Development of methylene blue removal methodology by adsorption using molecular polyoxometalate: Kinetics, Thermodynamics and Mechanistic Study

Sabarinathan, C.; Karuppasamy, P.; Vijayakumar, Chinnaswamy Thangavel; Arumuganathan, T.

doi:10.1016/j.microc.2019.01.015

Cited by 57 publications

(16 citation statements)

References 75 publications

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“…Previously, Sabarinathan et al [56] reported that the R 2 value of Ho model of the MB adsorption onto polyoxometalate decreased from 0.8979 to 0.5905 with the increase of C0 from 140 to 300 mg/L. Almeida et al [57] reported the decreasing of Ho's R 2 value in MB adsorption on montmorillonite clay from 1.0000 to 0.9951 when the C0 varied from 200 to 1000 mg/L.…”

Section: The Dependency Of Kinetic Parameters As a Function Of Initial Solute Concentrationmentioning

confidence: 99%

The Dependency of Kinetic Parameters as a Function of Initial Solute Concentration: New Insight from Adsorption of Dye and Heavy Metals onto Humic-Like Modified Adsorbents

Rahmat

Rusdiarso

Santosa

et al. 2021

Bull. Chem. React. Eng. Catal.

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Kinetics parameters are the essential issue in the design of water treatment systems for pollutants uptake. Though numerous studies have identified the boundary conditions that exert influence on the kinetics parameters, the influence of the dynamic initial solute concentration (C0) to the kinetic parameters generated from fitting kinetics model to experimental data has not been investigated thoroughly. This study revealed a change in the kinetics parameter value due to changes in the adsorption mechanism as an effect of dynamic C0. It was observed that at higher C0 the adsorbed solute at equilibrium (qe) increases and it takes longer time to reach equilibrium. As a result, the kinetics rate constant (k) calculated from adsorption reaction model (Lagergren, Ho, Santosa, and RBS) was decreased. In general, Ho model exhibit higher correlation coefficient value (R2) among the other model at low C0. At high C0, Ho’s R2 tend to decrease while the Lagergren and RBS’s R2 was increased. The amendment mechanism from external mass transport to intra-particle diffusion as a rate limiting step was evidenced by Boyd and Weber-Morris kinetics model. Further, the physicochemical properties of the adsorbent used in this work: chitin and Fe3O4 modified horse dung humic acid (HDHA-Fe3O4 and HDHA-Ch, respectively) with the solute: Pb(II), Methylene Blue (MB), and Ni(II) was deeply discussed in this paper. The outcomes of this work are of prime significance for effective and optimum design for pollutant uptake by adsorption equipment. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: The Dependency Of Kinetic Parameters As a Function Of Initial Solute Concentrationmentioning

confidence: 99%

The Dependency of Kinetic Parameters as a Function of Initial Solute Concentration: New Insight from Adsorption of Dye and Heavy Metals onto Humic-Like Modified Adsorbents

Rahmat

Rusdiarso

Santosa

et al. 2021

Bull. Chem. React. Eng. Catal.

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“…54,59 For example, AHMT was used as an adsorbent for the removal of MB dye from an aqueous solution which showed an adsorption efficiency of 96% with a maximum adsorption capacity of 877.19 mg g −1 . 54 A high adsorption efficiency of AHMT was ascribed to the strong binding affinities of oxygen-and nitrogen-containing functional groups on the surface of AHMT adsorbent. Figure 2 demonstrates the mechanism of adsorption MB + cation over AHMT anion, at low pH, olation and oxolation processes are responsible for the high negative charge on the AHMT and consequently better adsorption of the cationic and large size MB compared to H + .…”

Section: Synthesis and Assemblymentioning

confidence: 99%

“…Vanadium-substituted POM-ILs have been designed by Mani et al using 1-butyl-3-methylimidazolium bromide, 1-octyl-3-methylimidazolium bromide, and 1-cetyl-3-methylimidazolium bromide with hexapotassium trivanadophosphotungstate. The most commonly used synthetic routes to fabricate water insoluble POMs as adsorbents in water treatment techniques are chemical precipitation, , sol–gel, ultrasonication-assisted, , microwave-irradiated, , hydrothermal or solvothermal, , and ionothermal. , …”

Section: Synthesis and Assemblymentioning

confidence: 99%

Polyoxometalate-Based Materials for the Removal of Contaminants from Wastewater: A Review

D’Cruz

Amin

Al‐Hetlani

2021

Ind. Eng. Chem. Res.

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Water pollution from the continuous disposal of hazardous substances has become a serious issue and a global concern for the environment and public health. Removal of these pollutants from water is an ongoing challenge, and several approaches have been proposed and applied for this purpose. Adsorption is one of the common and most efficient approaches often used because it is simple, quick processing, inexpensive, and eco-friendly. Polyoxometalates (POMs) are a well-known class of metal–oxygen cluster compounds with tunable structure and size and highly electronegative and oxo-enriched surfaces. Owing to their electronic and physical properties, they have attracted considerable attention in the field of pollutants removal from wastewater. This review discusses the advances made over the last 10 years in the removal of toxic pollutants from wastewater using POMs-based materials. Furthermore, we summarize the recent synthetic strategies used to modify POMs-based materials and their applications in adsorption of pollutants. Knowledge gaps and current challenges in this research area are also discussed to support the development prospect of these materials for industrial use.

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“…Investigating the methods to normalize MB concentration in water resources is required as MB causes toxicity in high doses and has a low water degradation rate. [19][20][21] It is noteworthy that MB is also used as a model for organic pollutants.…”

mentioning

confidence: 99%

Magnetic adsorbent based on the electric arc furnace dust for the removal of methylene blue dye from aqueous solution

Shamsi

Mohamadi

Zamani

et al. 2021

Env Prog and Sustain Energy

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There are different solutions to manage industrial sewage, and recently reusing the useful materials in sewage is a trending topic among environmentalists. In this study, electric arc furnace dust (EAFD), a by-product of the steelmaking industry, and finding a way to it reuse will be the main topic of this article. EAFD with 37% iron (Fe) content as the magnetic adsorbents has a good ability to treat contaminated water. The batch method was used to evaluate the effective parameters for removing methylene blue with a magnetic adsorbent, such as the initial concentrations of dye, the pH of the solution, time dependency, and the amount of adsorbent. The results showed that 3 g of the adsorbent could remove 93 ± 1% of the methylene blue from the 100 ml of an aqueous solution with an initial concentration of 5 ppm during 20 min at pH = 6. Kinetic data and the adsorption isotherms were better fitted with the pseudo-second-order model (R 2 = 0.99) and Freundlich models (R 2 = 0.97), respectively, which confirmed the chemisorption. The real sample's recovery results with three replicate confirmed the MB removal was dramatically reduced by more than 80%.

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Development of methylene blue removal methodology by adsorption using molecular polyoxometalate: Kinetics, Thermodynamics and Mechanistic Study

Cited by 57 publications

References 75 publications

The Dependency of Kinetic Parameters as a Function of Initial Solute Concentration: New Insight from Adsorption of Dye and Heavy Metals onto Humic-Like Modified Adsorbents

The Dependency of Kinetic Parameters as a Function of Initial Solute Concentration: New Insight from Adsorption of Dye and Heavy Metals onto Humic-Like Modified Adsorbents

Polyoxometalate-Based Materials for the Removal of Contaminants from Wastewater: A Review

Magnetic adsorbent based on the electric arc furnace dust for the removal of methylene blue dye from aqueous solution

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