Author, as appears in the article.: Tran, TV; Alsaiari, M; Harraz, FA; Nabgan, W; Nguyen, DTD; Nguyen, CV
Department: Enginyeria Química
URV's Author/s: Nabgan, Walid
Keywords: Zno particles Wastewater treatment Taguchi design Photocatalytic degradation Chrysanthemum spp. flower extract
Abstract: The pollution of synthetic dyes in wastewater exerts many negative impacts on the environment and human health. There is an increasing demand for the degradation of dyes, with an emphasis on photocatalysis. Here, we investigated the bio-mediated synthesis of ZnO using Chrysanthemum spp. flower extract and its utilization for the removal of methylene blue dye under sunlight irradiation. The bandgap energy of green ZnO nanoparticles was determined to be 3.0. The Taguchi L9 (34) orthogonal array design was applied to optimize the photocatalytic degradation of methylene blue dye by green ZnO particles. Four parameters, including the initial concentration (10–50 mg/L), ZnO dosage (0.33–1.0 mg), contact time (30–120 min), and pH (4–10) of the solution, were surveyed based on the Taguchi design. We found that the test result (99.0%) at 10 mg/L was almost equivalent to the predicted value (99.5%) of degradation efficiency. The reaction mechanisms shed light on the major role of reactive oxygen species (•O2−, •OH). More importantly, the green ZnO particles could be reused for at least five cycles and demonstrated high stability.
Thematic Areas: Water science and technology Water resources Interdisciplinar Geography, planning and development Geografía Geociências Fluid flow and transfer processes Environmental sciences Engenharias iii Engenharias i Ciencias sociales Ciências ambientais Ciências agrárias i Biochemistry Aquatic science
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: walid.nabgan@urv.cat
Author identifier: 0000-0001-9901-862X
Record's date: 2024-08-03
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.mdpi.com/2073-4441/15/12/2186
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Water. 15 (12):
APA: Tran, TV; Alsaiari, M; Harraz, FA; Nabgan, W; Nguyen, DTD; Nguyen, CV (2023). Taguchi L9 (34) Orthogonal Array Design for Photocatalytic Degradation of Methylene Blue Dye by Green ZnO Particles Biosynthesized by Chrysanthemum spp. Flower Extract. Water, 15(12), -. DOI: 10.3390/w15122186
Article's DOI: 10.3390/w15122186
Entity: Universitat Rovira i Virgili
Journal publication year: 2023
Publication Type: Journal Publications