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Extraction of Lithium from Spodumene by Bioleaching by I. Rezza; E. Salinas; V. Calvente; D. Benuzzi; M.I. Sanz de Tosetti is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The recovery of lithium from spodumene (6.9% Li2O) by bioleaching was investigated. This process was carried out using heterotrophic micro-organisms previously isolated from the mineral. Penicillium purpurogenum, Aspergillus niger and Rhodotorula rubra were assayed separately. Two different media were used for bioleaching; one of them (M2 medium) was highly limited in Mg2+, Fe2+ and K+. The assays were carried out in 500 ml Erlenmeyer flasks with 1 g of ground mineral at 50-80 mesh and 150 ml of leaching medium. Lithium extracted and accumulated in biomass during 30 d of bioleaching with P. purpurogenum was 6.35 mg % dry weight (d.w.) in M1 medium and 10.8 mg % d.w. in M2 medium, while in the leach liquor, Li concentration was 1.06 ppm (M1 medium) and 1.26 ppm (M2 medium). Results of leaching on day 30 with R. rubra were 5.87 mg % d.w. and 16.7 mg % d.w. of lithium accumulated in biomass in M1 medium and M2 medium, respectively. In leach liquor, lithium was 0.5 ppm (M1 medium) and 1.53 ppm (M2 medium). Aspergillus niger was able to accumulate 1.60 mg % d.w. (M1 medium) and 5.1 mg % d.w. of lithium (M2 medium) in biomass. Lithium in leach liquor was 0.37 ppm (M1 medium) and 0.75 ppm

Who reads Extraction of Lithium from Spodumene by Bioleaching?

Author

I. Rezza; E. Salinas; V. Calvente; D. Benuzzi; M.I. Sanz de Tosetti

Publisher

Oxford University Press (OUP)

Published

1997

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)