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.

National Institute of Health (NIH)
National Institute of Environmental Health Sciences (NIEHS)
Hazardous Substances Basic Research Grants Program (NIEHS) (P42)
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Northeastern University
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Zhou, Wei; Meng, Xiaoxiao; Rajic, Ljiljana et al. (2018) ""Floating"" cathode for efficient H2O2 electrogeneration applied to degradation of ibuprofen as a model pollutant. Electrochem commun 96:37-41
Ashrap, Pahriya; Watkins, Deborah J; Calafat, Antonia M et al. (2018) Elevated concentrations of urinary triclocarban, phenol and paraben among pregnant women in Northern Puerto Rico: Predictors and trends. Environ Int 121:990-1002
Ferguson, Kelly K; Meeker, John D; Cantonwine, David E et al. (2018) Environmental phenol associations with ultrasound and delivery measures of fetal growth. Environ Int 112:243-250
Cathey, Amber; Ferguson, Kelly K; McElrath, Thomas F et al. (2018) Distribution and predictors of urinary polycyclic aromatic hydrocarbon metabolites in two pregnancy cohort studies. Environ Pollut 232:556-562
Lan, Jiaqi; Rahman, Sheikh Mokhlesur; Gou, Na et al. (2018) Genotoxicity Assessment of Drinking Water Disinfection Byproducts by DNA Damage and Repair Pathway Profiling Analysis. Environ Sci Technol 52:6565-6575
Wang, Poguang; Giese, Roger W (2018) Interpretation of Mass Spectral Data for the Cisplatin 1,2 Intrastrand Guanine-Guanine Adduct. Chem Res Toxicol 31:1106-1107
Hojabri, Shirin; Rajic, Ljiljana; Alshawabkeh, Akram N (2018) Transient reactive transport model for physico-chemical transformation by electrochemical reactive barriers. J Hazard Mater 358:171-177
Ferguson, Kelly K; Kamai, Elizabeth M; Cantonwine, David E et al. (2018) Associations between repeated ultrasound measures of fetal growth and biomarkers of maternal oxidative stress and inflammation in pregnancy. Am J Reprod Immunol 80:e13017
Elkin, Elana R; Harris, Sean M; Loch-Caruso, Rita (2018) Trichloroethylene metabolite S-(1,2-dichlorovinyl)-l-cysteine induces lipid peroxidation-associated apoptosis via the intrinsic and extrinsic apoptosis pathways in a first-trimester placental cell line. Toxicol Appl Pharmacol 338:30-42
Aker, Amira M; Johns, Lauren; McElrath, Thomas F et al. (2018) Associations between maternal phenol and paraben urinary biomarkers and maternal hormones during pregnancy: A repeated measures study. Environ Int 113:341-349

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