· @article{osti_20727625, title = {Development of high-efficiency hydraulic separators}, author = {Luttrell, G H and Westerfield, T C and Kohmuench, J N and Mankosa, M J and Mikkola, K A and Oswald, G}, abstractNote = {Hydraulic separators are commonly used for particle size classification and gravity concentration of minerals and
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· The SRT and the hydraulic retention time (HRT) have a significant influence on biomass concentration and membrane fouling tendency (Yan et al., 2014, Deng et al., 2015, Nuansawan et al., 2016). Indeed, SRT/HRT can alter mixed liquor properties (extracellular polymeric substances (EPS) and sludge stability).
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· In this paper, we presented a microfluidic chip that integrates bacterial separation, mixing, and concentration solely through fluid dynamics. Size-based bacterial separation was achieved through Dean flow and inertial focusing by harnessing the attributes of a spiral-shaped fluidic channel.
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· Water concentration profiles across swollen IEMs under hydraulic pressure were measured using a custom-built permeation cell designed for membrane stack experiments. Several experiments performed in Na + form Nafion 117 for Δ p values of 86.2 and 137.9 bar showed that water content decreases from the feed to the permeate side
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Concentration is carried out by digesting the powdered ore with a concentrated solution of NaOH at 473 – 523 K and 35 – 36 bar pressure. This way, Al 2 O 3 is leached out as sodium aluminate (and SiO 2 too as sodium silicate) leaving the impurities behind.
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:Cell Separation Using HydrocyclonesComputational Fluid Dynamicsseparators have an inherent design flaw that limits both the capacity and efficiency of the separator. Hydraulic density concentration. In addition to particle sizing applications,
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· Effluent NO 2 −-N and NO 3 −-N showed a similar trend ().At an HRT of 24 h, NO 2 −-N accumulated was 1.15 ± 0.68 mg/L, indicating that complete denitrification was not achieved.This is because NO 3 −-N reductase would compete with NO 2 −-N reductase for substrate electrons and NO 3 −-N reductase would inhibit the activity of NO 2 −-N
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· HMO-3 was able to buffer the solution at higher concentrations of OH – than HMO-2 due to its higher concentration of ion exchange sites [23], [24], [32]. The maximum Li uptake by HMO-2 and HMO-3 in these experiments were 18 mg g −1 and 27 mg g −1 , respectively; these values represent the maximum projected Li sorption
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· Particles Separation and Tracks in a Hydrocyclone. 2011-Volume 14. Volume 14, Issue 1. 01 March 2011. Reach: 1803. Chemical Engineering. Grad-efficiency curves. Chih-Yuan Hsu1 , Syuan-Jhih Wu1 and Rome-Ming Wu 1,2. 1Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taiwan 251, R.O.C.
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:Gravity ConcentrationClassificationWe aim to use a flat, porous membrane to filter milk. The membrane has a surface area of 17.3 cm 2; the membrane resistance and thickness are not known. The milk contains 4.3 kg/m 3 solids and has a viscosity of 0.001 Pa-s. We previously filtered this milk at an applied pressure drop of 20 psi and the following data was collected: Time (hr) 0.5.
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· The ability of modern hydraulic separators to provide three functions-hydraulic separation, air removal and dirt removal-makes them well-suited for a variety of systems, especially systems in which an older distribution system, one that may have some accumulated sludge, is connected to a new heat source. Figure 6.
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· Abstract. Hydraulic separators are commonly used for particle size classification and gravity concentration of minerals and coal. Unfortunately, the efficiency of these processes can be quite low
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· Secondly, the solid concentration significantly affects the stability of hydraulic conveying process, which can be used to determine the flow regime (preventing the pipe blockage) (Doron and Barnea, 1996, Zhou et al., 2020).
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· A theoretical AE model for particle motions during hydraulic conveying was proposed. • Particle dispersion state affects the dependence of AE energy on particle motions. Nomenclature c particle number concentration, m −3 c s solid mass concentration (transport
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We aim to use a flat, porous membrane to filter milk. The membrane has a surface area of 17.3 cm 2; the membrane resistance and thickness are not known. The milk contains 4.3 kg/m 3 solids and has a viscosity of 0.001 Pa-s. We previously filtered this milk at an applied pressure drop of 20 psi and the following data was collected: Time (hr) 0.5.
