Enhanced solar light photocatalytic performance of Fe-ZnO in the presence of H 2 O 2 , S 2 O 8 2- , and HSO 5 - for degradation of chlorpyrifos from agricultural wastes: Toxicities investigation.

Autor: Shah NS; Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, 61100, Pakistan. Electronic address: samadchemistry@gmail.com., Iqbal J; College of Natural and Health Sciences, Zayed University, P.O. Box 144534, Abu Dhabi, United Arab Emirates., Sayed M; Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, 25120, Pakistan., Ghfar AA; Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia., Khan JA; Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan., Khan ZUH; Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, 61100, Pakistan., Murtaza B; Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, 61100, Pakistan., Boczkaj G; Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, 80-233, Gdansk, G. Narutowicza St. 11/12, Poland; EkoTech Center, Gdansk University of Technology, G. Narutowicza St. 11/12, 80-233, Gdansk, Poland., Jamil F; Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus Raiwind Road, Lahore, 54000, Pakistan.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2022 Jan; Vol. 287 (Pt 4), pp. 132331. Date of Electronic Publication: 2021 Sep 22.
DOI: 10.1016/j.chemosphere.2021.132331
Abstrakt: This study reported Fe doped zinc oxide (Fe-ZnO) synthesis to degrade chlorpyrifos (CPY), a highly toxic organophosphate pesticide and important sources of agricultural wastes. Fourier transform infrared, X-ray diffraction, scanning electron microscope, and energy-dispersive X-ray spectroscopic analyses showed successful formation of the Fe-ZnO with highly crystalline and amorphous nature. Water collected from agricultural wastes were treated with Fe-ZnO and the results showed 67% degradation of CPY by Fe-ZnO versus 39% by ZnO at 140 min treatment time. Detail mechanism involving reactive oxygen species production from solar light activated Fe-ZnO and their role in degradation of CPY was assessed. Use of H 2 O 2 , peroxydisulfate (S 2 O 8 2- ) and peroxymonosulfate (HSO 5 - ) with Fe-ZnO under solar irradiation promoted removal of CPY. The peroxides yielded hydroxyl (OH) and sulfate radical () under solar irradiation mediated by Fe-ZnO. Effects of several parameters including concentration of pollutant and oxidants, pH, co-existing ions, and presence of natural organic matter on CPY degradation were studied. Among peroxides, HSO 5 - revealed to provide better performance. The prepared Fe-ZnO showed high reusability and greater mineralization of CPY. The GC-MS analysis showed degradation of CPY resulted into several transformation products (TPs). Toxicity analysis of CPY as well as its TPs was performed and the formation of non-toxic acetate imply greater capability of the treatment technology.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: