A fractal-like kinetics equation to calculate landfill methane production

Autores
Meraz Cabrera, Rosa Laura; Vidales, Ana Maria; Domínguez, Armando
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Landfill appears as a convenient choice to get rid of municipal solid waste while providing energy, due to methane generated through anaerobic fermentation. However, without capture and treatment landfill gas is considered an important source of atmospheric methane. The control and use of this gas require knowledge of both, current yield and long-term accumulative production. These values are usually calculated with mathematical expressions that consider 100% of conversion, and homogeneous chemical reactivity inside the fill. Nevertheless, fermentation in landfills is erratic and spatially heterogeneous. This work introduces a fractal-like chemical kinetics equation to calculate methane generation rate from landfill, QCH4 (m 3/year), in the way: QCH4 = L 0∑j∑iMijCij 0ki(tj)-ds /2exp[-kitj], where fermentable wastes are partitioned in readily, moderately and slowly biodegradable categories, L 0 is the potential of methane yield of refuse (m3/tonne under standard conditions), ds is the solid-phase fracton dimension, ki is the reaction kinetics constant of waste category i (year -1), and tj is the time from the year of burying j (year), Cij0 (kg/tonne) and Mij (kg) are the initial concentration and the mass of waste category i landfilled in year j, respectively. The idea behind this equation is that methane production kinetics is limited by the diffusion of hydrolyzed substrate into a heterogeneous solid-phase towards discrete areas, where methanogenesis occurs. A virtual study for a hypothetical case is developed. The predictions from this fractal approach are contrasted with those coming from two equations broadly used in the industrial work. The fractal-like kinetics equation represents better the heterogeneous nature of the fermentation in landfills.
Fil: Meraz Cabrera, Rosa Laura. Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; México
Fil: Vidales, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Fil: Domínguez, Armando. Universidad Autónoma Metropolitana; México
Materia
CHEMICAL KINETICS
FRACTAL
LANDFILL
METHANEΓ
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/137430
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A fractal-like kinetics equation to calculate landfill methane productionMeraz Cabrera, Rosa LauraVidales, Ana MariaDomínguez, ArmandoCHEMICAL KINETICSFRACTALLANDFILLMETHANEΓhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Landfill appears as a convenient choice to get rid of municipal solid waste while providing energy, due to methane generated through anaerobic fermentation. However, without capture and treatment landfill gas is considered an important source of atmospheric methane. The control and use of this gas require knowledge of both, current yield and long-term accumulative production. These values are usually calculated with mathematical expressions that consider 100% of conversion, and homogeneous chemical reactivity inside the fill. Nevertheless, fermentation in landfills is erratic and spatially heterogeneous. This work introduces a fractal-like chemical kinetics equation to calculate methane generation rate from landfill, QCH4 (m 3/year), in the way: QCH4 = L 0∑j∑iMijCij 0ki(tj)-ds /2exp[-kitj], where fermentable wastes are partitioned in readily, moderately and slowly biodegradable categories, L 0 is the potential of methane yield of refuse (m3/tonne under standard conditions), ds is the solid-phase fracton dimension, ki is the reaction kinetics constant of waste category i (year -1), and tj is the time from the year of burying j (year), Cij0 (kg/tonne) and Mij (kg) are the initial concentration and the mass of waste category i landfilled in year j, respectively. The idea behind this equation is that methane production kinetics is limited by the diffusion of hydrolyzed substrate into a heterogeneous solid-phase towards discrete areas, where methanogenesis occurs. A virtual study for a hypothetical case is developed. The predictions from this fractal approach are contrasted with those coming from two equations broadly used in the industrial work. The fractal-like kinetics equation represents better the heterogeneous nature of the fermentation in landfills.Fil: Meraz Cabrera, Rosa Laura. Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; MéxicoFil: Vidales, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; ArgentinaFil: Domínguez, Armando. Universidad Autónoma Metropolitana; MéxicoElsevier2004-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/137430Meraz Cabrera, Rosa Laura; Vidales, Ana Maria; Domínguez, Armando; A fractal-like kinetics equation to calculate landfill methane production; Elsevier; Fuel; 83; 1; 1-2004; 73-800016-2361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0016236103002126info:eu-repo/semantics/altIdentifier/doi/10.1016/S0016-2361(03)00212-6info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:24:44Zoai:ri.conicet.gov.ar:11336/137430instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:24:44.537CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A fractal-like kinetics equation to calculate landfill methane production
title A fractal-like kinetics equation to calculate landfill methane production
spellingShingle A fractal-like kinetics equation to calculate landfill methane production
Meraz Cabrera, Rosa Laura
CHEMICAL KINETICS
FRACTAL
