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Tesi sul tema "Particle size distribution"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Patel, Ketan Shantilal. "Vibro-spring particle size distribution analyser." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252097.

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2

Darley, A. D. "Particle size distribution effects in chocolate processing." Thesis, University of Bradford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253973.

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3

Ip, Trevor Tsz-Leung. "Influence of particle size distribution on fluidized bed hydrodynamics." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27891.

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Past literature has shown that the production efficiency of a fluidized bed can be affected by changing the particle size distribution. The hydrodynamics of fine particle fluidization were studied with FCC and glass bead powders which have different surface-volume mean particle diameter (40-110 μM) and particle size distributions (narrow cut, wide cut and bimodal) under ambient conditions. Increasing the mean particle size increases the minimum fluidization velocity, minimum bubbling velocity and dense phase velocity (U[sub d]) while decreasing the voidages at minimum fluidization and minimum

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4

Jahanzad, Fatemeh. "Evolution of particle size distribution in suspension polymerisation reactions." Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/10300.

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Suspension polymerisation processes are commercially important for the production of polymer beads having wide applications. Polymers produced by suspension polymerisation can be directly used for particular applications such as chromatographic separations and ion-exchange resins. Particle Size Distribution (PSD) may appreciably influence the performance of the final product. Therefore, the evolution of PSD is a major concern in the design of a suspension polymerisation process. In this research, methyl methacrylate (MMA) has been used as a model monomer. A comparative study of MMA suspension

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5

Salimi, Farhad. "Characteristics of spatial variation, size distribution, formation and growth of particles in urban environments." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/69332/1/Farhad_Salimi_Thesis.pdf.

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This thesis is the first comprehensive study of important parameters relating to aerosols' impact on climate and human health, namely spatial variation, particle size distribution and new particle formation. We determined the importance of spatial variation of particle number concentration in microscale environments, developed a method for particle size parameterisation and provided knowledge about the chemistry of new particle formation. This is a significant contribution to our understanding of processes behind the transformation and dynamics of urban aerosols. This PhD project included exte

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6

Zhang, Shuo. "Relationship between particle size distribution and porosity in dump leaching." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63383.

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Fluid flow is a critical process involved in the valuable metals extraction from low grade ore in heap and dump leaching as well as the release of harmful substances from waste rock piles. The mechanisms by which fluids move through the porous media depend on the fluid properties and the intrinsic properties of the porous media, with permeability being one critical factor. Particle size distribution is a key factor that affects permeability by forming pores of different structure and size. The objective of this research was to assess the particle size distribution in heterogeneous packed ore/r

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7

Leng, Tianyang. "Cellulose Nanocrystals: Particle Size Distribution and Dispersion in Polymer Composites." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/34073.

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This thesis describes the characterization of the particle size distribution of cellulose nanocrystals (CNC), the synthesis and characterization of fluorescent CNCs, and the development of a fluorescence microscopy method to probe the distribution of fluorescent CNCs in polymer composites. In this thesis, several methods are used to characterize the size of CNC particles. Size distribution measurements by single particle counting methods (Transmission electron microscopy, Atomic force microscopy) are compared to an ensemble method, Dynamic lighting scattering (DLS) and differences between the

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8

Hildebrand, Erin N. "The effect of particle size distribution on spectral backscattering coefficient." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0015/MQ57296.pdf.

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9

Gursky, Barry Michael. "Particle size distribution optimization of filler content in shingle asphalt." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/20989.

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10

Rekhibi, Soliman Abograra. "Condition monitoring of mining machinery using debris particle size distribution." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335821.

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11

Cheung, Hing Cho. "Study of new particle formation in subtropical urban environment in Brisbane, Australia." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/60045/1/Hing_Cho_Cheung_Thesis.pdf.

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Atmospheric ultrafine particles play an important role in affecting human health, altering climate and degrading visibility. Numerous studies have been conducted to better understand the formation process of these particles, including field measurements, laboratory chamber studies and mathematical modeling approaches. Field studies on new particle formation found that formation processes were significantly affected by atmospheric conditions, such as the availability of particle precursors and meteorological conditions. However, those studies were mainly carried out in rural areas of the northe

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12

Zhang, Yanmin. "A study of suspension polymerisation of Methyl Mathacrylate and Styrene in a batch oscillatory baffled reactor." Thesis, University of Strathclyde, 1998. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=22173.

