Methylene blue adsorption using chabazite: Kinetics and equilibrium modelling

Solisio, Carlo; Aliakbarian, Bahar

doi:10.1002/cjce.22838

Cited by 17 publications

(6 citation statements)

References 38 publications

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“…Engineers also characterize polymer impregnation, measure the size distribution of emulsions, release rates control of organic compounds, and encapsulation and release rates of antibiotics . UV‐vis spectroscopy is a powerful tool to calculate the reaction rates . Coupled with HPLC and mass spectrometry, it monitors several wavelengths concurrently .…”

Section: Applicationsmentioning

confidence: 99%

Experimental methods in chemical engineering: Ultraviolet visible spectroscopy—UV‐Vis

et al. 2018

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UV-vis spectroscopy is an inexpensive, simple, flexible, non-destructive, analytical method appropriate for a wide class of organic compounds and some inorganic species. UV-vis spectrophotometers measure the absorbance or transmittance of light passing through a medium as a function of the wavelength. Chemical engineers apply it for quantitative analysis, to derive liquid phase reaction kinetics, and to identify the mechanism at the molecular scale. High performance liquid chromatography and ultra-high performance liquid chromatography integrate UV-vis detectors to identify and quantify the concentration of compounds in liquid streams. Combining these techniques with mass spectrometry facilitates identifying all species. UV-vis diffuse reflectance spectroscopy is a variant with enhanced scattering properties that measures the properties of solids and powders. A bibliometric analysis of the 10 000 most cited papers referring to UV-vis (2016 and 2017) groups research in four major clusters: nanoparticles and nanostucutres; photocatalysis and water treatment; crystals, complexes, and derivatives; and Ag and Au nanoparticles biological interaction.

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Section: Applicationsmentioning

confidence: 99%

Experimental methods in chemical engineering: Ultraviolet visible spectroscopy—UV‐Vis

et al. 2018

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“…Therefore, chemical adsorption is a process-limiting step which is suggested to evaluate the reaction speed of this model. In studies conducted in 2017, various researchers reported similar results [62,63].…”

Section: Adsorption Kinetics Modelsmentioning

confidence: 74%

ZnFe2O4@SiO2@Tragacanth gum nanocomposite: synthesis and its application for the removal of methylene blue dye from aqueous solution

2019

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In this study, the ZnFe 2 O 4 @SiO2@Tragacanth gum magnetic nanocomposite as a novel adsorbent was synthesized and was confirmed by FTIR, XRD, TEM, TGA and VSM methods. Then, the prepared nanocomposite has been tested for the removal of methylene blue dye from aqueous solution for adsorption process, and the effect of various parameters including pH (2-12), adsorbent dosage (0.2-2 g/L), temperature (15-45 °C), initial dye concentration (10-60 mg/L) and contact time (5-120 min), also its isotherms and kinetics has been studied. The results showed that the optimum pH, contact time, initial dye concentration, adsorbent dosage and maximum adsorption capacity were 8, 60 min, 60 mg/L, 0.2 g/L and 109.37 mg/g, respectively. Furthermore, the experimental data determined that the adsorption of methylene blue dye interpreted the Freundlich isotherm (R 2 = 0.979) and the pseudosecond-order kinetics model (R 2 = 0.998). Also, the thermodynamic parameters of the absorption system, such as changes in enthalpy (ΔH = + 9.36 kJ/mol), entropy (ΔS = + 40.72 J/mol k) and Gibbs free energy (ΔG = − 3.5 kJ/mol), were measured and showed that adsorption process of ZnFe 2 O 4 @SiO2@Tragacanth gum magnetic nanocomposite was endothermic and spontaneous process. As a result, due to high adsorption capacity, environment friendly, low cost, rapid extraction and non-toxicity, the ZnFe 2 O 4 @SiO2@TG magnetic nanocomposite can be used as an effective adsorbent for methylene blue removal from aqueous solutions.

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“…On the other hand, magnetic nanoparticles have challenges that prevent applications such as rapid aggregation, oxidation, etc. (Solisio & Aliakbarian 2017).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of N_doped FeNi3/TiO2 nano-photocatalyst in advanced oxidation process to remove reactive red 195 dye from aqueous medium

Sahebdadzehi

Khodadadi

Dorri

2022

Preprint

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Dyes are one of the most dangerous chemical compounds in industrial wastewater, including textile wastewater. Reactive dyes have many applications in the textile industry. Nevertheless, due to the high solubility and stability of these dyes in water, the discharge of wastewater containing these dyes to receiving waters prevents the transmission of sunlight to aquatic environments and disrupts biological processes. The aim of this study was to synthesize N_doped FeNi3/TiO2 nano-photocatalyst and to investigate the removal efficiency of reactive red 195 dye from aqueous medium. In this study, the effect of important variables was investigated including initial concentration including pH (3-11), contact time (5 - 200 minutes), dye concentration (5 - 40 mg l-1), and nanocomposite dose (1 - 6 g l-1), in removal of reactive red 195 dye. The characteristics of the synthesized nanocomposites were also studied using BET, FTIR, FESEM, and VSM techniques. The results of this study revealed that increasing the contact time and decreasing the dye concentration enhanced the adsorption efficiency. The highest percentage of RR 195 dye adsorption was 82% after 90 minutes at the adsorbent concentration of 4 g l-1, pH=3 and the initial concentration of RR 195 of 5 mg l-1. Detection techniques also confirmed the synthesis of good quality synthesized nanocomposites. According to the results, the advanced oxidation process of N-doped FeNi3/Tio2 nano-photocatalyst had a high efficiency removal of reactive red 195 dye adsorption from aqueous medium. As a result, this method can be used effectively in the treatment of colored wastewater.

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Methylene blue adsorption using chabazite: Kinetics and equilibrium modelling

Cited by 17 publications

References 38 publications

Experimental methods in chemical engineering: Ultraviolet visible spectroscopy—UV‐Vis

Experimental methods in chemical engineering: Ultraviolet visible spectroscopy—UV‐Vis

ZnFe2O4@SiO2@Tragacanth gum nanocomposite: synthesis and its application for the removal of methylene blue dye from aqueous solution

Synthesis and application of N_doped FeNi3/TiO2 nano-photocatalyst in advanced oxidation process to remove reactive red 195 dye from aqueous medium

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