Relevant bibliographies by topics / Particles Separation

Academic literature on the topic 'Particles Separation'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Particles Separation"

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Duan, Chenlong, Cheng Sheng, Lingling Wu, Yuemin Zhao, Jinfeng He, and Enhui Zhou. "Separation and Recovery of Fine Particles from Waste Circuit Boards Using an Inflatable Tapered Diameter Separation Bed." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/843579.

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Recovering particle materials from discarded printed circuit boards can enhance resource recycling and reduce environmental pollution. Efficiently physically separating and recovering fine metal particles (−0.5 mm) from the circuit boards are a key recycling challenge. To do this, a new type of separator, an inflatable tapered diameter separation bed, was developed to study particle motion and separation mechanisms in the bed’s fluid flow field. For 0.5–0.25 mm circuit board particles, metal recovery rates ranged from 87.56 to 94.17%, and separation efficiencies ranged from 87.71 to 94.20%. For 0.25–0.125 mm particles, metal recovery rates ranged from 84.76 to 91.97%, and separation efficiencies ranged from 84.74 to 91.86%. For superfine products (−0.125 mm), metal recovery rates ranged from 73.11 to 83.04%, and separation efficiencies ranged from 73.00 to 83.14%. This research showed that the inflatable tapered diameter separation bed achieved efficient particle separation and can be used to recover fine particles under a wide range of operational conditions. The bed offers a new mechanical technology to recycle valuable materials from discarded printed circuit boards, reducing environmental pollution.
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Cieśla, Antoni, Wojciech Kraszewski, Mikołaj Skowron, Agnieszka Surowiak, and Przemysław Syrek. "Application of electrodynamic drum separator to electronic wastes separation." Gospodarka Surowcami Mineralnymi 32, no. 1 (March 1, 2016): 155–74. http://dx.doi.org/10.1515/gospo-2016-0007.

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AbstractStatic electric fields are used, among others, in technological processes such as electric separation. Electrodynamic separation is a process of separating two or more solid phases of various physical properties by electric field forces. The advantage of electrodynamic separation is possibility of obtaining separation of individual components in dry conditions. This eliminates many operations such as thickening, dewatering, hydrotransportation, additional drying which cause higher energy consumption and higher separation process costs. Efficiency of beneficiation depends on many factors such as: electric properties of feed components, feed particle size distribution, drum rotary speed, electric field intensity in working space of separator, configuration of electrodes or surrounding conditions.The paper presents the working of high-voltage drum separator. The analysis of electric field distribution in separator working space was done. Additionally, distribution of forces acting on particles of dielectric and conductive properties was examined, trajectories of charged particles movement were presented too. The laboratory investigations of electronic wastes were performed in two particle fractions: 0.25–0.5 mm and 0–0.25 mm. It was observed that as a result of selective charging of particles they separate according to surface ability to electrifying what allows to obtain selective separation of components being so-called electronic wastes. The application of electrodynamic drum separator allows to separate such elements as Ti, Cu, Fe, Pb, Sn from plastics occurring in electronic wastes.
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Li, Xiaohong, Junping Duan, Zeng Qu, Jiayun Wang, Miaomiao Ji, and Binzhen Zhang. "Continuous Particle Separation Driven by 3D Ag-PDMS Electrodes with Dielectric Electrophoretic Force Coupled with Inertia Force." Micromachines 13, no. 1 (January 12, 2022): 117. http://dx.doi.org/10.3390/mi13010117.

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Cell separation has become @important in biological and medical applications. Dielectrophoresis (DEP) is widely used due to the advantages it offers, such as the lack of a requirement for biological markers and the fact that it involves no damage to cells or particles. This study aimed to report a novel approach combining 3D sidewall electrodes and contraction/expansion (CEA) structures to separate three kinds of particles with different sizes or dielectric properties continuously. The separation was achieved through the interaction between electrophoretic forces and inertia forces. The CEA channel was capable of sorting particles with different sizes due to inertial forces, and also enhanced the nonuniformity of the electric field. The 3D electrodes generated a non-uniform electric field at the same height as the channels, which increased the action range of the DEP force. Finite element simulations using the commercial software, COMSOL Multiphysics 5.4, were performed to determine the flow field distributions, electric field distributions, and particle trajectories. The separation experiments were assessed by separating 4 µm polystyrene (PS) particles from 20 µm PS particles at different flow rates by experiencing positive and negative DEP. Subsequently, the sorting performances of the 4 µm PS particles, 20 µm PS particles, and 4 µm silica particles with different solution conductivities were observed. Both the numerical simulations and the practical particle separation displayed high separating efficiency (separation of 4 µm PS particles, 94.2%; separation of 20 µm PS particles, 92.1%; separation of 4 µm Silica particles, 95.3%). The proposed approach is expected to open a new approach to cell sorting and separating.
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Tang, Zhaojia, Liming Yu, Fenghua Wang, Na Li, Liuhong Chang, and Ningbo Cui. "Effect of Particle Size and Shape on Separation in a Hydrocyclone." Water 11, no. 1 (December 21, 2018): 16. http://dx.doi.org/10.3390/w11010016.

