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| 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
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.
| 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 |
| 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 |
| 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. |