Removal of Zn2+, Fe2+, Cu2+, Pb2+, Cd2+, Ni2+ and Co2+ ions from aqueous solutions using modified phosphate dolomite

Иванец, А. И.; Китикова, Н. В.; Шашкова, И. Л.; Oleksiienko, Olga; Levchuk, Irina; Sillanpää, Mika

doi:10.1016/j.jece.2014.03.018

Cited by 41 publications

(13 citation statements)

References 27 publications

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“…Similarly, Ivanets et al . proposed removal values of 2.57 mg/g and 1.23 mg/g for lead and cadmium, respectively. These results indicated a much lower removal efficiency for the dolomitic sorbent reported in literature than RD and YD dolomites from southern Tunisia, which showed respective removal values of 33.25 mg/g and 24.80 mg/g for lead, and 1.77 mg/g and 1.31 mg/g for cadmium.…”

Section: Resultsmentioning

confidence: 95%

“…, and Ivanets et al . used carbonates and composite materials for the removal of potentially toxic metals from aqueous solutions by adsorption technique. Further studies were undertaken to remove dying pollutants by the implementation of advanced cost‐effective methods .…”

Section: Introductionmentioning

confidence: 99%

“…Numerous researchers have focused on the removal of various kinds of pollutants from wastewater using low cost adsorbents [16][17][18][19]. In this context, Mohammadi et al [20], Gupta et al [21], and Ivanets et al [22] used carbonates and composite materials for the removal of potentially toxic metals from aqueous solutions by adsorption technique. Further studies were undertaken to remove dying pollutants by the implementation of advanced cost-effective methods [23].…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical characterization of natural dolomite for efficient removal of lead and cadmium in aqueous systems

Sdiri

2018

Env Prog and Sustain Energy

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Physicochemical characterization of naturally abundant carbonates has been undertaken to evaluate their potentialities in the removal of lead and cadmium ions in aqueous systems. Powdered dolomite samples, collected from the Jebel Rehach location, southern Tunisia, were used in their natural form for the removal of both cadmium and lead in aqueous conditions. The removal experiments were carried out in batch by mixing known amount of dolomite powder with a metal solution (lead or cadmium). The mixture was shaken at 200 rpm under the experimental conditions of pH 6, temperature (25°C), dolomite concentration 3 g/L, and cadmium 10 mg/L and lead 100 mg/L solutions. Shaking time was 60 min. Our results showed that the studied dolomite samples were mainly composed of calcium and magnesium oxides; other impurities were also detected. Adsorption data showed that dolomitic samples of the Triassic Rehach formation (southern Tunisia) removed substantial amounts of lead and cadmium ions in aqueous systems. It was found that lead removal efficiency reached 24.80 and 33.25 mg/g, which is much higher than that of cadmium (1.31–1.77 mg/g). It was also observed that more than 95% of the total adsorptive capacity was achieved after 30 min of agitation, but 60 min was used to ensure equilibration time. These results suggested that the Triassic Rehach dolomite, Tunisia, can be effectively used for capturing lead and cadmium ions in aqueous conditions. © 2018 American Institute of Chemical Engineers Environ Prog, 37: 1901–1907, 2018

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physicochemical characterization of natural dolomite for efficient removal of lead and cadmium in aqueous systems

Sdiri

2018

Env Prog and Sustain Energy

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“…Therefore, most scientists researchs are devoted on analyzing and monitoring heavy metal ions content in environmental sample which may have concentrations in the mg g -1 , ng g -1 and pg g -1 ranges [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Modification of platinum nanoparticles loaded on activated carbon and activated carbon with a new chelating agent for solid phase extraction of some metal ions

Ghaedi

Noormohamadi

Asfaram

et al. 2016

Journal of Molecular Liquids

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“…), including ions of stable and radioactive strontium [1,2]. An effi ciency of sorption purifi cation is largely determined by both the nature of the sorbent and sorption process conditions (composition of a solution, a ratio of the solution volume to weight of the sorbent, pH, etc.)…”

