Environmental

Oral

395306 - Recycled Concrete Aggreegate for Oyster Aquaculture

Tuesday, June 5
10:30 AM - 12:00 PM
Location: Lakeshore B
Co-Authors: Dong Hee Kang, 1700 E. Cold Spring Lane, Baltimore, MD 21251 – Morgan State University; Kelton Clark, Patuxent Environmental &Aquatic Research Laboratory – Morgan State University; James Hunter, Dept. Civil Engineering – Morgan State University; Chunlei Fan, Patuxent Environmental & Aquatic Research Laboratory 10545 Mackall Road, St. Leonard, MD 20685 – Morgan State University; Mark Bundy, Patuxent Environmental & Aquatic Research Laboratory, 10545 Mackall Road, St. Leonard, MD 20685 – Morgan State University; Andrew Farkas, National Transportation Center, 1700 E. Cold Spring Lane, Baltimore, MD 21251 – Morgan State University

The chemical and biological effects of Recycled Concrete Aggregate (RCA) used in oyster aquaculture was assessed to avoid potential adverse impacts to the Chesapeake Bay's aquatic ecosystem. The results of Phase I showed that using RCA as a base material for oyster reefs did not adversely affect oyster spat growth and survival, or the surrounding environment. In the Phase II study, there was no difference in population or community parameters among the three substrates. Oyster spat settlement was also the same among the three substrates. Phase III of the project evaluated RCA for petroleum byproducts and provided an evaluation of the methodologies. Phase III results showed that RCA as a base material for oyster reefs did not leach any hydrocarbon chemicals and no water extractable SVOC were detected. Therefore, there was no cause for concern about the release of hydrocarbon components into the Chesapeake Bay watershed if RCA is used as a bottom conditioning material for oyster aquaculture. Overall, the findings support the use of RCA for oyster aquaculture.

Anastasia E. M. Chirnside

Assistant Professor
University of Delaware

Anastasia E. M. Chirnside, Ph.D., CpAg (University of Delaware): Dr. Chirnside is an Assistant Professor in the Departments of Bioresources Engineering and the Entomology and Wildlife Ecology at the University of Delaware (UD). She has worked for the UD Bioresources Engineering Department for 36 years. Dr. Chirnside’s research has focused on water quality and waste management in agriculture; bioremediation of recalcitrant compounds and pathogens in soil, water and wastewater; and stormwater bioretention basins. Dr. Chirnside received her degrees in Plant and Soil Science (BS with Distinction, MS; UD) and in Civil and Environmental Engineering (PhD, UD). Dr. Chirnside is also director of the Soil and Water Quality Research Laboratory housed in the College of Agriculture and Natural Resources. As director, she establishes research methodology, protocols and procedures for all laboratory activity. She also establishes and maintains the Quality Assurance/Quality Control programs required by funding agencies. Dr. Chirnside’s research has been supported by the Wetlands and Waterways Program, Maryland Department of the Environment; NIH; USDA National Institute of Food and Agriculture’s Agriculture and Food Initiative (AFRI); Delaware Department of Natural Resources and Environmental Control, NPS 319 Grant; UD Sustainability Grant; Mid-Atlantic Transportation Sustainability - University Transportation Center, and Terrasolve LLC.

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395306 - Recycled Concrete Aggreegate for Oyster Aquaculture



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