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Synthesis and Surface Modification of Small Pore Size Zeolite W for Improving Removal Efficiency of Anionic Contaminants from Water

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Abstract

The presence of regulated inorganic contaminants in water such as AsO43− and PO43− anions, is becoming a relevant environmental research topic. The harm that these anions cause to human health and the ecosystem have been reported in several works. The adsorption processes using low-cost materials, such as zeolites, have proven to be an option to removal hazardous contaminants from water. The coal fly ash, a waste from thermoelectrical plants, offers a raw pollutant material to synthesis an effective adsorbent (Zeolite W). In this research was studied the removal of arsenic and phosphates anions from water, applying a functionalized by iron and zirconium Zeolite W, which was modified using a fast and efficient process through microwave-assisted method (1 min at 150°C). The obtained Zeolite W did not show significant changes in its structure and morphology. The maximum adsorption capacity (Qm expressed in mg g−1) was found to be 42.31 (Iron-zirconium-zeolite) and 27.82 (Iron-zeolite) for AsO43−, while it reached 50.89 for PO43− using Zirconium-zeolite. Results showed that functionalized zeolites are efficient adsorbents for hazardous anionic species; therefore, it could be useful for aqueous effluents remediation.

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Acknowledgements

This research was possible due to financial support of CONACyT, Mexico and FONCyT-Coahuila, Mexico through the projects number PDCPN-247660 and COAH-2019-C13-C034, respectively.

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Correspondence to Germán Giácoman-Vallejos.

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Abdellaoui, Y., Gamero-Melo, P., Díaz-Jiménez, L. et al. Synthesis and Surface Modification of Small Pore Size Zeolite W for Improving Removal Efficiency of Anionic Contaminants from Water. Bull Environ Contam Toxicol 105, 934–940 (2020). https://doi.org/10.1007/s00128-020-03036-z

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  • DOI: https://doi.org/10.1007/s00128-020-03036-z

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