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(T/MF148) Fate of Fragrance Materials in Sludge-Amended Soils. DiFrancesco, Angela1, Chiu, Pei1, Standley, Laurel2, Cha, Daniel1, Allen, Herbert1, Salvito, Daniel3, 1 2 3 ABSTRACT- Many fragrance materials (FMs) are released into the environment as a result of incomplete removal in wastewater treatment plants. A large portion of the residual FMs exiting treatment plants are associated with sludge and sludge application to agricultural land is the main input to the soil compartment. To date, the rates at which FMs dissipate in sludge-amended soil and the processes that contribute to their dissipation are not known. This research is aimed at understanding the fate of FMs in soils receiving annual sludge amendments. Specifically, we are studying the rates of the following fate processes: leaching, volatilization, and combined biological and chemical transformation. Laboratory experiments were designed to evaluate these fate processes using anaerobically digested sludge and soils of differing characteristics (e.g., texture and organic content). A long-term die-away study is being performed with and without spiking of a cocktail of twenty-three FMs. Soil samples are collected at pre-determined times and leachate samples are collected after each storm. Preliminary results on the leachate and soil concentrations of selected FMs will be presented. Key words: fragrance, fate, soil, sludge |
