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Dissertations / Theses on the topic 'Granulation'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Lee, Kai Teck. "Continuous granulation of pharmaceutical powder using a twin screw granulator." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4002/.

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Twin screw extruder (TSE) has been studied extensively as a granulator because it allows continuous processing. Initial work was carried out by comparing the TSE with conventional granulator shows that the mechanism of TSE granulation is different from conventional granulation with the absence of the consolidation stage. PEPT was also utilised and it reveals that the flow stream of the material is not only due to the conveying capacity but also the granulator fill, in particularly for the 90o mixing zone which is believed to be a dispersion type of mechanism driven by the granulator fill gradi
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2

Vialatte, Lilian. "Mécanismes de granulation : application à la granulation par agitation mécanique." Compiègne, 1998. http://www.theses.fr/1998COMP1097.

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Notre travail s'est fixé deux objectifs principaux, d'une part, de mieux comprendre les mécanismes de granulation, et d'autre part, de dégager la signature technologique du mélangeur rapide. L'outil de granulation choisi est un mélangeur à taux de cisaillement élevé Lödige d'échelle laboratoire. Plusieurs systèmes poudre-liant ont été étudiés : deux granulométries d'une même poudre, une alumine SH100 et une alumine SH30, et divers liquides : eau, solutions aqueuses de polyéthyléneglycol, et une solution aqueuse d'un alcool polyvinylique. Nous avons mis en évidence un profil de granulation à 3
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3

Braumann, Andreas. "Multidimensional modelling of granulation." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609355.

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4

Yusof, Yus Aniza. "Rolling-mill granulation of powders." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424466.

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5

Scott, Alison Catherine. "Heterogeneity in high-shear granulation." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621989.

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6

Chollet, Thierry. "Optimisation des rendements en granulation." Bordeaux 2, 1994. http://www.theses.fr/1994BOR2P077.

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7

Gaillard, Claude. "Gélatines, pouvoir liant et granulation." Université Joseph Fourier (Grenoble), 1990. http://www.theses.fr/1990GRE18011.

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8

Склабінський, Всеволод Іванович, Всеволод Иванович Склабинский, Vsevolod Ivanovych Sklabinskyi та ін. "Підвищення ефективності отримання монодисперсних гранул". Thesis, Сумський державний університет, 2012. http://essuir.sumdu.edu.ua/handle/123456789/43421.

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На сьогоднішній день в хімічній промисловості для виробництва гранульованого продукту з розплавів активно використовуються обертові віброгранулятори. Але вони мають деякі недоліки: забивання отворів витікання при диспергуванні рідини з домішками, що спричиняє перетин траєкторії руху крапель та їх об’єднання, порушуючи гранулометричний склад продукту, вони не можуть працювати в широкому діапазоні навантажень по розплаву. У даній роботі розглянуто один із варіантів усунення зазначених недоліків, шляхом підвищення швидкості витікання рідини з отворів пристрою.
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9

Tan, Hong Sing. "Kinetics of fluidised bed melt granulation." Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419292.

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10

Ai, Qing. "Twin screw granulation : granule property optimisation." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/20916/.

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This thesis aims to design granule properties with narrower size distributions and controlled bulk strength through the optimisation of formulation parameters and processing parameters in twin screw granulation with a consideration of binder in solid and liquid forms, respectively. In this thesis, lactose (soluble) and microcrystalline cellulose (insoluble) were chosen as the objective powders. Hydroxypropyl cellulose was used as the main binding excipient. From a perspective of formulation development, a novel approach to predict the optimal L/S ratio for twin screw granulation was developed
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11

Defaut, Jean-Luc. "Étude comparative des méthodes de granulation." Nantes, 1985. http://www.theses.fr/1985NANT351P.

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12

MacGinley, Robert. "Granulation tissue as a vascular graft /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16819.pdf.

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13

Yu, Xi. "An in-silico model of granulation." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2260/.

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14

Dhenge, Ranjitkumar. "Twin screw granulation : a detailed study." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2227/.

