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Статті в журналах з теми "High efficiency magnetic separation"

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Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Morkun, Vladimir, Natalia Morkun, Vitalii Tron, Vladimir Golik, and Arkadii Davidkovich. "Increasing efficiency of iron ore magnetic separation by using ultrasonic technologies." E3S Web of Conferences 280 (2021): 08004. http://dx.doi.org/10.1051/e3sconf/202128008004.

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Анотація:

The research is aimed at solving the topical problem of enhancing efficiency of iron ore magnetic separation by applying ultrasonic technologies to identify optimal technological parameters of magnetic separation, improving controlled structural parameters of a magnetic separator and pretreating slurry by highenergy ultrasound to clean the ore material surface from fine-dispersed particles of minerals and slime, as well as disintegrate ore aggregates fed to the magnetic separator. The main tasks involve identifying regularities of influence of slurry pretreatment by high-energy ultrasound on properties of iron ore magnetic separation, determining regulations of improving technological and controlled structural parameters of the magnetic separator using ultrasonic methods, developing and substantiating methods to enhance efficiency of iron ore magnetic separation by applying ultrasonic technologies.

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2

Gu, Yu, Yingwen Xue, and Dawei Zhang. "Adsorption of aniline by magnetic biochar with high magnetic separation efficiency." Environmental Pollutants and Bioavailability 33, no. 1 (January 1, 2021): 66–75. http://dx.doi.org/10.1080/26395940.2021.1920469.

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3

Chen, Lu Zheng, Guo Dong Xu, Shu Ming Wen, Si Qing Liu, and Li Kun Gao. "Effect of Rod Arrangement in Matrix on High Gradient Magnetic Separation Performance." Advanced Materials Research 634-638 (January 2013): 3351–54. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3351.

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The effect of rod arrangement in a rod matrix on high gradient magnetic separation (HGMS) performance has been comparatively investigated through a cyclic pilot-scale centrifugal HGMS separator, with contiguously and orthogonally arranged rod matrixes respectively. The results of investigation indicate that the arrangement of rod elements in the matrix has a distinct effect on the HGMS performance, for relatively low magnetic inductions; beyond the threshold magnetic induction, the magnetic induction dominates that of the arrangement and the importance of the arrangement is significantly weakened even vanished. It was thus concluded that the combinatorial optimization for magnetic elements in the matrix improves the collision efficiency of particles with matrix, and gives a superior performance in a HGMS separator, at a lower energizing consumption.

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4

Harada, Naoto, Shingo Hirano, Masahiro N. Machida, and Takashi Hosokawa. "Impact of magnetic braking on high-mass close binary formation." Monthly Notices of the Royal Astronomical Society 508, no. 3 (October 2, 2021): 3730–47. http://dx.doi.org/10.1093/mnras/stab2780.

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ABSTRACT Combining numerical simulations and analytical modelling, we investigate whether close binary systems form by the effect of magnetic braking. Using magnetohydrodynamics simulations, we calculate the cloud evolution with a sink, for which we do not resolve the binary system or binary orbital motion to realize long-term time integration. Then, we analytically estimate the binary separation using the accreted mass and angular momentum obtained from the simulation. In unmagnetized clouds, wide binary systems with separations of >100 au form, in which the binary separation continues to increase during the main accretion phase. In contrast, close binary systems with separations of <100 au can form in magnetized clouds. Since the efficiency of magnetic braking strongly depends on both the strength and configuration of the magnetic field, they also affect the formation conditions of a close binary. In addition, the protostellar outflow has a negative impact on close binary formation, especially when the rotation axis of the prestellar cloud is aligned with the global magnetic field. The outflow interrupts the accretion of gas with small angular momentum, which is expelled from the cloud, while gas with large angular momentum preferentially falls from the side of the outflow on to the binary system and widens the binary separation. This study shows that a cloud with a magnetic field that is not parallel to the rotation axis is a favourable environment for the formation of close binary systems.

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5

Zhao, Yang, and De Fu Cheng. "The Study on Submersibles Magnetic Separation System." Applied Mechanics and Materials 246-247 (December 2012): 1111–16. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.1111.

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In the traditional magnetic separation in dry conditions of magnetic filter jams caused by the efficiency of the machining decline. In order to solve this problem, filter arrangement in magnetic separation. Jam magnetic filter is success in reducing the through the use of prismatic-shaped filter. In addition, the separation effect of prismatic-shaped filters is added as high as, mesh filters used for high system routine.

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6

Chang, Jeong Ho, Ki Ho Kang, Jinsub Choi, and Young Keun Jeong. "High efficiency protein separation with organosilane assembled silica coated magnetic nanoparticles." Superlattices and Microstructures 44, no. 4-5 (October 2008): 442–48. http://dx.doi.org/10.1016/j.spmi.2007.12.006.

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7

Wen, Hai Tao, Su Qin Li, Chang Quan Zhang, and Wei Wei. "Application of Super Conducting High Gradient Magnetic Separation Technology on Resource Utilization of Low Grade Iron Ore." Advanced Materials Research 968 (June 2014): 168–72. http://dx.doi.org/10.4028/www.scientific.net/amr.968.168.

