The main objective of the proposed research is to assess the potential for using oxidants produced? during the corrosion of granular and nanoparticulate zero-valent iron (ZVI) by oxygen to remediate? contaminated groundwater and soil. This objective will be realized by studying the reaction mechanisms? involved in oxidant production and contaminant transformation and the efficiency of potential treatment? methods under conditions similar to those that are likely to be employed in treatment systems. The overall? hypothesis that we aim to test is that the oxidative ZVI system offers a practical, cost-effective means of? remediating contaminants that have the greatest impact on human health at Superfund sites.? Our investigation of the reaction mechanisms will focus on the role of solution chemistry and surface? structure on the rate of contaminant transformation. To gain insight into the processes occurring on or? near ZVI surfaces, chemical processes occurring in the solution phase will be measured in conjunction with? studies conducted using techniques designed to probe the surface, such as potentiometry, surfaceenhanced? Raman spectroscopy and electrochemical quartz microbalance methods.? Our investigation of the potential applications of the oxidative ZVI system to contaminant remediation? will focus on permeable reactive barriers and water infiltration systems used to treat organic contaminants? and drinking water treatment systems used to remove arsenic. These studies will extend the research in? oxidant formation mechanisms to account for the effect of oxide coatings on the ZVI surfaces on? contaminant oxidation rates and transport of contaminants to and from the corroding iron surfaces.? This research has the potential to provide innovative and cost-effective ways of removing contaminants? from groundwater and drinking water that are difficult or expensive to treat by conventional methods. The? development of these technologies could reduce human exposure to organic and inorganic contaminants? of concern.

Agency
National Institute of Health (NIH)
Institute
National Institute of Environmental Health Sciences (NIEHS)
Type
Hazardous Substances Basic Research Grants Program (NIEHS) (P42)
Project #
5P42ES004705-20
Application #
7439215
Study Section
Special Emphasis Panel (ZES1)
Project Start
Project End
Budget Start
2007-04-01
Budget End
2008-03-31
Support Year
20
Fiscal Year
2007
Total Cost
$163,485
Indirect Cost
Name
University of California Berkeley
Department
Type
DUNS #
124726725
City
Berkeley
State
CA
Country
United States
Zip Code
94704
Rappaport, Stephen M (2018) Redefining environmental exposure for disease etiology. NPJ Syst Biol Appl 4:30
Tachachartvanich, Phum; Sangsuwan, Rapeepat; Ruiz, Heather S et al. (2018) Assessment of the Endocrine-Disrupting Effects of Trichloroethylene and Its Metabolites Using in Vitro and in Silico Approaches. Environ Sci Technol 52:1542-1550
Guyton, Kathryn Z; Rieswijk, Linda; Wang, Amy et al. (2018) Key Characteristics Approach to Carcinogenic Hazard Identification. Chem Res Toxicol :
Roh, Taehyun; Steinmaus, Craig; Marshall, Guillermo et al. (2018) Age at Exposure to Arsenic in Water and Mortality 30-40 Years After Exposure Cessation. Am J Epidemiol 187:2297-2305
Daniels, Sarah I; Chambers, John C; Sanchez, Sylvia S et al. (2018) Elevated Levels of Organochlorine Pesticides in South Asian Immigrants Are Associated With an Increased Risk of Diabetes. J Endocr Soc 2:832-841
Guyton, Kathryn Z; Rusyn, Ivan; Chiu, Weihsueh A et al. (2018) Application of the key characteristics of carcinogens in cancer hazard identification. Carcinogenesis 39:614-622
Grigoryan, Hasmik; Edmands, William M B; Lan, Qing et al. (2018) Adductomic signatures of benzene exposure provide insights into cancer induction. Carcinogenesis 39:661-668
Barazesh, James M; Prasse, Carsten; Wenk, Jannis et al. (2018) Trace Element Removal in Distributed Drinking Water Treatment Systems by Cathodic H2O2 Production and UV Photolysis. Environ Sci Technol 52:195-204
Counihan, Jessica L; Wiggenhorn, Amanda L; Anderson, Kimberly E et al. (2018) Chemoproteomics-Enabled Covalent Ligand Screening Reveals ALDH3A1 as a Lung Cancer Therapy Target. ACS Chem Biol 13:1970-1977
Lavy, Adi; Keren, Ray; Yu, Ke et al. (2018) A novel Chromatiales bacterium is a potential sulfide oxidizer in multiple orders of marine sponges. Environ Microbiol 20:800-814

Showing the most recent 10 out of 629 publications