Leaching kinetics of colemanite by aqueous EDTA solutions

Karagölge, Zafer; Alkan, Mahir; Kocakerìm, M. Muhtar

doi:10.1007/bf02649658

Cited by 12 publications

(9 citation statements)

References 5 publications

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“…Karagö lge et al carried out it in ethylene diamine tetraacetic acid (EDTA). They found that the process was found by chemically reaction controlled and the activation energy was calculated as 50.60 kJ/mol [7]. The dissolution kinetics of colemanite was investigated in ammonium chloride by Kum et al, and they found that the dissolution was controlled by chemically reaction.…”

Section: Introductionmentioning

confidence: 99%

Leaching kinetics of colemanite in ammonium hydrogen sulphate solutions

Guliyev¹,

Kuşlu²,

Çalban³

et al. 2012

Journal of Industrial and Engineering Chemistry

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Section: Introductionmentioning

confidence: 99%

Leaching kinetics of colemanite in ammonium hydrogen sulphate solutions

Guliyev¹,

Kuşlu²,

Çalban³

et al. 2012

Journal of Industrial and Engineering Chemistry

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“…In a kinetic investigation of colemanite leaching by Titriplex-III, it was found that the dissolution rate increased by decreasing the particle size and pH and increasing the Titriplex-III concentration and temperature . Yartaşı et al studied the kinetics and mechanism of colemanite dissolution in boric acid solutions.…”

Section: Introductionmentioning

confidence: 99%

Dissolution of Colemanite in Aqueous Solutions Saturated with Both Sulfur Dioxide (SO₂) Gas and Boric Acid

Kurtbaş

Kocakerìm

Küçük

et al. 2006

Ind. Eng. Chem. Res.

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Boron compounds that are produced from boron ores are important industrial materials. In this report, an alternative method for the formation of boric acid obtained via the reaction between colemanite and sulfuric acid in aqueous media was studied. For this purpose, the kinetics and mechanism of the dissolution of colemanite were investigated in saturated boric acid solutions that were saturated with SO 2 gas. In the experiments, the particle size, solid-to-liquid ratio, stirring speed, and temperature were chosen as parameters. As a result, the conversion rate increased as the particle size and solid-to-liquid ratio each decreased and the temperature increased; however, the effect of stirring speed was very minimal. In addition, the conversion rate was determined to fit the Avrami model, and the activation energy of the process was estimated to be 50.15 kJ/mol. The integrated rate equation for this conversion was determined to be as follows: -ln(1 -X) ) (1.26 × 10 5 )[SO 2 ]D -1.52

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“…Kocakerim and Alkan studied the kinetics of dissolution colemanite in water saturated with SO 2 and found that the dissolution rate was chemically controlled . Karagölge et al investigated the leaching kinetics of colemanite in aqueous dissodium ethylenediaminetetraacetic acid (EDTA) solutions and calculated the activation energy as 50.6 kJ·mol -1 and the preexponential factor as 5.14 × 10 7 m·s -1 . Temur et al carried out the dissolution of colemanite in phosphoric acid solutions and concluded that the dissolution rate was a chemical reaction controlled process .…”

Section: Introductionmentioning

confidence: 99%

Dissolution of Kestelek's Colemanite Containing Clay Minerals in Water Saturated with Sulfur Dioxide

Küçük

Kocakerìm

Yartaşı

et al. 2002

Ind. Eng. Chem. Res.

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Colemanite is one of the most important underground riches of Turkey, having approximately 60% of the world boron deposits, and it has a large portion in the deposits. When colemanite having a 2CaO·3B2O3·5H2O formula is mined naturally, it contains various clay minerals. During boric acid production by a sulfuric acid process, some kinds of clay minerals cause difficulties in the filtration process. In this study, the dissolution of Kestelek colemanite has been investigated in SO2-saturated water as an alternative method to the sulfuric acid process to remove the difficulties faced in filtration. The particle size, solid-to-liquid ratio, stirring speed, and reaction temperature have been chosen as parameters in the experiments. It was determined that the dissolution rate of colemanite increased with decreasing particle size and solid-to-liquid ratio and increasing reaction temperature but was unaffected by the stirring speed. The activation energy of the dissolution process was estimated to be 39.53 kJ·mol-1. A semiempirical model was found by using experimental data and package programs, as follows: 1 − (1 − X)1/3 = 3.423 × 104 D -0.70(S/L)-0.65e-4754/ T t. Evaluation of the experimental data and semiempirical model shows that the dissolution process is controlled by a chemical reaction.

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Leaching kinetics of colemanite by aqueous EDTA solutions

Cited by 12 publications

References 5 publications

Leaching kinetics of colemanite in ammonium hydrogen sulphate solutions

Leaching kinetics of colemanite in ammonium hydrogen sulphate solutions

Dissolution of Colemanite in Aqueous Solutions Saturated with Both Sulfur Dioxide (SO₂) Gas and Boric Acid

Dissolution of Kestelek's Colemanite Containing Clay Minerals in Water Saturated with Sulfur Dioxide

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Leaching kinetics of colemanite by aqueous EDTA solutions

Cited by 12 publications

References 5 publications

Leaching kinetics of colemanite in ammonium hydrogen sulphate solutions

Leaching kinetics of colemanite in ammonium hydrogen sulphate solutions

Dissolution of Colemanite in Aqueous Solutions Saturated with Both Sulfur Dioxide (SO2) Gas and Boric Acid

Dissolution of Kestelek's Colemanite Containing Clay Minerals in Water Saturated with Sulfur Dioxide

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Product

Resources

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Dissolution of Colemanite in Aqueous Solutions Saturated with Both Sulfur Dioxide (SO₂) Gas and Boric Acid