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Анотація:

Nowadays, steel industry develops rapidly. However, lots of iron ore needed by China’s steel industry are imported from abroad. China’s dependence on foreign iron ore exceeds 70%. As a result, not only have large amounts of foreign currencies been spent but also a potential threat has been posed to the economic development of our country. Therefore, it is necessary for China to serve its economic production with lots of low grade iron ore. Since traditional beneficiation methods can cause serious environmental problems, High gradient magnetic separation(HGMS) is discussed in this paper. It can recycle tailings when disposing of low grade iron ore as well as solve the environmental problems caused by tailings and arising during the production process. Besides, high gradient magnetic separator can also raise the processing efficiency of low grade iron core. Therefore, high-gradient magnetic separation can not only increase economic returns but also protect ecological environment. With the maturity of super-conduction high gradient magnetic separation technology, super-conducting high gradient magnetic separation will produce better production effects.

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8

Ozaki, H., S. Kurinobu, T. Watanabe, S. Nishijima, and T. Sumino. "A new wastewater treatment system recovering magnetically immobilized microorganisms under strong magnetic field." Water Supply 4, no. 1 (February 1, 2004): 47–54. http://dx.doi.org/10.2166/ws.2004.0006.

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A new generation of high gradient magnetic separation (HGMS) has recently received attention again, especially for its applications in the field of water and wastewater treatment. The reason for this attention is that a newly developed superconducting magnet can be used to easily generate a high magnetic field, under which even weakly paramagnetic materials can be separated at high efficiency. We have developed a new wastewater treatment process using magnetic gel particles containing immobilized microorganisms and magnetic particles. The magnetic gel particles are separated and recovered from the effluent in water and wastewater treatment processes, and are then recycled to a bioreactor directly or reused after storing. In this research, a novel type of magnetic separator without a filter matrix was designed for the separation and recovery of magnetic gel particles with different magnetic characteristics. No backwashing is required for this new type of separator. By using the separator, polyethylene glycol (PEG) gel particles with 2% magnetite were continuously separated and recovered from the PEG gel particles with 0.04% magnetite at an efficiency of around 90%. The PEG gel particles containing nitrifying bacteria and magnetic particles were available for the oxidation of ammonia solution at a slightly lower nitrification rate than the PEG gel particles with nitrifying bacteria but without magnetite.

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9

Shah, Gaurav J., and Chang-Jin CJ Kim. "Meniscus-Assisted High-Efficiency Magnetic Collection and Separation for EWOD Droplet Microfluidics." Journal of Microelectromechanical Systems 18, no. 2 (April 2009): 363–75. http://dx.doi.org/10.1109/jmems.2009.2013394.

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10

Zheng, Xiayu, Yuhua Wang, and Dongfang Lu. "Particle capture efficiency of elliptic cylinder matrices for high-gradient magnetic separation." Separation Science and Technology 51, no. 12 (June 21, 2016): 2090–97. http://dx.doi.org/10.1080/01496395.2016.1201113.

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11

Wei, Wei, Su Qin Li, Yun Liu, Wen Bo Wang, and Hai Tao Wen. "Application and Development of Superconducting High Gradient Magnetic Separation on Environmental Protection." Advanced Materials Research 955-959 (June 2014): 2128–32. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2128.

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Superconducting High Gradient Magnetic Separation (HGMS) is widely used with its advantages of high separation efficiency, high processing speed, low-running cost and low-space requirements. The basic theory of superconducting HGMS and the applications of superconducting HGMS on environmental protection in recent years were discussed in this paper. Superconducting HGMS technology has shown a promising future.

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12

Buchmann, Markus, Edgar Schach, Raimon Tolosana-Delgado, Thomas Leißner, Jennifer Astoveza, Marius Kern, Robert Möckel, et al. "Evaluation of Magnetic Separation Efficiency on a Cassiterite-Bearing Skarn Ore by Means of Integrative SEM-Based Image and XRF–XRD Data Analysis." Minerals 8, no. 9 (September 6, 2018): 390. http://dx.doi.org/10.3390/min8090390.

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Анотація:

Image analysis data obtained from scanning electron microscopy provided data for a detailed evaluation of the separation efficiency for various processes involving the beneficiation of particulate materials. A dry magnetic separation by a drum type magnetic separator served as a case study to visualize effects of processing of a skarn ore with a high content of cassiterite as ore mineral (~4 wt%). For this material, iron oxides and silicates are the main gangue mineral groups. Based on the obtained data, partition curves were generated with the help of local regression. From the partition curves, the separation efficiency was evaluated and the relevant particle properties deduced. A detailed analysis of the bias of the quantitative mineralogical data is presented. This bias was monitored and further analyzed in detail. Thorough analysis of feed and products of magnetic separation enabled identification of the most important factors that control losses of cassiterite to the magnetic product, namely the association with iron oxides and particle sizes below ~40 µm. The introduced methodology is a general approach applicable for the optimization of different separation processes and is not limited to the presented case study.

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13

Leong, Sim Siong, Swee Pin Yeap, and JitKang Lim. "Working principle and application of magnetic separation for biomedical diagnostic at high- and low-field gradients." Interface Focus 6, no. 6 (December 6, 2016): 20160048. http://dx.doi.org/10.1098/rsfs.2016.0048.