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15

Zhai, Hui. "Investigation and application of fluidised hot melt granulation (FHMG) as a novel granulation technique to process pharmaceutical materials." Thesis, Queen's University Belfast, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534688.

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16

Djuric, Dejan. "Continuous granulation with a twin-screw Extruder." Göttingen Cuvillier, 2008. http://d-nb.info/989861163/04.

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17

Chua, Kel Win. "Predictive model of fluidized bed melt granulation." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505425.

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This thesis describes the development of a computer model that predicts aggregation behavior in fluidized bed melt granulation (FBMG) processes. In FBMG processes, the molten binder enters at one or more points and is then distributed around the bed, these processes are necessarily spatially inhomogeneous. Current granulation modelling using Population Balance Equations (PBE) adopts a lumped approach, using a single lumped rate constant. This thesis shows how to take account of these spatially distributed processes and then predicted the apparent lumped rate constant. The first half of this th
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18

Campos, Claudio Milton Montenegro. "Physical aspects affecting granulation in UASB reactors." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278700.

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19

Varghese, Honey. "Modeling De Novo Granulation of Anaerobic Sludge." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/5878.

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The enigma of anaerobic sludge granulations is still exciting the minds of both experimental scientists and modeling experts. A unique combination of mechanical, physiochemical and biological forces influence granulation during processes of anaerobic digestion. However, knowledge of potential driving forces of granulation has not been transformed into a comprehensive model of anaerobic granulation. In this computational experiment, we address the role physiochemical and biological processes play in granulation and provide a literature-validated working model of anaerobic granule de novo format
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20

Маренок, Віталій Михайлович, Виталий Михайлович Маренок та Vitalii Mykhailovych Marenok. "Удосконалення грануляційного обладнання для вдосконалення технології виробництва гранульованих продуктів". Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40279.

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21

Артюхов, Артем Євгенович, Артем Евгеньевич Артюхов, Artem Yevhenovych Artiukhov, Андрій Миколайович Демченко, Андрей Николаевич Демченко та Andrii Mykolaiovych Demchenko. "Вплив динаміки руху дисперсної фази на розміри грануляційних веж". Thesis, Сумський державний університет, 2012. http://essuir.sumdu.edu.ua/handle/123456789/43432.

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Гідродинаміка руху висхідного газового потоку і краплі (гранули) в ньому значною мірою впливає на якість готового продукту та розміри сучасних грануляційних веж. Аналіз зовнішніх сил, які діють на дисперсну фазу, і внутрішніх напружень, що виникають в ній, дозволяють спрогнозувати умови її деформації, руйнування, траєкторію руху і час перебування в об’ємі грануляційної вежі. Вибір оптимального гідродинамічного режиму руху суцільної і дисперсної фаз дозволить ефективно використовувати існуючі конструкції грануляційних веж та створювати нові зі зменшеними габаритами .
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22

Reynaud, Stéphan. "Granulation humide, humidité résiduelle, et validation : étude d'un transfert entre deux appareils évaluant l'humidité résiduelle d'un granulé en cours de production : étuve et thermobalance à source halogène de type HR73." Bordeaux 2, 1999. http://www.theses.fr/1999BOR2P037.

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23

Maurstad, Ola. "Population Balance Modeling of Agglomeration in Granulation Processes." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-123.

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<p>Agglomeration (the sticking together of particles) is often the major growth mechanism in granulation processes. The population balance equation (PBE) is a mathematical framework that is often applied to systems to describe how the particle size distribution changes as a function of time. Different kinetic terms are included in the PBE to describe the different particle growth mechanisms. In this work, a new kinetic model framework is proposed for the growth mechanism binary agglomeration. Binary agglomeration means that only two particles are involved in an agglomeration event. The general
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24

Nilpawar, A. M. "Kinematics and collision kinetics in high shear granulation." Thesis, University of Sheffield, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506744.

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25

Sooben, Kevin. "Modelling high shear granulation using artificial neural networks." Thesis, University College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419923.

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26

Hodgson, Daniel James Matthew. "Particulate granulation and rheology : towards a unifying perspective." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/23651.

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The mixing of powders and liquids is a process ubiquitous to many industrial, research and household applications, from the production of foodstuffs, pharmaceutical and cosmetic products to the preparation of hot drinks or cement. The final mixed state of powders and liquids can be broadly split into two distinct regimes identified respectively as having low- and high volume fraction, ∅. Low-∅ systems are typified by flowing suspensions whereas samples prepared with high-∅, beyond some threshold value, produce solid agglomerates which are unable to flow. These two regimes are the focus of two
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27

Pearson, Judith Margaret Katharine. "The kinetics and modelling of high-shear granulation." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624282.

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28

Neilson, Hilding, and Richard Ignace. "Convection, Granulation, and Period Jitter in Classical Cepheids." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etsu-works/6243.

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Analyses of recent observations of the sole classical Cepheid in the Kepler field, V1154 Cygni, found random changes of about 30 min in the pulsation period. These period changes challenge standard theories of pulsation and evolution because the period change is non-secular, and explaining this period jitter is necessary for understanding stellar evolution and the role of Cepheids as precise standard candles. We suggest that convection and convective hot spots can explain the observed period jitter. Convective hot spots alter the timing of flux maximum and minimum in the Cepheid light curve, h
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29

Calogerà, Giacomo <1976&gt. "An Investigation Into the Pharmaceutical Melt Granulation Technology." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2939/1/Caloger%C3%A0_Giacomo_tesi.pdf.

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30

Calogerà, Giacomo <1976&gt. "An Investigation Into the Pharmaceutical Melt Granulation Technology." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2939/.

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31

Del, Bene Luca <1988&gt. "Virtual prototyping of pharmaceutical granulation and coating equipment." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8356/1/PhD_Thesis_Luca_Del_Bene_XXX_AMS.pdf.

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A virtual prototyping methodology for pharmaceutical granulation and coating has been developed. Application of the Multiphase Particle In Cell method (MP PIC) allowed to simulate two phases gas solid flow that occurs in granulation and coating equipment. The computational performance of MP PIC model is very high. The use of CPFD® Barracuda VR™, which implements the MP PIC model, was validated against literature experimental and CFD DEM data, showing its critical points. Barracuda VR™ overestimates the particle transport, but, at the same time, it captures the major trends in the considered ph
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32

Rosso, Michel. "Conduite automatisée de procédés à variables floués commandés à partir de règles." Nancy 1, 1990. http://www.theses.fr/1990NAN10343.

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L'étude concerne l'automatisation d'une installation industrielle de granulation d'engrais. Une étude bibliographique montre tout d'abord la pauvreté des travaux déjà réalisés dans ce domaine, ceci en raison de la complexité et de la méconnaissance des phénomènes de granulation. La régulation de la granulométrie, principal objectif de l'étude, a été atteinte par une succession d'étapes. La stabilisation de l'installation a permis dans un premier temps de créer un nouveau mode de fonctionnement dans lequel les valeurs et les variations des variables mesurées sont représentatives de la granulomé
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33

Gauthier, Carol. "Étude du mouvement granulaire dans un cylindre en rotation /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1991. http://theses.uqac.ca.

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34

Vanneste-Ibarcq, Clément. "Study of biomass powders in the context of thermal recovery processes." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2018. http://www.theses.fr/2018EMAC0019/document.

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Certains procédés de production d’énergie nécessitent l’utilisation de poudres de biomasse, par exemple la gazéification en réacteur à flux entraîné (RFE). Cependant, les poudres de biomasse ont une mauvaise coulabilité. L’objectif de cette thèse est d’étudier leurs propriétés d’écoulement dans le contexte de la gazéification en RFE, à l’échelle du laboratoire et à l’échelle pilote. A l’échelle du laboratoire, des mesures en tambour rotatif, des tests de cisaillement et des mesures de densité ont été effectués. D’une part, une corrélation est mise en évidence entre la cohésion (issue des tests
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35

Yliniemi, J. (Juho). "Alkali activation-granulation of fluidized bed combustion fly ashes." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526215624.