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One of the most important issues in suspension polymerisation process is the control of the final particle size distribution (PSD) as this is an indicator for both quality and financial matters. For polymer manufacturers, a narrow PSD is always welcome. The conventional reactors, e. g. stirred tank reactors, generally produce particles of a rather broad PSD. As a result, to explore a new type of polymerisation devices becomes a challenging task. The objectives of this PhD study are to apply a novel mixing apparatus, the oscillatory baffled reactor (OBR), to batch polymerisation of MMA and Styr

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13

Tileti, Pramod Reddy. "Moldability of MIM feedstocks with varying particle size distribution and shape." Thesis, KTH, Materialvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123691.

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14

Ukeje, Michael Anayo. "Effect of particle size distribution on the rheology of dispersed systems." Thesis, Imperial College London, 2000. http://hdl.handle.net/10044/1/7492.

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15

VIZCARRA, GINO OMAR CALDERON. "EFFECT OF PARTICLE-SIZE-DISTRIBUTION ON MECHANICAL BEHAVIOR OF RAILWAY BALLAST." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=29913@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>O efeito da granulometria no comportamento mecânico do lastro tem sido estudado por vários pesquisadores. A revisão destes estudos indicou que uma granulometria mais uniforme que as atualmente usadas pela indústria ferroviária diminuiria a deformação permanente e a degradação do lastro ferroviário. Neste estudo, foi utilizado o equipamento prismoidal triaxial cíclico, projetado

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16

Vazirizadeh, Ali. "The relationship between hydrodynamic variables and particle size distribution in flotation." Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/25868.

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La flottation industrielle est un procédé continu qui se déroule souvent en plusieurs étapes et dans lequel des particules d'une espèce de minéral donnée (généralement celles d'intérêt), présentes en différentes tailles, rencontrent une grande quantité de bulles de gaz (normalement de l'air) pour produire des agrégats bulles-particules minérales, qui sont extraits du dispositif de flottation (colonne ou cellule) en tant que produit de valeur (concentré). Le contenu en bulles est décrit par les conditions hydrodynamiques régnant dans le réacteur de flottation. Celles-ci sont reconnues pour leur

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17

Bianco, Nicola. "Optimal control of particle size distribution in semi-batch emulsion polymerisation." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/7474.

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18

Sun, Guanglin. "Influence of particle size distribution on the performance of fluidized bed reactors." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/32013.

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The effect of particle size distribution (PSD) on the performance of a fluidized bed reactor was investigated using the ozone decomposition reaction, combined with the study of hydrodynamics, for fresh and spent fluid cracking catalysts, each having three particle size distributions - wide, narrow and bimodal - all with nearly the same mean diameter (60 µm), the same particle density and the same BET surface area. The superficial gas velocity was varied from 0.1 to 1.8 m/s to include the bubbling, slugging, turbulent and fast fluidization regimes. The catalytic rate constant, based on the volu

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19

Jing, Cao. "Spray diagnostics by laser diffraction." Thesis, University of Sheffield, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321852.

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20

Elmaci, Bilhan. "The detection and wear in mining machinery by debris particle size distribution." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352968.

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21

Agarwal, Pawan 1971. "Modeling the pneumatic transport of solids with a bimodal particle size distribution." Thesis, The University of Arizona, 1997. http://hdl.handle.net/10150/278610.

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Particle size distribution (PSD) plays a key role in fluidization behavior. The effect of PSD in fluidized, gas-solid mixtures is elucidated by considering two types of bimodal particle mixtures. In the first case, a mixture of "large" particles, which engage in particle-particle collisions, and "small" particles or fines, which follow the fluid streamlines, are considered. In this case, one net effect of the fines is to decrease the pressure drop required to convey a given solids flux in a riser. In the second case, a mixture of two sizes of larger particles in which collisions between like a

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22

Steward, Nigel Ian. "Influence of particle size distribution on the sintering of ceramic powder compacts." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47674.

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23

Oladewa, Adekola. "Effect of Random Particle Size Distribution on the Percolation Threshold of Composites." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1430413546.

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24

Rojas, Néstor Y. "Diesel exhaust system influences on transient particulate emissions and particle size distribution." Thesis, University of Leeds, 2001. http://etheses.whiterose.ac.uk/2292/.