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confidence: 99%

Stability of calcium and magnesium phosphate sorbents in solution of calcium chloride and complexing agents

et al. 2015

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The study of the stability and physicochemical transformations of calcium and magnesium phosphate sorbents in a solution of calcium chloride and complexing agents: disodium salt of ethylenediaminetetraacetic acid and oxyethylidenediphosphonic acid established that calcium phosphates undergo no signifi cant changes in aqueous systems under study, while magnesium phosphates (trimagnesium phosphate and magnesium hydrogenphosphate) are converted into calcium phosphates in solutions of CaCl 2 , therewith the introduction of ethylenediaminetetraacetic acid (EDTA) into the solution of CaCl 2 has no signifi cant effect on the magnesium phosphate conversion process, and introduction of oxyethylidene diphosphonic acid (OEDP) inhibits crystallization of calcium phosphate formed. Observed conversions should be considered when using magnesium and calcium phosphates as sorbents.Sorbents obtained earlier based on calcium and magnesium phosphates have shown high effi ciency in purifi cation of aqueous solutions from various metal ions (Zn 2+ , Cu 2+ , Pb 2+ , Cd 2+ , Ni 2+ , Co 2+ , etc.), including ions of stable and radioactive strontium [1,2]. An effi ciency of sorption purifi cation is largely determined by both the nature of the sorbent and sorption process conditions (composition of a solution, a ratio of the solution volume to weight of the sorbent, pH, etc.) [3−5]. Researching the sorption of ions of various metals was performed by means of model solutions in the absence of any other impurities, while the actual wastewater and liquid radioactive waste contain substantial quantities of dissolved calcium salts and organic compounds: surfactants and chelating agents [usually ethylenediaminetetraacetic acid (EDTA), oxyethylidenediphosphonic (OEDP) acid [6].Given that phosphate sorbents contain calcium and magnesium cations, which form stable complexes with EDTA and OEDP a possible interaction in systems chelating agent−sorbent can be propose, and in the solutions of CaCl 2 calcium and magnesium phosphates may undergo chemical and phase transformations. However, the reports on the interaction of calcium and magnesium phosphates with aqueous solutions of chelating agents are reduced to the study of the interaction of hydroxyapatite with EDTA [7,8].In the study researching the stability, chemical and physical processes occurring in the interaction of calcium and magnesium phosphate sorbents with calcium ions and chelating agents (EDTA and OEDP) was performed for effective practical use of calcium and magnesium phosphates in the sorption purifi cation of real wastewater and liquid radioactive waste. EXPERIMENTALСalcium and magnesium synthetic phosphates of different composition were used as objects of study: acidic CaNPO 4 (calcium hydrogen phosphate, CHP) and MgHPO 4 ·3H 2 O (magnesium hydrogen phosphate trihydrate, MHPTH); medium Ca 3 (PO 4 ) 2 ·2H 2 O (tricalcium phosphate dihydrate, TCPDH) and Mg 3 (PO 4 ) 2 ·10H 2 O (trimagnesium phosphate decahydrate, TMPDH) with a small admixture of MgNH 4 PO 4 ·H 2 O and Mg 2 PO 4 OH·4H ...

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Removal of Zn2+, Fe2+, Cu2+, Pb2+, Cd2+, Ni2+ and Co2+ ions from aqueous solutions using modified phosphate dolomite

Cited by 41 publications

References 27 publications

Physicochemical characterization of natural dolomite for efficient removal of lead and cadmium in aqueous systems

Physicochemical characterization of natural dolomite for efficient removal of lead and cadmium in aqueous systems

Modification of platinum nanoparticles loaded on activated carbon and activated carbon with a new chelating agent for solid phase extraction of some metal ions

Stability of calcium and magnesium phosphate sorbents in solution of calcium chloride and complexing agents

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