Thesis
Treatability study for the in situ chemical oxidation treatment of groundwater
Washington State University
Master of Science (MS), Washington State University
2009
Handle:
https://hdl.handle.net/2376/101674
Abstract
A bench-scale treatability study was conducted in order to determine the optimal process conditions for the treatment of perchloroethylene (PCE) groundwater contamination using catalyzed hydrogen peroxide propagations (CHP) based in situ chemical oxidation (ISCO). The metric for optimal process conditions was the CHP treatment formulation that achieved 99% contaminant of concern (CoC) destruction while providing the greatest peroxygen longevity in the presence of subsurface solids. Subsurface soils were evaluated for homogeneity in order to determine the number of subsamples required for the treatability study. Solids characterization results indicated that the presence of light and dark soil material affected H2O2 decomposition rates differently and therefore required separate treatability studies. Two doses of CHP treatment formulations stabilized by phytate, citrate, or malonate resulted in > 99% destruction of PCE for both the light and dark soil material. Of the treatment conditions that achieved 99% PCE destruction, natural mineral catalyzed H2O2 stabilized by phytate had the greatest subsurface longevity in both the light and dark material. Stabilization using 5 mM phytate provided the most cost effective and therefore optimal process conditions for treatment.
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Details
- Title
- Treatability study for the in situ chemical oxidation treatment of groundwater
- Creators
- Jeremiah Trnka
- Contributors
- Richard J. Watts (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; Pullman, Wash. :
- Identifiers
- 99900525057901842
- Language
- English
- Resource Type
- Thesis