watershed and Ecosystem Characterization Division, 26 Martin Luther King Dr W, Cincinnati, OH 45220, USA. Electronic address:
Along urban streams and rivers, various processes, including road salt application, sewage leaks, and weathering of the built environment, contribute to novel chemical cocktails made up of metals, salts, nutrients, and organic matter. In order to track the impacts of urbanization and management strategies on water quality, we conducted longitudinal stream synoptic (LSS) monitoring in nine watersheds in five major metropolitan areas of the U.S.
View Article and Find Full Text PDFUsing in situ measurements of optical brighteners for rapid reconnaissance of wastewater inputs to water resources.
Sci Total Environ
July 2023
Department of Earth and Atmospheric Sciences, Saint Louis University, Saint Louis, MO 63108, United States; WATER Institute, Saint Louis University, Saint Louis, MO 63103, United States.
Untreated wastewater entering the environment through leaking infrastructure and sewer overflows threatens both human and aquatic health. Water managers therefore need low cost, in situ methods to detect sewage contamination in real time to promptly employ mitigation strategies. However, wastewater has traditionally been identified in waterbodies using chemical and microbial tracers and indicators that can be non-unique to wastewater and often require complex and expensive analyses.
View Article and Find Full Text PDFSedimentary records of polycyclic aromatic hydrocarbons from three enclosed lakes in China: Response to energy structure and economic development.
Environ Pollut
February 2023
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
Historical polycyclic aromatic hydrocarbon (PAH) pollution was explored through the sedimentary records of three lakes: Huguangyan Maar Lake (HGY) in South China, Mayinghai Lake (MYH) in North China, and Sihailongwan Lake (SHLW) in Northeast China. In these three lakes, the PAH concentrations in sediments are still rising, showing the different trend to lakes in developed countries. PAH pollution in South China occurred from 1850, much earlier than the increases since 1980 observed in North and Northeast China.
View Article and Find Full Text PDFEffects of natural non-volcanic CO leakage on soil microbial community composition and diversity.
Sci Total Environ
March 2023
Department of Earth and Environmental Sciences, Korea University, Seoul 02841, South Korea. Electronic address:
Geological carbon capture and storage (CCS) can reduce anthropogenic CO emissions, but questions exist about impacts at the surface if CO leaks from deep storage reservoirs. To examine potential impacts on soils, previous studies have investigated the geochemistry and microbiology of volcanic soils hosting high fluxes of CO rich gas. This study builds on those previous investigations by considering impacts of CO leakage at a non-volcanic site, where deep geogenic CO leaks from a cracked well casing.
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