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The behaviour of particulate matter emissions from a Ford XLD 4T, passengercar diesel engine through a practical exhaust system in place was investigated during transient conditions, namely cold start and fast acceleration. Particulate emissions were measured at four sampling points through the exhaust system and the changes in particulate total mass concentration, total number concentration, particle size distribution and Carbon/SOF fractions were determined for various engine operating conditions. Each cold start test consisted of a step-change cold-start with fast acceleration, reaching one

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25

Svoboda, Svetozár. "Vyhodnocení kontaminace pracovního prostředí aerosoly řezných kapalin při soustružení kovů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318769.

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The thesis deals with the contamination of the workspace with a liquid aerosol, which is generated by scattering and evaporation of the cooling fluid. Cooling fluid are primarily intended to lubricate, cool and clean the tool and the workpiece, but the unwanted side effect is the formation of a liquid aerosol that holds in the air of the workspace. In such a contaminated work environment, the operator is exposed to a certain dose of a liquid aerosol that causes dermatological and respiratory problems. The topic of the thesis was to find out the number of particles of liquid aerosol that arises

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26

Chowdhury, Raziya Sultana. "Size distribution and source apportionment of airborne particulate matter." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/226864/1/Raziya%20Sultana_Chowdhury_Thesis.pdf.

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The study investigated the viability of employing a receptor modelling technique to characterize the sources of atmospheric aerosols from different air quality datasets. Chemical speciated datasets from two Brisbane sites; particle size distribution and organic mass spectral data from Garden Island, Western Australia have been analysed. The investigation produced quantitative information about the nature of the dominant primary and secondary emission sources of atmospheric aerosols at the study sites. Such information can aid air quality management.

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27

Vivaldo-Lima, Eduardo. "Development of an effective model for particle size distribution in suspension copolymerization of styrene/divinylbenzene." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/NQ42885.pdf.

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28

Wangsa-Wirawan, Norbertus Djajasantosa. "Physicochemical properties of protein inclusion bodies." Title page, contents and introduction only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phw2465.pdf.

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Bibliography: leaves 182-198. Improvements in the current production system of inclusion bodies and the downstream processing sequence are essential to maintain a competitive advantage in the market place. Optimisation of fermentation is considered to improve production yield; then flotation as a possible inclusion body recovery method.

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29

Renzi, Danielle. "Effects of Solids Loadings and Particle Size Distribution on Siphon Ceramic Candle Filters." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3307.

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In the rural areas of Madagascar only 29% of the population has access to clean water and 10% has access to improved sanitation. It has been estimated that environmental risk factors, such as inadequate access to clean drinking water and proper sanitation, are responsible for 94% of the diarrheal disease burden. This study was focused on testing a point-of-use technology called the Tulip filter, which is a siphon ceramic candle filter impregnated with silver. The purpose is to assess its feasibility for implementation in rural regions of Madagascar through a laboratory study performed at the U

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30

Wanogho, S. O. "The forensic analysis of soils with particular reference to particle size distribution analysis." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381113.

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31

Ngeacharernkul, Pratak. "Particle size distribution (PSD) equivalency using novel statistical comparators and PBPK input models." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5973.

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For disperse system drug formulations, meaningful particle size distribution (PSD) comparators are essential in determining pharmaceutical equivalency and predicting biopharmaceutical equivalence in terms of the effect of particle size on the rate and extent of drug input. In formulation development and licensure, particle size characterization has been applied to establish relationships for bioequivalence of generic pharmaceutical drug products. The current approaches recommended by the US-FDA using median and span are not adequate to predict drug product performances or account for multi-mod

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32

Bäckebo, Markus. "The influence of particle size distribution on bio-coal gasification rate as related to packed beds of particles." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79084.

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This thesis is a part of a collaboration between Höganäs AB and Luleå University of Technology, aiming at replacing fossil process coal with bio-coal in their sponge iron process. The difference in gasification reactivity, i.e. reaction rate, between fossil coals and bio-coals is the major challenge in the endeavor to decrease the climate impact of the existing process. The goal of this thesis is to develop a model of reaction rate for bio-coals in relation to particle size distribution. Different particle size distributions were combined and tested to see how that affects the effective reacti

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33

Marquet, Richard. "Low-rate trickling filter effluent : characterisation and crossflow filtration." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/27897.

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The low-rate trickling filter is the most common biological treatment process used in small and medium sized sewage works in the UK. It produces an inconsistent effluent quality, which has traditionally been related to seasonal changes in solids accumulation, grazing activity and sloughing of microbial film. The final effluent solids and, organic matter content is then too high for discharge or reuse. Given the increasingly stringent effluent standards, both in terms of quality and consistency, tertiary treatment is often required. This study was designed to investigate the key parameters affe

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34

Wright, Matthew Darren. "Submicron particle size distribution and charge state in urban areas using mobility particle sizers : measurements and instrumentation considerations." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544324.

