Batch and fixed bed column studies for the removal of Indosol Yellow BG dye by peanut husk

Sadaf, Sana; Bhatti, Haq Nawaz

doi:10.1016/j.jtice.2013.05.004

Cited by 204 publications

(93 citation statements)

References 65 publications

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“…It is due to the high number of unsaturated biosorption sites during the biosorption process [46]. Similar results were previously reported by some researchers [45,47].…”

Section: Effect Of Biosorbent Dosesupporting

confidence: 86%

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Biosorption of cationic dye from aqueous solutions onto lignocellulosic biomass (Luffa cylindrica): characterization, equilibrium, kinetic and thermodynamic studies

et al. 2016

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In the present study, biomass fiber (Luffa cylindrica) has been successfully used as biosorbent for the removal of a cationic dye namely, methylene blue, from aqueous solution using a batch process. The characterization of the biosorbent was carried out by the infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The chemical composition has been established by the energy dispersive X-Ray spectroscopy (EDS). The effects of various parameters such as the contact time (0-160 min), solution pH (2-10), biosorbent dose (0.5-8 g L -1 ), particle size, initial MB concentration (20-300 mg L -1 ) and temperature (20-60°C) were optimized. The biosorption isotherms were investigated by the Langmuir, Freundlich, Dubinin-Radushkevich and Tempkin models. The data were well fitted with the Langmuir model, with a maximum biosorption capacity of 49.46 mg g -1 at 20°C. The kinetics data were analyzed by the pseudo-first-order and pseudo-second-order models. The mass transfer model in terms of interlayer diffusion was applied to examine the mechanisms of the rate-controlling step (R 2 = 0.9992-0.9999). The thermodynamic parameters: free energy (DG°= -5.428 to -3.364 kJ mol -1 ), enthalpy (DH°= -20.547 kJ mol -1 ) and entropy (DS°= -0.052 kJ mol -1 K -1 ) were determined over the temperatures range (20-60°C). The results indicate that Luffa cylindrica could be an interesting biomass of alternative material with respect to more costly adsorbents used nowadays for dye removal.

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“…It is due to the high number of unsaturated biosorption sites during the biosorption process [46]. Similar results were previously reported by some researchers [45,47].…”

Section: Effect Of Biosorbent Dosesupporting

confidence: 86%

“…The biosorbent dose is an important parameter because it determines the capacity of biosorbent for a given concentration of the adsorbate [45]. The effect of the biomass dosage (0.5-8 g L -1 ) on the MB biosorption was studied in 1 L MB solution (50 mg L -1 ) under optimized conditions of pH and contact time.…”

Section: Effect Of Biosorbent Dosementioning

confidence: 99%

Biosorption of cationic dye from aqueous solutions onto lignocellulosic biomass (Luffa cylindrica): characterization, equilibrium, kinetic and thermodynamic studies

et al. 2016

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“…Adsorption of cations is favoured at pH [ pHpzc, while adsorption of anions is favoured at pH \ pHpzc [45]. The experimental curve for PZC determination is presented in Fig.…”

Section: Characterisation Of Adsorbentmentioning

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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“…The highest biosorption of acid dye was observed at the lowest 0.05g/50 mL dose of all biosorbents. Such a decline in biosorption capacity of biosorbents at their higher doses might be because of overlapping of binding surface active sites, which caused a reduction in total available surface area for the binding of dye anions and also enlarged the path length of diffusion [22]. Ahmad et al [23] reported the reduction in biosorption capacity of nanopolyaniline for acid red 14 dye by increasing the biosorbent dose from 0.025 to 0.2 g.…”

Section: Effect Of Process Variables On Adsorptionmentioning

confidence: 99%

Removal of Actacid Orange-RL Dye Using Biocomposites: Modeling Studies

Noreen¹,

Bhatti²,

Zuber³

et al. 2017

Pol. J. Environ. Stud.

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Batch and fixed bed column studies for the removal of Indosol Yellow BG dye by peanut husk

Cited by 204 publications

References 65 publications

Biosorption of cationic dye from aqueous solutions onto lignocellulosic biomass (Luffa cylindrica): characterization, equilibrium, kinetic and thermodynamic studies

Biosorption of cationic dye from aqueous solutions onto lignocellulosic biomass (Luffa cylindrica): characterization, equilibrium, kinetic and thermodynamic studies

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

Removal of Actacid Orange-RL Dye Using Biocomposites: Modeling Studies

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