Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics
The aim of the present work is the recycling treatment of tubular α-Al<sub>2</sub>O<sub>3</sub>-supported ceramic membranes with a Pd/Ag selective layer, employed in hydrogen production with integrated CO<sub>2</sub> capture. A nitric acid leaching treatment was i...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-07-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/7/723 |
| _version_ | 1797445266408734720 |
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| author | Luigi Toro Emanuela Moscardini Ludovica M. Baldassari Flavia Forte Jacopo Coletta Emma Palo Vittoria Cosentino Fabio Angelini Alba Arratibel Plazaola Francesca Pagnanelli Pietro Altimari |
| author_facet | Luigi Toro Emanuela Moscardini Ludovica M. Baldassari Flavia Forte Jacopo Coletta Emma Palo Vittoria Cosentino Fabio Angelini Alba Arratibel Plazaola Francesca Pagnanelli Pietro Altimari |
| author_sort | Luigi Toro |
| collection | DOAJ |
| description | The aim of the present work is the recycling treatment of tubular α-Al<sub>2</sub>O<sub>3</sub>-supported ceramic membranes with a Pd/Ag selective layer, employed in hydrogen production with integrated CO<sub>2</sub> capture. A nitric acid leaching treatment was investigated, and recovered ceramic supports were characterized, demonstrating their suitability for the production of novel efficient membranes. The main objective was the metal dissolution that preserved the support integrity in order to allow the recovered membrane to be suitable for a new deposition of the selective layer. The conditions that obtained a satisfactory dissolution rate of the Pd/Ag layer while avoiding the support to be damaged are as follows: nitric acid 3 M, 60 °C and 3.5 h of reaction time. The efficiency of the recovered supports was determined by nitrogen permeance and surface roughness analysis, and the economic figures were analysed to evaluate the convenience of the regeneration process and the advantage of a recycled membrane over a new membrane. The experimentation carried out demonstrates the proposed process feasibility both in terms of recycling and economic results. |
| first_indexed | 2024-03-09T13:24:17Z |
| format | Article |
| id | doaj.art-5e1208acdac84f4c9feeffbaf572788c |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T13:24:17Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-5e1208acdac84f4c9feeffbaf572788c2023-11-30T21:26:22ZengMDPI AGMembranes2077-03752022-07-0112772310.3390/membranes12070723Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and EconomicsLuigi Toro0Emanuela Moscardini1Ludovica M. Baldassari2Flavia Forte3Jacopo Coletta4Emma Palo5Vittoria Cosentino6Fabio Angelini7Alba Arratibel Plazaola8Francesca Pagnanelli9Pietro Altimari10Eco Recycling Srl, Via Francesco Siacci, 4, 00197 Rome, ItalyEco Recycling Srl, Via Francesco Siacci, 4, 00197 Rome, ItalyEco Recycling Srl, Via Francesco Siacci, 4, 00197 Rome, ItalyEco Recycling Srl, Via Francesco Siacci, 4, 00197 Rome, ItalyEco Recycling Srl, Via Francesco Siacci, 4, 00197 Rome, ItalyKT—Kinetics Technology Spa, Viale Castello della Magliana, 27, 00148 Rome, ItalyKT—Kinetics Technology Spa, Viale Castello della Magliana, 27, 00148 Rome, ItalyKT—Kinetics Technology Spa, Viale Castello della Magliana, 27, 00148 Rome, ItalyMembrane Technology and Process Intensification/Materials and Processes, TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi 2, 20009 San Sebastian, SpainDepartment of Chemistry, Sapienza University of Rome, P.Le A. Moro 5, 00185 Rome, ItalyDepartment of Chemistry, Sapienza University of Rome, P.Le A. Moro 5, 00185 Rome, ItalyThe aim of the present work is the recycling treatment of tubular α-Al<sub>2</sub>O<sub>3</sub>-supported ceramic membranes with a Pd/Ag selective layer, employed in hydrogen production with integrated CO<sub>2</sub> capture. A nitric acid leaching treatment was investigated, and recovered ceramic supports were characterized, demonstrating their suitability for the production of novel efficient membranes. The main objective was the metal dissolution that preserved the support integrity in order to allow the recovered membrane to be suitable for a new deposition of the selective layer. The conditions that obtained a satisfactory dissolution rate of the Pd/Ag layer while avoiding the support to be damaged are as follows: nitric acid 3 M, 60 °C and 3.5 h of reaction time. The efficiency of the recovered supports was determined by nitrogen permeance and surface roughness analysis, and the economic figures were analysed to evaluate the convenience of the regeneration process and the advantage of a recycled membrane over a new membrane. The experimentation carried out demonstrates the proposed process feasibility both in terms of recycling and economic results.https://www.mdpi.com/2077-0375/12/7/723recyclingceramic membranespalladiumCCS technologyhydrogenintegrated CO<sub>2</sub> capture |
| spellingShingle | Luigi Toro Emanuela Moscardini Ludovica M. Baldassari Flavia Forte Jacopo Coletta Emma Palo Vittoria Cosentino Fabio Angelini Alba Arratibel Plazaola Francesca Pagnanelli Pietro Altimari Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics Membranes recycling ceramic membranes palladium CCS technology hydrogen integrated CO<sub>2</sub> capture |
| title | Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics |
| title_full | Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics |
| title_fullStr | Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics |
| title_full_unstemmed | Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics |
| title_short | Regeneration of Exhausted Palladium-Based Membranes: Recycling Process and Economics |
| title_sort | regeneration of exhausted palladium based membranes recycling process and economics |
| topic | recycling ceramic membranes palladium CCS technology hydrogen integrated CO<sub>2</sub> capture |
| url | https://www.mdpi.com/2077-0375/12/7/723 |
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