LANDFILL
METHANEΓ
title_short A fractal-like kinetics equation to calculate landfill methane production
title_full A fractal-like kinetics equation to calculate landfill methane production
title_fullStr A fractal-like kinetics equation to calculate landfill methane production
title_full_unstemmed A fractal-like kinetics equation to calculate landfill methane production
title_sort A fractal-like kinetics equation to calculate landfill methane production
dc.creator.none.fl_str_mv Meraz Cabrera, Rosa Laura
Vidales, Ana Maria
Domínguez, Armando
author Meraz Cabrera, Rosa Laura
author_facet Meraz Cabrera, Rosa Laura
Vidales, Ana Maria
Domínguez, Armando
author_role author
author2 Vidales, Ana Maria
Domínguez, Armando
author2_role author
author
dc.subject.none.fl_str_mv CHEMICAL KINETICS
FRACTAL
LANDFILL
METHANEΓ
topic CHEMICAL KINETICS
FRACTAL
LANDFILL
METHANEΓ
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Landfill appears as a convenient choice to get rid of municipal solid waste while providing energy, due to methane generated through anaerobic fermentation. However, without capture and treatment landfill gas is considered an important source of atmospheric methane. The control and use of this gas require knowledge of both, current yield and long-term accumulative production. These values are usually calculated with mathematical expressions that consider 100% of conversion, and homogeneous chemical reactivity inside the fill. Nevertheless, fermentation in landfills is erratic and spatially heterogeneous. This work introduces a fractal-like chemical kinetics equation to calculate methane generation rate from landfill, QCH4 (m 3/year), in the way: QCH4 = L 0∑j∑iMijCij 0ki(tj)-ds /2exp[-kitj], where fermentable wastes are partitioned in readily, moderately and slowly biodegradable categories, L 0 is the potential of methane yield of refuse (m3/tonne under standard conditions), ds is the solid-phase fracton dimension, ki is the reaction kinetics constant of waste category i (year -1), and tj is the time from the year of burying j (year), Cij0 (kg/tonne) and Mij (kg) are the initial concentration and the mass of waste category i landfilled in year j, respectively. The idea behind this equation is that methane production kinetics is limited by the diffusion of hydrolyzed substrate into a heterogeneous solid-phase towards discrete areas, where methanogenesis occurs. A virtual study for a hypothetical case is developed. The predictions from this fractal approach are contrasted with those coming from two equations broadly used in the industrial work. The fractal-like kinetics equation represents better the heterogeneous nature of the fermentation in landfills.
Fil: Meraz Cabrera, Rosa Laura. Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; México
Fil: Vidales, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Fil: Domínguez, Armando. Universidad Autónoma Metropolitana; México
description Landfill appears as a convenient choice to get rid of municipal solid waste while providing energy, due to methane generated through anaerobic fermentation. However, without capture and treatment landfill gas is considered an important source of atmospheric methane. The control and use of this gas require knowledge of both, current yield and long-term accumulative production. These values are usually calculated with mathematical expressions that consider 100% of conversion, and homogeneous chemical reactivity inside the fill. Nevertheless, fermentation in landfills is erratic and spatially heterogeneous. This work introduces a fractal-like chemical kinetics equation to calculate methane generation rate from landfill, QCH4 (m 3/year), in the way: QCH4 = L 0∑j∑iMijCij 0ki(tj)-ds /2exp[-kitj], where fermentable wastes are partitioned in readily, moderately and slowly biodegradable categories, L 0 is the potential of methane yield of refuse (m3/tonne under standard conditions), ds is the solid-phase fracton dimension, ki is the reaction kinetics constant of waste category i (year -1), and tj is the time from the year of burying j (year), Cij0 (kg/tonne) and Mij (kg) are the initial concentration and the mass of waste category i landfilled in year j, respectively. The idea behind this equation is that methane production kinetics is limited by the diffusion of hydrolyzed substrate into a heterogeneous solid-phase towards discrete areas, where methanogenesis occurs. A virtual study for a hypothetical case is developed. The predictions from this fractal approach are contrasted with those coming from two equations broadly used in the industrial work. The fractal-like kinetics equation represents better the heterogeneous nature of the fermentation in landfills.
publishDate 2004
dc.date.none.fl_str_mv 2004-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/137430
Meraz Cabrera, Rosa Laura; Vidales, Ana Maria; Domínguez, Armando; A fractal-like kinetics equation to calculate landfill methane production; Elsevier; Fuel; 83; 1; 1-2004; 73-80
0016-2361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/137430
identifier_str_mv Meraz Cabrera, Rosa Laura; Vidales, Ana Maria; Domínguez, Armando; A fractal-like kinetics equation to calculate landfill methane production; Elsevier; Fuel; 83; 1; 1-2004; 73-80
0016-2361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0016236103002126
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0016-2361(03)00212-6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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