2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 11:15 AM - 11:30 AM | TRACING COAL ASH THROUGH AQUATIC FOOD WEBS | 305B
TRACING COAL ASH THROUGH AQUATIC FOOD WEBS
Coal combustion residuals (CCRs) represent the second largest waste stream in the United States (~117 million tons in 2015).1 In North Carolina, CCRs chronically released to freshwater ecosystems via permitted effluent streams represent stressor mixtures and contain several constituents of concern (i.e. Se, As, Mn). In the present study, we track the movement of CCR-derived trace elements from abiotic compartments (surface water, sediment, and sediment pore water) to biotic compartments (biofilm, zooplankton, and three fish species) in Sutton Lake, a hydrologically closed lake system adjacent to the Sutton Steam Plant in Wilmington, NC. With these data, we ask “what factors account for differential trace element uptake and transfer through aquatic food webs?” Results are initially compared to a non-CCR receiving reference lake and subsequently to lakes with similar CCR-loading but differing limnology and biogeochemistry. We identify patterns in contaminant distribution and report that subsequent to loading via effluent streams, in which trace element ratios are relatively consistent, CCRs undergo concentration or dilution in an environmental compartment-specific manner.
1 ACAA. 2016. 2015 Coal Combustion Product (CCP) Production & Use Survey Report.
- C10 Biogeochemistry
- C13 Ecotoxicology
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Jessica Brandt
(), Duke University, jessica.brandt@duke.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Richard Di Giulio
(), Duke University, richd@duke.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Emily Bernhardt
(), Duke University, ebernhar@duke.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -