The US EPA supports the adoption of green remediation, which considers all environmental effects and incorporates strategies to maximize the net environmental benefit. Our long-term goal is to develop a green remediation based on conversion of solar energy into iron electrolysis in groundwater. Electrolysis of sacrificial iron anodes will cause chemical reduction of contaminants, including chlorinated solvents in groundwater. The kinetics of iron redox in a two-electrode electrolysis system and release of ferrous ions and hydrogen gas can be optimized by controlling the electric current density and polarity for effective transformation of contaminants. The process is suited for karstic groundwater aquifers because the dynamic flow conditions in channels and fractures require controlled rates of iron reactivity. The process will use solar energy and will not produce adverse effects on groundwater environment. The project will evaluate the effect of iron electrolysis on groundwater geochemistry, demonstrate the transformation of trichloroethylene (TCE) as a model nonpolar organic contaminant in groundwater by iron electrolysis under batch and flow conditions, evaluate the effects of polarity reversal and voltage/current intensity, develop a predictive tool "model" for transformation, evaluate the effects on the physical properties of the aquifer, assess the cytotoxicity of treated water, and evaluate any adverse effects on the fate of other contaminants (e.g., semipolar organics such as phthalates). The project will conduct experiments in cells using karst aquifer characteristics, including experimental setups that are constructed of limestone blocks. The plan includes 2D lab pilot-scale testing using the GeoBed (developed in Project 4) and a small-scale field test. The primary experimental variables that will be controlled are the water flow rate, electric current/voltage and electrolyte type. The primary dependent variables that will be monitored are pH, ORP, Dissolved Oxygen, alkalinity, cation and anion concentrations, contaminant concentration, ferrous and ferric ion concentrations, precipitates, electrical conductivity, and voltage/current. A model that couples Faraday's law for iron electrolysis and reactive flow will be developed and verified. The project will assess power requirement and engineer a strategy that utilizes solar panels for field implementation.

Public Health Relevance

EPA supports adoption of green remediation. The project is relevant to the EPA's strategic plan for compliance and environmental stewardship, which strives for cleanup programs that use natural resources and energy efficiently, reduce negative impacts on the environment, minimize pollution at its source, and reduce waste to the greatest extent possible. The target contaminant, TCE, is one of the frequently encountered contaminants at Superfund sites.

Agency
National Institute of Health (NIH)
Institute
National Institute of Environmental Health Sciences (NIEHS)
Type
Hazardous Substances Basic Research Grants Program (NIEHS) (P42)
Project #
5P42ES017198-04
Application #
8450312
Study Section
Special Emphasis Panel (ZES1-LWJ-M)
Project Start
Project End
Budget Start
2013-04-01
Budget End
2014-03-31
Support Year
4
Fiscal Year
2013
Total Cost
$239,339
Indirect Cost
$80,267
Name
Northeastern University
Department
Type
DUNS #
001423631
City
Boston
State
MA
Country
United States
Zip Code
02115
Ferguson, Kelly K; Cantonwine, David E; McElrath, Thomas F et al. (2016) Repeated measures analysis of associations between urinary bisphenol-A concentrations and biomarkers of inflammation and oxidative stress in pregnancy. Reprod Toxicol 66:93-98
Li, Dan; Zeng, Siyu; He, Miao et al. (2016) Water Disinfection Byproducts Induce Antibiotic Resistance-Role of Environmental Pollutants in Resistance Phenomena. Environ Sci Technol 50:3193-201
Ferguson, Kelly K; Meeker, John D; Cantonwine, David E et al. (2016) Urinary phthalate metabolite and bisphenol A associations with ultrasound and delivery indices of fetal growth. Environ Int 94:531-7
Rajic, Ljiljana; Nazari, Roya; Fallahpour, Noushin et al. (2016) Electrochemical degradation of trichloroethylene in aqueous solution by bipolar graphite electrodes. J Environ Chem Eng 4:197-202
Rajic, Ljiljana; Fallahpour, Noushin; Podlaha, Elizabeth et al. (2016) The influence of cathode material on electrochemical degradation of trichloroethylene in aqueous solution. Chemosphere 147:98-104
McIntosh, Scott; Pérez-Ramos, José; Demment, Margaret M et al. (2016) Development and Implementation of Culturally Tailored Offline Mobile Health Surveys. JMIR Public Health Surveill 2:e28
Watkins, Deborah J; Fortenberry, Gamola Z; Sánchez, Brisa N et al. (2016) Urinary 3-phenoxybenzoic acid (3-PBA) levels among pregnant women in Mexico City: Distribution and relationships with child neurodevelopment. Environ Res 147:307-13
Tan, Wenbing; Zhang, Yuan; He, Xiaosong et al. (2016) Distribution patterns of phthalic acid esters in soil particle-size fractions determine biouptake in soil-cereal crop systems. Sci Rep 6:31987
Johns, Lauren E; Ferguson, Kelly K; Meeker, John D (2016) Relationships Between Urinary Phthalate Metabolite and Bisphenol A Concentrations and Vitamin D Levels in U.S. Adults: National Health and Nutrition Examination Survey (NHANES), 2005-2010. J Clin Endocrinol Metab 101:4062-4069
Shao, Gang; MacNeil, Michael; Yao, Yuanyuan et al. (2016) Porous extraction paddle: a solid phase extraction technique for studying the urine metabolome. Rapid Commun Mass Spectrom :

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