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Анотація:

Magnetic separation is a versatile technique used in sample preparation for diagnostic purpose. For such application, an external magnetic field is applied to drive the separation of target entity (e.g. bacteria, viruses, parasites and cancer cells) from a complex raw sample in order to ease the subsequent task(s) for disease diagnosis. This separation process not only can be achieved via the utilization of high magnetic field gradient, but also, in most cases, low magnetic field gradient with magnitude less than 100 T m −1 is equally feasible. It is the aim of this review paper to summarize the usage of both high gradient magnetic separation and low gradient magnetic separation (LGMS) techniques in this area of research. It is noteworthy that effectiveness of the magnetic separation process not only determines the outcome of a diagnosis but also directly influences its accuracy as well as sensing time involved. Therefore, understanding the factors that simultaneously influence the efficiency of both magnetic separation process and target detection is necessary. Moreover, for LGMS, there are several important considerations that should be taken into account in order to ensure its successful implementation. Hence, this review paper aims to provide an overview to relate all this crucial information by linking the magnetic separation theory to biomedical diagnostic applications.

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14

Turcu, Rodica, Vlad Socoliuc, Izabell Craciunescu, Anca Petran, Anja Paulus, Matthias Franzreb, Eugeniu Vasile, and Ladislau Vekas. "Magnetic microgels, a promising candidate for enhanced magnetic adsorbent particles in bioseparation: synthesis, physicochemical characterization, and separation performance." Soft Matter 11, no. 5 (2015): 1008–18. http://dx.doi.org/10.1039/c4sm02430c.

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15

Su, Yujie, Bixia Qiu, Cuihua Chang, Xin Li, Mengqi Zhang, Bei Zhou, and Yanjun Yang. "Separation of bovine hemoglobin using novel magnetic molecular imprinted nanoparticles." RSC Advances 8, no. 11 (2018): 6192–99. http://dx.doi.org/10.1039/c7ra12457k.

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Magnetic molecular imprinted nanoparticles (MMIPs), combining the progressiveness of magnetic nanoparticles and surface molecular imprinting technology, have shown the high efficiency and specificity in isolation and enrichment of the target protein.

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16

GUO, Qing-tao, Zhi-qiang CAO, Zhong-tao ZHANG, Ting-ju LI, Jun-ze JIN, and Chun-pyo HONG. "Separation efficiency of alumina particles in Al melt under high frequency magnetic field." Transactions of Nonferrous Metals Society of China 20, no. 1 (January 2010): 153–57. http://dx.doi.org/10.1016/s1003-6326(09)60113-8.

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17

Eisenträger, Almut, Dominic Vella, and Ian M. Griffiths. "Particle capture efficiency in a multi-wire model for high gradient magnetic separation." Applied Physics Letters 105, no. 3 (July 21, 2014): 033508. http://dx.doi.org/10.1063/1.4890965.

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18

Lei, Qin, Xinxin Long, Huanyu Chen, Jihua Tan, Xinming Wang, and Rongzhi Chen. "Facilitating charge transfer via a giant magnetoresistance effect for high-efficiency photocatalytic hydrogen production." Chemical Communications 55, no. 96 (2019): 14478–81. http://dx.doi.org/10.1039/c9cc07812f.

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CoCu alloy magnetic unit was implanted in photocatalytic system to improve photoinduced charge separation efficiency by regulating electron transfer pathway via giant magnetoresistance (GMR) effect, achieving significantly H₂ production activity.

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19

Jin, Tian, Qiang Yang, Chun Meng, Jian Xu, Honglai Liu, Jun Hu, and Hao Ling. "Promoting desulfurization capacity and separation efficiency simultaneously by the novel magnetic Fe3O4@PAA@MOF-199." RSC Adv. 4, no. 79 (2014): 41902–9. http://dx.doi.org/10.1039/c4ra06515h.

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20

Zhang, Qianchun, Qingqing Zhou, Lu Yang, Xingyi Wang, Yuguo Zheng, and Linchun Bao. "Covalently bonded aptamer‐functionalised magnetic mesoporous carbon for high‐efficiency chloramphenicol detection." Journal of Separation Science 43, no. 13 (May 4, 2020): 2610–18. http://dx.doi.org/10.1002/jssc.201901189.

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21

Sedinkina, N. V., O. E. Gorlova, N. V. Gmyzina, and E. Yu Degodya. "Study of a possibility of enrichment of fine-crushed magnetite ore by dry magnetic separation." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 5 (June 20, 2019): 564–71. http://dx.doi.org/10.32339/0135-5910-2019-5-564-571.

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Dry magnetic separation (DMS) enables to separate the non-magnetic fraction of iron ores at the initial stage of their concentration and therefore to decrease cost of their further processing. However, a considerable amount of metal is lost in DMS tails at that. The efficiency of DMS considerably depends on difference between the upper and lower limits of the ore coarseness) ore coarseness range), delivered for concentration. At the Magnitogorsk steel-works crushing and concentration plant No. 5 this range is from 50 mm up to 15 mm. To determine the optimal ore size, delivered to DMS, studies accomplished to determine the specific magnetic susceptibility of the magnetite and the burden for the magnetite ore of Maly Kuibas deposit. After the study of different size iron ore separation, a reasonability of the DMS feed size decreasing down to 30–7 mm shown. A possibility to obtain additional product of 7–0 mm size determined, suitable for sintering. It will enable to decrease the amount of material, delivered for crushing and wet magnetic separation, as well as to decrease expenses for transporting and storage of wet separation tails. Peculiarities of fine magnetite ore processing by DMS in a suspended state considered, optimal parameters of the separator determined and its high efficiency for magnetite ore of 7–0 mm size concentration shown.

