| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Bacteriophage-based Sorption of Rare Earth Elements from Dilute Aqueous Solutions |
| Author(s) |
Inseok Chae, Fiona M. Doyle, Seung-Wuk Lee |
| On-Site Speaker (Planned) |
Fiona M. Doyle |
| Abstract Scope |
To address an ongoing need for environmentally benign approaches for extracting rare earth elements (REE) from ores and secondary sources, we present a novel biosorption method for separating REE from dilute aqueous solutions using bacteriophage (phage). Our approach involves the genetic engineering of the major coat protein pVIII of the M13 bacteriophage (phage) with the lanmodulin mimetic peptide, which binds REEs. We present results demonstrating the ability of the modified bacteriophage to extract REEs from dilute aqueous chloride solutions (on the order of µM concentrations) buffered by sodium acetate at pH 5, the structural changes of the pVIII protein, and the aggregation of the engineered phage induced by the REE uptake. We also report on the ability to desorb REE from the phage by pH modulation and demonstrate the recyclability of phage. Finally, we discuss how phage-based biosorption might be utilized in commercial hydrometallurgical operations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Hydrometallurgy, Extraction and Processing, Other |