Adsorption of a basic dye from aqueous solutions onto sugar-industry-mud in two modes of operations

Magdy, Yehia H.; Daifullah, A.A.M.

doi:10.1016/s0956-053x(98)00022-1

Cited by 92 publications

(35 citation statements)

References 16 publications

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“…The shape of the Langmuir isotherm can be used to predict whether a sorption system is favourable or unfavourable in a batch adsorption process. The essential features of the isotherm can be expressed in terms of a dimensionless constant, separation factor (R L ) that can be defined by the following relationship (Magdy and Daifullah 1998):…”

Section: Isotherm Study On Fluoride Adsorptionmentioning

confidence: 99%

Optimizing adsorption of fluoride from water by modified banana peel dust using response surface modelling approach

Bhaumik

Mondal

2014

Appl Water Sci

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The present work highlighted the effective application of banana peel dust (BPD) for removal of fluoride (F -) from aqueous solution. The effects of operating parameters such as pH, initial concentration, adsorbent dose, contact time, agitation speed and temperature were analysed using response surface methodology. The significance of independent variables and their interactions were tested by the analysis of variance and t test statistics. Experimental results revealed that BPD has higher Fadsorption capacity (17.43, 26.31 and 39.5 mg/g). Fluoride adsorption kinetics followed pseudo-second-order model with high correlation of coefficient value (0.998). On the other hand, thermodynamic data suggest that adsorption is favoured at lower temperature, exothermic in nature and enthalpy driven. The adsorbents were characterised through scanning electron microscope, Fourier transform infrared spectroscopy and point of zero charges (pH ZPC ) ranges from pH 6.2-8.2. Finally, error analysis clearly demonstrates that all three adsorbents are well fitted with Langmuir isotherm compared to the other isotherm models. The reusable properties of the material support further development for commercial application purpose.

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Section: Isotherm Study On Fluoride Adsorptionmentioning

confidence: 99%

Optimizing adsorption of fluoride from water by modified banana peel dust using response surface modelling approach

Bhaumik

Mondal

2014

Appl Water Sci

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“…The R L value indicates the shape of the isotherm and hence the type of adsorption: irreversible (R L = 0), favourable (0 < R L < 1), linear (R L = 1) or unfavourable (R L > 1) (Magdya and Daifullah, 1998).…”

Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 99%

Adsorption of remazol brilliant blue on an orange peel adsorbent

Mafra

Igarashi‐Mafra

Zuim

et al. 2013

Braz. J. Chem. Eng.

134

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-A novel orange peel adsorbent developed from an agricultural waste material was characterised and utilised for the removal of Remazol Brilliant Blue from an artificial textile-dye effluent. The adsorption thermodynamics of this dye-adsorbent pair was studied in a series of equilibrium experiments. The time to reach equilibrium was 15 h for the concentration range of 30 mg L -1 to 250 mg L -1 . The adsorption capacity decreased with increasing temperature, from 9.7 mg L -1 at 20 °C to 5.0 mg L -1 at 60 °C. Both the Langmuir and Freundlich isotherm models fitted the adsorption data quite reasonably. The thermodynamic analysis of dye adsorption onto the orange peel adsorbent indicated its endothermic and spontaneous nature. Thus, the application of orange peel adsorbent for the removal of dye from a synthetic textile effluent was successfully demonstrated.

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“…Analytical calculation of the adsorbent solution ratio for a given change in solution concentration from C 0 to C e is obtained using the Equation (16). A series of plots obtained from the Equation (16) for the adsorption of MB on the high lime fly ash was represented in Figure 8.…”

Section: Single-stage Batch Adsorbermentioning

confidence: 99%

“…A series of plots obtained from the Equation (16) for the adsorption of MB on the high lime fly ash was represented in Figure 8. An initial MB concentration of 100 mg=L is assumed and the figure shows the amount of effluent which can be treated to reduce the MB content by 90%, 80%, 70%, 60%, and 50% using various mass of the high lime fly ash.…”

Section: Single-stage Batch Adsorbermentioning

confidence: 99%

“…[10,11] Activated carbon has excellent adsorption capacity for dyes but its uses remains limited, because of high cost. Therefore, many investigators have studied to use lower-cost and readily available adsorbents to remove dyes from aqueous solutions such as activated bleaching earth, perlite, seashells, rosewood sawdust, sugar industry pulp, sugar cane dust, tree-fern, peat moss, and natural sediment, [12][13][14][15][16][17][18][19][20] as alternatives to activated carbon.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Methylene Blue from Aqueous Solution on High Lime Fly Ash: Kinetic, Equilibrium, and Thermodynamic Studies

Keleşoğlu

Kes

Sütçü

et al. 2012

Journal of Dispersion Science and Technology

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Kinetic, equilibrium, and thermodynamic studies were performed for the batch adsorption of methylene blue (MB) on the high lime fly ash as a low cost adsorbent material. The studied operating variables were adsorbent amount, contact time, dye concentration, and temperature. The kinetic data were analyzed using the pseudo-first order and pseudo-second order kinetic models and the adsorption kinetic was followed well by the pseudo-second order kinetic model. The equilibrium data were fitted with the Freundlich, Langmuir, and Dubinin Radushkevich (D-R) isotherms and the equilibrium data were found to be well represented by the Freundlich and D-R isotherms. Based on these two isotherms MB is taken by chemical ion exchange and active sites on the high lime fly ash have different affinities to MB molecules. Various thermodynamic parameters such as enthalpy of adsorption (DH ), free energy change (DG ), and entropy change (DS ) were investigated. The positive value of DH and negative value of DG indicate that the adsorption is endothermic and spontaneous. The positive value of DS shows the increased randomness at the solid-liquid interface during the adsorption. A single-stage batch adsorber was also designed based on the Freundlich isotherm for the removal of MB by the high lime fly ash.

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Adsorption of a basic dye from aqueous solutions onto sugar-industry-mud in two modes of operations

Cited by 92 publications

References 16 publications

Optimizing adsorption of fluoride from water by modified banana peel dust using response surface modelling approach

Optimizing adsorption of fluoride from water by modified banana peel dust using response surface modelling approach

Adsorption of remazol brilliant blue on an orange peel adsorbent

Adsorption of Methylene Blue from Aqueous Solution on High Lime Fly Ash: Kinetic, Equilibrium, and Thermodynamic Studies

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