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Journal articles on the topic 'Particle-bubble attachment efficiency'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Hewitt, D., D. Fornasiero, and J. Ralston. "Bubble particle attachment efficiency." Minerals Engineering 7, no. 5-6 (1994): 657–65. http://dx.doi.org/10.1016/0892-6875(94)90097-3.

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2

Rong, Guoqiang, Yangchao Xia, Youfei Zhang, et al. "Effect of Comminution Methods on Low-Rank Coal Bubble–Particle Attachment/Detachment: Implications for Flotation." Minerals 9, no. 7 (2019): 452. http://dx.doi.org/10.3390/min9070452.

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The floatability of fine low-rank coal particles can be greatly influenced by their morphological characteristics, such as shape and surface roughness. In this study, the attachment efficiency and detachment amplitude of fine low-rank coal particles produced by various comminution methods onto/from the bubble surface were investigated using homemade bubble–particle wrap angle and bubble–particle attachment/detachment testing systems. Results showed that the length–diameter ratio of rod-milled products was smaller than that of crushed products. The wrap angle of particles obtained by the crushe

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3

Shawwa, Ayman R., and Daniel W. Smith. "Dissolved air flotation model for drinking water treatment." Canadian Journal of Civil Engineering 27, no. 2 (2000): 373–82. http://dx.doi.org/10.1139/l99-071.

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In this study, a kinetic model that describes bubble-particle transport and attachment in the contact zone of dissolved air flotation (DAF) process is presented. The kinetic model, which is based on the assumption that the contact zone is analogous to a chemical reactor, describes the particle removal rate as a first-order reaction with respect to the concentration of particles. It identified important parameters, such as the bubble-particle attachment efficiency (αPB). The theoretical first-order particle removal rate constant (kP), based on the mathematical model, was determined by varying α

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4

Leppinen, D. M., S. B. Dalziel, and P. F. Linden. "Modelling the global efficiency of dissolved air flotation." Water Science and Technology 43, no. 8 (2001): 159–66. http://dx.doi.org/10.2166/wst.2001.0490.

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The purpose of this paper is to examine how the efficiency of dissolved air flotation is affected by the size of bubbles and particles. The rise speed of bubble/particle agglomerates is modelled as a function of bubble and particle size, while the kinematics of the bubble attachment process is modelled using the population balance approach adopted by Matsui, Fukushi and Tambo. It is found that flotation, in general, is enhanced by the use of larger particles and larger bubbles. In particular, it is concluded that for the ultra-high surface loading rates of 25 m/hr or more planned for future fl

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5

Edzwald, James K. "Principles and applications of dissolved air flotation." Water Science and Technology 31, no. 3-4 (1995): 1–23. http://dx.doi.org/10.2166/wst.1995.0512.

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Principles of dissolved air flotation (DAF) discussed include: bubble formation and size, bubble-particle interactions, measures of supplied air, and modeling of the reaction and clarification zones of the flotation tank. Favorable flotation conditions for bubble attachment or adhesion to particles requires a reduction in the charge of particles and production of hydrophobic particles or hydrophobic spots on particle surfaces. A conceptual model for the bubble-particle reaction zone based on the single collector collision efficiency is summarized and discussed. An alternative modeling approach

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6

Bilal, Muhammad, Ilhwan Park, Vothy Hornn, et al. "The Challenges and Prospects of Recovering Fine Copper Sulfides from Tailings Using Different Flotation Techniques: A Review." Minerals 12, no. 5 (2022): 586. http://dx.doi.org/10.3390/min12050586.

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Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered secondary resources or future deposits of copper. Particle–bubble collision efficiency and particle–bubble aggregate stability determines the recovery of target particles; this attachment efficiency plays a vital role in the selectivity process. The presence

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7

Lakghomi, B., Y. Lawryshyn, and R. Hofmann. "Evaluation of flow hydrodynamics in a pilot-scale dissolved air flotation tank: a comparison between CFD and experimental measurements." Water Science and Technology 72, no. 7 (2015): 1111–18. http://dx.doi.org/10.2166/wst.2015.321.

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Computational fluid dynamics (CFD) models of dissolved air flotation (DAF) have shown formation of stratified flow (back and forth horizontal flow layers at the top of the separation zone) and its impact on improved DAF efficiency. However, there has been a lack of experimental validation of CFD predictions, especially in the presence of solid particles. In this work, for the first time, both two-phase (air–water) and three-phase (air–water–solid particles) CFD models were evaluated at pilot scale using measurements of residence time distribution, bubble layer position and bubble–particle cont

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8

Shahbazi, Behzad. "Study of Relationship between Flotation Rate and Bubble Surface Area Flux using Bubble-Particle Attachment Efficiency." American Journal of Chemical Engineering 3, no. 2 (2015): 6. http://dx.doi.org/10.11648/j.ajche.s.2015030202.12.

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9

Choi, Junhyun, Gahee Kim, Sowon Choi, et al. "Application of Depletion Attraction in Mineral Flotation: I. Theory." Minerals 8, no. 10 (2018): 451. http://dx.doi.org/10.3390/min8100451.

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We investigate the role of depletion interactions in the particle–bubble interactions that determine the attachment capability of particles on the bubble surface in flotation. In this article, we propose a theoretical model that explains how this attractive interaction could enhance flotation efficiency. Two optimum conditions are determined for the concentration and molecular weight of the depletion agent. The optimum concentration can be determined through the extent of surface activity of the depletion agents. The magnitude of the depletion attraction increases as the concentration increase

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10

Batjargal, Khandjamts, Onur Güven, Orhan Ozdemir, Feridun Boylu, Yusuf Enes Pural, and Mehmet Sabri Çelik. "Correlation of Flotation Recoveries and Bubble–Particle Attachment Time for Dodecyl Ammonium Hydrochloride/Frother/Quartz Flotation System." Minerals 13, no. 10 (2023): 1305. http://dx.doi.org/10.3390/min13101305.

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Recent studies in the flotation of fine particles have necessitated new techniques and analyses for developing various strategies. Particularly, the improvements in flotation chemistry including the selection of the type of frother, collector, and other reagents have become very significant. In this study, the effect of different commercial polypropylene glycol frothers (PPG200, 400, and 600) in the presence of dodecylammonium hydrochloride (DAH) was investigated for their contribution to flotation recoveries and bubble–particle attachment time values of fine quartz minerals. Zeta potential me

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11

Julapong, Pongsiri, Jiraphon Ekasin, Pattaranun Katethol, et al. "Agglomeration–Flotation of Microplastics Using Kerosene as Bridging Liquid for Particle Size Enlargement." Sustainability 14, no. 23 (2022): 15584. http://dx.doi.org/10.3390/su142315584.

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Microplastics (MPs), defined as plastics with diameters between 1 and 5000 µm, are problematic pollutants in the environment, but their removal is challenging because of their minute size. One promising approach for their removal is flotation because MPs are inherently hydrophobic. However, the very small particle size of MPs lowers the probability of MPs-bubble collision and attachment that in turn affects the efficiency of the process. To address this challenge, we propose the use of agglomeration-flotation, a technique using kerosene as a bridging liquid to enlarge the particle sizes of MPs

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12

Phengsaart, Theerayut, Ilhwan Park, Jirathpapol Pasithbhattarabhorn, et al. "Development of Microencapsulation-Hybrid Jig Separation Technique as a Clean Coal Technology." Energies 16, no. 5 (2023): 2432. http://dx.doi.org/10.3390/en16052432.

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In this study, the microencapsulation-hybrid jig separation technique was developed to improve the separation efficiency of pyrite and coal in the particle size range of 1–4 mm where conventional jig separation becomes inefficient. A hybrid jig is a gravity concentrator combining the concepts of jig separation and flotation to stratify particles based on their apparent specific gravity. Meanwhile, microencapsulation—a technique that encapsulates target materials with a protective coating—was applied to render pyrite hydrophilic and improve its separation from hydrophobic coal. The results show

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13

Wei, Lim Mee, Lau Ee Von, and Poh Phaik Eong. "Optimization of Nanobubble-Assisted Bunker Oil Flotation from Oil-Wet Sand via Response Surface Methodology (RSM)." ASEAN Journal of Chemical Engineering 15, no. 1 (2015): 1. http://dx.doi.org/10.22146/ajche.49688.

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Flotation technology is an effective method for the separation of oil from sand via gas-liquid-solid system. The mechanism of flotation lies in the generation of gas bubble that attaches itself to the hydrophobic particles. Therefore, one of the main parameters which could affect the efficiency of flotation is the bubble size distribution. This research aims to investigate the efficiency of nanobubbles (NBs) in the flotation process to remove high density bunker oil from oil/sand slurry in a laboratory-scale flotation cell. Experiments were carried out using NBs (approximate diameter of 200 nm

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14

Liu, J. C., and C. Y. Lien. "Dissolved air flotation of polishing wastewater from semiconductor manufacturer." Water Science and Technology 53, no. 7 (2006): 133–40. http://dx.doi.org/10.2166/wst.2006.217.

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The feasibility of the dissolved air flotation (DAF) process in treating chemical mechanical polishing (CMP) wastewater was evaluated in this study. Wastewater from a local semiconductor manufacturer was sampled and characterised. Nano-sized silica (77.6 nm) with turbidity of 130±3 NTU was found in the slightly alkaline wastewater with traces of other pollutants. Experimental results indicated removal efficiency of particles, measured as suspended particle or turbidity, increased with increasing concentration of cationic collector cetyltrimethyl ammonium bromide (CTAB). When CTAB concentration

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15

Tsave, Polyxeni K., Margaritis Kostoglou, Thodoris D. Karapantsios, and Nikolaos K. Lazaridis. "A Hybrid Device for Enhancing Flotation of Fine Particles by Combining Micro-Bubbles with Conventional Bubbles." Minerals 11, no. 6 (2021): 561. http://dx.doi.org/10.3390/min11060561.

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Flotation in the mining industry is a very significant separation technique. It is known that fine and ultra-fine particles are difficult to float, leading to losses of valuable minerals, mainly due to their low collision efficiency with bubbles. Flotation of fine particles can be enhanced either by increasing the apparent particle size or by decreasing the bubble size. Literature review reveals that electroflotation resulted in higher recoveries of ultrafine particles as compared with dispersed-air flotation, because electrolytic bubbles are smaller in size. To this end, the best practical ap

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16

Kwak, D. H., S. J. Yoo, E. J. Lee, and J. W. Lee. "Evaluation on simultaneous removal of particles and off-flavors using population balance for application of powdered activated carbon in dissolved air flotation process." Water Science and Technology 61, no. 2 (2010): 323–30. http://dx.doi.org/10.2166/wst.2010.830.

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Most of the water treatment plants applying the DAF process are faced with off-flavors control problems. For simultaneous control of particles of impurities and dissolved organics that cause pungent taste and odor in water, an effective method would be the simple application of powdered activated carbon (PAC) in the DAF process. A series of experiments were carried out to explore the feasibility for simultaneous removal of kaolin particles and organic compounds that produce off-flavors (2-MIB and geosmin). In addition, the flotation efficiency of kaolin and PAC particles adsorbing organics in

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17

IOANA CORINA, MOGA, MATACHE MIHAI GABRIEL, and COVALIU ILEANA CRISTINA. "Advanced wastewater treatment stage for textile industry." Industria Textila 69, no. 06 (2019): 478–82. http://dx.doi.org/10.35530/it.069.06.1501.

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Dissolved air flotation represents an important stage for wastewater treatment and was used during the last sixty years for different pollutants such as: suspended solids, greases, oils etc. Nowadays, the dissolved air systems are generally applied in industrial wastewater treatment plants, where the amount of pollutants is above the average (textile and leather industry). The research team members developed an innovative DAF unit and realized a laboratory demonstrator (figure 1). The laboratory installation was tested and the efficiency of wastewater treatment was demonstrated. The latest res

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18

COULL, JOHN D., and HOWARD P. HODSON. "Unsteady boundary-layer transition in low-pressure turbines." Journal of Fluid Mechanics 681 (July 1, 2011): 370–410. http://dx.doi.org/10.1017/jfm.2011.204.

