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| Submitter's Name |
Manmeet Waria |
| Session Name |
Poster Session: Hydrologic, Biogeochemical and Ecological Processes 2 |
| Category |
Hydrologic, biogeochemical and ecological processes |
| Poster Number |
240 |
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| Author(s) |
MANMEET WARIA, DEPARTMENT OF SOIL AND WATER SCIENCE |
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GEORGE O'CONNOR,
PROFESSOR, DEPARTMENT OF SOIL AND WATER SCIENCE |
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Environmental Behavior of Biosolids-Borne Triclosan (TCS) |
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Triclosan (TCS) is an antimicrobial compound frequently added in liquid soaps and is a common constituent of domestic wastewater. Wastewater is treated in treatment plants where solids (sludge) are separated and liquids (effluent) are discharged to surface waters. The presence of emerging contaminant (TCS) in surface waters has been well documented. In recent years, focus increased on the TCS concentration in biosolids as the TCS enters the agricultural soils and the environment through land applied biosolids. However, the fate and effects of TCS in land applied biosolids systems is largely unknown. Our research focuses on the environmental fate and ecological effects of biosolids-borne TCS under normal land application of biosolids scenarios, with the ultimate goal of performing an applicable environmental and human health risk assessment. We began by analyzing 15 biosolids from around the US for TCS content. The TCS concentrations ranged from 1 to 40 mg kg-1, and the mean TCS concentration (18 mg kg-1) in our study is consistent with the mean reported in the TNSSS (USEPA, 2009). We also performed a degradation study using 14C-TCS. The 18 week incubation suggested minimal ( |
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