Modeling of lead (II) biosorption by residue of allspice in a fixed-bed column

Cruz-Olivares, J.; Pérez‐Alonso, C.; Dı́az, Carlos; Ureña-Núñez, Fernando; Chaparro-Mercado, M.C.; Bilyeu, Bryan

doi:10.1016/j.cej.2013.04.101

Cited by 151 publications

(40 citation statements)

References 34 publications

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“…The total adsorbed MB quantity (q total ) in mg for a given inlet concentration is equal to the flow rate and the area under the plot of the adsorbed MB dye concentration C ads (C ads = C o -C t ), where C o and C t (mg L -1 ) are the influent and effluent dye concentrations, respectively, versus time (min), and is calculated as follows [31]:…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Adsorption performance of continuous fixed bed column for the removal of methylene blue (MB) dye using Eucalyptus sheathiana bark biomass

2015

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In this study, the adsorptive effectiveness of sustainable and cost-effective eucalyptus bark biomass in the removal of methylene blue (MB) dye from its aqueous solution has been tested using a packed bed up-flow column experiment. A series of column experiments using raw eucalyptus bark was performed to determine the breakthrough curves with varying inlet MB dye flow rate (10-15 mL min -1 ), initial MB dye concentration (50-100 mg L -1 ) and adsorbent bed height (10-15 cm). High bed height, low flow rate and high initial dye concentration were found to be the better conditions for maximum dye adsorption. To predict the breakthrough curves and to determine the characteristic parameters of the column dynamics for industrial applications and for process design, Thomas model, Yoon-Nelson model and bed depth service time model were applied to experimental breakthrough data. All models were found suitable for describing the dynamic behaviour of the column, with respect to MB flow rate, initial dye concentration and adsorbent bed height. The findings revealed that eucalyptus bark biomass has a high adsorption potential for the removal of MB dye from aqueous solutions in a column system, and that it could be used to treat dye-containing effluents. List of symbols ACross sectional area of bed in column (cm 2 ) A 1 Used bed area (cm 2 ) A 2 Unused bed area (cm 2 )pollutant concentration (mg/L) C o Inlet pollutant concentration (mg/L) H Height of bed in column (cm) H B Used bed length up to break point (cm) H T Bed height of column (cm) H UNB Unused bed length (cm) K o Rate constant in BDST model (L/mg min) K T Thomas rate constant (mL/mg min) K YN Yoon and Nelson rate constant (min -1 ) MTZ Mass transfer zone (cm) m Amount of adsorbent in the column (g) m p Mass of pine cone (g) m total Total amount of methylene blue dye sent to column (g) N o Adsorption capacity (mg/L) Q Volumetric flow rate (mL/min) q total Total adsorbed methylene blue dye quantity (g) q o Equilibrium adsorbate uptake (mg/g) t Breakthrough (sampling) time (min) t t Total time (min) t total Total flow time (min) t b Usable capacity of bed up to the breakthrough point time (min) t u Time equivalent to usable capacity (min) U Influent linear velocity (cm/min) V Effluent volume (ml) V eff Total effluent volume (mL) s Time required for 50 % adsorbate breakthrough (min)

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Section: Theoretical Backgroundmentioning

confidence: 99%

Adsorption performance of continuous fixed bed column for the removal of methylene blue (MB) dye using Eucalyptus sheathiana bark biomass

2015

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“…The steepness of curves determines the column efficiency to reach saturation. The steeper curves have longer mass transfer zone which is necessary for the better column performance (Naja and Volesky 2008;Cruz-Olivares et al 2013). The total volume of the effluent treated and the fractional bed utilization was more at lower concentration because the reason for this is that at lower concentration the feed solution flows inside the column for a longer residence time.…”

Section: Packed-bed Adsorption Experimentsmentioning

confidence: 99%

Adsorption of Phenol from Aqueous Solution Using Lantana camara, Forest Waste: Packed Bed Studies and Prediction of Breakthrough Curves

Girish

Murty²

2015

Environ. Process.

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In this paper, the feasibility of the dry stem of Lantana camara waste as an adsorbent to remove phenol from aqueous solution was investigated in a packed-bed column. The effect of bed height (5, 10, 15 cm), initial phenol concentration (100, 150, 250 mg L ) on the adsorption were studied by evaluating the breakthrough curves. The following models were used to assess the column performance: Thomas, Adams-Bohart, Yoon Nelson, Modified dose-response, linear driving force model based on fluid phase concentration difference (LDFC) and linear driving force model based on particle phase concentration difference (LDFQ). The Thomas model and the LDFC model were in good agreement with the experimental data. The bed depth service time (BDST) model was used to predict adsorption performance at other experimental conditions. The maximum adsorption capacity was found to be 149.77 mg g −1 , confirming that Lantana camara is a suitable adsorbent for the removal of phenol from aqueous solution.

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“…Scalar matrix sy for each output for 500 samples of the Latin hypercube can be composed as: (6) θ i , ε i , d 0 and d j denote probabilistic parameter sampling for i = 500 elements Latin Hypercube, probabilistic regression error for i = 500 elements of the Latin Hypercube, linear regression coefficient and regression coefficients, respectively. The indices i (1-500) and j (1-7) stand for total number of Latin-Hypercube samples and total number of model parameters, respectively.…”

Section: Uncertainty and Sensitivity Analysesmentioning

confidence: 99%

“…Mathematical modeling in process development is used to bring a measure of order to observation and strengthen prediction [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A sigmoidal model for biosorption of heavy metal cations from aqueous media

Özen

Durmaz-Sam

Sayar

2015

Mathematical Biosciences

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Modeling of lead (II) biosorption by residue of allspice in a fixed-bed column

Cited by 151 publications

References 34 publications

Adsorption performance of continuous fixed bed column for the removal of methylene blue (MB) dye using Eucalyptus sheathiana bark biomass

Adsorption performance of continuous fixed bed column for the removal of methylene blue (MB) dye using Eucalyptus sheathiana bark biomass

Adsorption of Phenol from Aqueous Solution Using Lantana camara, Forest Waste: Packed Bed Studies and Prediction of Breakthrough Curves

A sigmoidal model for biosorption of heavy metal cations from aqueous media

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