Removal of magnetite particles and lubricant contamination from viscous oil by High-Gradient Magnetic Separation technique

Menzel, Katharina; Lindner, Johannes; Nirschl, Hermann

doi:10.1016/j.seppur.2011.07.035

Cited by 44 publications

(16 citation statements)

References 16 publications

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“…From here toward the filter outlet, the deposited particle mass decreased from plate to plate. This observation was in good correspondence to the previously published particle mass distributions in . In Fig.…”

Section: Resultssupporting

confidence: 92%

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Optimizing a rotor‐stator filter matrix for high‐gradient magnetic separation of functionalized magnetic particles

Shaikh

Seibert

Schumann

et al. 2016

Engineering in Life Sciences

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The processing of wines with enzymes is a process chain in which losses of biocatalyst are unavoidable. A promising technique for the minimization of these losses and for the reduction of processing time is the high-gradient magnetic separation in combination with enzymes, which are immobilized onto functionalized magnetic particles. When magnetizable particles are used and magnetic separation is applied to separate these particles from nonmagnetizable particles and solutes, the enzymes can be recycled and used for several production batches. The magnetic filter used in this study had a filter matrix with concentrically stacked circular rotor and stator plates which are arranged in an alternating order. Different geometries of the filter plate notches were examined to optimize the reproducibility of particle retention. In computational fluid dynamic studies, the influence of the notch geometries on the shear rate generation was analyzed for the rinsing procedure. Separation experiments with an optimized geometry of the filter plates were carried out in water and white wine suspensions.

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Section: Resultssupporting

confidence: 92%

“…B). In previous published studies it was presented that the deposited mass of the magnetic particle decreases with the filter length . This means that the majority of magnetic particles were captured in the front part of the filter chamber.…”

Section: Introductionmentioning

confidence: 92%

Optimizing a rotor‐stator filter matrix for high‐gradient magnetic separation of functionalized magnetic particles

Shaikh

Seibert

Schumann

et al. 2016

Engineering in Life Sciences

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“…High gradient magnetic separation (HGMS) is an effective method to recover fine weakly magnetic particles and has been widely applied in mineral processing [1][2][3][4][5], water treatment [6][7][8] and other industrial fields [9][10][11]. In the HGMS system, high permeability magnetic matrices are packed in the uniform magnetic field to induce high magnetic field gradient.…”

Section: Introductionmentioning

confidence: 99%

Effect of Matrix Shape on the Capture of Fine Weakly Magnetic Minerals in High-Gradient Magnetic Separation

Zheng

Wang

2016

IEEE Trans. Magn.

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The magnetic matrix is the core component of the high gradient magnetic separation (HGMS) system and plays a decisive role in the operation of the HGMS system. Cylinder matrix is the most commonly used matrix in HGMS. The matrix shape is a very important parameter influencing the performance of the HGMS system. Special cross-section matrix may have better magnetic characteristics and present better performance in HGMS. However, previous studies of the basic principles of HGMS are basically limited to those employing circular cross-section matrix. Investigations into the magnetic characteristic and performance of special cross-section shape matrix are scarce. In this article, the effect of matrix shape on the capture of fine weakly magnetic minerals in HGMS is investigated with the particle capture model. The matrix shape varies between circular cross-section and elliptic cross-section. The magnetic field and the flow field around the elliptic matrix are analytically calculated. The motion equations of particles around the elliptic matrix under different circumstances are derived and the particle motion trajectories are depicted. The particle capture radius and efficiency of the matrix with shape coefficient L h /L v (ratio of the horizontal axis to vertical axis of the matrix cross-section) ranging from 1/3 to 3 are calculated and compared, providing that the matrix area facing the incoming fluid is the same. The results indicate that there exists the optimal L h /L v value at which the capture radius and efficiency reach the maximum. The optimal L h /L v value increases with the increase of particle size and the decrease of matrix size. Within the L h /L v range of 1/3 to 3, the maximum particle capture efficiency (at the optimal L h /L v or at L h /L v =3) under some arrangements can be much higher than that of the circular matrix (at L h /L v =1), but the increment decreases with the increase of matrix size, the arrangement parameter d/L v and the decrease of particle size. The results provide a theoretical basis for the application of elliptic matrix in HGMS as well as a reference for the development of other novel magnetic matrix in HGMS.

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“…These processes have been applied in some industrial sectors, such as wastewater treatment [10], food processing or steel production for more than 50 years [11]. Nowadays, other uses like removal of contaminants from mineral oils are also being explored [12]. In most cases, the magnetic separators are primarily used in continuous flow processes.…”

Section: Introductionmentioning

confidence: 99%

High-gradient magnetic separation for technical scale protein recovery using low cost magnetic nanoparticles

Fraga-García

Brammen

Wolf

et al. 2015

Separation and Purification Technology

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Removal of magnetite particles and lubricant contamination from viscous oil by High-Gradient Magnetic Separation technique

Cited by 44 publications

References 16 publications

Optimizing a rotor‐stator filter matrix for high‐gradient magnetic separation of functionalized magnetic particles

Optimizing a rotor‐stator filter matrix for high‐gradient magnetic separation of functionalized magnetic particles

Effect of Matrix Shape on the Capture of Fine Weakly Magnetic Minerals in High-Gradient Magnetic Separation

High-gradient magnetic separation for technical scale protein recovery using low cost magnetic nanoparticles

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