Extraction of ammonium nickel sulfate hexahydrate by hydrometallurgical process from the hyperaccumulating plant Odontarrhena muralis – case study from Serbia
Phytomining is a new promising technique that is based on using hyperaccumulating plants which biomass is utilized as a bio-ore for metal extraction. The Ni-hyperaccumulating species Odontarrhena muralis is widely distributed on ultramafic soils in Serbia, and could be a promising candid...
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| Autores principales: | , , , , , , |
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| Formato: | article |
| Lenguaje: | EN SR |
| Publicado: |
Association of Chemical Engineers of Serbia
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/2c3cdd4a83f7435981062b87a6198134 |
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| Sumario: | Phytomining is a new promising technique that is based on using
hyperaccumulating plants which biomass is utilized as a bio-ore for metal
extraction. The Ni-hyperaccumulating species Odontarrhena muralis is widely
distributed on ultramafic soils in Serbia, and could be a promising
candidate for Ni agromining. In the present study, efficiency of a
hydrometallurgical process for Ni recovery using biomass of O. muralis wild
population through the synthesis of Ni salts from plant ash in the form of
ammonium nickel sulfate hexahydrate, Ni(NH4)2(SO4)2 6H2O – (ANSH) was
assessed. The average Ni content in the plant from ultramafic sites in West
Serbia was up to 3.300 g kg-1. The mass yield of ANSH crystals from the
crude ash was ~12 % with the average purity of 73 % were obtained. By
optimizing the purification process before precipitation of ANSH crystals,
it is possible to obtain salt crystals of higher purity, which increases the
economic profitability of this process. The results of this preliminary
study on wild population of O. muralis show the increased potential for
implementation of phytomining practices as an alternative way of Ni
extraction on ultramafic sites in Serbia. |
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