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Colloidal and Surface Science and Engineering for Bare and Polymer-Modified NZVI Applications: Dispersion Stability, Mobility in Porous Media, and Contaminant Specificity

  • Tanapon Phenrat
  • Gregory V. Lowry
  • Peyman Babakhani
Chapter

Abstract

This chapter summarizes the fundamentals of colloidal and surface science for understanding poor deliverability and mobility of bare NZVI in the subsurface for in situ remediation. The role of three factors, namely, intrinsic magnetic attraction of NZVI, high particle concentration for remedial application, and unfavorable environmental conditions, on the poor NZVI mobility is fundamentally explained. Moreover, this chapter also describes the state of the art in using polymeric surface modification to provide NZVI characteristics needed for effective in situ remediation (i.e., enhancing NZVI dispersion stability and mobility in porous media and maximizing their affinity to target dense nonaqueous phase liquid source zones). It explains the physicochemical reasons for how polymeric surface modification can overcome dispersion instability, extensive deposition, and contaminant non-targetability.

Keywords

Nanoscale zerovalent iron Polymer surface modification Aggregation Contaminant targeting Colloidal science Dispersion stability DLVO 

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© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Tanapon Phenrat
    • 1
    • 2
  • Gregory V. Lowry
    • 3
    • 4
  • Peyman Babakhani
    • 5
    • 6
  1. 1.Department of Civil Engineering, Environmental Engineering ProgramNaresuan UniversityPhitsanulokThailand
  2. 2.Center of Excellence for Sustainability of Health, Environment and Industry (SHEI), Faculty of EngineeringNaresuan UniversityPhitsanulokThailand
  3. 3.Center for Environmental Implications of Nanotechnology (CEINT)DurhamUSA
  4. 4.Department of Civil & Environmental EngineeringCarnegie Mellon UniversityPittsburghUSA
  5. 5.Center for Engineering Sustainability, School of EngineeringUniversity of LiverpoolMerseysideUK
  6. 6.Institute of Environmental EngineeringNational Chiao Tung UniversityHsinchu CityTaiwan

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