Soil remediation via bioventing, vapor extraction and transition regime between vapor extraction and bioventing
نویسندگان
چکیده
منابع مشابه
Column Experiment Design to Estimate Parameters for Modeling of Vapor Extraction/Bioventing Sequential Soil Treatment
Setting up accurate and user-friendly models of physical, chemical and biological processes is particularly useful for design and optimization of vapor extraction/bioventing (SVE/SBV) systems, and prediction of residual concentrations and remediation time. Despite improvment of model structures, the optimum experiments should be designed for model calibration. The feasibility of parameter estim...
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Bioventing has emerged as one of the most cost-effective in situ technologies available to address petroleum light-hydrocarbon spills, one of the most common sources of soil pollution. However, the major drawback associated with this technology is the extended treatment time often required. The present study aimed to illustrate how an intended air-injection bioventing technology can be transfor...
متن کاملNon-aqueous phase liquid spreading during soil vapor extraction.
Many non-aqueous phase liquids (NAPLs) are expected to spread at the air-water interface, particularly under non-equilibrium conditions. In the vadose zone, this spreading should increase the surface area for mass transfer and the efficiency of volatile NAPL recovery by soil vapor extraction (SVE). Observations of spreading on water wet surfaces led to a conceptual model of oil spreading vertic...
متن کاملToluene Removal from Sandy Soils via In Situ Technologies with an Emphasis on Factors Influencing Soil Vapor Extraction
The integration of bioventing (BV) and soil vapor extraction (SVE) appears to be an effective combination method for soil decontamination. This paper serves two main purposes: it evaluates the effects of soil water content (SWC) and air flow rate on SVE and it investigates the transition regime between BV and SVE for toluene removal from sandy soils. 96 hours after air injection, more than 97% ...
متن کاملSoil Vapor Extraction Removal of Semi Volatile Organic Compounds in Soil: A Pilot-scale Study
Semi Volatile Organic Compounds (SVOCs) contamination in soil was a widespread problem in China due to industrial pollutants leak and discharge. A pilot study of SVE and related combination techniques was demonstrated for soil contaminated with SVOCs. A miniaturization SVE system was applied in research and performance of this extraction system was measurement. The results of the field test sho...
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ژورنال
عنوان ژورنال: International Journal of Environmental Health Engineering
سال: 2014
ISSN: 2277-9183
DOI: 10.4103/2277-9183.131798