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· Froth Flotation Method: This method is primarily used to remove gangue from sulphide ores. The ore is ground into a powder and mixed with water to create a suspension. To this, Collectors and Froth Stabilizers are added. Collectors (like pine oils, fatty acids etc) enhance the non-wettability of the metal part of the ore, allowing it to form
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Theory: There are four types of ore separation based on the nature of the ore. Hydraulic (Gravity Separation) method. Magnetic separation method. Froth floatation. Chemical method or Leaching. The different types of ores of metals are given in the below table: Oxide Ores. Carbonate Ores.
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· 2. Mass transfer and modeling of the filtration process in the absence of fouling. For an in-depth analysis of the transport resistances in the filtration/separation process due to membrane fouling, it is necessary to understand the mass transfer occurring through membranes in the absence of fouling.
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By flowing the powdered ore in a current of water, the lighter rocky impurities can be washed away and the ore particles are left behind. For this, either wilfley table or Hydraulic classifier is used. Generally oxide and carbonate ores are concentrated by this method. i.e. haematite and cerussite. There are two gravity concentration methods.
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The superhydrophilic cotton fabric achieved remarkable separation performance with a separation efficiency higher than 99.5 % and permeation flux of 28,000 L∙m −2 ∙h −1. Xu et al. [27] constructed a stable superhydrophilic PVDF microfiltration membrane via dip-coating with polydopamine and catechol-functionalized hydrophilic polymer, displaying a 99.98 %
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· Plant hydraulic conductance was more tightly correlated with stomatal conductance at eCO 2 than at ambient CO 2 concentration (aCO 2) across a wide range of plant species (Domec et al., 2017). However, it is unknown how eCO 2 influences the coordination of plant hydraulic efficiency with photosynthetic rates and growth in
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:Gravity ConcentrationClassification · It’s one way to couple two or more overlapping hydronic circuits, each with its own circulator, so that the circulators don’t interfere with each other. If you understand
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:G.H. Luttrell, T.C. Westerfield, J.N. Kohmuench, M.J. Mankosa, K.A. Mikkola, G. Oswald · Hydraulic separators are commonly used for particle size classification and gravity concentration of minerals and coal. Unfortunately, the efficiency of these
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· An advanced concentration step is expected to separate up to 75–80% of the COD (Verstraete et al. 2009; Verstraete and Vlaeminck 2011) and about 20% of the sewage nitrogen, mainly consisting of colloidal and
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· The most severe fouling condition was observed at phase IV when the OLR was maintained as that of phase III, with parallel increase in influent COD concentration and hydraulic retention time (HRT). In this phase, membrane was thoroughly fouled after 70, 155 and 85 min at respective operation days of 32, 36, and 39.
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· Abstract. This article deals with the characteristics of weakly swirling turbulent flow field in a Turbid Water Hydraulic Separation Device (TWHSD) through experimental and numerical researches. The flow field was measured by PIV, which provided streamlines, vortex structure, vorticity and velocity distribution in different test
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: Chemistry Bibliophily · The effects of particle characteristics are also studied on the separation. It was observed that instead of monodispersed particles, particle size distribution should be incorporated in the CFD model for better prediction of
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Physical separation methods such as medium separation, magnetic separation, gravity concentration and sensor-based separation method can be applied to fresh ores from
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· The consumption of natural gas is of great importance to optimize China’s energy structure toward reduced CO2 emissions and is projected to increase in the next 10 years. Coalbed methane (CBM) is
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· Fig. 4 (a–c) shows the test results of the revolution, self-rotation, and flipping velocity of particles in a gas cyclonic flow field. It can be seen that the inlet gas flow rate (Q) plays an important role in each kind of velocity; the greater the gas flow rate, the greater the velocity of revolution, self-rotation, and flipping, with the particle’s self-rotation being
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