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22

GHABRU, S. K., R. J. ST. ARNAUD, and A. R. MERMUT. "USE OF HIGH GRADIENT MAGNETIC SEPARATION IN DETAILED CLAY MINERAL STUDIES." Canadian Journal of Soil Science 68, no. 3 (August 1, 1988): 645–55. http://dx.doi.org/10.4141/cjss88-062.

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High gradient magnetic separation is a simple, inexpensive, nondestructive and rapid means of concentrating iron-bearing minerals to nearly monomineralic levels, particularly those present in undetectable proportions in soil clays. The use of variable magnetic flux density further allows subfractionation of the iron-bearing minerals. Besides iron content, the efficiency of high gradient magnetic separation is highly dependent on the particle size. The stability of suspension, suitable flow rates, contact time and the packing of steel wool are significant factors. The experimental setup used in this study was effective for 2–0.2 μm clays but modifications are necessary to adapt the technique to finer (< 0.2 μm) particle sizes. This resulted in the separation of three distinct mineral groups: (a) smectite, kaolinite, quartz and feldspars, which were entirely associated with the > 1.38 Tesla (T) fraction, suggesting that the smectite and kaolinite present in these soils contain little or no iron; (b) vermiculite, mixed-layer minerals and mica, which were present in all the high gradient magnetic separation fractions; and (c) amphiboles and hydroxy interlayered minerals concentrated only in the < 1.38 T fractions. The contents of hydroxy interlayered minerals and amphiboles increased with decreasing levels of magnetic flux density and concentrated in the < 0.20 T fraction, from which they were further separated into monomineralic separates. A very small proportion of the interlayered mineral present in the total clay had a non-iron-bearing (probably Al-Mg interlayered) counterpart. The iron-bearing vermiculite, mixed-layer minerals (weathering products of biotite) and mica showed different iron contents. Key words: Magnetic separation, iron-bearing minerals, clay mineralogy, X-ray diffraction, scanning electron microscopy

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23

Ohnishi, Noriyuki, Hirotaka Furukawa, Hata Hideyuki, Jing-Ming Wang, Chung-Il An, Eiichiro Fukusaki, Kazunori Kataoka, Katsuhiko Ueno, and Akihiko Kondo. "High-efficiency bioaffinity separation of cells and proteins using novel thermoresponsive biotinylated magnetic nanoparticles." NanoBiotechnology 2, no. 1-2 (March 2006): 43–49. http://dx.doi.org/10.1007/s12030-006-0006-7.

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24

Niu, Haifeng, Zhe Qiang, and Jie Ren. "Durable, magnetic-responsive melamine sponge composite for high efficiency, in situ oil–water separation." Nanotechnology 32, no. 27 (April 14, 2021): 275705. http://dx.doi.org/10.1088/1361-6528/abef2e.

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25

Yu, Liuhua, Gazi Hao, Lei Xiao, Qiushi Yin, Mengting Xia, and Wei Jiang. "Robust magnetic polystyrene foam for high efficiency and removal oil from water surface." Separation and Purification Technology 173 (February 2017): 121–28. http://dx.doi.org/10.1016/j.seppur.2016.09.022.

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26

Shi, Lu, Yuhai Tang, Yi Hao, Gaiyan He, Ruixia Gao, and Xiaoshuang Tang. "Selective adsorption of protein by a high-efficiency Cu2+-cooperated magnetic imprinted nanomaterial." Journal of Separation Science 39, no. 14 (June 27, 2016): 2876–83. http://dx.doi.org/10.1002/jssc.201600413.

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27

Zengin, Adem, Akif Bozkurt, Ismail Hakki Boyaci, Sadan Özcan, Philippe Daniel, Fabienne Lagarde, Alain Gibaud, et al. "Anisotropic core-shell Fe3 O4 @Au magnetic nanoparticles and the effect of the immunomagnetic separation volume on the capture efficiency." Pure and Applied Chemistry 86, no. 6 (June 18, 2014): 967–78. http://dx.doi.org/10.1515/pac-2013-0915.

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Анотація:

AbstractThe aim of this study was to synthesize in high product yield of anisotropic core-shell Fe3 O4@Au magnetic nanoparticles and to investigate the effect of the immunomagnetic separation (IMS) volume on the capture efficiency. For these purposes and for the first time, we synthesized polyhedral magnetic nanoparticles composed of Fe3 O4 core Au shell. To synthesize magnetic gold anisotropic core-shell particles, the seed-mediated synthetic method was carried out. By choosing an appropriate amount of iron particles and growth solution the fine control of the seed-mediated approach is enabled. This led to the high product yield of anisotropic nanoparticles. The magnetic separation of these nanoparticles was easily accomplished, and the resulting nanoparticles were characterized with transmission electron microscopy (TEM), ultraviolet visible spectroscopy (UV–vis), near edge absorption fine structure (NEXAFS) spectroscopy, and X-ray diffraction (XRD). Additionally, the magnetic properties of the nanoparticles were examined. The magnetic nanoparticles (MNPs) were modified with antibody and interacted with Escherichia coli (E. coli). The high capture efficiency between the magnetic nanoparticles and E. coli is evidenced by SEM images. The capture efficiency decreases with an increase of volumes, and the highest capture efficiency was observed for E. coli in an experiment volume of 100 μL for magnetic nanoparticles. The percentage of captured E. coli for polyhedral nanoparticles was found to be approximately 95 % and for spherical nanoparticles 88 %, respectively.