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Given the complex separation mechanisms of the particulate mixture in a hydrocyclone and the uncertain effects of particle size and shape on separation, this study explored the influence of the maximum projected area of particles on the separation effect as well as single and mixed separations based on CFD–DEM (Computational Fluid Dynamics and Discrete Element Method) coupling and experimental test methods. The results showed that spherical particles flowed out more easily from the downstream as their sizes increased. Furthermore, with the enlargement of maximum projected area, the running space of the particles with the same volume got closer to the upward flow and particles tended to be separated from the upstream. The axial velocity of the combined separation of 60 µm particles and 120 µm particles increased by 25.74% compared with that of single separation of 60 µm particles near the transition section from a cylinder to a cone. The concentration of 60 µm particles near the running space of 120 µm particles increased by 20.73% and those separated from the downstream increased by 4.1%. This study showed the influence of particle size and maximum projected area on the separation effect and the separation mechanism of mixed sand particles in a hydrocyclone, thereby providing a theoretical basis for later studies on the effect of particle size and shape on sedimentation under the cyclone action in a hydrocyclone.
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Li, Xiaohong, Junping Duan, Jiayun Wang, Zeng Qu, Miaomiao Ji, and BinZhen Zhang. "Continuous particle separation of microfluidic chip with integrated inertial separation and dielectrophoresis separation." AIP Advances 12, no. 3 (March 1, 2022): 035148. http://dx.doi.org/10.1063/5.0075823.

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Particle separation is essential in many microfluidic systems such as biomedical analysis and chemical reactions. This study aims to report a microfluidic separation device combining dielectrophoresis force and inertial force to separate particles continuously. Most particles were separated by inertial force via passing through the contraction and expansion channel and then deviated into different outlets via interdigital electrodes. Numerical simulations using the software COMSOL Multiphysics 5.4 were performed to investigate the effects of flow rate and electric field distribution on particles. The separation efficiency was assessed by separating 4 µm polystyrene spheres (PS) from 20 µm PS microspheres at various flow rates. The experimental results showed that the separation efficiency was more than 95%. This microfluidic chip is expected to be applied to cell sorting and biomedicine.
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Tan, Jia Hao, Douglas Kum Tien Tong, and Edwin Chin Yau Chung. "Design and Analysis of a Separator for Aluminium Dust Particle Collection." MATEC Web of Conferences 335 (2021): 03013. http://dx.doi.org/10.1051/matecconf/202133503013.

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Cyclone separators are considered one of the most common and widely used method of separating solid particles from fluids. The focus of this paper was to design a separator that could effectively improve the air quality of an industrial working environment by considering factors such as the nature of the particles and the restrictions on the device such as size and operating condition. To do so, a sample of the dust sample was studied to determine the characteristics of the aluminum dust. An initial separator model which satisfied the separation condition was developed, and a second model was developed with the goal of optimizing and reducing the overall size of the separator. All models developed were subjected to CFD simulations to analyze the flow patterns, separation rate at various particle diameters as well as comparing against the theoretical predicted values. The simulation results showed how the change in various parameters improved the separation efficiency. The total height of the model was approximately 20% smaller than the initial proposed design to fit into the manufacturer’s workbench while the separation efficiencies improved by an average of 5% to 10% across various particle sizes. The results obtained indicated that the efficiency of the particle collection is dependent on the area of the barrel inlet of the separator and the depth of the vortex finder.
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Yu, Xinzhi, Xuesong Jiang, Haiyang Gu, and Fei Shen. "DEM Study of the Motion Characteristics of Rice Particles in the Indented Cylinder Separator." Sensors 23, no. 1 (December 27, 2022): 285. http://dx.doi.org/10.3390/s23010285.

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The precise separation of rice particles is an important step in rice processing. In this paper, discrete element simulations of the motion of rice particles of different integrity in an indented cylinder separator were carried out using numerical simulation methods. The effects of single factors (cylinder rotation rate, cylinder axial inclination angle, and collection trough inclination angle) on the motion trajectories of particles are investigated and the probability distribution functions of particles are obtained. The statistical method of Kullback-Leibler divergence is used to quantitatively evaluate the differences in the probability distribution functions of the escape angles of particles of different degrees of integrity. The purpose of this paper is to determine the optimum parameters for an indent cylinder separator by understanding the material cylinder separating process from particle scale and to provide a basis for the numerical design of a grain particle cylinder separators.
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Li, Xudong, Yuhua Wang, Dongfang Lu, and Xiayu Zheng. "Influence of Separation Angle on the Dry Pneumatic Magnetic Separation." Minerals 12, no. 10 (September 22, 2022): 1192. http://dx.doi.org/10.3390/min12101192.

