Removal of sodium isopropyl xanthate by capacitive deionization process

Year 2025, Volume: 8 Issue: 1, 65 - 72, 31.03.2025

Yasemin Öztürk

https://doi.org/10.35208/ert.1477303

Abstract

This study investigated the removal of sodium isopropyl xanthate (SIPX) by capacitive deionization using an ion exchange resin/PVDF electrode. The electrode was prepared by coating a layer of ion exchange resin (Amberlite FPA54) and polyvinylidene fluoride (PVDF) on the carbon electrode.
Batch experiments demonstrated that 96% of SIPX was removed through electrosorption and electrochemical advanced oxidation processes at 1 V. Carbon disulfide (CS2) was generated as a by-product of the xanthate oxidation.
Adsorption/desorption cycle tests revealed that the ion exchange resin/PVDF electrode has high adsorption capacity, and the maximum adsorption could not be achieved within 60 min of adsorption times. The total xanthate removed in the final adsorption stage of eight cycles was 323 mg/m2, corresponding to 34.1% of xanthate from a 20 mg/L xanthate solution that flowed 0.4 mL per min at 1 V for 60 min of adsorption. At the end of the 30 min. desorption, 32.1% of the adsorbed xanthate was released back into the solution and oxidized to CS2, which was adsorbed by the electrodes in the following adsorption stage. The percentage of the concentrate flow at the end of the desorption stage was 33%.
The findings of the study suggest that CDI is a promising tool for the mining industry. However, further research is needed to evaluate its efficiency for specific mining applications.

Keywords

Capacitive Deionization (CDI), Electrochemical Advanced Oxidation Processes (EAOPs), Flotation, Residual Xanthate, Water Treatment

