Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution
A novel method for the recovery of sodium from alumina-extracted fly ash (AEFA) using concentrated Na2CO3 solution is presented. Sodium was efficiently extracted from AEFA, which was mainly composed of NaCaHSiO4. The factors influencing the process were systematically investigated, and the optimal c...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2018-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391800010W.pdf |
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| _version_ | 1832572701713104896 |
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| author | Wang Z. Zheng S. Ma S. Ding J. Wang X. |
| author_facet | Wang Z. Zheng S. Ma S. Ding J. Wang X. |
| author_sort | Wang Z. |
| collection | DOAJ |
| description | A novel method for the recovery of sodium from alumina-extracted fly ash (AEFA) using concentrated Na2CO3 solution is presented. Sodium was efficiently extracted from AEFA, which was mainly composed of NaCaHSiO4. The factors influencing the process were systematically investigated, and the optimal conditions were determined to be: reaction temperature = 180°C, Na2CO3 concentration = 170 g/L, liquid-to-solid ratio = 10 mL/g, and reaction time = 2 h. Under optimal conditions, a low Na2O content of 1.02 wt% of the products, with Na2O extraction rate of 93.79% was achieved. The results indicated that this process was more effective than the recovery of sodium from AEFA using a dilute NaOH solution. Furthermore, this process avoided the production of a dilute NaOH solution, therefore lowering the energy consumption during the concentration and recycling of sodium, when compared with the NaOH-based route. Therefore, the recovery of sodium from AEFA using concentrated Na2CO3 solution is more suitable for use in industrial applications. |
| format | Article |
| id | doaj-art-99beca703c6d4f99b1dd456e10ddc029 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-99beca703c6d4f99b1dd456e10ddc0292025-02-02T08:28:53ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752018-01-0154222523210.2298/JMMB180309010W1450-53391800010WRecovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solutionWang Z.0Zheng S.1Ma S.2Ding J.3Wang X.4National Engineering Laboratory for Hydrometallurgy Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, PR China + University of Chinese Academy of ScienceInstitute of Process Engineering, Chinese Academy of Sciences, Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgy Cleaner Production Technology, Beijing, PR ChinaInstitute of Process Engineering, Chinese Academy of Sciences, Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgy Cleaner Production Technology, Beijing, PR ChinaInstitute of Process Engineering, Chinese Academy of Sciences, Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgy Cleaner Production Technology, Beijing, PR ChinaInstitute of Process Engineering, Chinese Academy of Sciences, Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgy Cleaner Production Technology, Beijing, PR ChinaA novel method for the recovery of sodium from alumina-extracted fly ash (AEFA) using concentrated Na2CO3 solution is presented. Sodium was efficiently extracted from AEFA, which was mainly composed of NaCaHSiO4. The factors influencing the process were systematically investigated, and the optimal conditions were determined to be: reaction temperature = 180°C, Na2CO3 concentration = 170 g/L, liquid-to-solid ratio = 10 mL/g, and reaction time = 2 h. Under optimal conditions, a low Na2O content of 1.02 wt% of the products, with Na2O extraction rate of 93.79% was achieved. The results indicated that this process was more effective than the recovery of sodium from AEFA using a dilute NaOH solution. Furthermore, this process avoided the production of a dilute NaOH solution, therefore lowering the energy consumption during the concentration and recycling of sodium, when compared with the NaOH-based route. Therefore, the recovery of sodium from AEFA using concentrated Na2CO3 solution is more suitable for use in industrial applications.http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391800010W.pdfFly ashNaCaHSiO4Sodium carbonateSodium extraction |
| spellingShingle | Wang Z. Zheng S. Ma S. Ding J. Wang X. Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution Journal of Mining and Metallurgy. Section B: Metallurgy Fly ash NaCaHSiO4 Sodium carbonate Sodium extraction |
| title | Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution |
| title_full | Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution |
| title_fullStr | Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution |
| title_full_unstemmed | Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution |
| title_short | Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution |
| title_sort | recovery of sodium from alumina extracted fly ash using concentrated sodium carbonate solution |
| topic | Fly ash NaCaHSiO4 Sodium carbonate Sodium extraction |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391800010W.pdf |
| work_keys_str_mv | AT wangz recoveryofsodiumfromaluminaextractedflyashusingconcentratedsodiumcarbonatesolution AT zhengs recoveryofsodiumfromaluminaextractedflyashusingconcentratedsodiumcarbonatesolution AT mas recoveryofsodiumfromaluminaextractedflyashusingconcentratedsodiumcarbonatesolution AT dingj recoveryofsodiumfromaluminaextractedflyashusingconcentratedsodiumcarbonatesolution AT wangx recoveryofsodiumfromaluminaextractedflyashusingconcentratedsodiumcarbonatesolution |