A comparative study of ion exchange kinetics in zinc/lead—modified zeolite-clinoptilolite systems

Trgo, Marina; Perić, Jelena; Medvidović, Nediljka Vukojević

doi:10.1016/j.jhazmat.2006.01.032

Cited by 93 publications

(51 citation statements)

References 26 publications

(50 reference statements)

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“…Natural clinoptilolite zeolite from Donje Jasinje was used in three size classes: -0.5 mm, -2+0.5 mm i -5+2 mm. Trgo et al [45], used the natural zeolite sample with particle size of 0.04-0.10 mm. Simpson and Bowman [46], used zeolite in their investigations which was the natural clinoptiloliterich tuff from the St.…”

Section: Ion Exchange Of Natural Zeolites / Surface Modified Natural mentioning

confidence: 99%

See 1 more Smart Citation

Defining the size class as the quality parameter of zeolite assortment of products

Sekulić¹,

Kolonja²,

Knežević³

2013

Min Metal Eng Bor

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Quality requirements for the product assortments, obtained from a large number of non-metallic mineral raw materials, are defined, and above all, they have the defined particle size. Are the quality requirements for zeolite assortments defined? Searching for the answer to this question, an internet research was done. The web pages of the most significant producers of materials based on natural zeolite were studied as well as the papers of a large number of prominent researchers whose experiments are focused on the natural zeolite. This paper presents the findings primarily with the aspect of particle size as the quality parameter of zeolite assortments. Based on this analysis, it is considered that it should define the quality requirements of zeolite assortments, especially the particle size for each product. In fact, it is important to know the particle size in mineral processing in order to choose less expensive procedure for obtaining the finall product.

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Section: Ion Exchange Of Natural Zeolites / Surface Modified Natural mentioning

confidence: 99%

“…Prirodnog zeolita tipa Donje Jasinje je korišćen u tri veličine klase: -0.5 mm +0,5 mm, -2 i +2 -5 mm. Trgo i dr. [45], za istraživanje su koristili prirodni zeolit veličine čestica 0.04-0.10 mm. Simpson i Boumen [46] su koristili klinoptilolit-tuf iz St.…”

Section: Jonske Izmene Prirodnih Zeolita / Površinski Modifikovani Prunclassified

Defining the size class as the quality parameter of zeolite assortment of products

Sekulić¹,

Kolonja²,

Knežević³

2013

Min Metal Eng Bor

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“…It has previously been reported in literature that sodium-type natural clinoptilolite favours the exchange of Cu 2+ over Co 2+ (Zamzow and Murphy, 1992;Coruh, 2008). Cationic exchange of Cu on chabazite and clinoptilolite, Zn exchange on clinoptilolite, Co exchange on clinoptilolite and Cr exchange on phillipsite and chabazite have all been reported (Blanchard et al, 1984;Assenov et al, 1988;Trgo et al, 2006).…”

Section: Introductionmentioning

confidence: 96%

The effect of conditioning with NaCl, KCl and HCl on the performance of natural clinoptilolite’s removal efficiency of Cu<sup>2+</sup> and Co<sup>2+</sup> from Co/Cu synthetic solutions

Mamba¹,

Nyembe²,

Mulaba‐Bafubiandi³

2010

WSA

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Southern African clinoptilolite's capability as an ion-exchanger with respect to Cu 2+ and Co 2+ was investigated in order to consider its viability in the removal of metal cations from aqueous solutions. The effect of chemical conditioning was investigated using sodium chloride (NaCl), hydrochloric acid (HCl) and potassium chloride (KCl). The most efficient activating or conditioning reagent was found to be HCl at 0.02 M concentration, followed by KCl at 0.04 M and then NaCl at 0.04 M. The worst performing clinoptilolite was the original form under the conditions described in this study and it thus served as a control. The HCl-conditioned clinoptilolite was the most efficient in metal removal (79% Co 2+ and 73% Cu 2+) followed by the NaCl-conditioned form (69% Co 2+ and 54% Cu 2+ ), while the KCl-conditioned form adsorbed 54% and 73% of Co 2+ and Cu 2+, respectively. The column method was used for the cation-exchange processes with synthetic solutions of 0.0020 M, 0.0698 M and 0.2000 M of Co 2+ and Cu 2+ concentrations which were measured using atomic absorption spectroscopy (AAS).

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“…The removal of heavy metal in an effective manner from water and wastewater is, thus, ecologically very important. Common cleaning methods for the removal of heavy metal comprise membrane separation (Chakravarti, Chwodhury, Chakraborty, Chakraborty, & Mukherjee, 1995 ), electrochemical precipitation (Kongsricharoern & Polprasert, 1996), emulsion per traction (Ortiz, Roman, Corvalan, & Eliceche, 2003), ion exchange (Trgo, Peric, & Medvidovic, 2006), preconcentration (Hirata, Honda, & Kumamru, 1989), fertilization (Mandaoker, Dharmadhikari, & Dara, 1994) and adsorption (Danil de Namor & Abbas, 2010 ;Bhattacharya, Naiya, Mandal, & Das, 2008). These methods differ with respect to cost, complexity and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Modified Saw Dust for the Removal of Lead Cations from Aqueous Media

Abbas¹,

Chaaban²,

Karamé³

2012

IJC

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Saw dust modified with chloroethylacetate was prepared. The product was used as an extracting agent for the solid-phase extraction of lead cations from aqueous media. The uptake performance of modified saw dust (MSD) for removal of Pb(II) cations was investigated using batch method. The influences of some experimental parameters like initial concentration of the cation, extraction time, concentration of the saw dust, pH and temperature were studied. Three adsorption isotherms [Langmuir, Freundlich and Dubinin-Redushkevish (D-R)] were used to analyze the equilibrium data. The sorption capacity of modified saw dust was found to be 78.1 mg/g at 298 K from 164 mg/l aqueous solution of lead cation. The mean free energy calculated from D-R model was found to be 15.81 KJ/mol, indicating that chemisorption is involved in the extraction process. The removal of lead cation does not change with increasing temperature. The present method has been compared with the previous methods.

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A comparative study of ion exchange kinetics in zinc/lead—modified zeolite-clinoptilolite systems

Cited by 93 publications

References 26 publications

Defining the size class as the quality parameter of zeolite assortment of products

Defining the size class as the quality parameter of zeolite assortment of products

The effect of conditioning with NaCl, KCl and HCl on the performance of natural clinoptilolite’s removal efficiency of Cu<sup>2+</sup> and Co<sup>2+</sup> from Co/Cu synthetic solutions

Modified Saw Dust for the Removal of Lead Cations from Aqueous Media

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