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Abstract Biomass, such as wood, binds CO2 as it grows, and is thus considered an environmentally friendly alternative fuel to replace coal. In Finland, biomass is typically co-combusted with peat, and also municipal waste is becoming more common as a fuel for power plants. Wood, peat and waste-based fuels are typically burned in fluidized bed combustion (FBC) boilers. Ash is the inorganic, incombustible residue resulting from combustion. The annual production of biomass and peat ash in Finland is 600 000 tonnes, and this amount is likely to increase in the future, since the use of coal for ene
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36

Leong, Jason. "Aerobic granulation with low pH, low alkalinity municipal wastewater." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50666.

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Aerobic granulation was successfully achieved using municipal wastewater with supplemental carbon addition, after a 166 day start-up period. During the start-up period, an increase in biomass particle size was noticed that correlated to a stepwise reduction in settling and decant time. During this time, the granular type formation had a fluffy structure with noticeable filamentous outgrowths. On the 82nd day of start-up, supplemental carbon, in the form of sugar, was added to the feed tank to increase the Organic Loading Rate (OLR) of the system. In addition to an increase in COD, a pH and alk
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37

Maxim, Robert E. "Designing granules for abrasive cleaning (using high-shear granulation)." Thesis, University of Sheffield, 2006. http://etheses.whiterose.ac.uk/14898/.

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This work investigates the granulation of fine calcium carbonate powder to form microgranules (less than lOOf.lll1). The influence offormulation and operating conditions on granule properties was investigated. This work analyses experimental data using a database approach to relate granulation conditions to granule properties, to fmd propertyto-property relationships and to investigate the influence on the abrasion of Perspex. It was found that the granulation was undertaken in an unstable regime dictated by the need to produce small granules. As a result, it was not possible to achieve reprod
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38

Prudat, Claire. "Comprimés bioadhésifs d'aminophylline obtenus par granulation par voie humide." Paris 5, 1994. http://www.theses.fr/1994PA05P137.

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39

Laveix, Michel. "Etude pilote de la granulation en lit d'air fluidisé." Paris 5, 1988. http://www.theses.fr/1988PA05P141.

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40

Perez-Gandarillas, Lucia. "Dry granulation process and compaction behavior of granulated powders." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0021/document.

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Les solides divisés telles que les poudres pharmaceutiques nécessitent souvent des processus d'agrandissement de taille par agglomération pour améliorer leur comportement mécanique, notamment la coulabilité. Pour cette raison, le procédé de "granulation en voie sèche" est utilisé dans l'industrie pharmaceutique. Le procédé consiste à comprimer la poudre en la faisant passer entre deux rouleaux séparés par un entrefer, pour produire des plaquettes qui sont ensuite broyées en granulés et comprimés en compacts. Dans ce procédé, l'existence de différents modèles de compacteurs à rouleaux et de sys
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41

Cavinato, Mauro. "High shear wet granulation: process understanding and scale up." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427414.

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Among all the powder agglomeration processes, high shear wet granulation is one of the most commonly used techniques. It consists of the agglomeration of different powders through the addition of a granulating fluid and a vigorous mixing. Industries often turn to high shear granulation mainly to avoid segregation of critical components in a powder mixture, improve flowability and compactibility. Despite the great importance of this technique in many industrial activities, it is not totally clear how changes in the initial powder mixture or in process variables can affect the final product prop
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42

Ярошенко, Д. О. "Моделювання процесу керування грануляцією азотних добрив". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86704.

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В роботі було визначено контури керування. Створено математичні моделі контурів керування температурою та вологою для дослідження на такі параметри як: час перехідного процесу та точність регулювання. Розроблено систему керування хаосом у процесі гранулювання. Проведено розрахунок оптимального програмного керування для системи рівнянь у програмному пакеті Matlab.
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Locardel-Rietzler, Joëlle. "Recherche de nouveaux liants polymères substituts du PEG dans le procédé de granulation par fusion." Montpellier 1, 2000. http://www.theses.fr/2000MON13510.

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44

Cheung, Ka-wai Eva. "Granulin expression in basal-like breast cancer." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40738395.

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45

Smirani, Nadia Marchal-Heussler Laurent Falck Véronique. "Etude cinétique du procédé de granulation humide en mélangeur à haut cisaillement." S. l. : INPL, 2008. http://www.scd.inpl-nancy.fr/theses/2008_SMIRANI_N.pdf.

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46

Pont, Véronique. "Contribution à l'étude de la granulation des poudres en lit fluidisé : influence des paramètres du procédé et physico-chimiques sur la cinétique de granulation." Toulouse, INPT, 2000. http://www.theses.fr/2000INPT011G.

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Cette etude est consacree a la granulation de particules solides en lit fluidise discontinu par la pulverisation de solutions aqueuses de liants (polymeres ou sels mineraux). Outre la comprehension des phenomenes qui se produisent a l'echelle globale, l'objectif essentiel de ce travail est de mieux comprendre l'influence des phenomenes qui se produisent a l'echelle locale sur la cinetique de croissance et sur la resistance mecanique des agglomerats formes. Nous avons donc etudie l'influence des parametres lies au procede (vitesse de l'air de fluidisation, debit de la solution liante, concentra
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47

Lamprecht, Corne. "UASB granulation enhancement by microbial inoculum selection and process induction." Thesis, Stellenbosch: University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1477.

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Thesis (PhD (Food Science))--University of Stellenbosch, 2009.<br>In the absence of anaerobic granules, anaerobically digested sewage sludge is frequently used to seed industrial upflow anaerobic sludge blanket (UASB) reactors. Because of its flocculent nature, start-up with digested sludge instead of granular sludge proceeds much slower and presents various operational problems. Any manner in which the granulation of digested sludge can be enhanced would benefit UASB reactor start-up and application in developing countries such as South Africa. The main objective of this dissertation was to
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48

Smirani, Nadia. "Etude cinétique du procédé de granulation humide en mélangeur à haut cisaillement." Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL021N/document.

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Au cours de cette étude du procédé de granulation humide, nous avons mis l’accent sur l’intérêt que présente la distribution du liquide de mouillage dans la définition des propriétés finales de grains. Dans ce cadre, une méthode utilisant un traceur a été développée pour le suivi cinétique de la répartition du liquide de mouillage au cours de la granulation. Une formulation à base d’excipent pharmaceutique a été granulée dans un mélangeur-granulateur à haut cisaillement Mi-Pro. On a pu ainsi montrer que le début du procédé est caractérisé par l’hétérogénéité de la distribution du liquide de mo
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49

Chan, Ei Leen. "High shear granulation : a study of blade-granule bed interactions." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/3205/.

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Wet granulation, a common unit operation in multiple industries, involves the production of "granules" which are assemblies of primary particles held together by interparticle bonds. Depending on the application, granules with the required attributes such as enhanced strength, flowability, dissolution properties or uniform composition, can be manufactured. It is widely accepted in granulation research that the wet granulation process is comprised of several competing rate processes that dictate the granule growth behaviour and ultimately the granule attributes. In the micro-scale models develo
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50

Williams, Jon Christopher. "Initial Investigations of Aerobic Granulation in an Annular Gap Bioreactor." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-04172005-142501/.

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Abstract:
This research describes the design, construction, and characterization of a novel annular gap bioreactor. The bioreactor was conceived as a tool for the shear-based control of activated sludge floc particle size in batch and continuous-run experiments. Initial experiments on the feasibility of cultivating aerobic granular sludge in the bioreactor are described. The bioreactor was found to experience turbulent Taylor vortex flow, rather than laminar Couette flow, at all rotational speeds tested. This flow regime is the result of inner cylinder rotation. Despite turbulent flow conditions, the bi
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