Multi-Site Air Sparging

2002 ◽  
Author(s):  
BATTELLE MEMORIAL INST COLUMBUS OH
Keyword(s):  
Air Sparging

Diagnosis of in Situ Air Sparging Performance Using Groundwater Pressure Changes During Startup and Shutdown

2001 ◽  
Author(s):  
Richard L. Johnson ◽  
Paul C. Johnson ◽  
Tim L. Johnson ◽  
Neil Thomas ◽  
Andrea Leason
Keyword(s):  
Air Sparging ◽  
Pressure Changes

A novel approach in numerical simulation of contaminant removal by air sparging

2007 ◽  
Vol 7 (3) ◽  
pp. 163-170
Author(s):  
N. Jacimovic ◽  
T. Hosoda ◽  
M. Ivetic ◽  
K. Kishida
Keyword(s):  
Mass Transfer ◽  
Deterministic Model ◽  
Water Phase ◽  
Air Sparging ◽  
Order Kinetic ◽  
Contaminant Removal ◽  
Water Compartments ◽  
Novel Approach ◽  
Adopted Model ◽  
Air Channels

The paper presents a mechanistic/deterministic model for simulation of mass removal during air sparging. From the point of numerical modeling, there are two issues considering air sparging: modeling of air flow and distribution and modeling of mass transport and transfer. Several processes, which are commonly neglected, such as air channeling and pollutant advection by the water phase, are taken into account. The numerical model presented in this paper considers all relevant for mass transfer during the air sparging. Model includes hydrodynamics of air and water phase; calculated air volume content is divided into a number of air channels surrounded by the water phase, which is divided into two compartments. First compartment is immobile and it is in contact with air phase, while the second compartment is mobile. This “mobile-immobile” formulation is a common approach for description of solute transport by groundwater. Mass transfer between two water compartments is modeled as a first order kinetic, where the mass transfer coefficient, representing diffusion and advection in the water phase towards the air channels, is parameter needed to be calibrated. Sorption for both water compartments is considered. The adopted model of contaminant evaporation at the air-water interface is verified by comparison with experimental results available from published sources. Model is used for simulation of two-dimensional air sparging laboratory experiment. Good overall agreement is observed. It is showed that the efficiency of air sparging can be influenced by natural groundwater flow.

Effectiveness of Oxygen-Saturated Seawater Injections and Air Sparging Technologies in Remediation of Coastal Marine Sediments from Sludge

2021 ◽  
Author(s):  
Borja Ferrández-Gómez ◽  
Antonio Sánchez ◽  
Juana D. Jordá ◽  
Eva S. Fonfría ◽  
César Bordehore ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Air Sparging ◽  
Coastal Marine Sediments ◽  
Coastal Marine

Deep Air Sparging-15 to 46 m beneath the Water Table

2007 ◽  
Vol 27 (3) ◽  
pp. 118-126 ◽  
Author(s):  
Leslie A. Klinchuch ◽  
Nigel Goulding ◽  
Steven R. James ◽  
Jerehmy J. Gies
Keyword(s):  
Water Table ◽  
Air Sparging
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