Study of Microbial Cultures for the Bioleaching of Scandium from Alumina Industry By-Products †
Abstract
:1. Introduction
2. Materials and Methods
2.1. Bauxite Residue
2.2. Sources of Microorganisms and Cultivation Mineral Media
2.3. Bioleaching Experiments and Sampling
2.4. Analytical Methods
3. Results and Discussion
3.1. Preliminary Tests
3.2. Parameters Evaluation
3.3. Organic Acids Production
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Acknowledgments
Conflicts of Interest
References
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Culture | Acetobacter tropicalis | Digestate Inoculum | |||||||
---|---|---|---|---|---|---|---|---|---|
Temp | 30 °C | 20 °C | 30 °C | ||||||
S/L | 10% | 20% | 30% | 10% | 20% | 30% | 10% | 20% | 30% |
days | % Sc recovery | ||||||||
1 | 20.4 | 5.5 | 2.3 | 8.2 | 1.9 | 0.6 | 9.9 | 3.7 | 2.9 |
5 | 24.7 | 10.6 | 2.3 | 9.0 | 2.1 | 0.6 | 18.1 | 8.4 | 4.8 |
10 | 34.6 | 11.5 | 2.3 | 24.2 | 1.7 | 0.5 | 29.9 | 11.1 | 5.2 |
30 | 38.4 | 14.4 | 2.2 | 25.1 | 1.9 | 0.5 | 30.0 | 12.1 | 5.2 |
Culture | Acetobacter tropicalis | Digestate Inoculum | |||||||
---|---|---|---|---|---|---|---|---|---|
Temp | 30 °C | 20 °C | 30 °C | ||||||
S/L | 10% | 20% | 30% | 10% | 20% | 30% | 10% | 20% | 30% |
days | pH | ||||||||
1 | 3.2 | 3.6 | 3.4 | 3.5 | 4.5 | 4.9 | 5.1 | 6.8 | 7.0 |
5 | 2.4 | 3.0 | 3.1 | 3.6 | 4.3 | 4.8 | 3.6 | 4.9 | 6.9 |
10 | 2.0 | 3.0 | 3.1 | 3.0 | 4.2 | 4.8 | 3.0 | 4.2 | 5.6 |
30 | 1.9 | 2.9 | 3.1 | 2.6 | 4.2 | 4.8 | 2.7 | 4.0 | 5.4 |
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Kiskira, K.; Lymperopoulou, T.; Tsakanika, L.-A.; Pavlopoulos, C.; Papadopoulou, K.; Ochsenkühn, K.-M.; Lyberatos, G.; Ochsenkühn-Petropoulou, M. Study of Microbial Cultures for the Bioleaching of Scandium from Alumina Industry By-Products. Metals 2021, 11, 951. https://doi.org/10.3390/met11060951
Kiskira K, Lymperopoulou T, Tsakanika L-A, Pavlopoulos C, Papadopoulou K, Ochsenkühn K-M, Lyberatos G, Ochsenkühn-Petropoulou M. Study of Microbial Cultures for the Bioleaching of Scandium from Alumina Industry By-Products. Metals. 2021; 11(6):951. https://doi.org/10.3390/met11060951
Chicago/Turabian StyleKiskira, Kyriaki, Theopisti Lymperopoulou, Lamprini-Areti Tsakanika, Charalampos Pavlopoulos, Konstantina Papadopoulou, Klaus-Michael Ochsenkühn, Gerasimos Lyberatos, and Maria Ochsenkühn-Petropoulou. 2021. "Study of Microbial Cultures for the Bioleaching of Scandium from Alumina Industry By-Products" Metals 11, no. 6: 951. https://doi.org/10.3390/met11060951