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28

Dong, Zhimin, Zhibin Zhang, Runze Zhou, Yayu Dong, Yuanyuan Wei, Zhijian Zheng, Youqun Wang, Ying Dai, Xiaohong Cao, and Yunhai Liu. "Facile construction of Fe, N and P co-doped carbon spheres by carbothermal strategy for the adsorption and reduction of U(vi)." RSC Advances 10, no. 57 (2020): 34859–68. http://dx.doi.org/10.1039/d0ra06252a.

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Анотація:

The constructed novel magnetic carbon sphere co-doped by N, P, Fe (Fe/P-CN) exhibits high U(vi) removal efficiency, excellent magnetic separation and reusability, evidencing the potential practical applications in environmental remediation.

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29

Teng, Yue, Zhiying Liu, Ke Yao, Wenbin Song, Yongjun Sun, Hailing Wang, and Yanhua Xu. "Preparation of Attapulgite/CoFe2O4 Magnetic Composites for Efficient Adsorption of Tannic Acid from Aqueous Solution." International Journal of Environmental Research and Public Health 16, no. 12 (June 20, 2019): 2187. http://dx.doi.org/10.3390/ijerph16122187.

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The use of attapulgite (ATP)-based materials for adsorption of pollutants from water and wastewater has received growing attention. However, recovering ATP-based adsorbents remains a challenge. In this study, a magnetic adsorbent ATP/CoFe2O4 with high tannic acid (TA) adsorptive capacity was fabricated via a facile co-precipitation approach and was well characterized. The loaded CoFe2O4 particles were embedded into the adsorbent surfaces to allow magnetic separability. For this material, its TA adsorption kinetics, isotherm behavior, and magnetic separation efficiency are reported. The developed magnetic composites had rapid sorption kinetics of 3 h, high sorption capacity of 109.36 mg/g, and good magnetic separation efficiency of 80%. The used ATP/CoFe2O4 was successfully regenerated by NaOH and reused five times without a substantial reduction in TA removal and magnetic performance. Intermolecular hydrogen bonding formation and surface complexation were identified as the sorption mechanisms of TA by ATP/CoFe2O4.

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30

Faraghat, Shabnam A., Kai F. Hoettges, Max K. Steinbach, Daan R. van der Veen, William J. Brackenbury, Erin A. Henslee, Fatima H. Labeed, and Michael P. Hughes. "High-throughput, low-loss, low-cost, and label-free cell separation using electrophysiology-activated cell enrichment." Proceedings of the National Academy of Sciences 114, no. 18 (April 13, 2017): 4591–96. http://dx.doi.org/10.1073/pnas.1700773114.

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Currently, cell separation occurs almost exclusively by density gradient methods and by fluorescence- and magnetic-activated cell sorting (FACS/MACS). These variously suffer from lack of specificity, high cell loss, use of labels, and high capital/operating cost. We present a dielectrophoresis (DEP)-based cell-separation method, using 3D electrodes on a low-cost disposable chip; one cell type is allowed to pass through the chip whereas the other is retained and subsequently recovered. The method advances usability and throughput of DEP separation by orders of magnitude in throughput, efficiency, purity, recovery (cells arriving in the correct output fraction), cell losses (those which are unaccounted for at the end of the separation), and cost. The system was evaluated using three example separations: live and dead yeast; human cancer cells/red blood cells; and rodent fibroblasts/red blood cells. A single-pass protocol can enrich cells with cell recovery of up to 91.3% at over 300,000 cells per second with >3% cell loss. A two-pass protocol can process 300,000,000 cells in under 30 min, with cell recovery of up to 96.4% and cell losses below 5%, an effective processing rate >160,000 cells per second. A three-step protocol is shown to be effective for removal of 99.1% of RBCs spiked with 1% cancer cells while maintaining a processing rate of ∼170,000 cells per second. Furthermore, the self-contained and low-cost nature of the separator device means that it has potential application in low-contamination applications such as cell therapies, where good manufacturing practice compatibility is of paramount importance.

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31

Li, Chang Sheng, He Zhang, and Xiao Hua Jiang. "Experimental Research on the Influence of Transmission Parameters on the Transmission Performance of Magnetic Resonance Wireless Power Transmission Systems." Applied Mechanics and Materials 551 (May 2014): 393–98. http://dx.doi.org/10.4028/www.scientific.net/amm.551.393.

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Magnetic resonance wireless power transmission uses resonance strong coupling between the transmission and receiving terminals to realize a non-contact efficient supply of energy over large distance. The transmission power, efficiency and distance are confirmed by comprehensive function of the transmission parameters. By taking experimental means, the influence laws of loop transmission parameters, such as separation between coils, coil size, etc., on the transmission performance are studied in this paper. The experimental results show that the power high-efficiency and high-quality transmission does not depend on the large coil loop coupling coefficient and transmission power and efficiency may increase firstly and then decline as the separation between coils increases. The transmission performance can be optimized by increasing the coils diameter or wire diameter, and moreover, transmission systems with a high resonance frequency can produce high power and efficiency transmission over short distances.

