Characterization of lead sorption by the natural and Fe(III)-modified zeolite

Kragović, Milan; Daković, Aleksandra; Marković, Marija; Krstić, Jugoslav; Gatta, G. Diego; Rotiroti, Nicola

doi:10.1016/j.apsusc.2013.07.016

Cited by 124 publications

(55 citation statements)

References 33 publications

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“…Based on the experimental results, it can be concluded that pH of the solution has to range from 4 to 7, with there being a maximum and stable capture of lead. This result agrees with previously reported values of pH (Ramos et al 2004;Hamidpour et al 2011;Kragović et al 2013b). In the present work, pH of 5 was selected for the following experiments.…”

Section: Effect Of Ph Of Lead Solutionsupporting

confidence: 94%

“…The pseudo-second-order kinetic model provided a near-perfect match between the theoretical q e = 4.79 mg g -1 and experimental q e = 4.78 mg g -1 sorption capacities under equilibrium conditions. Good correlations of experimental data with the pseudo-second-order kinetic model have also been reported for the sorption of lead on clinoptilolite (Sprynskyy et al 2006;Hamidpour et al 2011;Kragović et al 2013b), natural zeolitic tuff (Karatas 2012) and some other adsorbents (Ho and Ofomaja 2006;Enamorado et al 2011). …”

Section: Effect Of Ph Of Lead Solutionmentioning

confidence: 71%

“…Most reports, including those dealing with the sorption of lead on zeolites, concluded that the pseudosecond-order model fits to the experimental data (Ho 2006;Hamidpour et al 2011;Enamorado et al 2011;Kragović et al 2013b;Malamis and Katsou 2013). In particular, it has been established that adsorption processes can be described by the pseudo-second-order model for any adsorbent/adsorbate system, when the initial concentration of solute is low (Azizian 2004).…”

Section: Effect Of Ph Of Lead Solutionmentioning

confidence: 99%

“…Also, the pseudo-first-order and pseudo-second-order models have been reported in order to describe the kinetics of the solution/solid adsorption systems (Ho 2006;Sprynskyy et al 2006;Hamidpour et al 2011;Enamorado et al 2011;Karatas 2012;Kragović et al 2013b;Malamis and Katsou 2013). Most reports, including those dealing with the sorption of lead on zeolites, concluded that the pseudosecond-order model fits to the experimental data (Ho 2006;Hamidpour et al 2011;Enamorado et al 2011;Kragović et al 2013b;Malamis and Katsou 2013).…”

Section: Effect Of Ph Of Lead Solutionmentioning

confidence: 99%

See 3 more Smart Citations

Cuban zeolite for lead sorption: application for water decontamination and metal quantification in water using nondestructive techniques

Enamorado-Horrutiner

Villanueva-Tagle

Behar

et al. 2016

Int. J. Environ. Sci. Technol.

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In the present paper, a Cuban clinoptilolite-type zeolite was used as lead sorbent. The effect of chemical conditioning with 1 mol L -1 NaCl, NaOH and NH 3 solutions at room temperature on the ion exchange capacity for lead uptake by clinoptilolite has been investigated. According to the batch experiments, NH 3 -treated clinoptilolite exhibited the highest sorption capacity. For this material, the effect that contact time, solid-to-liquid ratio and pH have on the removal of lead from aqueous solutions was comprehensively analyzed, and the most suitable values for these parameters were selected afterward. The pseudo-second-order kinetic model was appropriate for the description of the kinetic performance of the sorption. The Langmuir and Freundlich isotherm models were applied to describe sorption process, and the best fit was reached by using the Freundlich model. The nondestructive techniques, namely particle-induced X-ray emission and X-ray fluorescence, have successfully been evaluated for determining lead concentration in water by its concentration in zeolite. In addition, the more traditional flame atomic absorption spectrometry determination of lead in water was also improved.

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Section: Effect Of Ph Of Lead Solutionsupporting

confidence: 94%

Section: Effect Of Ph Of Lead Solutionmentioning

confidence: 71%

Section: Effect Of Ph Of Lead Solutionmentioning

confidence: 99%

Section: Effect Of Ph Of Lead Solutionmentioning

confidence: 99%

See 2 more Smart Citations

Cuban zeolite for lead sorption: application for water decontamination and metal quantification in water using nondestructive techniques

Enamorado-Horrutiner

Villanueva-Tagle

Behar

et al. 2016

Int. J. Environ. Sci. Technol.

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“…In our previous studies [6,7], the adsorption of Pb 2+ from water solutions by natural and Fe(III)-modified zeolite (clinoptilolite) with particle size <0.043 mm was investigated. Results showed that after modification, adsorption capacity of the starting material increased from 66 to 133 mg/g.…”

Section: Introductionmentioning

confidence: 99%

Natural and Modified Zeolite—Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions

et al. 2018

Self Cite

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Abstract:In present paper, the influence of the initial pH and concentration of Pb 2+ on its adsorption by the natural (NZA) and Fe(III)-modified zeolite-alginate beads (FeA) was studied. Results showed that modification of the starting materials have a positive effect on their adsorption capacities (102 and 136 mg/g for the NZA and FeA, respectively). After encapsulation, the mechanism of lead adsorption by both adsorbents was changed and ion exchange dominates. The best adsorption was achieved for initial pH > 3.8. Cation exchange capacity, structural properties, and hydrophobicity of samples were also determined, and the presence of the alginate has no significant influence on investigated properties of samples. Experiments on wastewater from tailings of lead and zinc mine Grot, Serbia, showed that after treatment with both adsorbents, the content of the most abundant heavy metals (Pb, Zn, Hg, and Mn) significantly decreased.

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Removing Co(II) and Mn(II) ions effectively from aqueous solutions by means of chemically non‐processed Mardin stone waste: Equivalent, kinetic, and thermodynamic investigations

Canpolat

2022

Env Prog and Sustain Energy

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Mardin stone waste (MSW) was used to explore the removal of cobalt (II) and manganese (II) ions from aqueous solutions. Kinetic data collected at various temperatures were applied to different kinetic equations. Different adsorption isotherm models were evaluated to better understand the adsorption process. Energy dispersion spectroscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) were used to analyze the surface characteristics of MSW. Results indicated that the Langmuir isotherm model, which accounts for chemical absorption and potential irreversibility of the process, may be used with the isotherm data. The adsorption of Co 2+ and Mn 2+ ions yielded kinetic data that was best characterized as pseudo-second-order with the greatest regression coefficient. While the adsorption capacity of the Co 2+ ion was determined to be 7.34, 7.75, and 8.19 mg g À1 at 298, 308, and 318 K, respectively, the adsorption capacity of Mn 2+ was calculated to be 8.20, 8.42, and 8.78 mg g À1 under the same circumstances. The adsorption of Co 2+ and Mn 2+ ions by means of MSW was natural and exothermic according to thermodynamic analyses.

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Characterization of lead sorption by the natural and Fe(III)-modified zeolite

Cited by 124 publications

References 33 publications

Cuban zeolite for lead sorption: application for water decontamination and metal quantification in water using nondestructive techniques

Cuban zeolite for lead sorption: application for water decontamination and metal quantification in water using nondestructive techniques

Natural and Modified Zeolite—Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions

Removing Co(II) and Mn(II) ions effectively from aqueous solutions by means of chemically non‐processed Mardin stone waste: Equivalent, kinetic, and thermodynamic investigations

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