A Novel Biomineralization Process for Continuous, Selective Recovery of Rare Earth Elements

Canadian Institute of Mining, Metallurgy and Petroleum
A. J. Murray S. Singh D. Vavlekas M. R. Tolley T. P. Hathway R. E. Baylis R. Boden L. E. Macaskie
Organization:
Canadian Institute of Mining, Metallurgy and Petroleum
Pages:
10
File Size:
1023 KB
Publication Date:
Jan 1, 2014

Abstract

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We report rare earth element (REE) recovery using immobilized Serratia biofilm depositing metal phosphate via a robust enzymatic mechanism. Activity was approximately halved at pH 3.5 and restored at pH 5.5. REE(III) was recovered selectively against Th(IV) but the method was non-selective between different REEs (La, Y, Eu, Nd). Biofilms were active for a year (half life of ~ 3 months). The activity of aged biofilm was enhanced by pre-nucleation (‘priming’) with NdPO4 prior to onset of flow-through conditions. The use of different ‘priming’ metals and bacteria via a combinatorial approach revealed some REE selectivity through the selective exclusion of specific REEs.
Citation

APA: A. J. Murray S. Singh D. Vavlekas M. R. Tolley T. P. Hathway R. E. Baylis R. Boden L. E. Macaskie  (2014)  A Novel Biomineralization Process for Continuous, Selective Recovery of Rare Earth Elements

MLA: A. J. Murray S. Singh D. Vavlekas M. R. Tolley T. P. Hathway R. E. Baylis R. Boden L. E. Macaskie A Novel Biomineralization Process for Continuous, Selective Recovery of Rare Earth Elements. Canadian Institute of Mining, Metallurgy and Petroleum, 2014.

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