Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures

Difluoromethane (R-32) is a hydrofluorocarbon (HFC) that has been massively used over the last 30 years in refrigeration and air conditioning as a primary component of azeotropic or close boiling refrigerant mixtures. Despite environmental directives commanded to drastically reduce the use of HFCs,...

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Autores: Pardo Pardo, Fernando|||0000-0001-9821-0310, Gutiérrez Hernández, Sergio Valentín|||0000-0002-9756-4157, Rodríguez San Miguel, Paula, Zarca Lago, Gabriel|||0000-0002-4072-4252, Urtiaga Mendia, Ana María|||0000-0002-8189-9171
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/29174
Acceso en línea:https://hdl.handle.net/10902/29174
Access Level:acceso abierto
Palabra clave:Thin film composite
Spray coating
Fluorinated hydrocarbon
Gas separation
Scale-up
Pebax membrane
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spelling Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixturesPardo Pardo, Fernando|||0000-0001-9821-0310Gutiérrez Hernández, Sergio Valentín|||0000-0002-9756-4157Rodríguez San Miguel, PaulaZarca Lago, Gabriel|||0000-0002-4072-4252Urtiaga Mendia, Ana María|||0000-0002-8189-9171Thin film compositeSpray coatingFluorinated hydrocarbonGas separationScale-upPebax membraneDifluoromethane (R-32) is a hydrofluorocarbon (HFC) that has been massively used over the last 30 years in refrigeration and air conditioning as a primary component of azeotropic or close boiling refrigerant mixtures. Despite environmental directives commanded to drastically reduce the use of HFCs, R-32 has excellent thermodynamic properties and moderate GWP, thus its recovery from depleted mixtures collected from end-of-life equipment is sought to synthesize alternative low-GWP refrigerant blends. Membrane separation using composite polymer/ionic liquid membranes based on poly-ether-block-amide have shown potential to separate R-32 from other fluorinated hydrocarbons, yet the development of this type of composite membranes still remains at laboratory scale. In this work, a spray coating technique was successfully applied to create defect-free thin selective layers of neat Pebax®1657, Pebax®1657/40 wt% [C2C1im][BF4] and Pebax®1657/40 wt% [C2C1im][SCN] coated on porous PVDF substrates. This methodology was transferred from the lab-scale tests (12.6 cm2) to a custom pilot set-up (300 cm2). The pilot results confirmed the superior performance and stability of [C2C1im][SCN]-based membranes, which allowed the recovery of up to 64.3% and 67.1% R-32 from the refrigerant mixtures R-410A (69.8 mol % R-32 and 30.2 mol % R-125) and R-454B (82.1 mol % R-32 and 17.9 mol % R-1234yf) at 6 bar, increasing the R-32 permeate concentration up to 89.6 and 95.9 mol %, respectively. These results highlight the need to expand the knowledge of this type of gas separation membranes towards thinner and defect-free selective dense layers with the purpose of approaching their real applications.This research is supported by Project KET4F-Gas – SOE2/P1/P0823, Project PID2019-105827RB-I00 funded by MCIN/AEI/10.1039/501100011033 (Spain), and project LIFE4F-Gases (LIFE20CCM/ES/001748) co-funded by the European Union LIFE programme. F.P. acknowledges the post-doctoral fellowship (IJC2020-043134-I, ‘Juan de la Cierva Incorporación’) funded by the Spanish Ministry of Science and Innovation MCIN/AEI/10.13039/501100011033 and the European Union NextGenerationEU/PRTR. S. V. G. acknowledges the pre-doctoral fellowship FPI PRE2020-093568, funded by the Spanish Ministry of Science and Innovation MCIN/AEI/10.13039/501100011033 and by “ESF Investing in your future”.ElsevierUniversidad de Cantabria20232023-09-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/29174Separation and Purification Technology, 2023, 320, 124115reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/291742026-06-02T12:39:31Z
dc.title.none.fl_str_mv Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
title Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
spellingShingle Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
Pardo Pardo, Fernando|||0000-0001-9821-0310
Thin film composite
Spray coating
Fluorinated hydrocarbon
Gas separation
Scale-up
Pebax membrane
title_short Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
title_full Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
title_fullStr Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
title_full_unstemmed Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
title_sort Polymer/ionic liquid pilot scale membrane prototype for the recovery of difluoromethane (R-32) from refrigerant mixtures
dc.creator.none.fl_str_mv Pardo Pardo, Fernando|||0000-0001-9821-0310
Gutiérrez Hernández, Sergio Valentín|||0000-0002-9756-4157
Rodríguez San Miguel, Paula
Zarca Lago, Gabriel|||0000-0002-4072-4252
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
author Pardo Pardo, Fernando|||0000-0001-9821-0310
author_facet Pardo Pardo, Fernando|||0000-0001-9821-0310
Gutiérrez Hernández, Sergio Valentín|||0000-0002-9756-4157
Rodríguez San Miguel, Paula
Zarca Lago, Gabriel|||0000-0002-4072-4252
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
author_role author
author2 Gutiérrez Hernández, Sergio Valentín|||0000-0002-9756-4157
Rodríguez San Miguel, Paula
Zarca Lago, Gabriel|||0000-0002-4072-4252
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Thin film composite
Spray coating
Fluorinated hydrocarbon
Gas separation
Scale-up
Pebax membrane
topic Thin film composite
Spray coating
Fluorinated hydrocarbon
Gas separation
Scale-up
Pebax membrane
description Difluoromethane (R-32) is a hydrofluorocarbon (HFC) that has been massively used over the last 30 years in refrigeration and air conditioning as a primary component of azeotropic or close boiling refrigerant mixtures. Despite environmental directives commanded to drastically reduce the use of HFCs, R-32 has excellent thermodynamic properties and moderate GWP, thus its recovery from depleted mixtures collected from end-of-life equipment is sought to synthesize alternative low-GWP refrigerant blends. Membrane separation using composite polymer/ionic liquid membranes based on poly-ether-block-amide have shown potential to separate R-32 from other fluorinated hydrocarbons, yet the development of this type of composite membranes still remains at laboratory scale. In this work, a spray coating technique was successfully applied to create defect-free thin selective layers of neat Pebax®1657, Pebax®1657/40 wt% [C2C1im][BF4] and Pebax®1657/40 wt% [C2C1im][SCN] coated on porous PVDF substrates. This methodology was transferred from the lab-scale tests (12.6 cm2) to a custom pilot set-up (300 cm2). The pilot results confirmed the superior performance and stability of [C2C1im][SCN]-based membranes, which allowed the recovery of up to 64.3% and 67.1% R-32 from the refrigerant mixtures R-410A (69.8 mol % R-32 and 30.2 mol % R-125) and R-454B (82.1 mol % R-32 and 17.9 mol % R-1234yf) at 6 bar, increasing the R-32 permeate concentration up to 89.6 and 95.9 mol %, respectively. These results highlight the need to expand the knowledge of this type of gas separation membranes towards thinner and defect-free selective dense layers with the purpose of approaching their real applications.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-09-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/29174
url https://hdl.handle.net/10902/29174
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Separation and Purification Technology, 2023, 320, 124115
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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