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35

Rydefalk, Staffan. "Particle Measurements Using Fluctuations in the Regular Transmittance of Light Through a Particle Dispersion : Concentration and Particles size - Theory, Measurement Principles and Applications for Pulp and Paper Production." Doctoral thesis, KTH, Industriell produktion, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10639.

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The regular transmittance of light or similar radiation through a flowing suspension of particles fluctuates because of the random occurrence of particles in the beam.In the work presented here, a theory for this fluctuating behaviour with the emphasison dispersions of mm-length slender cylindrical particles having circular crosssections is given. The particles in question are wood pulp fibres, which as a first approximation are considered to have a cylinder shape. Four possible measurementprinciples are described theoretically and experimentally. The four principles are for the measurement of

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36

Davis, P. Garland. "The effect of particle size distribution on the rheology of ultrafine coal-water slurries." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/104316.

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37

Williams, Diane Keith. "Particle Size Dependence on the Luminescence Spectra of Eu3+:Y2O3 and Eu3+:CaO." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/29719.

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Since the Eu3+ ion can occupy different cation sites in a host material, it can serve as a useful probe of nanocrystalline structures to gain more insight into the structural changes that can occur when the particle size is reduced from the bulk to nanometer regime. The use of laser spectroscopy to probe two nanocrystalline structures, Eu3+:Y2O3 and Eu3+:CaO, was investigated. The nanocrystalline structures were prepared by the laser-vaporization-gas-phase condensation of the bulk oxides. The particle size distribution and dominant particle diameters of the nanocrystals were determined by

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38

Dalecky, Amanda Lee. "Particle Size Distribution Analysis of a Mining-Impacted Gravel-Bed Stream in Ohio Using a Hybrid Sediment Sampling Technique." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/35721.

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As part of a risk assessment study of the Leading Creek Watershed in Ohio, a prior Virginia Tech researcher collected pavement and subpavement sediment samples at 17 sites using the hybrid areal sampling technique with a clay adhesive. The watershed, which is heavily impacted by mining and agricultural activities, suffers from low pH, high concentrations of metals and sediment in the water column, and excessively silted streambeds. The current work presents the results of the particle size analyses performed on the hybrid samples in the context of evaluating the effectiveness of the techniqu

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39

Bekiswa, Sisanda Ongeziwe. "Characterising South Africa’s major dust sources." Master's thesis, Faculty of Science, 2019. http://hdl.handle.net/11427/31241.

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The study investigates the surface controls of major dust emissions and determines the patial distribution of major dust source in South Africa. This study follows a multi-disciplinary approach where primary and secondary data were used. The main objective of the study is to determine the spatial distribution of South Africa's Major Dust Sources. Meteosat Second Generation (MSG) satellite imagery, land use and land cover maps were used to achieve the first and the second objectives of the study. Primary data involved sampling 30 soil samples in the field in order to achieve the third objectiv

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40

Elzey, Sherrie Renee. "Applications and physicochemical characterization of nanomaterials in environmental, health, and safety studies." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/494.

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As commercially manufactured nanomaterials become more commonplace, they have the potential to enter ecological and biological environments sometime during their lifecycle of production, distribution, use or disposal. Despite rapid advances in the production and application of nanomaterials, little is known about how nanomaterials may interact with the environment or affect human health. This research investigates an environmental application of nanomaterials and characterizes the physicochemical properties of commonly manufactured nanomaterials in environmental health and safety studies. Char

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Kornilin, Dmitriy V. "Investigation of size, concentration and particle shapes in hydraulic systems using an in-line CMOS image matrix sensor." Thesis, University of Chester, 2018. http://hdl.handle.net/10034/621947.

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The theoretical and experimental investigation of the novel in-line CMOS image sensor was performed. This sensor is aimed to investigate particle size distribution, particle concentration and shape in hydraulic liquid in order to implement the proactive maintenance of hydraulic equipment. The existing instruments such as automatic particle counters and techniques are not sufficiently enough to address this task because of their restricted sensitivity, limit of concentration to be measured and they cannot determine particle shape. Other instruments cannot be used as inline sensors because they

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42

Thorvaldsen, Gary Sven. "The effect of the particle size distribution on non-Newtonian turbulent slurry flow in pipes." Thesis, Cape Technikon, 1996. http://hdl.handle.net/20.500.11838/896.

