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Article: Three-dimensional hybrid modeling of soil vapor extraction

TitleThree-dimensional hybrid modeling of soil vapor extraction
Authors
KeywordsEngineering Design Tools
In-Situ Decontamination
Sensitivity Analysis
Soil Vapor Extraction
Three-Dimensional Mathematical Modeling
Volatile Organic Compounds
Issue Date2000
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
Transactions Hong Kong Institution Of Engineers, 2000, v. 7 n. 3, p. 28-33 How to Cite?
AbstractSoil vapor extraction (SVE) is being used to decontaminate the north apron area of the former Hong Kong International Airport at Kai Tak. Although SVE is a proven effective in-situ cleanup technology for volatile organic compounds (VOCs), most systems designed to date are based on empirical methods, rules-of-thumb, or results obtained from time-consuming and expensive pilot-scale field tests. Therefore, engineering design tools are definitely needed to extrapolate laboratory results to field applications, to evaluate field test results, to test hypothesis, to evaluate different subsurface scenarios, to optimize operation parameters, to predict field performance and to adjust operation parameters for unanticipated ground conditions. Most existing numerical models use a two-step approach: (1) computation of the negative air pressure distribution induced by the suction applied, followed by (2) simulation of the transport and fate of the contaminant. However, this approach requires a simulation domain considerably larger than the contaminated zone to obtain an accurate air pressure distribution. It is an excessive use of computing resources as only a very small portion of the generated air pressure data will be used for the simulation of contaminant transport. The problem is particularly acute in three-dimensional and multiple-well extraction problems. A three-dimensional hybrid model is thus developed to alleviate these problems in this paper. The model provides the necessary but simple-to-use engineering design tools for the decontamination process. An example application of the model is also presented.
Persistent Identifierhttp://hdl.handle.net/10722/150516
ISSN
2015 SCImago Journal Rankings: 0.145
References

 

DC FieldValueLanguage
dc.contributor.authorYeung, ATen_US
dc.contributor.authorHsu, AHTen_US
dc.date.accessioned2012-06-26T06:05:22Z-
dc.date.available2012-06-26T06:05:22Z-
dc.date.issued2000en_US
dc.identifier.citationTransactions Hong Kong Institution Of Engineers, 2000, v. 7 n. 3, p. 28-33en_US
dc.identifier.issn1023-697Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/150516-
dc.description.abstractSoil vapor extraction (SVE) is being used to decontaminate the north apron area of the former Hong Kong International Airport at Kai Tak. Although SVE is a proven effective in-situ cleanup technology for volatile organic compounds (VOCs), most systems designed to date are based on empirical methods, rules-of-thumb, or results obtained from time-consuming and expensive pilot-scale field tests. Therefore, engineering design tools are definitely needed to extrapolate laboratory results to field applications, to evaluate field test results, to test hypothesis, to evaluate different subsurface scenarios, to optimize operation parameters, to predict field performance and to adjust operation parameters for unanticipated ground conditions. Most existing numerical models use a two-step approach: (1) computation of the negative air pressure distribution induced by the suction applied, followed by (2) simulation of the transport and fate of the contaminant. However, this approach requires a simulation domain considerably larger than the contaminated zone to obtain an accurate air pressure distribution. It is an excessive use of computing resources as only a very small portion of the generated air pressure data will be used for the simulation of contaminant transport. The problem is particularly acute in three-dimensional and multiple-well extraction problems. A three-dimensional hybrid model is thus developed to alleviate these problems in this paper. The model provides the necessary but simple-to-use engineering design tools for the decontamination process. An example application of the model is also presented.en_US
dc.languageengen_US
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.aspen_US
dc.relation.ispartofTransactions Hong Kong Institution of Engineersen_US
dc.subjectEngineering Design Toolsen_US
dc.subjectIn-Situ Decontaminationen_US
dc.subjectSensitivity Analysisen_US
dc.subjectSoil Vapor Extractionen_US
dc.subjectThree-Dimensional Mathematical Modelingen_US
dc.subjectVolatile Organic Compoundsen_US
dc.titleThree-dimensional hybrid modeling of soil vapor extractionen_US
dc.typeArticleen_US
dc.identifier.emailYeung, AT:yeungat@hkucc.hku.hken_US
dc.identifier.authorityYeung, AT=rp00203en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-75949086117en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-75949086117&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume7en_US
dc.identifier.issue3en_US
dc.identifier.spage28en_US
dc.identifier.epage33en_US
dc.publisher.placeHong Kongen_US
dc.identifier.scopusauthoridYeung, AT=7102390361en_US
dc.identifier.scopusauthoridHsu, AHT=35368699800en_US

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