RT Journal Article
T1 Influence of biosurfactants in the recovery of REE from monazite using Burkholderia thailandensis
A1 Castro Ruiz, Laura
A1 Gómez-Álvarez, Helena
A1 Carmona, Manuel
A1 Muñoz Sánchez, Jesús Ángel
A1 González González, Felisa
AB The demand of rare earth elements (REE) has grown over the past decades due to their importance in high technology devices such as wind turbines, superconductors, rechargeable batteries, autocatalytic converters, magnets, or LED lighting. The development of clean mining processes is gaining interest and the biomining of REE is mainly focused on monazite using phosphate solubilizing microorganisms. The members of the genus Burkholderia can dissolve phosphorous from inorganic rocks. Furthermore, several species of Burkholderia are able to produce biosurfactants named rhamnolipids. Nevertheless, rhamnolipid interactions with REE have been poorly investigated.The aim of the present work is the study of the solubilization of monazite and the recovery of REE using the bacterium Burkholderia thailandensis, and the influence of the rhamnolipids produced by the bacteria in the REE mobilization. B. thailandensis grown in nutrient broth with 1% monazite (w/v) reached 8.3 mg·l−1 REE after 15 days.To produce rhamnolipids, B. thailandensis was grown in medium supplemented with 10% glycerol and the biosurfactants were extracted. The critical micelle concentration (CMC) was determined: 94.45 mg·l−1 for commercial rhamnolipids and 60.41 mg·l−1 for purified rhamnolipids. The maximum REE solubilization was obtained at CMC reaching 9.36 mg·l−1 with commercial rhamnolipids and 5.13 mg·l−1 with rhamnolipids produced by B. thailandensis E264.
PB Elservier
SN 0304-386X
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/91257
UL https://hdl.handle.net/20.500.14352/91257
LA eng
NO Castro, L.; Gómez-Álvarez, H.; Carmona, M.; González, F.; Muñoz, J. A. Influence of biosurfactants in the recovery of REE from monazite using Burkholderia thailandensis. Hydrometallurgy 2023, 222, 106178.
DS Docta Complutense
RD 9 jun 2025