Degradation of pollutants in water by Fenton-like oxidation over LaFe-catalysts: Optimization by experimental design

Assila, Ouissal; Barros, Óscar; Fonseca, António M.F.; Parpot, Píer; Soares, O.S.G.P.; Pereira, M.F.R.; Zerrouq, Farid; Kherbeche, Abdelhak; Rombi, Elisabetta; Tavares, Teresa; Neves, Isabel C.

doi:10.1016/j.micromeso.2022.112422

Cited by 11 publications

(9 citation statements)

References 51 publications

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“…The heterogeneous clay catalysts were prepared by addition of zinc or copper using an adapted method described in (Assila et al, 2023). In order to study the effect of the presence of the metal in the clay, aqueous solutions (250 mL) containing the same metal amounts (2.70x10 -2 mmol of Cu or Zn) were mixed with 4 g of the pristine support (Clay MA ) at pH 4.0.…”

Section: Preparation and Characterization Of The Heterogeneous Clay C...mentioning

confidence: 99%

“…For the degradation of Tar or Caf with the different heterogeneous clay catalysts, the concentration of pollutant (30 ppm), temperature (40 ºC), and pH (=3.0) were fixed at the best values found in a preliminary study in a stirred semi-batch reactor at atmospheric pressure using Clay MA as catalyst (Assila et al, 2023). Prior to experiments, all catalysts were pretreated at 100 °C for 2 h in an oven.…”

Section: Fenton-type Oxidationmentioning

confidence: 99%

“…Clays modified electrodes (CME) were prepared using Clay F and Clay O by the procedure already described in previous papers (Assila et al, 2023;Ferreira et al, 2018).…”

Section: Electro Fenton-type Oxidationmentioning

confidence: 99%

“…Moroccan raw clays were utilized as heterogeneous catalysts to eliminate pollutants from effluents in order to tackle the issue of clean water through the valorization of raw materials via the oxidation Fenton reaction. Morocco is a country with important deposits of clays and these geological materials are very attractive to apply as adsorbents (Bencheqroun et al, 2019a) or heterogeneous catalysts for Fenton-type oxidation (Assila et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

“…Clays are a group of minerals used as raw materials in the ceramic, paper, and metal industries, in the field of pet feeding, and as adsorbents, discoloration agents, ion exchangers, supports, and catalysts. These minerals are phyllosilicates with basic building blocks of Si(O, OH) 4 tetrahedra and M(O, OH) 6 octahedra, and mostly M = Al 3+ , Mg 2+ or Fe 2+,3+ (Assila et al, 2023;Bencheqroun et al, 2019a;Schoonheydt, 1991).…”

Section: Introductionmentioning

confidence: 99%

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Raw clays from Morocco for degradation of pollutants by Fenton-like reaction for water treatment

Assila,

Bencheqroun,

Rombi

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Preparation and Characterization Of The Heterogeneous Clay C...mentioning

confidence: 99%

Section: Fenton-type Oxidationmentioning

confidence: 99%

“…Clays modified electrodes (CME) were prepared using Clay F and Clay O by the procedure already described in previous papers (Assila et al, 2023;Ferreira et al, 2018).…”

Section: Electro Fenton-type Oxidationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Raw clays from Morocco for degradation of pollutants by Fenton-like reaction for water treatment

Assila,

Bencheqroun,

Rombi

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Integration of Design of Experiments, Analysis of Variance and Response Surface Methodology in Assessing Heterogeneous Catalysts Processes: A Minireview

Aristizábal‐Alzate,

Castillejos‐López,

Dongil

et al. 2024

ChemistryOpen

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This work reviews the application of Analysis of Variance (ANOVA), Design of Experiments (DOE), and Response Surface Methodology (RSM) in heterogeneous catalysis, based on an analysis of recent scientific literature. Heterogeneous catalysis plays a key role in various industries, guiding chemical reactions, optimizing the performance of different processes and/or prioritizing products, and ANOVA, DOE and RSM are valuable tools to understand the intricate relationships between catalyst properties, process variables and reaction responses. This understanding facilitates improvements in catalysts performance and selectivity, thereby optimizing processes. Drawing insights from recent studies, this minireview highlights the different applications of ANOVA‐based experimental designs and RSM optimization techniques in catalytic process evaluation. Therefore, this review provides valuable insights into these current statistical methodologies applied to heterogeneous catalysis research, informing the relevance and future directions of the research in the field.

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Enhancing H2O2 utilization efficiency for catalytic wet peroxide oxidation through the doping of La in the Fe-ZSM-5 Catalyst

Piao,

Sun,

et al. 2023

Environ Sci Pollut Res

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Iron-supported zeolite has shown great potential as an e cient catalyst for degrading organic pollutants with high concentrations in the catalytic wet peroxide oxidation (CWPO) process under mild conditions. Here 0.4 wt.% La was added in the 1.0 wt.% Fe-ZSM-5 by two-step impregnation method for an enhanced H 2 O 2 utilization e ciency. For a systematical comparison, the CWPO process under 55°C, where m-cresol with a high concentration of 1000 mg/L as a substrate, was studied over Fe-ZSM-5 and Fe-La-ZSM-5 catalysts. Compared with Fe-ZSM-5, Fe-La-ZSM-5 showed 15% higher H 2 O 2 utilization e ciency with comparable TOC removal at around 40%, meanwhile with a 15% reduced metal leaching. Transmission electron microscopy (TEM) with EDS mapping, surface acidity analysis by Fourier Transform InfraRed (FT-IR) and NH 3 -Temperature Programmed Desorption (NH 3 -TPD), redox property analysis by Raman spectroscopy and H 2 -Temperature Programmed Reduction (H 2 -TPR) of both catalysts revealed, a altered surface acidity, a more uniform and evenly dispersed surface Fe species with a promoted reducibility, which effectively prevented the ineffective decomposition of H 2 O 2 , enhanced the H 2 O 2 utilization e ciency, and increased the catalyst stability. Also, more than 90% conversion of 1000 mg/L m-cresol for more than 10 consecutive test days under 55°C without pH adjustment showed a promising possibility of the Fe-La-ZSM-5 for a practical wastewater treatment process.

show abstract

Degradation of pollutants in water by Fenton-like oxidation over LaFe-catalysts: Optimization by experimental design

Cited by 11 publications

References 51 publications

Raw clays from Morocco for degradation of pollutants by Fenton-like reaction for water treatment

Raw clays from Morocco for degradation of pollutants by Fenton-like reaction for water treatment

Integration of Design of Experiments, Analysis of Variance and Response Surface Methodology in Assessing Heterogeneous Catalysts Processes: A Minireview

Enhancing H2O2 utilization efficiency for catalytic wet peroxide oxidation through the doping of La in the Fe-ZSM-5 Catalyst

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