Methylene Blue removal using polyamide-vermiculite nanocomposites: Kinetics, equilibrium and thermodynamic study

Basaleh, Abdullah A.; Al-Malack, Muhammad H.; Saleh, Tawfik A.

doi:10.1016/j.jece.2019.103107

Cited by 108 publications

(30 citation statements)

References 59 publications

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“…Competition of Na + ions with dye and surfactant cations was also investigated to provide information about their adsorption behavior in saline water [36]. Among a huge number of recent papers, in Table 3, several methylene blue adsorption capacities are summarized onto various kinds of natural and modified minerals [38][39][40][41][42][43]. Table 2.…”

Section: Discussionmentioning

confidence: 99%

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Methylene Blue Adsorption Study on Microcline Particles in the Function of Particle Size Range and Temperature

2019

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In this paper, the adsorption process of methylene blue has been investigated on microcline particles as a function of particle size and temperature. The characterization of microcline in the particle size ranges of 1−71 μm and 71−315 μm gained by sieving was proved using X-ray diffraction (XRD) and scanning electron microscopy combined with energy-dispersive detector (SEM-EDS) in powder form, over laser diffraction measurements in aqueous suspension. The optimum dosage of adsorbent was 13.5 g/L in dye adsorption and the adsorption isotherms on both microcline size fractions were determined at this adsorbent concentration. The maximum adsorption capacities were in the range of 1.5–3.1 mg g−1 on microcline particles with supplementing evaluation of isotherms using the Langmuir model. Considering the problems of linearization of equations, the non-linear least-squares estimation can be strongly recommended for modeling adsorption-equilibrium. The adsorption isotherm determined at elevated temperature of 60−65 °C represents a breakpoint at around 20 mg L−1 of equilibrated dye concentration due to performing of a potential process of dye self-association. According to our experiments, the increase in temperature has an adverse effect on adsorption.

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Section: Discussionmentioning

confidence: 99%

“…Table 3. Several methylene blue adsorption capacities onto various kinds of natural and modified minerals [38][39][40][41][42][43]. As written above, the authors used the linearization of adsorption isotherm equations for estimation of Langmuir constants.…”

Section: Discussionmentioning

confidence: 99%

Methylene Blue Adsorption Study on Microcline Particles in the Function of Particle Size Range and Temperature

2019

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“…Thus, the experimental kinetic data for the adsorption of MB can be more likely described by the pseudo-second-order model in which the efficiency of the adsorption of MB strongly depends on the number of available active sites of the CMC-Alg/GO adsorbent. 31 Furthermore, the intraparticle diffusion model was also used to identify if the mechanism of intraparticle diffusion is the rate limiting step in the overall adsorption of MB onto CMC-Alg/GO, as expressed in eqn (7). 32…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Response surface methodology for optimization of methylene blue adsorption onto carboxymethyl cellulose-based hydrogel beads: adsorption kinetics, isotherm, thermodynamics and reusability studies

et al. 2019

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“… 8 Therefore, the discharge of effluent-containing traces of MB dye must be treated to avoid all the dangers it poses. 9 …”

Section: Introductionmentioning

confidence: 99%

Sawdust-Based Cellulose Nanocrystals Incorporated with ZnO Nanoparticles as Efficient Adsorption Media in the Removal of Methylene Blue Dye

et al. 2020

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The continuous increase in the wastes generated from forestry, timber, and paper industries has engendered the need for their transformation into economically viable materials for the benefit of mankind. This study reports the preparation and application of sawdust-derived cellulose nanocrystals (CNC) incorporated with zinc oxide as a novel adsorbent for the removal of methylene blue (MB) from water. The CNC/ZnO nanocomposite was characterized using Fourier transform infrared, X-ray diffraction (XRD), and scanning electron microscopy. The amount of MB adsorbed was determined by a UV–vis spectrophotometer. The microscopic analysis revealed that the nanocomposite had a narrow particle size range and exhibited both spherical and rod-like morphologies. The XRD analysis of the nanocomposite showed characteristic high-intensity peaks in the range of 30–75° attributed to the presence of ZnO nanoparticles, which were responsible for the enhancement of the crystallinity of the nanocomposite. The results revealed a relationship between the MB removal efficiency and changes in solution pH, nanocomposite dosage, initial concentration, temperature, and reaction time. The adsorption equilibrium isotherm, measured in the temperature range of 25–45 °C and using a concentration of 20–100 mg/L, showed that the MB sorption followed the Langmuir isotherm with a maximum adsorption capacity of 64.93 mg/g. A pseudo-second-order kinetic model gave the best fit to the experimental data. Based on adsorption performance, the CNC/ZnO nanocomposite offers prospects for further research and application in amelioration of dye-containing effluent.

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Methylene Blue removal using polyamide-vermiculite nanocomposites: Kinetics, equilibrium and thermodynamic study

Cited by 108 publications

References 59 publications

Methylene Blue Adsorption Study on Microcline Particles in the Function of Particle Size Range and Temperature

Methylene Blue Adsorption Study on Microcline Particles in the Function of Particle Size Range and Temperature

Response surface methodology for optimization of methylene blue adsorption onto carboxymethyl cellulose-based hydrogel beads: adsorption kinetics, isotherm, thermodynamics and reusability studies

Sawdust-Based Cellulose Nanocrystals Incorporated with ZnO Nanoparticles as Efficient Adsorption Media in the Removal of Methylene Blue Dye

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