Pyrite nanoparticles derived from mine waste as efficient catalyst for the activation of persulfates for degradation of tetracycline

Journal article (2021)

Authors

Farzaneh Rahimi Shahroud University of Medical Sciences
J.P. van der Hoek Sanitary Engineering - CEG
Sebastien Royer Université de Lille
Allahbakhsh Javid Shahroud University of Medical Sciences
Ali Mashayekh-Salehi Shahroud University of Medical Sciences
Moslem Jafari Sani Shahroud University of Medical Sciences
Research Group
Sanitary Engineering (CEG) (TU Delft)
Copyright: © 2021 Farzaneh Rahimi, J.P. van der Hoek, Sebastien Royer, Allahbakhsh Javid, Ali Mashayekh-Salehi, Moslem Jafari Sani
DOI: https://doi.org/10.1016/j.jwpe.2020.101808
Emerging contaminants Tetracycline In-vivo toxicity Peroxymonosulfate Sulfate radicals
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Published Date

2021

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Water Management

Research Group

Sanitary Engineering

Abstract

Pyrite mine waste was used as a non-toxic and natural catalyst for the activation of peroxydisulfate (PDS) and peroxymonosulfate (PMS) to oxidize tetracycline (TTC), one of the most extensively used antibiotics worldwide, in contaminated water. The results demonstrated that PMS was activated more effectively than PDS by using pyrite. Scavenging experiments indicated that both OH[rad] and SO4[rad]− were the main oxidative species in the pyrite/PMS process, while SO4[rad]− was more dominant. A high degradation of 98.3 % and significant mineralization (up to 46 %) of TTC (50 mg/L) were achieved using pyrite activated PMS at a reaction time of 30 and 60 min, respectively. In-vivo toxicity of raw and pyrite/PMS treated TTC solutions was evaluated using biochemical and histopathological assays. The results revealed that the pyrite/PMS process significantly decreased the nephrotoxicity (90 %) and hepatotoxicity (85 %) effect of TTC. Catalyst reusability was evaluated under cycling conditions. No significant decrease in process efficiency was measured between the first and fourth cycle (<3% decrease in TTC removal). In conclusion, mine waste pyrite nanoparticles can be considered as a non-toxic and clean catalyst to activate PMS for an effective detoxification, degradation, and intermediate mineralization of TTC, as a refractory water pollutant.