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To enhance dry magnetic separation of fine-grained materials, our research team developed the pneumatic drum magnetic separator (PDMS), an airflow-aided magnetic separator. Different positions at the separation surface of PDMS have varied separation angles, so particles at different positions may be subjected to varying composite forces, resulting in a mismatch between airflow velocity and magnetic field intensity. However, because the separation process of PDMS is continuous and the separation of particles at a certain position is instantaneous, the separation performance of PDMS at a specific separation angle cannot be investigated. To evaluate optimal operating features at different separation angles, a laboratory dry pneumatic flat magnetic separator (DPFMS) was manufactured, which also makes the airflow pass through the separation plane in the opposite direction to the magnetic force. The separation performance of PDMS was revealed by separation tests for −0.15 + 0.074 mm artificial mixed ore with 0–0.6 m/s airflow on DPFMS at various separation angles. At separation angles of 70° and 90°, the separation efficiency increases with an increase in airflow velocity from 16.68% and 33.09% to 77.72% and 76.54%, respectively; at separation angles of 110°, the separation efficiency increases initially from 89.53% to 90.69%, then decreases to 88.22% and keeps decreasing. The synergistic relationship between airflow drag, magnetic force and gravity were investigated by analyzing the composite force and the motion trajectory of a single particle. The results show that the proper airflow velocity aids in enhancing the distinctions between magnetite and quartz particles in resultant force and movement. However, throughout a wide range of air velocity, while the airflow can improve magnetite and quartz separation efficiency of at small separation angles, it may diminish the separation efficiency at large separation angles.
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Yamasaki, Haruhiko, Hiroyuki Wakimoto, Takeshi Kamimura, Kazuhiro Hattori, Petter Nekså, and Hiroshi Yamaguchi. "Visualization and Measurement of Swirling Flow of Dry Ice Particles in Cyclone Separator-Sublimator." Energies 15, no. 11 (June 3, 2022): 4128. http://dx.doi.org/10.3390/en15114128.

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The dry ice sublimation process of carbon dioxide (CO2) is a unique, environmentally friendly technology that can achieve a temperature of −56 °C or lower, which is a triple point of CO2 in CO2 refrigeration systems. In this study, a cyclone separator-evaporator was proposed to separate dry ice particles in an evaporator. As an initial step before introducing the cyclone separator-evaporator into an actual refrigeration system, a prototype cyclone separator-evaporator was constructed to visualize dry ice particles in a separation chamber. A high-speed camera was used to visualize the non-uniform flow of dry ice particles that repeatedly coalescence and collision in a swirl section. Consequently, the dry ice particle size and the circumferential and axial velocities of dry ice were measured. The results show that the equivalent diameter of the most abundant dry ice particles in the cyclone separation chamber is 2.0 mm. As the inner diameter of the separation section decreases, dry ice particles coalesce and grow from an equivalent diameter of 4 mm to a maximum of 40 mm. In addition, the comparison of the experimental and simulation results shows that the drag force due to CO2 gas flow is dominant in the circumferential velocity of dry ice particles.
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Landauer, Johann, and Petra Foerst. "Influence of Particle Charge and Size Distribution on Triboelectric Separation—New Evidence Revealed by In Situ Particle Size Measurements." Processes 7, no. 6 (June 19, 2019): 381. http://dx.doi.org/10.3390/pr7060381.

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Triboelectric charging is a potentially suitable tool for separating fine dry powders, but the charging process is not yet completely understood. Although physical descriptions of triboelectric charging have been proposed, these proposals generally assume the standard conditions of particles and surfaces without considering dispersity. To better understand the influence of particle charge on particle size distribution, we determined the in situ particle size in a protein–starch mixture injected into a separation chamber. The particle size distribution of the mixture was determined near the electrodes at different distances from the separation chamber inlet. The particle size decreased along both electrodes, indicating a higher protein than starch content near the electrodes. Moreover, the height distribution of the powder deposition and protein content along the electrodes were determined in further experiments, and the minimum charge of a particle that ensures its separation in a given region of the separation chamber was determined in a computational fluid dynamics simulation. According to the results, the charge on the particles is distributed and apparently independent of particle size.
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Dissertations / Theses on the topic "Particles Separation"

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Preuss, Frida, Julia Asp, Sofia Larsson, and Stephanie Kylington. "Separation of Nanoporous Silica Particles." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277106.

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In this study a sample of particles in a size region of 0.05-10 μm were run through a centrifugation process with the ambition to make it monodisperse. The product requirements were stated as follows, particles within the size range of 2 to 3.8 μm should be isolated and separated from the sample with a D90/D10 < 1.4 where the D90/D50/D10 values should be approximately 3.8 μm/2.5 μm/2 μm. It was found that two layers of sucrose with a 50/50 volume distribution of 45w% sucrose solution and 60w% sucrose solution respectively, was the most efficient density gradient arrangement for separation of this particular sample. The optimal time and RPM combination was found to be 5 min 3000 RPM with a fast acceleration and slower deceleration, ratio 9:6. Two centrifugation rounds on the same sample improved D90/D10 drastically. The effect of centrifugation rounds on D90/D10 was not investigated further than 3 rounds, however this would be a good starting point for further studies. The upscaled test runs indicated a positive result, i.e. the yields with respect to both mass and purity were reproducible. It is worth mentioning that the upscale was only in the volume, sample load volume and surface area factors. The gradient height or particle travel distance remained the same.
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Yunus, Md Nurul Amziah. "Continuous dielectrophoretic separation of colloidal particles." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/79370/.

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Dielectrophoresis (DEP) is a technique that can be used to separate particle at microscale. It is of particular interest because it is a non-invasive, non-destructive and non-contact technique, which ensures that sample composition remains the same with only the particles being separated. On the microscale, DEP has been used to separate viable and non-viable cells, and cells with different dielectric properties, with the aid of a range of miniaturised, microfabricated devices. However, DEP at the nano-scale is a novel area and is still under research. Miniaturisation of devices in general has been an ongoing trend to improve the performance of analytical tools. In particular, processes for micro-device fabrication using dry film resist have been studied in order to reduce size, cost, sophisticated hardware usage and power consumption. This thesis presents an investigation into the novel design of dielectrophoretic particle separator, using rapid dry film resist methods to construct an integrated device. The development of analysis software for detecting particle movement in videos of experiments is presented, along with its use as a data analysis tool for determining particle position in the array. Characterisation measurements have been performed for a range of experimental parameters demonstrating the variability and behaviour of the device. Separation experiments were performed using test micron and submicron particles over a wide range of applied field frequencies, confirming the theoretical predictions and demonstrate the standard of separation efficiency. Preliminary investigations of other application of the device to larger particle and integrating micropump technology are also presented.
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Das, Subhankar. "Electrostatic charging and separation of fine particles." Poitiers, 2007. http://www.theses.fr/2007POIT2299.

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L’objectif de ce travail a été double : améliorer la connaissance des facteurs qui influencent les processus de charge des particules < 1 mm et proposer desProcédés innovants pour la séparation des mélanges de matériaux pulvérulents fins. La méthodologie des plans d’expérience a été utilisée pour la modélisation du processus de charge triboélectrique de poudres dans des dispositifs pneumatiques. En utilisant la charge en champ couronne, il a été possible de mettre au point, un procédé destiné au recyclage des cendres issues des centrales thermoélectriques à charbon. La compréhension des phénomènes en jeu a été améliorée par la simulation numérique des trajectoires des particules. L’induction Electrostatique est le troisième mécanisme de charge dont l’efficacité a été prouvée expérimentalement. En Conclusion : le développement de nouveaux procédés de séparation pour des particules fines implique le choix du mécanisme de charge et du système d’électrodes les plus appropriés.
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You, Yuan. "Liquid-liquid phase separation in atmospherically relevant particles." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50466.

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Aerosol particles containing both organic material and inorganic salts are abundant in the atmosphere. These particles may undergo phase transitions when the relative humidity fluctuates between high and low values in the atmosphere. This dissertation focuses on liquid-liquid phase separation in atmospherically relevant mixed organic-inorganic salt particles. Liquid-liquid phase separation has potentially important implications in chemical and physical processes in the atmosphere. A humidity and temperature controlled flow cell coupled to either an optical, fluorescence, or Raman microscope was used to study the occurrence of liquid-liquid phase separation and the phase separation relative humidity (SRH) of particles containing atmospherically relevant organic species mixed with inorganic salts. Organic species in the particles studied include single organic species, such as carboxylic acids, alcohols, and oxidized aromatic compounds, as well as complex laboratory-produced secondary organic material. Material directly collected from the atmospheric environment was also studied. In this dissertation, the effects of oxygen-to-carbon elemental ratio (O:C) of the organic species, salt types, molecular weight of the organic species, and temperature on the occurrence of liquid-liquid phase separation and SRH were studies. The oxygenic-to-carbon elemental ratio was a useful parameter for predicting liquid-liquid phase separation and SRH. Liquid-liquid phase separation did not depend strongly on the molecular weight of the organic species or temperature. The correlation between SRH and O:C in particles containing organic species mixed with different salts were qualitatively similar. Results of this research will help improve the understanding of liquid-liquid phase separation in the atmospheric aerosols, and may, in turn, improve simulations and predictions of atmospheric chemistry and climate. Supplementary materials: http://hdl.handle.net/2429/50970
Science, Faculty of
Chemistry, Department of
Graduate
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Jackson, George. "Phase separation in solutions of large spherical particles." Thesis, University of Oxford, 1986. http://ora.ox.ac.uk/objects/uuid:9db7de2e-b365-4433-8e14-746efb32c070.

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The effect of large size ratios of solute to solvent on the critical properties and phase behaviour of binary mixtures of spherical particles is investigated using an "augmented van der Waals" equation of state. The equation used is essentially a van der Waals equation with an improved hard sphere repulsive term. Molecular dynamics and constant-pressure Monte Carlo simulations of binary mixtures of hard spheres with different diameter ratios and mole fractions are undertaken to check the adequacy of the hard sphere equation. Good agreement is found, even for systems with large differences in size. Furthermore, many of the hard sphere mixtures exhibited a transition from a fluid to a solid phase at high densities. Phase boundaries are calculated for model mixtures comprising spheres of different sizes between which there are long-ranged attractive forces. Particular attention is paid to the case in which the ratio of sizes is infinite. The systems show a wide variety of behaviour that includes liquid-liquid and gas-gas immiscibility, and the formation of negative azeotropes. Calculations investigating the effect of different attractive interactions between the small and large spheres show that as the magnitude of this interaction is increased, liquid-liquid immiscibility becomes the dominant feature of the phase diagram at moderate temperatures. The extent of liquid-liquid coexistence is greatest at large size differences. These model systems are shown to reproduce some of the behaviour of aqueous solutions of surfactants if it is assumed that the large spheres are models of the micelles and the small spheres models of the solvent molecules. The properties of binary lattice mixtures of bifunctional molecules whose ends are chosen to mimic surfactant and solvent molecules are also briefly investigated, to determine the effect of the asymmetric surfactant molecule on the phase separation. Closed-loops emerge in the phase diagrams as the surfactant character of one of the species is increased.
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Imani, Jajarmi Ramin. "Acoustic separation of submicron particles in gaseous flows." Licentiate thesis, KTH, Mekanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-167629.

