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My research focuses on the geochemical and hydrological processes controlling the transport and fate of toxic contaminants and nutrients in coastal and subsurface environments. I am interested in conducting field investigation, laboratory experimentation, and geochemical-hydrological modeling to elucidate chemical and physical processes of environmental systems from the field to the molecular scale. I have been utilizing various types of advanced instruments such as X-ray Absorption Spectroscopy (XAS), Transmission Electron Microscopy (TEM), X-ray micro-tomography (XMT), and Scanning Electron Microscopy (SEM) to develop a fundamental and mechanistic understanding of environmental processes.

Research Interest
  1. Biogeochemical cycling of Nutrients and Heavy Metals in Urban Watersheds
  2. Coupled hydrological and geochemical interaction between the terrestrial and marine environments
  3. Impact of the leakage of carbon dioxide during geologic carbon sequestration on groundwater quality
  4. Development of hydraulic fracturing fluid for enhanced geothermal systems and shale gas production
  5. Role of nanopores and nanoparticles in sorption and redox behavior of toxic metals/metalloids and radionuclides
  6. Hydrogeochemistry of arsenic in the aquifer of South Asia and USA
  7. Reactive multi-component transport modeling in the subsurface
  8. Geochemical behavior and speciation of heavy metals in coastal acid mine drainages
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