Abstract
Batch adsorption experiments and column adsorption experiments were conducted using gel-based 201 × 7 resin to investigate the selective removal of \({{\text{MoO}}}_{4}^{2-}\) from sodium-tungstate-molybdenum aqueous. The results of the batch adsorption experiments demonstrated that gel-based 201 × 7 resin has selective removal of W and Mo. The pH value of the mixed sodium-tungstate-molybdenum aqueous (containing 9.11 g/L of Mo and 112.9 g/L of W) was adjusted to 7 by H2WO4. And W was existed as polymerised ions while Mo was existed as monodentate ions. In addition, the use of H2WO4 as an acidification agent and an alternative resource for tungsten presents high potential for industrial applications. Column adsorption experiments further demonstrated that the ratio of molybdenum removal reached 91.29% for three consecutive cycles with the pH value to 7 by H2WO4, and the separation between W and Mo was more effective. Thus, this method could be highly efficient for separating W and Mo in sodium-tungstate-molybdenum aqueous and presents better industrial prospects.
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Acknowledgements
This research was financially supported by National Natural Science Foundation of China (No. 51974372; No. 52174339).
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This research was financially supported by National Natural Science Foundation of China (No. 52174339, No. 52374363 and No. 51974372).
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JZ: Data curation, Methodology, Writing—original draft. YQ and ZW: Investigation. XC: Conceptualization, Resources, Writing—review & editing. AC: Writing—review & editing. XL: Writing—review & editing., JL: Writing—review & editing. LH: Writing—review & editing. FS: Conceptualization, Validation. ZZ: Funding acquisition, Writing – review & editing.
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Zhu, J., Qiu, Y., Wang, Z. et al. Molybdenum Separation from Sodium-Tungstate-Molybdenum Aqueous Solutions Using an Anionic Gel-Based 201 × 7 Resin. J. Sustain. Metall. 10, 184–194 (2024). https://doi.org/10.1007/s40831-024-00786-6
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DOI: https://doi.org/10.1007/s40831-024-00786-6