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The separation of submicron particles suspended in gaseous flows is a problem of great importance and is the subject of sustained research efforts. This is motivated by several challenges presented by modern science and technology requiring high separation efficiencies for submicron particles.Continuous acoustic particles separation is a novel technique based on the acoustophoresis phenomenon, in which a particle within an acoustic field is manipulated using acoustic forces on its surface. This technique has the potential to overcome some of the limitations of common techniques for the separation of submicron particles, as well as performing advanced tasks such as sorting particles according to their size or density.In this thesis, the separation of submicron solid particles suspended in air is investigated experimentally, with a focus on the effect of key design parameters (acoustic, flow, geometry) on the efficiency of the process. A simple method based on laser light scattering was also used to provide qualitative information on the particle number density as a function of position in the channel. This technique allowed to quickly investigate the effect of a wide range of parameters on the acoustic separation efficiency including the pressure amplitude, the frequency of the standing wave, the average flow velocity and the parallelism of the channel walls.   The results demonstrate conclusively that acoustic manipulation is possible for submicron particles and that the acoustic force scales following the trends expected from theoretical models developed in the continuum regime. From the size of the particles used it however follows that the observed separation is the result of transition regime acoustophoresis, with a Knudsen number on the order of 0.2.

QC 20150522

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Kejík, Pavel. "Low-Cost Filtration Barriers for Ultrafine Particles Separation." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401605.

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V mnoha oborech jsou stále využívána anorganická filtrační media založená na materiálech, jejichž výroba využívá primární suroviny. Jejich výroba je tedy energeticky náročná a v důsledku nákladná a neohleduplná k životnímu prostředí. Cílem této práce je ověřit možnost využití alkalicky aktivovaných materiálů na bázi sekundárních surovin, především vysokopecních strusek (BFS) a popílků z uhelných elektráren (FA), pro výrobu porézních médií schopných v budoucnosti nahradit keramické a jiné anorganické filtry. Výzkum je rozvinut skrze experimentální design založený na výpočetním schématu samostatně vyvinutém s pomocí programu MATLAB. Toto schéma počítá vhodná složení směsí na základě poměrů obsahu nejdůležitějších oxidů ve vstupních surovinách. Tak je zajištěno zohlednění proměnlivého složení vstupních surovin a práce je tím hodnotnější, že její výsledky jsou skrze početní nástroj zohledňující základní oxidové složení surovin zobecnitelné. Zároveň byly však pro srovnání a lepší názornost závislostí vlastností na složení navrhnuty a připraveny i série vzorků založené vždy pouze na jedné ze surovin. Z výsledků vyplývá, že pevnost vzorků z těchto směsí (vytvrzených 24 hodin při 70 °C) ve čtyřbodové ohybové zkoušce dle ČSN EN 12390 5 může přesáhnout 7,6 MPa. Dosažením co možná nejvyšší porozity však zákonitě negativně ovlivňuje pevnost materiálu a výsledný materiál tedy dosahuje pevnosti těsně nad hranicí 6,3 MPa. Výsledky obecně dokazují, že nejvíce je pevnost materiálů ovlivněna poměrem SiO2/Al2O3 a množstvím alkalického aktivátoru. Z výsledků vyplývá, že alkalicky aktivované materiály (AAM) na bázi strusky dosahují i více než dvojnásobné pevnosti analogických materiálů na bázi elektrárenského popílku. Velikost pórů materiálů připravených z tříděných surovin s velikostí zrna od desítek po lehce přes sto mikronů se ve většině případů pohybuje v rozmezí desetin ž jednotek mikronů, v případě výsledného materiálu je to pak přibližně 0,2 mikronu. Celková porozita lisovaných těles se pohybuje těsně pod 40 %, což je v tomto případě téměř dvojnásobek ve srovnání s totožnými materiály na bázi netříděných surovin. Výsledky rovněž ukazují, že materiály na bázi strusky vykazují nižší porozitu než ty na bázi popílku, což je patrně způsobeno rozdílnou morfologií částic obou materiálů – částice strusky jsou nepravidelně hranaté a částice popílku kulaté. V průběhu experimentální činnosti byla pozorována tvorba výkvětů u materiálů na bázi elektrárenských popílků. Pomocí Energo-disperzní spektroskopické analýzy (EDS) byly výkvěty identifikovány jako hydroxid sodný procházející karbonatací za účasti vzdušného CO2. Test permeability vyžadoval, kvůli velmi jemné povaze porézní struktury, přípravu asymetrických filtračních přepážek. Tyto přepážky dosáhli propustnosti 138 L/h.m2.bar pro vodu a 1320 L/h.m2.bar pro vzduch.
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Woodside, Steven Murray. "Spatial distribution of acoustic forces on particles : implications for particle separation and resonator design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/NQ34646.pdf.

