Application of multiphase transport models to field remediation by air sparging and soil vapor extraction

Remediation in Situ of Hydrocarbons by Combined Treatment in a Contaminated Alluvial Soil due to an Accidental Spill of LNAPL

“…Once the state of pollution is determined, technologies have to be applied for the treatment of soils and groundwater. The main applied technologies are: air sparging, soil vapour extraction, pumping remediation, enhanced bioremediation and microbial uptake and "pump and treat" system [7][8][9][10][11][12][13][14][15].…”

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

“…MPE is most applicable to VOCs like petroleum hydrocarbons (BTEX), degreasing agents (TCE) and chlorinated as well as non-chlorinated solvents. Studies also tend to state that MPE is rarely applicable to treat non-volatile contaminants, provided airfl ow is kept higher by subsequent introduction of oxygen that could stimulate biodegradation (Rahbeh and Mohtar 2007 ).…”

“…The mass removed was comparatively higher to that expected by air sparging. Rahbeh and Mohtar ( 2007 ) studied the positive effect of multi-phase transport models to full-scale treatment by air sparging and SVE of BTEX-contaminated site. A similar fi eld study envisaging the success of air sparging with MPE was done by Jang and Aral ( 2009 ).…”

Simulation and optimization technologies for petroleum waste management and remediation process control

“…However, the intrinsic complexities associated with multiphase-flow patterns, interphase mass transfer and media conditions lead to difficulties in system design, operation and assessment. Mathematical models are important tools to help improve understanding of these processes, and have been extensively investigated for many years (Baehr et al, 1989;Sepehr and Samani, 1993;Lundegard and Andersen, 1996;Jennings and Patil, 2002;Rahbeh and Mohtar, 2007).…”

“…The study investigated the effect of air compressibility on modeling outputs which was normally ignored by the previous studies, and revealed that the presence of air channels and bubbles may strongly affect the transport of chemicals. Rahbeh and Mohtar (2007) developed a numerical model for the design and operation of AS and SVE systems under heterogeneous soil conditions. The model consisted of a steady-state air flow module (to determine the capillary pressure head distribution), and a multiphase (including aqueous, gaseous, and solid phases) contaminant transport module.…”