Applications on agricultural and forest waste adsorbents for the removal of lead (II) from contaminated waters

Saka, Cafer; Şahi̇n, Ömer; Küçük, Mürsel

doi:10.1007/s13762-012-0041-y

Cited by 130 publications

(49 citation statements)

References 112 publications

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“…Conventional metal removal techniques such as reverse osmosis, solvent extraction, lime coagulation and ion exchange methods [7], [8] are encountered with certain major disadvantages such as high energy requirements, incomplete removal and generation of large quantity of toxic waste sludge due to various reagents used in a series of treatments. Adsorption techniques are proved to be an effective and attractive process for removal of non-biodegradable pollutants [9], [10] from wastewater. Recently, the removal of metals, compounds and particulates from solution by biological material is recognized as an extension to adsorption and is named as biosorption [11].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Farouq¹,

Yousef²

2015

IJCEA

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Abstract-The Biosorption of Copper (II) ions from aqueous solution on natural biosorbent (Mussels) has been investigated. Batch shaking adsorption experiments were performed and equilibrium and kinetic isotherms were tested. Results show that Chitin can remove Copper (II) effectively from aqueous solution. To predict the adsorption isotherms and to determine the characteristic parameters for process design, eight isotherm models:Langmuir, Freundlich, Elovich, Temkin, Fowler-Guggenheim, Jovanovic, Koble-Corrigan, and Hill were applied to experimental data. The equilibrium data were analyzed. The results reveal that the adsorption isotherm models fitted the data in the order: Jovanovic > Freundlich , Koble-Corrigan> Temkin> Fowler-Guggenheim> Elovich> Langmuir, Hill. Adsorption kinetic data were tested using pseudo-first order, pseudo-second order and Elovich model. The kinetics of the adsorption were found to fit the Elovich model.

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Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Farouq¹,

Yousef²

2015

IJCEA

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“…In similar study by Saka et al (2012) was shown that date fruit core in compare to onion peel was better in absorbing of Lead ions.…”

Section: Introductionmentioning

confidence: 84%

Removal of Cd and Pb ions from model solutions using natural sorbent

Haratiyan¹,

Hakimzadeh²,

Abedi³

2017

Ukr. food j.

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Corresponding author:Vahid Hakimzadeh E-mail: v.hakimzadeh@ yahoo.com DOI:10.24263/2304-974X-2017-6-2-13 Introduction. One of the limitations of chemical absorbents as a simple and effective method for removal the contamination due to surface absorption mechanism was their exorbitant costs. Therefore, the study of the potential of cheap and accessible natural adsorbents in the removal of heavy metals from industrial waste can be interesting.Materials and Methods. For the study of absorbent quantity, pH and temperature effectiveness on absorption capacity of cherry core, first the artificial solution was supplied in 1000 mg/lit concentration and was mixed by certain amount of absorbent at certain temperature and pH for 60 minutes. The solutions filtered by filter paper and the contents of each ion in initial and filtered solution were determinate by atomic absorption spectrometry. Effect of absorbent quantity (0.2-2 g/100 ml), pH (3-7) and temperature (30-70 °C) on absorption rate of Lead and Cadmium investigated in Response Surface Methodology (RSM).Results and Discussion. Increasing temperature improved the absorption rate of cadmium due to decrease of viscosity and accelerate mass transfer. Increasing of temperature limits the formation of boundary layer around the absorbent due to reduce of solution viscosity. So, ion absorption is intensified. Also, Increasing of absorbent quantity raises the surface contact and as results the chance of collision ions is improved with absorbent particles. In the other words, high quantity of absorbent increases the required cites to attach ions. Cadmium elimination at high value of pH was decreased due to conversion of ionic structure to molecular structure. Cadmium absorption rate was also increased by enlarging of absorbent; because of exist the more cites for absorption. Increasing the pH to 5 led to increase the Lead ions absorption, but rise of pH to 7 reduced absorption of Lead. The reason of this pneumonia is due to change of Lead ion structure to molecular state in alkaline pH. While in lower pH, competition hydrogen ions with cations decrease the absorption of metal ions.Conclusion. The best experimental parameters for maximum absorption ions were determined at the following conditions: temperature 70 °C, pH 5 and concentration of absorbent 2 g/100ml. By applying these conditions, Lead and Cadmium ions were decreased 79.18 and 76.56% respectively from artificial solutions. Also, optimal conditions were tested on sugar industry wastewater, which results indicated the rate of absorption for Lead and Cadmium was obtained 98.98 and 76.1% respectively.

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“…Pb(II) was selected to investigate the relationship between the surface properties and the heavy metal ion removal ability of FeH x composites, not only due to its environmental relevance (Abdel-Ghani et al 2007;Okoye et al 2010;Saka et al 2012) but also due to its strong affinity toward apatite. Preliminary kinetics experiments Fig.…”

Section: Pb(ii) Removal Experimentsmentioning

confidence: 99%

Magnetically recoverable iron oxide–hydroxyapatite nanocomposites for lead removal

Yang

Masse

Rouelle

et al. 2014

Int. J. Environ. Sci. Technol.

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Magnetite-hydroxyapatite nanocomposites were prepared by in situ precipitation of the calcium phosphate phase in an iron oxide colloidal suspension. Homogeneous magnetic powders were obtained with iron oxide content up to 50 wt%, without perturbation of the magnetite structure nor formation of additional calcium phosphates. The surface area of the composite powder was significantly increased after incorporation of magnetite due to the better apatite particle dispersion. This results in an increased available reactive surface, favoring lead sorption and hydroxypyromorphite precipitation, both leading to an enhanced lead removal capacity of the composite materials. The magnetic properties of magnetite nanocrystals were preserved upon association with hydroxyapatite. Full recovery of the composite powder after lead removal could be achieved using a simple magnet at a relatively low iron oxide content (20 wt%). This indicates a strong interaction between hydroxyapatite and magnetite particles within the composite powder. The procedure is simple, easily scalable and involves only environmental friendly materials.

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Applications on agricultural and forest waste adsorbents for the removal of lead (II) from contaminated waters

Cited by 130 publications

References 112 publications

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Removal of Cd and Pb ions from model solutions using natural sorbent

Magnetically recoverable iron oxide–hydroxyapatite nanocomposites for lead removal

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