scholarly journals Soil vapor extraction system design: A case study comparing vacuum and pore-gas velocity cutoff criteria

2006 ◽  
Vol 17 (1) ◽  
pp. 55-67 ◽  
Author(s):  
Kenneth L. Dixon ◽  
Ralph L. Nichols
Keyword(s):  
System Design ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Gas Velocity ◽  
Vapor Extraction ◽  
Cutoff Criteria

Soil vapor extraction system design by combinatorial optimization

1996 ◽  
Vol 32 (6) ◽  
pp. 1863-1873 ◽  
Author(s):  
Yung-Hsin Sun ◽  
Marshall W. Davert ◽  
William W-G. Yeh
Keyword(s):  
Combinatorial Optimization ◽  
System Design ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction

A Transient Simulation of Heated Soil Vapor Extraction System

Volume 1 ◽  
2004 ◽  
Author(s):  
T. Roy ◽  
R. S. Amano ◽  
J. Jatkar
Keyword(s):  
Heat Source ◽  
Three Dimensional ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction ◽  
Predictive Tool ◽  
Heating Source ◽  
Time Required ◽  
Heated Soil ◽  
Remediation Process

Soil remediation process by heated soil vapor extraction system has drawn considerably attention for the last few years. The areas around chemical companies or waste disposal sites have been seriously contaminated from the chemicals and other polluting materials that are disposed off. Our present study is concentrated on modeling one transient Heated Soil Vapor Extraction System and predicting the time required for effective remediation. The process developed by Advanced Remedial Technology, consists of a heating source pipe and the extraction well embedded in the soil. The number of heat source pipes and the extraction wells depends on the type of soil, the type of pollutants, moisture content of the soil and the size of the area to be cleaned. The heat source heats the soil, which is transported in the interior part of the soil by means of conduction and convection. This heating of soil results in vaporization of the gases, which are then driven out of the soil by the extraction well. The extraction well consists of the blower which would suck the vaporized gases out of the system. A three-dimensional meshed geometry was developed using gambit. Different boundary conditions were used for heating and suction well and for other boundaries. Concentrations of different chemicals were collected from the actual site and this data was used as an initial condition. The analysis uses the species transport and discrete phase modeling to predict the time required to clean the soil under specific conditions. This analysis could be used for predicting the changes of chemical concentrations in the soil during the remediation process. This will give us more insight to the physical phenomena and serve as a numerical predictive tool for more efficient process.

The Influence of Surface Covers on the Performance of a Soil Vapor Extraction System

2009 ◽  
Vol 37 (8) ◽  
pp. 621-628 ◽  
Author(s):  
Otmane Boudouch ◽  
Yu Ying ◽  
Belkacem Benadda
Keyword(s):  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction

scholarly journals Remediation of a Petroleum Hydrocarbon-Contaminated Site by Soil Vapor Extraction: A Full-Scale Case Study

2020 ◽  
Vol 10 (12) ◽  
pp. 4261
Author(s):  
Claudia Labianca ◽  
Sabino De Gisi ◽  
Francesco Picardi ◽  
Francesco Todaro ◽  
Michele Notarnicola
Keyword(s):  
Petroleum Hydrocarbon ◽  
Petroleum Products ◽  
Full Scale ◽  
Total Petroleum Hydrocarbons ◽  
Soil Vapor Extraction ◽  
Contaminated Site ◽  
Vapor Extraction ◽  
Polycyclic Aromatic

Spills, leaks, and other environmental aspects associated with petroleum products cause hazards to human health and ecosystems. Chemicals involved are total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAHs), solvents, pesticides, and other heavy metals. Soil vapor extraction (SVE) is one of the main in-situ technologies currently employed for the remediation of groundwater and vadose zone contaminated with volatile organic compounds (VOCs). The performance of an SVE remediation system was examined for a petroleum hydrocarbon-contaminated site with attention to remediation targets and final performance. The study assessed: (1) the efficiency of a full-scale remediation system and (2) the influence of parameters affecting the treatment system effectiveness. Results showed how VOC concentration in soil was highly reduced after four year treatment with a global effectiveness of 73%. Some soil samples did not reach the environmental threshold limits and, therefore, an extension of the remediation period was required. The soil texture, humidity, permeability, and the category of considered pollutants were found to influence the amount of total extracted VOCs.

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