Effect of Ferric Ions on Bioleaching of Pentlandite Concentrate

Autor:	Lai Huimin, Qian Li, Tao Jiang, Yaping Zhang, Yongbin Yang, Bin Xu
Rok vydání:	2016
Předmět:	Sulfobacillus thermosulfidooxidans Chemistry Pentlandite chemistry.chemical_element engineering.material Phosphate Ion chemistry.chemical_compound Nickel Bioleaching medicine engineering Ferric Sulfate medicine.drug Nuclear chemistry
Zdroj:	Characterization of Minerals, Metals, and Materials 2016 ISBN: 9783319486239 Characterization of Minerals, Metals, and Materials 2016
Popis:	The intensified effects of ferric phosphate and ferric sulfate as nutrient and oxidant on the bioleaching of pentlandite concentrate with Acidithiobacillus ferrooxidans and Sulfobacillus thermosulfidooxidans were studied. The results showed that the nickel leaching rate was enhanced continuously with FePO4 or Fe2(SO4)3 added in certain extent, but declined at excess. For A. ferrooxidans, the optimum additive amount of Fe2(SO4)3 was 6.63mM/L and the nickel leaching rate reached 71.76%. Compared with Fe2(SO4)3, the optimum additive amount of FePO4 was 26.52mM/L for both strains. For A. ferrooxidans and S. thermosulfidooxidans, the nickel leaching rate could increase to 98.06% and 98.11% which was 1.83 times and 1.55 times of the leachig rate of blank test, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f35f94060432c1f7665546c210716db https://doi.org/10.1002/9781119263722.ch42 Zobrazit plný text záznamu