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Li, Yanjun, Qi Zhang, Shuai Yuan, and Heng Yin. "High-efficiency extraction of iron from early iron tailings via the suspension roasting-magnetic separation." Powder Technology 379 (February 2021): 466–77. http://dx.doi.org/10.1016/j.powtec.2020.10.005.

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Wang, Wenjing, Fengzhen Zhou, Xiyao Cheng, Zhengding Su, and Huiling Guo. "High‐efficiency Ni 2+ ‐NTA/PAA magnetic beads with specific separation on His‐tagged protein." IET Nanobiotechnology 14, no. 1 (November 12, 2019): 67–72. http://dx.doi.org/10.1049/iet-nbt.2019.0271.

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Dahe, Xiong. "SLon Magnetic Separators Applied in the Ilmenite Processing Industry." Physical Separation in Science and Engineering 13, no. 3-4 (January 1, 2004): 119–26. http://dx.doi.org/10.1080/14786470412331316081.

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SLon vertical ring pulsating high gradient magnetic separators possess the advantages of a large beneficial ratio, high processing efficiency, strong adaptability, high resistance of the magnetic matrix to clogging, and high equipment availability. In recent years, these separators have been successfully applied to the beneficiation of ilmenite ores at the Panzhihua Ilmenite concentrator, and several other ilmenite processing plants, promoting the rapid development of the ilmenite industry in China.

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Mehrabi, Novin, Arvid Masud, Moyosore Afolabi, Jinwoo Hwang, Gabriel A. Calderon Ortiz, and Nirupam Aich. "Magnetic graphene oxide-nano zero valent iron (GO–nZVI) nanohybrids synthesized using biocompatible cross-linkers for methylene blue removal." RSC Advances 9, no. 2 (2019): 963–73. http://dx.doi.org/10.1039/c8ra08386j.

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Zhong, Yuyu, Chen Chen, Si Liu, Chengyu Lu, Dong Liu, Ying Pan, Hiroshi Sakiyama, Mohd Muddassir, and Jianqiang Liu. "A new magnetic adsorbent of eggshell-zeolitic imidazolate framework for highly efficient removal of norfloxacin." Dalton Transactions 50, no. 48 (2021): 18016–26. http://dx.doi.org/10.1039/d1dt03020e.

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A new Fe3O4-ES/ZIF-8 was synthesized via a facile method and was used to remove the norfloxacin with a high efficiency of 80.13%. The magnetic nature of the adsorbent caused to an easy separation from aqueous solution.

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Lee, Jusin, Onejae Sul, and Seung-Beck Lee. "Enrichment of Circulating Tumor Cells from Whole Blood Using a Microfluidic Device for Sequential Physical and Magnetophoretic Separations." Micromachines 11, no. 5 (May 6, 2020): 481. http://dx.doi.org/10.3390/mi11050481.

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Based on their high clinical potential, the isolation and enrichment of rare circulating tumor cells (CTCs) from peripheral blood cells has been widely investigated. There have been technical challenges with CTC separation methods using solely cancer-specific surface molecules or just using physical properties of CTCs, as they may suffer from heterogeneity or lack of specificity from overlapping physical characteristics with leukocytes. Here, we integrated an immunomagnetic-based negative enrichment method that utilizes magnetic beads attached to leukocyte-specific surface antigens, with a physical separation method that utilizes the distinct size and deformability of CTCs. By manipulating the pressure distribution throughout the device and balancing the drag and magnetic forces acting on the magnetically labeled white blood cells (WBCs), the sequential physical and magnetophoretic separations were optimized to isolate intact cancer cells, regardless of heterogeneity from whole blood. Using a breast cancer cell line in whole blood, we achieved 100% separation efficiency for cancer cells and an average of 97.2% for WBCs, which resulted in a 93.3% average separation purity. The experimental results demonstrated that our microfluidic device can be a promising candidate for liquid biopsy and can be a vital tool for aiding future cancer research.

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Kim, Y. G., J. B. Song, D. G. Yang, J. S. Lee, Y. J. Park, D. H. Kang, and H. G. Lee. "Effects of filter shapes on the capture efficiency of a superconducting high-gradient magnetic separation system." Superconductor Science and Technology 26, no. 8 (June 10, 2013): 085002. http://dx.doi.org/10.1088/0953-2048/26/8/085002.

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Wu, XinYu, HuiYing Wu, and DingHua Hu. "High-efficiency magnetophoretic separation based on synergy of magnetic force field and flow field in microchannels." Science China Technological Sciences 54, no. 12 (October 27, 2011): 3311–19. http://dx.doi.org/10.1007/s11431-011-4593-8.

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Qin, Wei Wei, Martin E. Silvestre, and Matthias Franzreb. "Magnetic Microparticles@UiO-67 Core-Shell Composites as a Novel Stationary Phase for High Performance Liquid Chromatography." Applied Mechanics and Materials 703 (December 2014): 73–76. http://dx.doi.org/10.4028/www.scientific.net/amm.703.73.

