Gas permeability of bentonite barriers: development, construction and testing of a measurement system

Detalhes bibliográficos
Autor(a) principal: Pitanga,Heraldo Nunes
Data de Publicação: 2016
Outros Autores: Vilar,Orencio Monje, Pierson,Patrick
Tipo de documento: Artigo
Idioma: eng
Título da fonte: REM - International Engineering Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2016000400389
Resumo: Abstract This article proposes a testing device to quickly and reliably estimate the gas permeability of bentonite-based clay barriers used in landfill cover systems. The testing methodology is based on a transient gas flow regime that passes through the barrier, therefore not requiring the use of sophisticated equipment that aim to maintain constant differential pressure and measure the gas flow, common requirements for testing methods under a permanent flow regime. To confirm the feasibility of the proposed technique, tests were performed on a pure hydrated bentonite layer, which subsequently encompassed samples of geosynthetic clay liner (GCL) at different moisture contents. Geosynthetic clay liners are often selected as a part of the barrier layer for cover systems in solid waste landfills to prevent infiltration of rainfall and migration of biogas into the atmosphere. The results confirmed the equipment reliability and differentiate the different responses of the gas flow barriers studied, considering their different compositions and different moistures.
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spelling Gas permeability of bentonite barriers: development, construction and testing of a measurement systemclay barriersgas permeabilitypermeameterAbstract This article proposes a testing device to quickly and reliably estimate the gas permeability of bentonite-based clay barriers used in landfill cover systems. The testing methodology is based on a transient gas flow regime that passes through the barrier, therefore not requiring the use of sophisticated equipment that aim to maintain constant differential pressure and measure the gas flow, common requirements for testing methods under a permanent flow regime. To confirm the feasibility of the proposed technique, tests were performed on a pure hydrated bentonite layer, which subsequently encompassed samples of geosynthetic clay liner (GCL) at different moisture contents. Geosynthetic clay liners are often selected as a part of the barrier layer for cover systems in solid waste landfills to prevent infiltration of rainfall and migration of biogas into the atmosphere. The results confirmed the equipment reliability and differentiate the different responses of the gas flow barriers studied, considering their different compositions and different moistures.Fundação Gorceix2016-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2016000400389REM - International Engineering Journal v.69 n.4 2016reponame:REM - International Engineering Journalinstname:Fundação Gorceix (FG)instacron:FG10.1590/0370-44672015690165info:eu-repo/semantics/openAccessPitanga,Heraldo NunesVilar,Orencio MonjePierson,Patrickeng2016-10-17T00:00:00Zoai:scielo:S2448-167X2016000400389Revistahttps://www.rem.com.br/?lang=pt-brPRIhttps://old.scielo.br/oai/scielo-oai.php||editor@rem.com.br2448-167X2448-167Xopendoar:2016-10-17T00:00REM - International Engineering Journal - Fundação Gorceix (FG)false
dc.title.none.fl_str_mv Gas permeability of bentonite barriers: development, construction and testing of a measurement system
title Gas permeability of bentonite barriers: development, construction and testing of a measurement system
spellingShingle Gas permeability of bentonite barriers: development, construction and testing of a measurement system
Pitanga,Heraldo Nunes
clay barriers
gas permeability
permeameter
title_short Gas permeability of bentonite barriers: development, construction and testing of a measurement system
title_full Gas permeability of bentonite barriers: development, construction and testing of a measurement system
title_fullStr Gas permeability of bentonite barriers: development, construction and testing of a measurement system
title_full_unstemmed Gas permeability of bentonite barriers: development, construction and testing of a measurement system
title_sort Gas permeability of bentonite barriers: development, construction and testing of a measurement system
author Pitanga,Heraldo Nunes
author_facet Pitanga,Heraldo Nunes
Vilar,Orencio Monje
Pierson,Patrick
author_role author
author2 Vilar,Orencio Monje
Pierson,Patrick
author2_role author
author
dc.contributor.author.fl_str_mv Pitanga,Heraldo Nunes
Vilar,Orencio Monje
Pierson,Patrick
dc.subject.por.fl_str_mv clay barriers
gas permeability
permeameter
topic clay barriers
gas permeability
permeameter
description Abstract This article proposes a testing device to quickly and reliably estimate the gas permeability of bentonite-based clay barriers used in landfill cover systems. The testing methodology is based on a transient gas flow regime that passes through the barrier, therefore not requiring the use of sophisticated equipment that aim to maintain constant differential pressure and measure the gas flow, common requirements for testing methods under a permanent flow regime. To confirm the feasibility of the proposed technique, tests were performed on a pure hydrated bentonite layer, which subsequently encompassed samples of geosynthetic clay liner (GCL) at different moisture contents. Geosynthetic clay liners are often selected as a part of the barrier layer for cover systems in solid waste landfills to prevent infiltration of rainfall and migration of biogas into the atmosphere. The results confirmed the equipment reliability and differentiate the different responses of the gas flow barriers studied, considering their different compositions and different moistures.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2016000400389
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2016000400389
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0370-44672015690165
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Gorceix
publisher.none.fl_str_mv Fundação Gorceix
dc.source.none.fl_str_mv REM - International Engineering Journal v.69 n.4 2016
reponame:REM - International Engineering Journal
instname:Fundação Gorceix (FG)
instacron:FG
instname_str Fundação Gorceix (FG)
instacron_str FG
institution FG
reponame_str REM - International Engineering Journal
collection REM - International Engineering Journal
repository.name.fl_str_mv REM - International Engineering Journal - Fundação Gorceix (FG)
repository.mail.fl_str_mv ||editor@rem.com.br
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