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Schaap, Allison Schaap. "Transport and size-separation of airborne particles in a microchannel for continuous particle monitoring." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/30230.

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Microfluidics research and development has emerged as a novel and promising tool for the development of sensors and actuators. However, one area in which microfluidics has been only minimally employed is in the handling of airborne particles, or aerosols. The real-time monitoring of aerosols is important for protecting human health and earth’s environment. The small size of microchannels, coupled with the opportunity to integrate sensing technologies, suggests them as a promising tool for the next generation of aerosol sensors. To that end, this thesis presents a microfluidics-based system for the size-separation of aerosols. Specifically, centrifugal force is exerted on each particle as it travels around a curved microchannel, resulting in the particle occupying a size-dependent lateral position in the channel. The behaviours of aerosols in a microchannel are examined, including the effects of flow focusing, the diffusion of airborne particles in a channel, and the centrifugal and viscous forces exerted on particles in a curved microchannel. Mathematical descriptions and computer simulations of these effects are developed to model these effects. Straight and curved microchannels were fabricated and each of these effects was measured experimentally, and compared to the models. Various combinations of airborne particles between 0.2 µm and 3.2 µm were successfully separated by size. A prototype optical particle detector was built and tested for its suitability as a candidate for integration with the microchannel particle separator. This represents the first approach in which aerosols have been separated by centrifugal forces in a microchannel, and one of very few approaches that have been used for any kind of size-based separation of airborne particles in microchannels. The small footprint and potential for integration offered by microsystem fabrication technology make it a desirable avenue of pursuit for the development of small, portable particulate monitors. The results presented here confirm that this approach to size-separation is a feasible option for a future microsystem based size-selective particulate monitor.
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Goodluck, Olufemi W. (Olufemi Waheed). "Magnetic separation of strongly magnetic particles using alternating field." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65920.

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Books on the topic "Particles Separation"

1

J, Wilkinson Kevin, and Lead Jamie R, eds. Environmental colloids and particles: Behaviour, separation and characterisation. Chichester, England: John Wiley & Sons Ltd, 2007.

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Klimpel, Richard R. Introduction to solid-solid separation of fine particles by physical means. Gainesville, FL: NSF Engineering Research Center for Particle Science & Technology, University of Florida, 1998.

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Gélinas, Stéphanie. Preparation of magnetic carriers through functionalization of nanosized maghemite particles. Montreal, QC: Department of Mining and Metallurgical Engineering, McGill University, 1999.

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Madden, Michael John. Size separation of fine particles with the EPS aerodynamic classifier. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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M, Coulson J., Harker J. H. 1937-, Backhurst J. R, Coulson J. M, and Richardson J. F, eds. Coulson and Richardson's chemical engineering. 5th ed. Oxford: Butterworth-Heinemann, 2002.

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C, Hill S., ed. Light scattering by particles: Computational methods. Singapore: World Scientific, 1990.

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Cheng, Alison. Formation of hybrid particles by phase separation-induced heterocoagulation of a polyferrocenylsilane polyelectrolyte with silica. Ottawa: National Library of Canada, 2003.

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service), SpringerLink (Online, ed. Electromagnetic wave scattering on nonspherical particles: Basic methodology and simulations. Berlin: Springer, 2009.

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Japan-CIS Workshop on Interactions of Fuel Particles with Fusion Materials (1st 1992 University of Tokyo). Proceedings of Japan-CIS Workshop on Interactions of Fuel Particles with Fusion Materials (IFPFM), at University of Tokyo, Tokyo, Japan, on December 1-4, 1992. Edited by Yamawaki M, Nihon Genshiryoku Gakkai, and Tōkyō Daigaku. Genshiryoku Kōgaku Kenkyū Shisetsu. Tokyo, Japan: The Laboratory, 1993.

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Partition of cell particles and macromolecules: Separation and purification of biomolecules, cell organelles, membranes, and cells in aqueous polymer two-phase systems and their use in biochemical analysis and biotechnology. 3rd ed. New York: Wiley, 1986.

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Book chapters on the topic "Particles Separation"

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Magoss, Endre, György Sitkei, and Zoltán Kocsis. "Separation of Particles from the Airflow." In Dust Extraction and Handling in the Wood Industry, 59–82. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08915-2_5.

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Tan, Zhongchao. "Separation of Particles from a Gas." In Green Energy and Technology, 151–92. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-212-8_6.

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Tanoue, Eiichiro. "Electrophoretic Separation of Particulate Proteins in Seawater." In Marine Particles: Analysis and Characterization, 163–69. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm063p0163.

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Safarik, Ivo, Kristyna Pospiskova, Eva Baldikova, and Mirka Safarikova. "Magnetic Particles for Microalgae Separation and Biotechnology." In Food Bioactives, 153–69. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51639-4_7.