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Metal-organic framework UiO-67 was explored as a novel stationary phase for high performance liquid chromatography (HPLC). UiO-67 was, for the first time, homogeneously coated on carboxyl functionalized magnetic silica microparticles at low temperature (45 °C) by using a recently introduced liquid phase epitaxy (LPE) process. HPLC runs using the synthesized core-shell microparticles as stationary phase showed baseline separation for three phenol derivatives, applying gradient elution using acetonitrile and water as mobile phase. It also showed that UiO-67 has the largest affinity for 2,6-dichlorophenol among the phenol derivatives tested. The comparison of core-shell microparticles with 20 and 55 layers, respectively, of UiO-67 grown on the magnetic silica core proof that the UiO-67 shell determines separation behavior. Therefore, the use of UiO-67 core-shell microparticles as a stationary phase combines the advantages of a thin, homogenous MOF shell showing fast kinetics and good separation efficiency with the advantages of spherical silica microparticle cores offering high mechanical robustness and moderate pressure drop.

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Hooriabad Saboor, Fahimeh, Samaneh Hadian-Ghazvini, and Mohammad Torkashvand. "Microplastics in Aquatic Environments: Recent Advances in Separation Techniques." Periodica Polytechnica Chemical Engineering 66, no. 2 (February 15, 2022): 167–81. http://dx.doi.org/10.3311/ppch.18930.

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Separation and removal of microplastic pollution from aquatic environments as a global environmental issue is classified as one of the major concerns in both water and wastewater treatment plants. Microplastics as polymeric particles less than 5 mm in at least one dimension are found with different shapes, chemical compositions, and sizes in soil, water, and sediments. Conventional treatment methods for organic separation have shown high removal efficiency for microplastics, while the separation of small microplastic particles, mainly less than 100 µm, in wastewater treatment plants is particularly challenging. This review aims to review the principle and application of different physical and chemical methods for the separation and removal of microplastic particles from aquatic environments, especially in water treatments process, with emphasis on some alternative and emerging separation methods. Advantages and disadvantages of conventional separation techniques such as clarification, sedimentation, floatation, activated sludge, sieving, filtration, and density separation are discussed. The advanced separation methods can be integrated with conventional techniques or utilize as a separate step for separating small microplastic particles. These advanced microplastic separation methods include membrane bioreactor, magnetic separation, micromachines, and degradation-based methods such as electrocatalysis, photocatalysis, biodegradation, and thermal degradation.

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42

Qiaofeng Tan, 谭峭峰, 张琰 Yan Zhang, and 金国藩 Guofan Jin. "High-efficiency spatial color separation method based on fractional Talbot ef fect." Chinese Optics Letters 7, no. 11 (2009): 975–77. http://dx.doi.org/10.3788/col20090711.0975.

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43

Fang, Jimin, and Bo Wang. "Metasurface T-type high-efficiency transmission grating for 7-channel beam separation." Optik 231 (April 2021): 166391. http://dx.doi.org/10.1016/j.ijleo.2021.166391.

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NOU, XIANGWU, TERRANCE M. ARTHUR, JOSEPH M. BOSILEVAC, DAYNA M. BRICHTA-HARHAY, MICHAEL N. GUERINI, NORASAK KALCHAYANAND, and MOHAMMAD KOOHMARAIE. "Improvement of Immunomagnetic Separation for Escherichia coli O157:H7 Detection by the PickPen Magnetic Particle Separation Device†." Journal of Food Protection 69, no. 12 (December 1, 2006): 2870–74. http://dx.doi.org/10.4315/0362-028x-69.12.2870.

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Conventional immunomagnetic separation (IMS) procedures, which use an external magnetic source to capture magnetic particles against the side of a test tube, are labor-intensive and can have poor sensitivity for the target organism because of high background microflora that is not effectively washed away during the IMS process. This report compares the conventional IMS procedure to a new IMS procedure with an intrasolution magnetic particle transfer device, the PickPen. The IMS target for the majority of these studies is Escherichia coli O157:H7 in various types of samples, including cattle feces, hides, carcasses, and ground beef. Comparison of the two IMS methods showed a significant difference (P < 0.05) in the efficiency of detecting E. coli O157:H7 from cattle carcass surface, cattle hide, and cattle fecal samples. No significant improvement (P > 0.05) in E. coli O157:H7 detection was observed when the PickPen IMS procedure was used to isolate this pathogen from ground beef samples. Use of the PickPen IMS greatly increases the throughput of the IMS procedure and may be more compatible with various emerging technologies for pathogen detection. In addition, the efficacy of sequential IMS for multiple pathogens is reported herein.

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Guan, Xiaotong, Jiayi Zhang, Wenjie Fu, Dun Lu, Tongbin Yang, Yang Yan, and Xuesong Yuan. "Frequency Tuning Characteristics of a High-Power Sub-THz Gyrotron with Quasi-Optical Cavity." Electronics 10, no. 5 (February 24, 2021): 526. http://dx.doi.org/10.3390/electronics10050526.

