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Perovskite-type titanate zirconate as photocatalyst for textile wastewater treatment

  • Environmental Photocatalysis and Photochemistry for a Sustainable World: A Big Challenge
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Abstract

Calcium titanate zirconate, Ca(Ti(1-x)Zrx)O3 (CZT), powders have been synthesised by the polymeric precursor method. The structural analysis of the CZT powders was monitored by X-ray diffraction (XRD), photoacoustic spectroscopy (PAS) and textural analysis. The photocatalytic properties were evaluated by methylene blue (MB) decomposition and real textile wastewater (RTW) combined treatment (coagulation/flocculation/photocatalysis). Chemical oxygen demand (COD) of RTW was successfully reduced from 6195 mg L−1 (untreated) to 662 mg L−1 after coagulation/flocculation with a tannin-based coagulant (Tanfloc®) and finally to 471 mg L−1 after combined treatment (coagulation/flocculation/photocatalysis) applying ultraviolet radiation and CaTiO3 as photocatalyst.

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Acknowledgments

The authors would like to thank the Brazilian agency CNPq (459057/2014-6) for the financial support.

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Correspondence to A. M. Ferrari-Lima.

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Responsible editor: Suresh Pillai

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Ferrari-Lima, A.M., Ueda, A.C., Bergamo, E.A. et al. Perovskite-type titanate zirconate as photocatalyst for textile wastewater treatment. Environ Sci Pollut Res 24, 12529–12537 (2017). https://doi.org/10.1007/s11356-016-7590-4

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  • DOI: https://doi.org/10.1007/s11356-016-7590-4

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