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Oba, Eiji, Hideki Miyajima, Yuuichi Ishikawa, and Shuji Yoshizawa. "Magnetic Separation of High-Tc Superconducting Particles." In Advances in Superconductivity III, 831–34. Tokyo: Springer Japan, 1991. http://dx.doi.org/10.1007/978-4-431-68141-0_186.

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Goossens, Karel, and Leo Van Biesen. "Electromagnetic Separation of Small Particles in the Dielectric Regime." In Separations for Biotechnology 2, 162–71. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0783-6_18.

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Williams, R. A., and X. Jia. "Selective Separation of Fine Particles at a Charged Solid/Liquid Interface." In Advances in Fine Particles Processing, 157–69. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-7959-1_12.

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Yellen, Benjamin. "Magnetic Forces and Torques: Separation, Tweezing, and Materials Assembly in Biology." In Biomedical Applications of Magnetic Particles, 33–57. First edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9781315117058-3.

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Simas Filho, Eduardo F., José M. de Seixas, and Luiz P. Calôba. "High-Energy Particles Online Discriminators Based on Nonlinear Independent Components." In Independent Component Analysis and Signal Separation, 718–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00599-2_90.

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Yamamoto, Hideo. "Electrostatic Separation of Fine Particles at High Temperature." In Gas Cleaning at High Temperatures, 57–65. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2172-9_5.

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Conference papers on the topic "Particles Separation"

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Kumar, Vivek, Sudipto Chakraborty, and B. C. Meikap. "Separation of Particles in a Hydrocyclone Separator." In 14th Asia Pacific Confederation of Chemical Engineering Congress. Singapore: Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-1445-1_025.

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Kadaksham, J., P. Singh, and N. Aubry. "Particle Separation Using Dielectrophoresis." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43950.

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A numerical scheme based on the distributed Lagrange multiplier (DLM) method is used to simulate the process of separation of particles with different dielectric properties suspended in an electrorheological (ER) fluid and subjected to a nonuniform electric field. The dielectrophoresis induced separation of particles is possible only when the sign of Clausius-Mossoti factor for the particles is different, as in this case the dielectrophoretic force moves them to different regions of the device. The time required for separation of particle in simulations is larger than that given by an order or magnitude analysis because of the formation of particle chains which arise due to the dipole-dipole interactions among the particles and move much more slowly than isolated particles.
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KOPEL, Pavel, Natalia CERNEI, Pavel HORKY, Zuzana LACKOVA, Vedran MILOSAVLJEVIC, Milica GAGIC, Ondrej ZITKA, and Vojtech ADAM. "MAGHEMITE PARTICLES FOR SPERMIDINE SEPARATION." In NANOCON 2019. TANGER Ltd., 2020. http://dx.doi.org/10.37904/nanocon.2019.8496.

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Moallemi, Alireza, Maysam Saidi, and Hassan Basirat Tabrizi. "Humidity Effect on the Separation Efficiency of Cylindrical Cyclone Separator." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37284.

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In order to evaluate the humidity effect on the performance of a gas-solid cyclone, an experimental setup is designed including a cylindrical cyclone with a tangential inlet, air compressor, humidifier, flow meter and injector of particles with known properties. The cyclone body is a cylinder with diameter and height of 50 and 150 mm, respectively and the rectangular inlet with dimension of 10 mm × 22 mm. The solid particles used in the experiments are cement because of the application of cyclones in air purification in cement industry. The injection of particle is performed with a controlled rate. A humidifier device increases the relative humidity of the inlet flow from 30 to 100 percent. Separation efficiency is defined as the ratio of collected to injected particles and calculated for different inlet airflow rates for dry and humidified conditions. Obtained results for this experiment indicates humidity has a favorable effect on increasing the efficiency of a cyclone separator. Although increasing the humidity of the air increases the density, which has an adverse effect on the separation efficiency, it is negligible in contrast to its benefits on agglomeration of particles.
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Pease, Leonard F., Jason Serkowski, Timothy G. Veldman, Jonathan Willams, Xiao-Ying Yu, Michael J. Minette, Judith Ann Bamberger, and Carolyn A. Burns. "Can Bump Arrays Separate Particles From Turbulent Flows?" In ASME 2021 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/fedsm2021-67696.

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Abstract In this paper, we evaluate the hypothesis that bump arrays can be used to separate particles from turbulent flows entering the array. Microfluidic bump arrays are known for separating particles by size from laminar inlet flows. However, turbulent inlet flows have not been explored but become important as microfluidic bump arrays are scaled up to mesofluidic bump arrays. We find experimentally that particle separation is indeed effective at higher Reynolds numbers. These experimental findings portend industrial scale particle separation due to the higher flow rates they facilitate.
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Merlen, Alain, Farzam Zoueshtiagh, and Peter J. Thomas. "Particles Separation by Oscillation in a Capillary Tube." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62122.

