4 Groundwater Mapping and Monitoring

Friday, 28 March 2025
8:00 AM - 12:00 PM
130AB

EFFICACY OF SLOW-RELEASE PERMANGANATE GEL IN TREATING TRICHLOROETHYLENE: LARGE FLOW-TANK TEST

Paper number: 4-11
Program: Theme Sessions
Time: 11:15 AM – 11:35 AM

Authors

Abstract

Trichloroethylene (TCE) is a common organic pollutant in groundwater. Its high density and low solubility allow it to sink and accumulate above impermeable layers, forming long-term pollution reservoirs. Slow-release permanganate gel (SRP-G) has been investigated as a novel in-situ chemical oxidation technique to treat large and dilute dissolved plumes of TCE. The study evaluates the spreading, gelation, and release dynamics and remedial efficiencies of SRP-G using a flow tank (122 cm x 10 cm × 45 cm) filled with multi-layered glass bead matrices to replicate natural aquifer heterogeneity. Data analysis revealed a high correlation between electric conductance (EC) peaks and permanganate (MnO4-) concentrations, indicating that permeability variations significantly affected oxidant migration, and confirmed SRP-G could provide sustained availability of MnO4- for treatment of TCE in saturated heterogeneous media.

Geological Society of America Abstracts with Programs. Vol. 57, No. 3

doi: 10.1130/abs/2025NE-408457

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