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Full-Text Articles in Environmental Engineering
Monitoring Remediation Of Organic Contaminants Using Electrical Resistivity And Induced Polarization Techniques, Angelos Almpanis
Monitoring Remediation Of Organic Contaminants Using Electrical Resistivity And Induced Polarization Techniques, Angelos Almpanis
Electronic Thesis and Dissertation Repository
Effective characterization and monitoring of subsurface processes associated with the remediation of sites contaminated by dense non-aqueous phase liquids (DNAPLs) remains a substantial environmental challenge. Geophysical techniques such as direct current (DC) resistivity and induced polarization (IP) offer the potential to considerably enhance our understanding of such complex phenomena occurring in the subsurface. However, despite extensive research highlighting the benefits of employing IP – in the time domain (DCIP) and/or frequency domain (spectral IP, SIP) – for contaminant investigations, more research is needed to understand the role of IP for monitoring DNAPL remediation. The goal of this thesis was to …
Geoelectrical Signatures Of Acid-Generating Mine Waste Rock, Difan Su
Geoelectrical Signatures Of Acid-Generating Mine Waste Rock, Difan Su
Electronic Thesis and Dissertation Repository
Acid mine drainage (AMD) contamination associated with waste rock piles (WRPs) at mining sites is a global concern, and understanding the generation and release of AMD from these piles is highly desirable. Traditional WRP monitoring techniques involve the installation of monitoring wells and periodic core sampling; however, these approaches are invasive, expensive and can only provide data with limited spatial and temporal resolution. An attractive alternative is non-invasive geophysical techniques that can provide non-invasive and continuous information on subsurface features and processes. This thesis aims to investigate the feasibility of the spectral induced polarization (SIP) method for monitoring changes in …
Electrical Resistivity Tomography For Mapping Subsurface Remediation, Christopher Power
Electrical Resistivity Tomography For Mapping Subsurface Remediation, Christopher Power
Electronic Thesis and Dissertation Repository
Cleaning up sites contaminated with dense non-aqueous phase liquids (DNAPLs) remains a challenging geoenvironmental problem. The performance of site remediation methods is difficult to assess without a practical, non-destructive technique to map where and how quickly DNAPL mass is being reduced. The promise of electrical resistivity tomography (ERT) in this context has not been realized, in part because traditional ERT methods were used to solve the near-impossible problem of mapping the initial DNAPL outline. However, new developments in ERT have emerged that focus on resolving subsurface changes over time. The objective of this work was to evaluate the potential of …