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Green photocatalytic mixed matrix membranes for simultaneous arsenic photo-oxidation and water recovery via membrane distillation
Indexado
WoS WOS:001218777000001
Scopus SCOPUS_ID:85187217659
DOI 10.1016/J.SEPPUR.2024.127042
Año 2024
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



This work proposes an innovative integration of Membrane Distillation (MD) and photo-oxidation for a continuous recovery of water from arsenic (As) contaminated solutions coupled with the oxidation of arsenite (As (III)) into arsenate (As(V)). Polyvinylidene fluoride (PVDF) mixed matrix membranes (MMMs) containing titanium dioxide nanoparticles (TiO2 NPs) as photocatalyst were developed. A systematic study elucidated the effect of TiO2 NPs on membranes' morphology prepared via non-solvent-induced phase separation (NIPS) using triethyl phosphate (TEP) as a green solvent for PVDF solubilization. Vacuum membrane distillation (VMD) tests carried out by irradiating the MMMs with ultraviolet (UV) radiation demonstrated the possibility of recovering up to 80 % of the water from As-contaminated synthetic and real multi-ions aqueous solutions from Sila Massif (Italy). The distillate was recovered at a rate of 6.9-7.2 kg center dot m- 2 center dot h-1 (feed inlet temperature of 60 degrees C), while the presence of 7 wt% of TiO2 in PVDF membranes enabled the photo-oxidation of 95 % of the As(III) to As(V) at a first order kinetic constant of 0.0106 min-1. After 5 cycles of As-remediation experiments, post-hoc mechanical testing on the membrane suggested the emergence of polymer embrittlement induced by UV radiation (total irradiation time of 7.5 h), highlighting the urgent need for developing photocatalytic membranes with long-term stability. Overall, this study elucidates at laboratory scale the performance of a coupled and continuous Membrane Distillation (MD) and photo-oxidation system for arsenic (As) remediation, employing microporous hydrophobic green membranes doped with a photocatalyst.

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Disciplinas de Investigación



WOS
Engineering, Chemical
Scopus
Analytical Chemistry
Filtration And Separation
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Santoro, Sergio Hombre Univ Calabria - Italia
Università della Calabria - Italia
2 Occhiuzzi, Jessica - Univ Laquila - Italia
Università degli Studi dell'Aquila - Italia
3 Aquino, Marco - Univ Calabria - Italia
Università della Calabria - Italia
4 Politano, Antonio - Univ Laquila - Italia
Universidad de Chile - Chile
Università degli Studi dell'Aquila - Italia
5 Straface, Salvatore Hombre Univ Calabria - Italia
Università della Calabria - Italia
6 D'Andrea, Giuseppe - Univ Calabria - Italia
Università della Calabria - Italia
7 Carrillo, Cristobal - UNIV ZARAGOZA - España
Universidad de Zaragoza - España
8 Mallada, Reyes - UNIV ZARAGOZA - España
Universidad de Zaragoza - España
9 GARCIA-GARCIA, ALEJANDRA Mujer Universidad de Chile - Chile
Centro Avanzado de Tecnologia para la Mineria - Chile
10 ESTAY-CUENCA, HUMBERTO ANTONIO Hombre Universidad de Chile - Chile
Centro Avanzado de Tecnologia para la Mineria - Chile
11 Xevgenos, Dimitrios - Delft Univ Technol - Países Bajos
Faculteit Techniek, Bestuur en Management, TU Delft - Países Bajos
12 Argurio, Pietro - Univ Calabria - Italia
Università della Calabria - Italia
13 Curcio, Efrem - Univ Calabria - Italia
Università della Calabria - Italia

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Financiamiento



Fuente
FONDECYT
Fondo Nacional de Desarrollo Científico y Tecnológico
Comisión Nacional de Investigación Científica y Tecnológica
European Commission
European Union
REuse in Mining Industries
Renewable Energies for Water Treatment
Basal Financing Program for Scientific and Technological Centers
National Research and Development Agency ANID
National Research and Development Agency ANID through the AMTC Basal Project-Basal Financing Program for Scientific and Technological Centers

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
The financial support of: the European Union through the project H2020-MSCA-RISE REMIND "Renewable Energies for Water Treatment and REuse in Mining Industries" (Grant agreement ID: 823948) , and the National Research and Development Agency ANID (former CONICYT) through the AMTC Basal Project-Basal Financing Program for Scientific and Technological Centers-grant numbers AFB220002/AFB230001 and FONDECYT Regular-grant number 1220088 are kindly acknowledged.
The financial support of: the European Union through the project H2020-MSCA-RISE REMIND “Renewable Energies for Water Treatment and REuse in Mining Industries” (Grant agreement ID: 823948), and the National Research and Development Agency ANID (former CONICYT) through the AMTC Basal Project - Basal Financing Program for Scientific and Technological Centers - grant numbers AFB220002/AFB230001 and FONDECYT Regular - grant number 1220088 are kindly acknowledged.

Muestra la fuente de financiamiento declarada en la publicación.