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Motivated by some emerging high-frequency applications, a high-power frequency-tunable sub-THz quasi-optical gyrotron cavity based on a confocal waveguide is designed in this paper. The frequency tuning characteristics of different approaches, including magnetic field tuning, mirror separation adjustment, and hybrid tuning, have been investigated by particle-in-cell (PIC) simulation. Results predict that it is possible to realize a smooth continuous frequency tuning band with an extraordinarily broad bandwidth of 41.55 GHz, corresponding to a relative bandwidth of 18.7% to the center frequency of 0.22 THz. The frequency tunability is provided by varying the separation distance between two mirrors and correspondingly adjusting the external magnetic field. During the frequency tuning, the output power remains higher than 20 kW, which corresponds to an interaction efficiency of 10%. Providing great advantages in terms of broad bandwidth, smooth tuning, and high power, this research may be conducive to the development of high-power frequency-tunable THz gyrotron oscillators.

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46

Waseem, Shahid, Rachanee Udomsangpetch, and Sebastian C. Bhakdi. "Buffer-Optimized High Gradient Magnetic Separation: Target Cell Capture Efficiency is Predicted by Linear Bead-Capture Theory." Journal of Magnetics 21, no. 1 (March 31, 2016): 125–32. http://dx.doi.org/10.4283/jmag.2016.21.1.125.

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47

Yu, Chuanming, Jin’e Jiang, Yeyuan Liu, Ke Liu, Ziqing Situ, Lifen Tian, Wenjing Luo, Pengzhi Hong, and Yong Li. "Facile fabrication of compressible, magnetic and superhydrophobic poly(DVB-MMA) sponge for high-efficiency oil–water separation." Journal of Materials Science 56, no. 4 (October 28, 2020): 3111–26. http://dx.doi.org/10.1007/s10853-020-05471-z.

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48

Brechmann, Nils A., Märta Jansson, Alice Hägg, Ryan Hicks, Johan Hyllner, Kristofer Eriksson, and Véronique Chotteau. "Proof-of-Concept of a Novel Cell Separation Technology Using Magnetic Agarose-Based Beads." Magnetochemistry 8, no. 3 (March 10, 2022): 34. http://dx.doi.org/10.3390/magnetochemistry8030034.

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The safety of the cells used for Advanced Therapy Medicinal Products is crucial for patients. Reliable methods for the cell purification are very important for the commercialization of those new therapies. With the large production scale envisioned for commercialization, the cell isolation methods need to be efficient, robust, operationally simple and generic while ensuring cell biological functionality and safety. In this study, we used high magnetized magnetic agarose-based beads conjugated with protein A to develop a new method for cell separation. A high separation efficiency of 91% yield and consistent isolation performances were demonstrated using population mixtures of human mesenchymal stem cells and HER2+ SKBR3 cells (80:20, 70:30 and 30:70). Additionally, high robustness against mechanical stress and minimal unspecific binding obtained with the protein A base conjugated magnetic beads were significant advantages in comparison with the same magnetic microparticles where the antibodies were covalently conjugated. This study provided insights on features of large high magnetized microparticles, which is promising for the large-scale application of cell purification.

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Wang, Y., F. W. Wang, M. F. Jia, L. N. Huang, Y. Q. He, and S. Q. Dong. "Rapid Extraction of Yam Peel Total Flavonoids in A Cholinium-Based Magnetic Ionic Liquid Aqueous Biphasic System." Nature Environment and Pollution Technology 21, no. 1 (March 6, 2022): 349–54. http://dx.doi.org/10.46488/nept.2022.v21i01.042.

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In this study, for the first time, a magnetic ionic liquid-based aqueous biphasic system (MIL-ABS) was developed to extract total flavonoids from crude extracts of yam (Dioscorea alata L.) peel. The effect of various conditions on the separation behavior was systematically examined and optimized. A relatively high extraction efficiency (96.4%) and partition coefficient (K = 33.2) for total flavonoids could be achieved. MI-ABS not only has the advantage of being able to extract quickly in the absence of an organic solvent, but it also responds to a simple external magnetic field. This work has the potential to be a useful reference for practical enrichment or separation of active ingredients.

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Yu, Mingguang, Qing Wang, Wenxin Yang, Yonghang Xu, Min Zhang, Qianjun Deng, and Guang Liu. "Facile Fabrication of Magnetic, Durable and Superhydrophobic Cotton for Efficient Oil/Water Separation." Polymers 11, no. 3 (March 7, 2019): 442. http://dx.doi.org/10.3390/polym11030442.

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In this paper, we present a facile and efficient strategy for the fabrication of magnetic, durable, and superhydrophobic cotton for oil/water separation. The superhydrophobic cotton functionalized with Fe3O4 magnetic nanoparticles was prepared via the in situ coprecipitation of Fe2+/Fe3+ ions under ammonia solution on cotton fabrics using polyvinylpyrrolidone (PVP) as a coupling agent and hydrophobic treatment with tridecafluorooctyl triethoxysilane (FAS) in sequence. The as-prepared cotton demonstrated excellent superhydrophobicity with a water contact angle of 155.6° ± 1.2° and good magnetic responsiveness. Under the control of the external magnetic field, the cotton fabrics could be easily controlled to absorb the oil from water as oil absorbents, showing high oil/water separation efficiency, even in hot water. Moreover, the cotton demonstrated remarkable mechanical durable properties, being strongly friction-resistant against sandpaper and finger wipe, while maintaining its water repellency. This study developed a novel and efficient strategy for the construction of magnetic, durable, and superhydrophobic biomass-based adsorbent for oil/water separation, which can be easily scaled up for practical oil absorption.

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