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Extramural Research

Grantee Research Project Results

Grantee Research Project Results

The Role of Black Carbon in Organic Chemical Sorption by Soils

EPA Grant Number: U915776
Title: The Role of Black Carbon in Organic Chemical Sorption by Soils
Investigators: Brown, Roberta A.
Institution: Johns Hopkins University
EPA Project Officer: Jones, Brandon
Project Period: August 1, 2000 through August 1, 2003
Project Amount: $102,000
RFA: STAR Graduate Fellowships (2000)
Research Category: Fellowship - Environmental Engineering , Academic Fellowships , Engineering and Environmental Chemistry

Description:

Objective:

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).

Approach:

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.

Expected Results:

Results with mixed sorbent systems will provide important new information about potential synergistic and antagonistic effects among contributing components in heterogeneous sorbent systems.

Supplemental Keywords:

sorption, partitioning, adsorption, black carbon, heterogeneous systems, geosorbents, subsurface materials, synthetic organic contaminants, adsorption models., RFA, Scientific Discipline, Waste, Water, Remediation, Environmental Chemistry, Geochemistry, Chemistry, chemical mixtures, Civil/Environmental Engineering, Hazardous Waste, Chemistry and Materials Science, Hazardous, Engineering, Chemistry, & Physics, Environmental Engineering, additive effects, model, sorption, humic substances, soil , soil sediment, subsurface, adsorbents, partitioning, sediment, modeling, soils, adsorption, organic compounds, selective sorption, sorbents, toxic organic compounds, organic chemicals, heterogeneous environmental sorbents, black carbon, geosorbents, toxics

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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