The Role of Black Carbon in Organic Chemical Sorption by SoilsEPA Grant Number: U915776
Title: The Role of Black Carbon in Organic Chemical Sorption by Soils
Investigators: Brown, Roberta A.
Institution: The Johns Hopkins University
EPA Project Officer: Lee, Sonja
Project Period: August 1, 2000 through August 1, 2003
Project Amount: $102,000
RFA: STAR Graduate Fellowships (2000) RFA Text | Recipients Lists
Research Category: Fellowship - Environmental Engineering , Academic Fellowships , Engineering and Environmental Chemistry
The goal of this research project is to better understand adsorption/partitioning phenomena relevant to toxic organic chemical association with natural heterogeneous sorbent systems (e.g., soils, sediment).
This research will focus on the sorption processes associated with different soil components. More specifically, the goals are to: (1) measure the sorption of selected organic chemicals on chars and humic materials and to separately characterize adsorption and partitioning contributions for both types of material using previously proposed adsorption and partitioning models; (2) test whether the adsorption and partitioning contributions measured with the individual components are additive when mixtures of these materials are combined with each other and with sand in mixed systems; and (3) develop improved means of characterizing and modeling both the isotherm behavior with individual components and the interactive effects with a combined system.
Results with mixed sorbent systems will provide important new information about potential synergistic and antagonistic effects among contributing components in heterogeneous sorbent systems.