Runtti, H., Luukkonen, T., Tuomikoski, S. et al. Removal of antimony from model solutions, mine effluent, and textile industry wastewater with Mg-rich mineral adsorbents. Environ Sci Pollut Res (2022). https://doi.org/10.1007/s11356-022-23076-8
Removal of antimony from model solutions, mine effluent, and textile industry wastewater with Mg-rich mineral adsorbents
|Author:||Runtti, Hanna1; Luukkonen, Tero2; Tuomikoski, Sari1;|
1Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014, Oulu, Finland
2Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 8000, FI-90014, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 1.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2022092760236
|Publish Date:|| 2022-09-27
Naturally occurring layered double hydroxide mineral, brucite (BRU), was compared with hydromagnesite (HYD) and a commercial Mg-rich mineral adsorbent (trade name AQM PalPower M10) to remove antimony (Sb) from synthetic and real wastewaters. The BRU and HYD samples were calcined prior to the experiments. The adsorbents were characterized using X-ray diffraction, X-ray fluorescence, and Fourier transform infrared spectroscopy. Batch adsorption experiments were performed to evaluate the effect of initial pH, Sb concentration, adsorbent dosage, and contact time on Sb removal from synthetic wastewater, mine effluent, and textile industry wastewater. Several isotherm models were applied to describe the experimental results. The Sips model provided the best correlation for the BRU and M10. As for the HYD, three models (Langmuir, Sips, and Redlich–Peterson) fit well to the experimental results. The results showed that the adsorption process in all cases followed the pseudo-second-order kinetics. Overall, the most efficient adsorbent was the BRU, which demonstrated slightly higher experimental maximum adsorption capacity (27.6 mg g-1) than the HYD (27.0 mg g-1) or M10 (21.3 mg g-1) in the batch experiments. Furthermore, the BRU demonstrated also an efficient performance in the continuous removal of Sb from mine effluent in the column mode. Regeneration of adsorbents was found to be more effective under acidic conditions than under alkaline conditions.
Environmental science and pollution research
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
116 Chemical sciences
215 Chemical engineering
218 Environmental engineering
Open Access funding provided by University of Oulu including Oulu University Hospital. This study was supported financially by WaterPro (ERDF Project No. A74635, funded by the Central Ostrobothnia Regional Council, the European Union, the European Regional Development Fund, and the Leverage from the EU), as well as by Maa- ja vesitekniikan tuki ry. and The Academy of Finland (Grant No. 315103 and No. 326291).
|Academy of Finland Grant Number:||
315103 (Academy of Finland Funding decision)
326291 (Academy of Finland Funding decision)
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