Kinetics of nickel electrodeposition from low electrolyte concentration and at a narrow interelectrode gap

Widayatno, Tri

doi:10.1063/1.4938338

Cited by 6 publications

(6 citation statements)

References 26 publications

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“…Many studies on the kinetics of nickel electrodeposition from an aqueous solution have been published [13]- [24].Most of these studies studied the kinetics based on charge-transfer controlled electrode kinetics [13], [14] or diffusionkinetic control associated with a typical nucleation process [15], [24 ]. A few studies were performed to study the kinetics of nickel removal under mass transfer contro [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Electrochemical Removal of Nickel using Bio-electrochemical Reactor with Packed Bed Rotating Cylinder Cathode

A.kadhim

Abbar

2022

alkej

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The kinetics of nickel removal from aqueous solutions using a bio-electrochemical reactor with a packed bed rotating cylinder cathode was investigated. The effects of applied voltage, initial nickel concentration, the rotation speed of the cathode, and pH on the reaction rate constant (k) were studied. The results showed that the cathodic deposition occurred under mass transfer control for all values of the applied voltage used in this research. Accordingly, the relationship between concentration and time can be represented by a first-order equation. The rate constant was found to be dependent on the applied voltage, initial nickel concentration, pH, and rotation speed. It was increased as the applied voltage increased and decreased as the initial concentration increased. Its relation to the applied voltage can be fitted as follows: where ko =0.01695 min-1 and -β=0.431. pH and rotation speed have two dissimilar effects on the rate constant. Increasing the pH from 3-6 leads to an increase in the rate constant, while a decrease in the rate constant beyond pH=6 has occurred. Increasing the rotation from 100 to 300 rpm results in an increase in the rate constant. However, the rate constant decreases significantly beyond a rotation speed of 300 rpm.

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Section: Introductionmentioning

confidence: 99%

Kinetics of Electrochemical Removal of Nickel using Bio-electrochemical Reactor with Packed Bed Rotating Cylinder Cathode

A.kadhim

Abbar

2022

alkej

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“…The variation in H values is expected since acetic acid, peroxyacetic acid, water, and acid catalysts possess different solubilities. The solubility of the material will affect its transfer rate [21,22].…”

Section: The Values Of the Reaction Kinetics And Mass Transfer Parame...mentioning

confidence: 99%

Mass transfer and reaction rate parameters for the in-situ epoxidation of tamanu oil

Budiyati,

Sofyan,

Irsyad

et al. 2024

Chem. Pap.

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The stages of the double bond epoxidation process of tamanu oil include (1) the process of making peroxyacetic acid (PAA), (2) the mass transfer of several components, and (3) the epoxidation reaction, followed by further reactions within the organic phase. This study was dedicated to the determination and estimation of reaction and mass transfer parameters in the in-situ epoxidation of tamanu oil with PAA. The reaction constant values were observed to be directly proportional to the reaction temperature, except in the case of k3. There is a slight deviation in k 3 , where it decreases from 14.6178 ± 0.0507 g.mol -1 .min -1 at 40°C to 13.6561 ± 0.0081 g.mol -1 .min -1 at 50°C. The mass transfer coefficient (kca) values increase with increasing temperature, where the kca for PAA, H2O, acetic acid (AA), and H + were 12.6654 ± 0.0657 to 23.0777 ± 0.1384, 12.3793 ± 0.0549 to 23.0790 ± 0.1476, 12.4912 ± 0.0394 to 23.0789 ± 0.0978, 12.4296 ± 0.0821 to 23.0790 ± 0.1296, respectively. Conversely, the Henry constant (H) values for each component vary. This constant is associated with the solubility of each component.

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“…and is obtained by taking the squares of the L 2 (Ω) norm of the Equations (5a)-(5d) and taking the absolute norms of the Equations (5e)-(5f). Summing the terms, one obtains the corresponding least-squares functional and sees that a unique minimizer, (6), is also a solution of (5a)-(5f).…”

Section: Mathematical Modeling Of the Limiting Current Densitymentioning

confidence: 99%

“…In the literature, both globalized models, see [1,3,5,6], considering the processes in a galvanic bath with descriptions of static electric fields at their core, and localized models, considering the processes directly at the electrodes concentrating on diffusion-reaction formulations, see [2,3,[7][8][9][10][11], exist and could give hints for the limiting current density. Stateof-the-art approaches to model the limiting current density, as discussed in [12], use the assumption of thermodynamic equilibrium in the bath and use the corresponding species distributions.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of the Limiting Current Density from Diffusion-Reaction Systems

Schwoebel

Mueller

Mehner

et al. 2022

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The limiting current density is one of to the most important indicators in electroplating for the maximal current density from which a metal can be deposited effectively from an electrolyte. Hence, it is an indicator of the maximal deposition speed and the homogeneity of the thickness of the deposited metal layer. For these reasons, a major interest in the limiting current density is given in practical applications. Usually, the limiting current density is determined via measurements. In this article, a simple model to compute the limiting current density is presented, basing on a system of diffusion–reaction equations in one spatial dimension. Although the model formulations need many assumptions, it is of special interest for screenings, as well as for comparative work, and could easily be adjusted to measurements.

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Kinetics of nickel electrodeposition from low electrolyte concentration and at a narrow interelectrode gap

Cited by 6 publications

References 26 publications

Kinetics of Electrochemical Removal of Nickel using Bio-electrochemical Reactor with Packed Bed Rotating Cylinder Cathode

Kinetics of Electrochemical Removal of Nickel using Bio-electrochemical Reactor with Packed Bed Rotating Cylinder Cathode

Mass transfer and reaction rate parameters for the in-situ epoxidation of tamanu oil

Mathematical Modeling of the Limiting Current Density from Diffusion-Reaction Systems

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