Degradation of 2, 4-Dinitrophenol using persulfate activated by Cu2+ in photocatalytic system (UV/SPS/Cu2+) from aqueous solution: optimisation and operational parameters. Issue 3 (19th February 2022)

• Record Type: Journal Article
• Authors: Pasalari, Hasan; Esrafili, Ali; Yegane Badi, Mojtaba; Farzadkia, Mahdi
• Is Part Of: International journal of environmental analytical chemistry. Volume 102:Issue 3(2022)
• Page Start: 804
• Page End: 819
• Publication Date: 2022-02-19
• Subjects: 24-Dinitrophenol -- advanced oxidation process (AOP) -- sulphate radicals -- RSM -- water matrix; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2020.1726339
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: The present study was developed to model and optimise 2, 4-Dinitrophenol (2, 4-DNP) degradation from aqueous solution using UVC/SPS/Cu 2+ system based on the response surface methodology (RSM) and Box-Behenken (BBD) approach. A high removal efficiency (92.75%) and total organic carbon (TOC) reduction (61.5%) were obtained under optimum conditions, i.e. (Time = 59 min, SPS Con. = 58.74 mg/L, Cu 2+ Con = 14.12 mg/L, pH = 11, Initial Con = 6 mg/L). Quenching experiments confirmed that sulphate radicals were predominant radical species for 2-4-DNP degradation. The effect of CO3 − on 2, 4-DNP degradation was more complicated than other aquatic background anions. Finally, the performance of UVC/SPS/Cu 2+ system for 2, 4-DNP treatment in different aquatic solutions: tap water, surface runoff, treated and raw wastewater were found to be 89.76%, 81.65%, 51.22% and 75.94%, respectively.