Application of fluidized bed reactor containing GOx/MnFe2O4/calcium alginate nano-composite in degradation of a model pollutant

Zolfaghari, Pezhman; Shojaat, Rahim; Karimi, Afzal; Saadatjoo, Naghi

doi:10.1016/j.jece.2018.09.033

Cited by 12 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The asprepared materials were used to photocatalyst applications with degradation of methylene blue under visible light irradiation. [34] In addition, other magnetic nanocomposites have been reported such as Ag 3 PO 4 / MnFe 2 O 4, [35] C 3 N 4 @MnFe 2 O 4 -graphene, [36] MoS 2 / MnFe 2 O 4, [37] GO x /MnFe 2 O 4 /Calcium alginate [38] and CuFe 2 O 4 /RGO. [39] Due to electrostatic and magnetic attractions, magnetic nanoparticles can be easily accumulated and produce clusters.…”

mentioning

confidence: 99%

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Shirzadi‐Ahodashti

Ebrahimzadeh

Ghoreishi

et al. 2020

Applied Organom Chemis

View full text Add to dashboard Cite

The purpose of this research is to prepare novel, inexpensive, eco‐friendly and efficient magnetic nanocomposites for degradation of pollutant from wastewater and their potential antibacterial activity. To reach this goal, we have synthesized magnetic MnFe2O4@SiO2@Au (MnFe@Si@Au) nanocomposites through ultrasound assisted co‐precipitation technique in presence of carbohydrate and Crataegus fruits extract, for the first time. The influence of capping agents including sucrose, glucose, PVA and reducing agents such as C. microphylla and C. pentagyna on the morphology, size, purity, photocatalytic and antibacterial behavior of magnetic nanocomposites were investigated. The FT‐IR, XRD, VSM, EDS, FE‐SEM, TEM and BET analysis were performed to confirm the formation of magnetic nanocomposites. MnFe@Si@Au nanocomposites have shown promising potential in degradation of organic contaminants including rhodamine b (RhB), 2‐naphthol (2‐NPH), methyl violet (MV), erythrosine (ER) and eriochrome black T (EBT) under both radiation conditions. The results show that degradation of the anionic contaminants is more than cationic contaminants under UV and visible irradiations. As well as, these synthesized spherical MnFe@Si@Au nanocomposites show excellent antibacterial activities against P. aeruginosa, K. pneumoniae and P. mirabilis bacteria. In addition to the features mentioned, another prominent feature of this nanocatalyst is retaining their photocatalytic activity after five cycles of utilization.

show abstract

mentioning

confidence: 99%

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Shirzadi‐Ahodashti

Ebrahimzadeh

Ghoreishi

et al. 2020

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…of 0.000, which demonstrates that both models were significant. On the other hand, F-values of lack of fit were calculated as 3.35 and 1.32 for RB and AR14, respectively, which in conjunction with relatively high probability values of 0.105 and 0.383, proves the insignificancy of lack of fit [38].…”

Section: Rsm Modelingmentioning

confidence: 91%

Modeling and optimization of simultaneous degradation of rhodamine B and acid red 14 binary solution by homogeneous Fenton reaction: a chemometrics approach

Aliasgharlou¹,

Bahram²,

Zolfaghari³

et al. 2020

Turk J Chem

Self Cite

View full text Add to dashboard Cite

This study aimed to propose a mathematical method to investigate and optimize the simultaneous elimination process of multiple organic pollutants using the Fenton process. Hence, the treatment of rhodamine B (RB) and acid red 14 (AR14) dyes in their binary solution was studied. Multivariate curve resolution alternating least square (MCR-ALS), a novel chemometric method, was applied along with correlation constraints to resolute the UV-Vis spectrophotometric data, enabling quantification of investigated dyes despite a high spectral overlapping. Response surface methodology was adopted to assess the model and optimize individual and interactive effects of three independent factors (Fe 2+ , H 2 O 2 and initial pH) on the simultaneous elimination of RB and AR14. The values of the regression coefficient for RB and AR14 were determined as 98.48 and 98.67 percent, respectively, revealing the reliability of the obtained polynomial models to predict decolorization efficiencies. Desirability function was employed to optimize the independent variables to attain the highest possible degradation performance for both dyes in their binary solution. At the optimum point of operation ([Fe 2+ ] = 143.88 mg/L, [H 2 O 2 ] = 126.89 mg/L and pH = 3.71), degradation efficiencies of RB and AR14 were found as 81.58% and 80.22%, respectively, which were nearly identical to the experimental results.

show abstract

“…About 1–20% of total annually produced synthetic dyes are released into the effluents of the textile, paper, pharmaceutical, food, and plastic industries [1,2]. This causes considerable environmental pollution via production of hazardous byproducts through hydrolysis, oxidation and other chemical reactions [1,3,4].…”

Section: Introductionmentioning

confidence: 99%

Modification of Immobilized Titanium Dioxide Nanostructures by Argon Plasma for Photocatalytic Removal of Organic Dyes

et al. 2019

Self Cite

View full text Add to dashboard Cite

The aim of this study was to modify surface properties of immobilized rutile TiO2 using Argon cold plasma treatment and to evaluate the performance of the catalyst in photocatalytic elimination of synthetic dyes in UV/TiO2/H2O2 process. The surface-modified TiO2 was characterized by XRD, EDX, SEM, UV-DRS and XPS analyses. Response surface methodology was adopted to achieve high catalyst efficiency by evaluating the effect of two main independent cold plasma treatment parameters (exposure time and pressure) on surface modification of the catalyst. The increase of the plasma operation pressure led to higher decolorization percentage, while the increase of plasma exposure time decreased the decolorization efficiency. RSM methodology predicted optimum plasma treatment conditions to be 0.78 Torr and 21 min of exposure time, which resulted in decolorization of 10 mg/L solution of the malachite green solution by 94.94% in 30 min. The plasma treatment decreased the oxygen to titanium ratio and caused oxygen vacancy on the surface of the catalyst, resulting in the superior performance of the plasma-treated catalyst. Pseudo first-order kinetic rate constant for the plasma-treated catalyst was 4.28 and 2.03 times higher than the rate constant for the non-treated photocatalyst in decolorization of aqueous solutions of malachite green and crystal violet, respectively.

show abstract

Application of fluidized bed reactor containing GOx/MnFe2O4/calcium alginate nano-composite in degradation of a model pollutant

Cited by 12 publications

References 27 publications

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Modeling and optimization of simultaneous degradation of rhodamine B and acid red 14 binary solution by homogeneous Fenton reaction: a chemometrics approach

Modification of Immobilized Titanium Dioxide Nanostructures by Argon Plasma for Photocatalytic Removal of Organic Dyes

Contact Info

Product

Resources

About

Application of fluidized bed reactor containing GOx/MnFe2O4/calcium alginate nano-composite in degradation of a model pollutant

Cited by 12 publications

References 27 publications

Facile and eco‐benign synthesis of a novel MnFe2O4@SiO2@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Facile and eco‐benign synthesis of a novel MnFe2O4@SiO2@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Modeling and optimization of simultaneous degradation of rhodamine B and acid red 14 binary solution by homogeneous Fenton reaction: a chemometrics approach

Modification of Immobilized Titanium Dioxide Nanostructures by Argon Plasma for Photocatalytic Removal of Organic Dyes

Contact Info

Product

Resources

About

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations