Optimization of iron-ZIF-8 catalysts for degradation of tartrazine in water by Fenton-like reaction

被引：8

作者：

Assila O. ^{[1
]}

Vilaça N. ^{[1
,2
]}

Bertão A.R. ^{[1
,2
,3
,4
]}

Fonseca A.M. ^{[1
,5
]}

Parpot P. ^{[1
,5
]}

Soares O.S.G.P. ^{[6
,7
]}

Pereira M.F.R. ^{[6
,7
]}

Baltazar F. ^{[3
,4
]}

Bañobre-López M. ^{[2
]}

Neves I.C. ^{[1
,5
]}

机构：

[1] Centre of Chemistry, Chemistry Department, University of Minho, CQUM, Campus de Gualtar, Braga

[2] INL – Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, Braga

[3] Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, Braga

[4] ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães

[5] CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga

[6] LSRE-LCM - Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto

[7] ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto

来源：

Chemosphere | 2023年 / 339卷

关键词：

Fenton-like reaction; FeZIF-8; nanoparticles; Germination rate; Mineralization; Pollutant effluents;

D O I：

10.1016/j.chemosphere.2023.139634

中图分类号：

学科分类号：

摘要：

Optimization of iron zeolitic imidazole framework-8 (FeZIF-8) nanoparticles, as heterogeneous catalysts, were synthesized and evaluated by the Fenton-like reaction for to degrade tartrazine (Tar) in aqueous environment. To achieve this, ZIF-8 nanoparticles were modified with different iron species (Fe2+ or Fe3O4), and subsequently assessed through the Fenton-like oxidation. The effect of different parameters such as the concentration of hydrogen peroxide, the mass of catalyst and the contact time of reaction on the degradation of Tar by Fenton-like oxidation was studied by using the Box-Behnken design (BBD). The BBD model indicated that the optimum catalytic conditions for Fenton-like reaction with an initial pollutant concentration of 30 ppm at pH 3.0 were T = 40 °C and 12 mM of H2O2, 2 g/L of catalyst and 4 h of reaction. The maximum Tar conversion value achieved with the best catalyst, Fe1ZIF-8, was 66.5% with high mineralization (in terms of decrease of total organic carbon – TOC), 44.2%. To assess phytotoxicity, the germination success of corn kernels was used as an indicator in the laboratory. The results show that the catalytic oxidation by Fenton-like reaction using heterogeneous iron ZIF-8 catalysts is a viable alternative for treating contaminated effluents with organic pollutants and highlighted the importance of the validation of the optimized experimental conditions by mathematical models. © 2023 The Authors

引用

共 27 条

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