title: Preparation of zeolite nanorods by corona discharge plasma for degradation of phenazopyridine by heterogeneous sono-Fenton-like process.
abstract: The plasma-modified clinoptilolite (PMC) nanorods were prepared from natural clinoptilolite (NC) utilizing environmentally-friendly corona discharge plasma. The PMC and NC were characterized by XRD, FT-IR, SEM, EDX, XPS and BET, which confirmed the nanocatalyst formation. The catalytic performance of the PMC in the heterogeneous sono-Fenton-like process was greater than the NC for treatment of phenazopyridine (PhP). The desired amounts were obtained for experimental parameters including initial pH (5), PMC dosage (2g/L), K2S2O8 concentration (2mmol/L), ultrasonic power (300W) and PhP concentration (10mg/L). Reactive oxygen species scavengers decreased the removal efficiency of the PhP. The treatment process followed pseudo-first order kinetic and seven degradation intermediates were identified by the GC-MS technique.
authors.affiliation: Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran. Electronic address: a_khataee@tabrizu.ac.ir.
authors.forename: Alireza
authors.initials: A
authors.lastname: Khataee
authors.affiliation: Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran.
authors.forename: Tannaz Sadeghi
authors.initials: TS
authors.lastname: Rad
authors.affiliation: Department of Chemical Engineering, Tabriz Branch, Islamic Azad University, 51579-44533 Tabriz, Iran.
authors.forename: Behrouz
authors.initials: B
authors.lastname: Vahid
authors.affiliation: Research Institute for Applied Physics and Astronomy, University of Tabriz, 51666-16471 Tabriz, Iran.
authors.forename: Sirous
authors.initials: S
authors.lastname: Khorram
keywords: Corona discharge plasma; Nanorod; Natural clinoptilolite; Phenazopyridine; Sono-Fenton