References

• S. Meißner, “The impact of metal mining on global water stress and regional carrying capacities—a gis-based water impact assessment,” Resources, Vol. 10, Article 120, 2021. [CrossRef]
• K. A. Slatter, N. D. Plint, M. Cole, V. Dilsook, D. De Vaux, N. Palm, and B. Oostendorp, “Water management in Anglo Platinum process operations: effects of water quality on process operations,” in: Proceedings of the International Mine Water Conference. Pretoria, South Africa; 46–55, 2009.
• K. Witecki, I. Polowczyk, P. B. Kowalczuk, “Chemistry of wastewater circuits in mineral processing industry—A review,” Journal of Water Process Engineering, Vol. 45, Article 102509, 2022. [CrossRef]
• S. R. Rao, and J. A. Finch, “A review of water re-use in flotation,” Minerals Engineering, Vol. 2, pp. 65–85, 1989. [CrossRef]
• M. A. Elizondo-Álvarez, A. Uribe-Salas, and S. Bello-Teodoro, “Chemical stability of xanthates, dithiophosphinates and hydroxamic acids in aqueous solutions and their environmental implications,” Ecotoxicology and Environmental Safety, Vol. 207, Article 111509, 2021. [CrossRef]
• R. Liu, W. Sun, K. Ouyang, L. Zhang, and Y. Hu Y. “Decomposition of sodium butyl xanthate (SBX) in aqueous solution by means of OCF: Ozonator combined with flotator,” Minerals Engineering, Vol. 70, pp. 222–227, 2015. [CrossRef]
• B. García-Leiva, L. A. C. Teixeira, and M. L. Torem, “Degradation of xanthate in waters by hydrogen peroxide, fenton and simulated solar photo-fenton processes,” Journal of Materials Research and Technology, Vol. 8(6), pp. 5698–5706, 2019. [CrossRef]
• S. Chen, W. Gong, G. Mei, Q. Zhou, C. Bai, and N. Xu, “Primary biodegradation of sulfide mineral flotation collectors,” Minerals Engineering, Vol. 24, pp. 953–955, 2011. [CrossRef]
• R. Rezaei, M. Massinaei, and A. Z. Moghaddam, “Removal of the residual xanthate from flotation plant tailings using modified bentonite,” Minerals Engineering, Vol. 119, pp. 1–10, 2018. [CrossRef]
• Q. Huang, X. Li, S. Rena, and W. Luo, “Removal of ethyl, isobutyl, and isoamyl xanthates using cationic gemini surfactant modified montmorillonites,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 580, Article 123723, 2019. [CrossRef]
• Y. Ozturk, O. Bicak, and Z. Ekmekci, “Effects of residual xanthate on flotation efficiency of a cu-zn sulfide ore,” Minerals, Vol. 12, Article 279, 2022. [CrossRef]
• Y. Ozturk, “Electrochemical advanced oxidation for removal of xanthate from flotation process water,” Minerals Engineering, Vol. 202, Article 108308, 2023.
• S. Porada, R. Zhao, A. Van der Wal, V. Presser, and P. M. Biesheuvel, “Review on the science and technology of water desalination by capacitive deionization,” Progress in Materials Science, Vol. 58, pp. 1388–1442, 2013. [CrossRef]
• Y. Oren, “Capacitive deionization (CDI) for desalination and water treatment — past, present and future (a review),” Desalination, Vol. 228, pp. 10–29, 2008.
• S. Y. Pan, A. Z. Haddad, A. Kumar, and S. W. Wang, “Brackish water desalination using reverse osmosis and capacitive deionization at the water energy nexus,” Water Research, Vol. 183, Article 116064, 2020. [CrossRef]
• M. Tauk, G. Folaranmi, M. Cretin, M. Bechelany, P. Sistat, C. Zhang, and F. Zaviska, “Recent advances in capacitive deionization: A comprehensive review on electrode materials.,” Journal of Environmental Chemical Engineering, Vol. 11(6), Article 111368, 2023. [CrossRef]
• J. B. Lee, K. K. Parka, S. W. Yoona, P. Y. Parka, K. Parka, and C. W. Lee, “Desalination performance of a carbon-based composite electrode, Desalination, Vol. 237, pp. 155–161, 2019. [CrossRef]
• K. Zuo, J. Kim, A. Jain, T. Wang, R. Verduzco, M. Long, and Q. Li, “Novel composite electrodes for selective removal of sulfate by the capacitive deionization process,” Environmental Science and Technology, Vol. 52, pp. 9486–9494, 2018. [CrossRef]
• L. M. Chang, X. Y. Duan, and W. Liu, “Preparation and electrosorption desalination performance of activated carbon electrode with titania,” Desalination, Vol. 270, pp. 285–290, 2011. [CrossRef]
• H. Li, L. Pan, C. Nie, Y. Liu, and Z. Sun, “Reduced graphene oxide and activated carbon composites for capacitive deionization,” Journal of Material Chemistry, Vol. 22, Article 15556, 2012. [CrossRef]
• H. İ. Uzun, and E. Debik, “Economic evaluation of fluoride removal by membrane capacitive deionization,” Environmental Research and Technology, Vol. 4(4), 352–357, 2021. [CrossRef]
• EPİAŞ Şeffaflık Platformu, https://seffaflik.epias.com.tr/electricity/electricity-markets/day-ahead-market-dam/market-clearing-price-mcp Accessed on Jul 26, 2024
• J. Xie, C. Zhang, and T. D. Waite, “Hydroxyl radicals in anodic oxidation systems: generation, identification and quantification,” Water Research, Vol. 217, Article 118425, 2022. [CrossRef]
• Z. Sun, and W. Forsling, “The degradation kinetics of ethyl-xanthate as a function of pH in aqueous solution,” Minerals Engineering, Vol. 10(4), pp. 389–400, 1997. [CrossRef]
• B. K. Körbahti, and M. C. Erdem, “Ph change in electrochemical oxidation of imidacloprid pesticide using boron-doped diamond electrodes,” Turkish Journal of Engineering, Vol. 1(1), pp. 32–36, 2017. [CrossRef]