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Thesis (MTech (Chemical Engineering))--Cape Technikon, Cape Town,1996<br>The handling of solid-liquid suspensions is an important concern within the chemical and processing industries and many theoretical models have been proposed to try and explain and predict turbulent flow behaviour. However, the prediction of turbulent flow from only the viscous properties of non-Newtonian suspensions has over the years been questioned by researchers. This thesis considers theoretical models well established in the literature and the Slatter model, which uses both the rheology of the suspension and th

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43

Praechter, Todd A. "Affect of Emission Controls on the Elemental Concentration and Particle Size of Coal Ash." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196568.

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44

Arabgol, Raheleh. "MBBR Produced Solids: Particle Characteristics, Settling Behaviour and Investigation of Influencing Factors." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41919.

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The separation of solids from biological wastewater treatment is an important step in the treatment process, as it has a significant impact on effluent water quality. The moving bed biofilm reactor (MBBR) technology is a proven upgrade or replacement wastewater treatment system for carbon and nitrogen removal. However, a challenge of this technology is the characteristics of the effluent solids that results in their poor settlement; with settling being the common method of solids removal. The main objective of this research is to understand and expand the current knowledge on the settling char

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45

Cao, Zihan. "Determination of Particle Size Distribution of Particulate Matter Emitted from a Layer Operation in Southeast U.S." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-07302009-201630/.

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This thesis reports a field study on characterizing particle size distribution (PSD) of particulate matter (PM) emitted from a commercial layer operation in the Southeastern U.S. across three seasons from October of 2008 to April of 2009. Six low-volume (1m3/h) total suspended particulate (TSP) samplers were used to collect PM samples in two high-rise layer houses. A laser diffraction particle size analyzer (LS13 320) at North Carolina State University (NCSU), a laser scattering particle size analyzer (LA-300) at University of Illinois at Urbana-Champaign (UIUC) and a Coulter Counter Multisize

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46

Brennan, William Dennis. "The effects of nozzle geometry on particle size distribution in a small two dimensional rocket motor." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/25882.

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47

Rajabi-Hamane, Mehdi [Verfasser]. "Modeling, Validation and Time Optimal Control of Particle Size Distribution in Emulsion Polymerization / Mehdi Rajabi-Hamane." Aachen : Shaker, 2007. http://d-nb.info/1166511340/34.

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48

Afoakwa, Ohene Emmanuel. "Dark chocolate : effects of particle size distribution and composition on physical qualities and flavour volatiles release." Thesis, University of Strathclyde, 2008. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=24296.

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Abstract (sommario):

Rheological, texture and melting properties of dark chocolates were studied varying particle size distribution (PSD) [D₉₀ (90% finer than this size) of 18, 25, 35 and 50 µm], fat (25, 30 and 35%) and lecithin (0.3 and 0.5%) contents. Fat pre-crystallisation systems during tempering and fat bloom development were also investigated, and influences on product microstructure, texture, appearance (colour and gloss) and melting characteristics elucidated. Flavour volatile release from varying product matrices were characterised and quantified. Rheological, textural and melting properties were examin

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49

Dabak, Turgay. "Formulation of the particle size distribution effects on the rheology and hydraulics of highly-concentrated suspensions." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/74729.

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Abstract (sommario):

A formulation was developed for the rheological characterization of highly concentrated suspensions, accounting for the physical effects of particle size distribution. A number of dimensionless parameters were developed signifying the physical characteristics of the solids and the vehicle fluid, and functionally related to the yield-stress and a flow parameter. Each of these expressions of the formulation contains an empirical dimensionless coefficient accounting for the interparticle and fluid/solid interactions that are not explained by the physical parameters involved. A formulation and a m

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50

Kuo, Ching-Jey. "FACTORS AFFECTING PARTICLE GROWTH AND RELATED ORGANIC MATTER REMOVAL DURING ALUM COAGULATION (SIZE DISTRIBUTION, TRIHALOMETHANES, HUMIC)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183866.

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Abstract (sommario):

Effects of several important source-related and operation-related factors on particle formation and growth as well as potential particle and dissolved organic matter removal by alum coagulation are described. Two representative natural water sources, with low turbidities and high concentrations of dissolved organic matter, and one commercially available crystalline silica, with defined characteristics, were employed to establish initial aquatic particle and dissolved organic matter conditions. Six experimental variables utilized for evaluation include initial pH, initial turbidity, applied pre

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