Sorption equilibrium and kinetics of basic dye from aqueous solution using banana stalk waste

Hameed, B.H.; Mahmoud, Dalia Khalid; Ahmad, A.L.

doi:10.1016/j.jhazmat.2008.01.098

Cited by 183 publications

(87 citation statements)

References 30 publications

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“…Similar results have also been reported for the adsorption kinetics of acid orange 10 onto organobentonite, 7 for the adsorption kinetics of direct blue and reactive blue onto lingnocellulose-based waste biopolymer, 8 and for the kinetics of MB adsorption onto perlite 12 and banana stalk waste. 25 On the other hand, if the correlation coefficients estimated from the plots of the intraparticle diffusion kinetics are more than 0.90, the regression may be regarded as linear. 25 Herein, in the case of the adsorption process with a correlation coefficient higher than 0.90 for the intraparticle diffusion kinetics of MB adsorption onto CS, CW, and CD, it may be concluded that the intraparticle diffusion rate is one of the rate limiting steps as well as the pseudo-second order kinetic model (see Tables 1-9).…”

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confidence: 99%

“…25 On the other hand, if the correlation coefficients estimated from the plots of the intraparticle diffusion kinetics are more than 0.90, the regression may be regarded as linear. 25 Herein, in the case of the adsorption process with a correlation coefficient higher than 0.90 for the intraparticle diffusion kinetics of MB adsorption onto CS, CW, and CD, it may be concluded that the intraparticle diffusion rate is one of the rate limiting steps as well as the pseudo-second order kinetic model (see Tables 1-9). Similar results have been observed in a study on batch kinetic adsorption of MB onto perlite 12 and in another study on the kinetics of MB adsorption onto banana stalk waste.…”

mentioning

confidence: 99%

“…Similar results have been observed in a study on batch kinetic adsorption of MB onto perlite 12 and in another study on the kinetics of MB adsorption onto banana stalk waste. 25 If intraparticle diffusion is one of the rate-controlling steps, the adsorption is also governed by low activation energy. This situation is clarified by analyzing the activation energy of adsorption below.…”

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confidence: 99%

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Investigation of the adsorption kinetics of methylene blue onto cotton wastes

Acemioğlu¹,

Ertaş²,

Alma³

et al. 2014

Turk J Chem

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Abstract:Cotton stalk (CS), cotton waste (CW), and cotton dust (CD), which are cotton wastes, were used as adsorbents to study the adsorption kinetics of methylene blue from aqueous solution. Kinetics of the batch adsorption experiment was investigated according to the pseudo-first order, the pseudo-second order, and the intraparticle diffusion models used commonly in the literature. The effects of the initial concentration, solution pH, and temperature on kinetic parameters (adsorption rate constant, initial adsorption rate, equilibrium adsorption capacity, etc.) were studied. The results showed that the adsorption process was well fitted to the pseudo-second order model for all adsorbents. The activation energy (E a) of the adsorption process was determined by using the pseudo-second-order rate constants by means of Arrhenius' equation. The values of E a were estimated as 7.05, 10.89, and 35.72 kJ mol −1 for CS, CW, and CD, respectively. From the results, it was understood that the adsorption process was controlled by an intraparticle diffusion mechanism as well as both an activated process and a physical adsorption process.

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Investigation of the adsorption kinetics of methylene blue onto cotton wastes

Acemioğlu¹,

Ertaş²,

Alma³

et al. 2014

Turk J Chem

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“…The Freundlich isotherm model is based on the assumption that adsorption occurs on the heterogeneous adsorption surface having unequally available sites with different energies of adsorption [9]. The Freundlich isotherms model had the following form:…”

Section: Freundlich Modelmentioning

confidence: 99%

A Comparative Study on Equilibrium Adsorption of Dyes on Adsorbents Prepared from Coastal Plant,C. equisetifoliaSeeds via Green Modification and Activated Carbon

Jaafar

Awang

Zuki

et al. 2016

MATEC Web of Conferences

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Abstract. Eco-friendly adsorbents were prepared from coastal plant, C. equisetifolia seeds treated with β-cyclodextrin (Rhusorbent) for the removal of dyes. The study was carried out to determine the effectiveness of Rhusorbent to remove common dyes such as malachite green (MG) and neutral red (NR) dyes from aqueous solutions in batch experiments. The commercial activated carbon (AC) was also used in this equilibrium absorption study which includes the effect of adsorbent dosage, initial dye concentration and contact time. The percentage of MG dye removal of about 92.4% and 88.4% was achieved for both Rhusorbent and AC respectively at concentration of 60mg/L and 0.4g absorbent. The equilibrium adsorption of about 91.1% and 79.1% was achieved for both Rhusorbent and AC respectively involving NR dye. The scanning electron micrographs of Rhusorbent show uneven and rough surface prompting evidence for the effective adsorption of MG and NR dyes on the surface of adsorbents. For both adsorption studies, Langmuir and Freundlich isotherm models fitted well the adsorption data involving both Rhusorbent and AC. C. equisetifolia seeds are a potential source for bio-inspired adsorbents for the removal of MG and NR dyes.

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“…where is the amount of dye adsorbed (mg·g ) is the rate of intraparticle diffusion controlled sorption constant, and is the intercept [36].…”

Section: Biosorption Kineticsmentioning

confidence: 99%

Kinetic Modeling of Methylene Blue and Crystal Violet Dyes Adsorption on Alginate-Fixed Water Hyacinth in Single and Binary Systems

Mahamadi¹,

Mawere²

2013

AJAC

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Removal of Methylene Blue (MB) and Crystal Violet (CV) dyes from monocomponent and binary aqueous solutions by water hyacinth-E. Crassipes roots fixed on alginate (a low-cost adsorbent) has been investigated. The extent of adsorption was evaluated as a function of solution pH, initial dye concentration, and bead biomass loading. Kinetic sorption data were analysed by widely used models: pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models. The results showed that pseudo-second-order model better described the biosorption experimental data than the pseudo-first-order kinetic model for both dyes, whilst the Elovich model fitted the biosorption experimental data at lower dye concentrations. The intraparticle diffusion model indicated that sorption of CV and MB was characterized by rapid surface adsorption coupled with slow film diffusion process at higher initial dye concentration and at all initial bead biomass loading. The range of mean free energy values confirmed physical adsorption as the mechanism for dye removal from solution.

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Sorption equilibrium and kinetics of basic dye from aqueous solution using banana stalk waste

Cited by 183 publications

References 30 publications

Investigation of the adsorption kinetics of methylene blue onto cotton wastes

Investigation of the adsorption kinetics of methylene blue onto cotton wastes

A Comparative Study on Equilibrium Adsorption of Dyes on Adsorbents Prepared from Coastal Plant,C. equisetifoliaSeeds via Green Modification and Activated Carbon

Kinetic Modeling of Methylene Blue and Crystal Violet Dyes Adsorption on Alginate-Fixed Water Hyacinth in Single and Binary Systems

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