Abstract
The aim of the present work is the recycling treatment of tubular α-Al2O3-supported ceramic membranes with a Pd/Ag selective layer, employed in hydrogen production with integrated CO2 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.
| Original language | English |
|---|---|
| Article number | 723 |
| Pages (from-to) | 723 |
| Number of pages | 1 |
| Journal | Membranes |
| Volume | 12 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 21 Jul 2022 |
Keywords
- Recycling
- Ceramic membranes
- Palladium
- CCS technology
- Hydrogen
- Integrated CO2 capture
- Economic analysis
- Circular economy
- Prototype plant
- integrated CO capture
Project and Funding Information
- Project ID
- info:eu-repo/grantAgreement/EC/H2020/760944/EU/Advanced MEMBranes and membrane assisted procEsses for pre- and post- combustion CO 2 captuRe/MEMBER
- Funding Info
- This research has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 760944 (MEMBER project).
