Paul T. Imhoff

TL;DR: In this paper, the attenuation of gamma radiation was utilized to measure changing residual trichloroethylene (TCE) saturation in an otherwise water-saturated porous medium as clean water was flushed through the medium.

TL;DR: The current status of modeling multiphase systems, including balance equation formulation, constitutive relations for both pressure-saturation-conductivity and interphase mass transfer, and stochastic and computational issues are reviewed.

TL;DR: Land application of PL biochar at soil pH-incorporated rates and frequency will potentially reduce P losses to runoffs and minimize the adverse impact of waste application on aquatic environments.

TL;DR: The results demonstrate that small-scale heterogeneities may lead to locally high residual DNAPL saturations that are more easily mobilized thanDNAPL residuals in homogeneous media and mass transfer rate coefficients for PCE/methanol/water systems can be predicted to within 30% using an existing correlation developed for systems with similar NAPL emplacement procedures.

TL;DR: While the performance varied with synthetic storm events and seasons, in all cases the Biochar/ZVI cell resulted in greater NO3- removal than the Control cell, presumably due to biochar's ability to improve water retention, facilitate anoxic conditions, increase residence time, and provide electrons for microbial denitrification.