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This paper examines the transition process in a boundary layer similar to that present over the suction surfaces of aero-engine low-pressure (LP) turbine blades. This transition process is of significant practical interest since the behaviour of this boundary layer largely determines the overall efficiency of the LP turbine. Modern ‘high-lift’ blade designs typically feature a closed laminar separation bubble on the aft portion of the suction surface. The size of this bubble and hence the inefficiency it generates is controlled by the transition between laminar and turbulent flow in the bounda

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19

Zeng, Lei, Jiacai Lu, and Grétar Tryggvason. "A numerical study of the capture of hydrophobic particles by a buoyant bubble." Physics of Fluids 37, no. 1 (2025). https://doi.org/10.1063/5.0246443.

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When a buoyant bubble rises through a suspension of hydrophobic particles, particles colliding with the bubble generally will stick to it and are thus carried upward with the bubble. Here, we use fully resolved numerical simulations to examine the rate of capture by a single bubble in a domain containing a particle suspension. The bubble is followed for a long enough time to gather several particles, and we examine the effect of the governing parameters on the rate of accumulation for modest bubble Reynolds numbers. The results show that the strongest dependency is on the volume fraction, wher

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20

Ercelik, Gokhan, Mert Terzi, Ilgin Kursun, and Orhan Ozdemir. "Surface chemistry and flotation properties of galena and pyrite particles in the presence of xanthate- monothiophosphate- thiocarbamate collectors." Physicochemical Problems of Mineral Processing, June 10, 2023. http://dx.doi.org/10.37190/ppmp/167947.

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In this study, surface chemistry and flotation properties of the gold-bearing galena and pyrite minerals of Menderes region, Izmir, Turkey were investigated with the use of xanthate-thiocarbamate-monothiophosphate collectors. In this context, the micro-flotation experiments, the zeta potential, and bubble-particle attachment time measurements were conducted in the presence of Thiophosphate (Aero S-8045), Xanthate (SIBX), and Thiocarbamate (Aero float MX-505) collectors. In the case of micro-flotation experiments, the MX-505 exhibited higher flotation efficiency for both minerals compared to SI

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21

Ye, Jianfeng, Zhihao Zhu, Zhaofeng Song, Huiting Xu, Tianchen Xu, and Hui Liu. "Application of microbubble air flotation to harvest Microcystis sp. from agriculture wastewater: The regulation and mechanisms." Biotechnology and Bioengineering, September 9, 2024. http://dx.doi.org/10.1002/bit.28836.

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AbstractThe harvesting of microalgae is the main bottleneck of its large‐scale biomass production, and seeking an efficient, green, and low‐cost microalgae harvesting technology is one of the urgent problems to be solved. Microbubble air flotation has been proven to be an effective measure, but the mechanisms of microbubbles‐algal cell attachment are still unclear. In this study, microbubble air flotation was used as a harvesting method for Microcystis cultured in agricultural wastewater. The process mechanism of microbubble air flotation harvesting microalgae in wastewater was fully revealed

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22

Afonina, E. I., S. N. Titkov, S. N. Aliferova, and I. Yu Tupitsin. "The study of the column flotation capacities for stimulation of potash ore flotation." Gornyi Zhurnal, April 30, 2021, 77–81. http://dx.doi.org/10.17580/gzh.2021.04.11.

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Potassium ore contains readily sludgable water-insoluble silicate–carbonate impurities which actively adsorb cation collectors (primary alkylamines) used in sylvine flotation. This fact determines inclusion of multistage de-sludging flowsheets, with rougher and cleaning flotation of sludge in the processing technology. A prerequisite for flotation de-sludging of ore is pre-flocculation of sludge. Flotation of sludge in mechanical flotation machines is carried out with intensive mechanical stirring of the suspension, which impairs the selective separation of sludge into the flotation froth and

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