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The oscillatory motion of a fluid carrying micron-sized particles inside a capillary tube is investigated experimentally. It is found that initially uniformly distributed particles can segregate and accumulate to form regularly spaced micron-sized particle clusters. The wavelength of the micro clusters is compared to data for macro-scale sand-ripple patterns and found to obey the same universal scaling as these. A dimensional analysis is performed that confirms the universality of the experimentally observed scaling. The experimental data for the micro-ripple clusters further suggest the existence of a minimum particle length scale for which patterns can form and below which the Brownian motion associated with the molecules of the matrix fluid inhibits pattern formation.
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YANG, Hui, Hong-Ming SUN, Yi ZHANG, and Hang GUO. "PARTICLES SEPARATION USING MICROMACHINED ULTRASONIC DEVECE." In Proceedings of the 2006 Symposium. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812770165_0068.

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Jerónimo, Y. "Separation of Cosmic-Ray Components in a Single Water Cherenkov Detector." In PARTICLES AND FIELDS: Tenth Mexican School on Particles and Fields. AIP, 2003. http://dx.doi.org/10.1063/1.1594371.

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Darabi, Jeff. "Numerical Analysis of Dielectrophoretic-Based DNA Separation and Trapping." In ASME 2022 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fedsm2022-87076.

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Abstract In this study, dielectrophoresis (DEP) has been coupled with field-flow fractionation (FFF) for the sorting and trapping of the biological particles. A numerical simulation is performed to compute particle trajectories under the influence of DEP, drag, gravitational, and buoyancy forces, as well as Brownian motion. The simulation was performed using OpenFOAM CFD software. Both positive and negative DEP methods are examined as possible separation techniques for DNA fragments. Positive DEP forces are used to attract the particles to the electrodes and trap them in groups of similar particles while a combination of negative DEP forces and field flow fractionation (FFF) are used to levitate the particles within the fluid flow to certain flow trajectories. The results obtained from this study, including electric field simulations, particle trajectories, elution times, and trapping lengths are presented.
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Han, Chungmin, and Jaesung Park. "Size Based Particle Separation Method by Zero Diffusivity." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53393.

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Separation is one of the most basic and frequently using techniques for biological research. Researchers have been using gel-electrophoresis for DNA separation and also using various chromatography techniques for protein and bio-molecule separations. Recently, as micro and nano fabrication techniques have developed, interest in miniaturized micro scale biology research tools has also increased. According to this trend, micro scale devices for separating various sized of particles such as cells, organelles, proteins, lipids and vesicles play an important role in a total system. Therefore, separation devices based on various methods are suggested. Widely used separation methods for micro devices are electro-kinetics with special channel geometries and laminar flow control. In electro-kinetic methods, micro channel electrophoresis and DEP (dielectrophoresis) are commonly used.[1] These separation methods, however, can only be used in very narrow range because their working conditions, high voltage and charge dependence, are not compatible with many biomaterials.
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Reports on the topic "Particles Separation"

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Buchholz, B. A., L. Nunez, and G. F. Vandegrift. Radiolysis and hydrolysis of magnetically assisted chemical separation particles. Office of Scientific and Technical Information (OSTI), May 1995. http://dx.doi.org/10.2172/162892.

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James K. Neathery, Gary Jacobs, Amitava Sarkar, and Burtron H. Davis. Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles. Office of Scientific and Technical Information (OSTI), March 2006. http://dx.doi.org/10.2172/901639.

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James K. Neathery, Gary Jacobs, Amitava Sarkar, Adam Crawford, and Burtron H. Davis. Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles. Office of Scientific and Technical Information (OSTI), September 2006. http://dx.doi.org/10.2172/896672.

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Amitava Sarkar, James K. Neathery, and Burtron H. Davis. Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles. Office of Scientific and Technical Information (OSTI), December 2006. http://dx.doi.org/10.2172/920235.

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James K. Neathery, Gary Jacobs, and Burtron H. Davis. SEPARATION OF FISCHER-TROPSCH WAX PRODUCTS FROM ULTRAFINE IRON CATALYST PARTICLES. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/835648.

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James K. Neathery, Gary Jacobs, and Burtron H. Davis. SEPARATION OF FISCHER-TROPSCH WAX PRODUCTS FROM ULTRAFINE IRON CATALYST PARTICLES. Office of Scientific and Technical Information (OSTI), March 2004. http://dx.doi.org/10.2172/823533.

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James K. Neathery, Gary Jacobs, and Burtron H. Davis. SEPARATION OF FISCHER-TROPSCH WAX PRODUCTS FROM ULTRAFINE IRON CATALYST PARTICLES. Office of Scientific and Technical Information (OSTI), March 2005. http://dx.doi.org/10.2172/840359.

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James K. Neathery, Gary Jacobs, Amitava Sarkar, and Burtron H. Davis. Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/861070.

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Goodarz Ahmadi. Developing Supersonic Impactor and Aerodynamic Lens for Separation and Handling of Nano-Sized Particles. Office of Scientific and Technical Information (OSTI), June 2008. http://dx.doi.org/10.2172/941125.

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Krikorian, O. H., and P. G. Curtis. Characterization of erbium oxide particles and separation into a desired size range for coating applications. Office of Scientific and Technical Information (OSTI), February 1989. http://dx.doi.org/10.2172/6368636.

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