Design and characterization of macroporous alumina membranes for passive samplers of water contaminants

Macroporous ceramic membranes with hierarchical pore structure were developed and characterized for the time-integrated analysis of water contaminants. The alumina membranes were boosted to allow a suitable diffusion rate for envisaged applications. Sacrificial fugitives as cornstarch and graphite a...

Full description

Bibliographic Details
Authors: Orera, V. M., Silva-Treviño, J., Franquet-Griell, Helena, Lacorte Bruguera, Silvia
Format: article
Status:Versión aceptada para publicación
Publication Date:2018
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/180932
Online Access:http://hdl.handle.net/10261/180932
Access Level:Open access
Keyword:Macroporous ceramic membrane
Hierarchical pore structure
Al2O3
Diffusion coefficient measurement
Passive sampler
id ES_4fc2786704dc1dfc7c5c859f7fbc954e
oai_identifier_str oai:digital.csic.es:10261/180932
network_acronym_str ES
network_name_str España
repository_id_str
spelling Design and characterization of macroporous alumina membranes for passive samplers of water contaminantsOrera, V. M.Silva-Treviño, J.Franquet-Griell, HelenaLacorte Bruguera, SilviaMacroporous ceramic membraneHierarchical pore structureAl2O3Diffusion coefficient measurementPassive samplerMacroporous ceramic membranes with hierarchical pore structure were developed and characterized for the time-integrated analysis of water contaminants. The alumina membranes were boosted to allow a suitable diffusion rate for envisaged applications. Sacrificial fugitives as cornstarch and graphite and partial sintering technique were utilized for the control of pore structure and morphology. The present study includes: (i) Development of ceramic membrane preparation methods based on wet forming techniques and partial sintering in order to control of membrane parameters such as porosity, tortuosity factor and thickness; (ii) Microstructural characterization of the ceramic membranes using two complementary techniques: Hg-porosimetry and SEM; (iii) the diffusion tests performed under laboratory conditions by an innovative, easy and accurate method based in the use of methylene blue (C16H18ClN3S) water solutions as test compound to study the characteristics of ceramic membranes. Using slip casting and partial sintering processing three different Al2O3 membrane configurations with high values 34.5, 36.9 and 39.6 vol% of interconnected porosity and 1.75, 1.7 and 1.3 mm thickness were prepared. The pore morphology consisted of spherical cavities of 5-10 μm diameter and small pores of 70–200 nm. This study also gathers the basis for the calculation of diffusion coefficients, membrane geometrical factor and sampling rates using methylene blue water solutions whose concentration can be accurately determined by optical absorption measurements at 664 nm. Diffusion coefficients for methylene blue range from 2.3 ± 0.5E-8 to 3.0 ± 0.5E-8 cm2 s−1 increasing as connected porosity increases and membrane thickness decreases. The membrane geometrical factors are low, between 0.6 and 1E-02 and Archie’s constants large 4.5–5.5. This has been associated to the bimodal pore structure with coexistence of large and small pores that may increase the tortuosity factors in membranes. The macroporous ceramic membranes herein developed are suitable for the fabrication of passive samplers aimed at preconcentrating organic contaminants in water.Financial support from the Spanish Ministerio de Economía y Competitividad under the projects CTM2014-60199-P regarding the monitoring of cytostatic compounds and MAT2015-68078-R for the development of the ceramic membranes is acknowledged. HF acknowledges FPI grant BES-2012-053000.Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/180932reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2014-60199-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-68078-Rhttps://doi.org/10.1016/j.jeurceramsoc.2017.12.012Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1809322026-05-22T06:33:51Z
dc.title.none.fl_str_mv Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
title Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
spellingShingle Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
Orera, V. M.
Macroporous ceramic membrane
Hierarchical pore structure
Al2O3
Diffusion coefficient measurement
Passive sampler
title_short Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
title_full Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
title_fullStr Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
title_full_unstemmed Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
title_sort Design and characterization of macroporous alumina membranes for passive samplers of water contaminants
dc.creator.none.fl_str_mv Orera, V. M.
Silva-Treviño, J.
Franquet-Griell, Helena
Lacorte Bruguera, Silvia
author Orera, V. M.
author_facet Orera, V. M.
Silva-Treviño, J.
Franquet-Griell, Helena
Lacorte Bruguera, Silvia
author_role author
author2 Silva-Treviño, J.
Franquet-Griell, Helena
Lacorte Bruguera, Silvia
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Macroporous ceramic membrane
Hierarchical pore structure
Al2O3
Diffusion coefficient measurement
Passive sampler
topic Macroporous ceramic membrane
Hierarchical pore structure
Al2O3
Diffusion coefficient measurement
Passive sampler
description Macroporous ceramic membranes with hierarchical pore structure were developed and characterized for the time-integrated analysis of water contaminants. The alumina membranes were boosted to allow a suitable diffusion rate for envisaged applications. Sacrificial fugitives as cornstarch and graphite and partial sintering technique were utilized for the control of pore structure and morphology. The present study includes: (i) Development of ceramic membrane preparation methods based on wet forming techniques and partial sintering in order to control of membrane parameters such as porosity, tortuosity factor and thickness; (ii) Microstructural characterization of the ceramic membranes using two complementary techniques: Hg-porosimetry and SEM; (iii) the diffusion tests performed under laboratory conditions by an innovative, easy and accurate method based in the use of methylene blue (C16H18ClN3S) water solutions as test compound to study the characteristics of ceramic membranes. Using slip casting and partial sintering processing three different Al2O3 membrane configurations with high values 34.5, 36.9 and 39.6 vol% of interconnected porosity and 1.75, 1.7 and 1.3 mm thickness were prepared. The pore morphology consisted of spherical cavities of 5-10 μm diameter and small pores of 70–200 nm. This study also gathers the basis for the calculation of diffusion coefficients, membrane geometrical factor and sampling rates using methylene blue water solutions whose concentration can be accurately determined by optical absorption measurements at 664 nm. Diffusion coefficients for methylene blue range from 2.3 ± 0.5E-8 to 3.0 ± 0.5E-8 cm2 s−1 increasing as connected porosity increases and membrane thickness decreases. The membrane geometrical factors are low, between 0.6 and 1E-02 and Archie’s constants large 4.5–5.5. This has been associated to the bimodal pore structure with coexistence of large and small pores that may increase the tortuosity factors in membranes. The macroporous ceramic membranes herein developed are suitable for the fabrication of passive samplers aimed at preconcentrating organic contaminants in water.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/180932
url http://hdl.handle.net/10261/180932
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2014-60199-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-68078-R
https://doi.org/10.1016/j.jeurceramsoc.2017.12.012
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407839568527360
score 15.812429

Similar Items