Iprodione removal by uv-light-, zero-valent iron-and zero-valent aluminium-activated persulfate oxidation processes in pure water and simulated tertiary treated urban wastewater

Bahareh Montazeri, Olga Koba-Ucun, Idil Arslan-Alaton*, Tugba Olmez-Hanci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The degradation of iprodione (IPR), a once frequently used but recently banned dicarboximide fungicide, by UV-C light-, zero-valent iron-(ZVI), and zero-valent aluminium (ZVA)-activated persulfate (PS) oxidation processes was comparatively studied in distilled (pure) water (DW) and simulated, tertiary treated urban wastewater (SWW). The performance of PS-activated oxidation processes was examined by following IPR (2–10 mg/L) removal, PS (0.01–1.00 mM) consumption, metal ion release (for the two heterogeneous catalytic oxidation processes), dissolved organic carbon (DOC) removal as well as hydroxylated aromatic and low molecular weight aliphatic degradation products. The effect of pH and PS concentrations on IPR removal was examined in DW. While the experiments in DW highlighted the superior performance of UV-C/PS treatment (with 78% DOC removal after 120 min at pH = 6.2), the performance of UV-C/PS treatment decreased sharply (to 24% DOC removal after 120 min at pH = 6.8) in the complex wastewater matrix (in SWW). Complete IPR (in 20 min) and 40% DOC (in 120 min) removals were obtained with ZVI/PS treatment (1 g/L ZVI, 1.5 mM PS, pH = 3.0), which was the most effective oxidation process in SWW. The treatment performance was strongly influenced by the SWW constituents, and UV-C/PS treatment appeared to be the most sensitive to it.

Original languageEnglish
Article number1679
JournalWater (Switzerland)
Volume13
Issue number12
DOIs
Publication statusPublished - 2 Jun 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Funding

This research was funded by the Istanbul Technical University under Grant Nr. MDK-201942052.

FundersFunder number
Istanbul Teknik ÜniversitesiMDK-201942052

    Keywords

    • Iprodione removal
    • Performance in simulated urban wastewater
    • UV-C-activated persulfate
    • Zero-valent aluminium-activated persulfate
    • Zero-valent iron-activated persulfate

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