Evaluation of the Effect of the Rotational Electrode Speed in an Electrochemical Reactor Using Computational Fluid Dynamics (CFD) Analysis

Mollinedo-Ponce-de-León, Helvio R.; Martínez-Delgadillo, Sergio A.; Mendoza-Escamilla, Víctor X.; Torres, Claudia del Carmen Gutiérrez; Bernal, José Alfredo Jiménez

doi:10.1021/ie201782m

Cited by 14 publications

(13 citation statements)

References 9 publications

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“…Wastewater inlets and outlets have great significance in turbulence terms and hence in mass transport. The use of CFD simulation tools is becoming a hot topic in electrochemical engineering in the attempt to obtain the best configuration for high efficiency. ,− However, very little attention is paid to the design of novel reactors for the removal of organics, and the most important references are focused on the removal of simpler pollutants like chromium(VI). ,− …”

Section: Significance Of Cell Design and Scale Upmentioning

confidence: 99%

Single and Coupled Electrochemical Processes and Reactors for the Abatement of Organic Water Pollutants: A Critical Review

et al. 2015

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Traditional physicochemical and biological techniques, as well as advanced oxidation processes (AOPs), are often inadequate, ineffective, or expensive for industrial water reclamation. Within this context, the electrochemical technologies have found a niche where they can become dominant in the near future, especially for the abatement of biorefractory substances. In this critical review, some of the most promising electrochemical tools for the treatment of wastewater contaminated by organic pollutants are discussed in detail with the following goals: (1) to present the fundamental aspects of the selected processes; (2) to discuss the effect of both the main operating parameters and the reactor design on their performance; (3) to critically evaluate their advantages and disadvantages; and (4) to forecast the prospect of their utilization on an applicable scale by identifying the key points to be further investigated. The review is focused on the direct electrochemical oxidation, the indirect electrochemical oxidation mediated by electrogenerated active chlorine, and the coupling between anodic and cathodic processes. The last part of the review is devoted to the critical assessment of the reactors that can be used to put these technologies into practice.

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Section: Significance Of Cell Design and Scale Upmentioning

confidence: 99%

Single and Coupled Electrochemical Processes and Reactors for the Abatement of Organic Water Pollutants: A Critical Review

et al. 2015

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“…73 From another angle the fluid turbulent flow has diffusive and dissipative characteristics due to the generated vorticity and velocity fluctuations inside the reactor which produces higher mass transfer-rate inside the reactor. 74 …”

Section: Bubbles Management By External Sourcesmentioning

confidence: 99%

Review—Physicochemical Hydrodynamics of Gas Bubbles in Two Phase Electrochemical Systems

Taqieddin

Nazari

Rajić

et al. 2017

J. Electrochem. Soc.

116

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Electrochemical systems suffer from poor management of evolving gas bubbles. Improved understanding of bubbles behavior helps to reduce overpotential, save energy and enhance the mass transfer during chemical reactions. This work investigates and reviews the gas bubbles hydrodynamics, behavior, and management in electrochemical cells. Although the rate of bubble growth over the electrode surface is well understood, there is no reliable prediction of bubbles break-off diameter from the electrode surface because of the complexity of bubbles motion near the electrode surface. Particle Image Velocimetry (PIV) and Laser Doppler Anemometry (LDA) are the most common experimental techniques to measure bubble dynamics. Although the PIV is faster than LDA, both techniques are considered expensive and time-consuming. This encourages adapting Computational Fluid Dynamics (CFD) methods as an alternative to study bubbles behavior. However, further development of CFD methods is required to include coalescence and break-up of bubbles for better understanding and accuracy. The disadvantages of CFD methods can be overcome by using hybrid methods. The behavior of bubbles in electrochemical systems is still a complex challenging topic which requires a better understanding of the gas bubbles hydrodynamics and their interactions with the electrode surface and bulk liquid, as well as between the bubbles itself.

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“…However, there is a limited understanding of the validity of these lower-cost sensor systems to measure angular velocity. Angular velocity is characterized by the rate at which a body rotates around a center of rotation and is typically expressed in units of revolutions per minute (r/min), 13 radians per second (rad/s) or degrees per second (°/s). 14,15 Assuming rigid body mechanics, the linear acceleration of a point A on the body can be calculated from the angular velocity of the body if the distance between point A and the point of rotation is known.…”

Section: Introductionmentioning

confidence: 99%

Validity of an inertial device for measuring linear and angular velocity in a leg extension exercise

Pino-Ortega

Bastida-Castillo

Hernández-Belmonte

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part P:

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Traditionally, linear transducers have been used to evaluate resistance exercise with linear displacement. The current problem is the assessment of exercises with curvilinear displacement. For this reason, new devices should be assessed during training sessions. The purpose was to evaluate (1) the concurrent validity of mean linear velocity and (2) the convergent validity of mean angular velocity measured by an inertial device during a leg extension exercise. Ten elite-level football players completed six series of five repetitions of a leg extension exercise. WIMU PRO™ inertial device and GymAware® linear transducers as criterion measure were used to register data. To assess concurrent validity, the bias of the inertial device measures of velocity was analyzed with Bland–Altman plots with limits of agreement set at 95%. Convergent validity of inertial device measures of velocity was assessed with Pearson’s correlation analysis. Concurrent analysis showed a nearly perfect validity between linear transducers and inertial device in linear ( Bias = –0.011 ± 0.006) and angular velocity (–0.34 ± 2.08). A nearly perfect Pearson’s product–moment correlation coefficient between an inertial device and linear transducers in linear velocity ( r = 0.999) and between an inertial device and linear transducers (calculated) in angular velocity ( r = 0.999) was found. In conclusion, WIMU PRO is valid for measuring linear and angular velocity during two-dimensional linear and rotational motions of exercise equipment. This device can be used as a useful tool to assess movement velocity in resistance training exercises, even in curvilinear movements when linear transducers have obvious limitations.

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Evaluation of the Effect of the Rotational Electrode Speed in an Electrochemical Reactor Using Computational Fluid Dynamics (CFD) Analysis

Cited by 14 publications

References 9 publications

Single and Coupled Electrochemical Processes and Reactors for the Abatement of Organic Water Pollutants: A Critical Review

Single and Coupled Electrochemical Processes and Reactors for the Abatement of Organic Water Pollutants: A Critical Review

Review—Physicochemical Hydrodynamics of Gas Bubbles in Two Phase Electrochemical Systems

Validity of an inertial device for measuring linear and angular velocity in a leg extension exercise

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