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Dissertations / Theses on the topic 'Flocculate'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Cavazzana, Tarso Luís. "Ampliação de escala de um floco decantador de manta de lodo no tratamento de água de abastecimento /." Ilha Solteira : [s.n.], 2006. http://hdl.handle.net/11449/98093.

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Orientador: Tsunao Matsumoto<br>Banca: Edson Pereira Tangerino<br>Banca: Marcelo Libânio<br>Resumo: Na busca de avanços na concepção de uma Estação de Tratamento de Água (ETA) mais eficiente construiu-se, estudou-se e testou-se um Módulo Floco Decantador de Manta de Lodo (MFDML) - escala modelo. Essa busca contou com várias etapas e processos que envolveram uma ampla e variada pesquisa bibliográfica para a formação de idéias que foram ou poderão ser colocadas em prática para melhores calibração e verificação. Os avanços no MFDML forneceram resultados que motivaram seu estudo em escala de protó
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2

Dougherty, David J. "Development of a mixing device for red mud flocculants." Curtin University of Technology, School of Mechanical Engineering, 1999. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=9922.

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The performance of flocculants used in the solid-liquid separation of red mud is often compromised by the methods used to mix the fast acting polymers into the slurry. A simple model of the relationship between flocculant performance and intensity of mixing is proposed and a device for mixing flocculant and slurry has been developed on the basis of the model.The intensity of mixing at the point of distributing the flocculant into the slurry is arguably the most important variable influencing the final flocculant performance. This relationship is established using data from flocculation tests i
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Cavazzana, Tarso Luís [UNESP]. "Ampliação de escala de um floco decantador de manta de lodo no tratamento de água de abastecimento." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/98093.

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Made available in DSpace on 2014-06-11T19:29:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-05-26Bitstream added on 2014-06-13T18:58:47Z : No. of bitstreams: 1 cavazzana_tl_me_ilha.pdf: 2979174 bytes, checksum: 3a1c33ad1723fd5eb6eef680e02d054b (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Na busca de avanços na concepção de uma Estação de Tratamento de Água (ETA) mais eficiente construiu-se, estudou-se e testou-se um Módulo Floco Decantador de Manta de Lodo (MFDML) - escala modelo. Essa busca contou com várias etapas e processos que envolveram uma ampla
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4

Hecker, Richard. "The characterisation of polyacrylamide flocculants." Curtin University of Technology, School of Applied Chemistry, 1998. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=10745.

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Polyacrylamide is widely used as a flocculant but the influence of the molecular mass distribution upon flocculant activity is poorly understood. This thesis outlines the successful characterisation of ultrahigh molecular mass polyacrylamide solutions in terms of discrete solvated polymer coils and coil agglomerates. These features were correlated with the observed flocculation, demonstrating a number of solution state features required to improve flocculation activity.Aqueous solutions of polyacrylamide exhibit time-dependant behaviour affecting viscosity and polymer agglomeration. Improving
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5

Holmqvist, Claes. "Mechanical modelling of blade forming and drainage of flocculated suspensions." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-141.

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6

Ntsangani, Nozipho. "Assessment of the flocculating efficiency of bioflocculant produced by Bacillus SP. AEMREG4 isolated from Thyume River, Eastern Cape, South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2447.

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Bioflocculants are flocculating substances produced by microorganisms during growth and have recently received considerable attention from researchers; due to their biodegradability, non-toxicity and lack of secondary pollution from degradation intermediates. This study evaluated the efficiency of bioflocculant produced by Bacillus sp. AEMREG4 isolated from Tyhume River. The bacterial identification was through 16S rDNA sequencing; nucleotide sequences were deposited in GenBank as Bacillus sp. AEMREG4 with an Accession number KP406729. The optimum culture conditions for bioflocculant productio
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7

Ntsangani, Nozipho. "Assessment of the flocculating efficiency of bioflocculant produced by bacillus sp. Aemreg4 isolated from Tyhume river, Eastern Cape, South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/d1021324.

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Bioflocculants are flocculating substances produced by microorganisms during growth and have recently received considerable attention from researchers; due to their biodegradability, non-toxicity and lack of secondary pollution from degradation intermediates. This study evaluated the efficiency of bioflocculant produced by Bacillus sp. AEMREG4 isolated from Tyhume River. The bacterial identification was through 16S rDNA sequencing; nucleotide sequences were deposited in GenBank as Bacillus sp. AEMREG4 with an Accession number KP406729. The optimum culture conditions for bioflocculant productio
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8

Esau, Arinaitwe. "Characterization of industrial flocculants through intrinsic viscosity measurements." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1399.

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The effect of pH, temperature, and ionic strength on the molecular conformation of five industrial polyacrylamide-based flocculants was investigated by determining intrinsic viscosities on dilute flocculant solutions. The Fedors equation was found to be most suitable for all flocculants for determining the intrinsic viscosity. The results indicated that the flocculants are fully extended in distilled water at natural pH and at 25°C as evidenced by the high intrinsic viscosities. The data pointed to the strong dependence of the intrinsic viscosity on the presence of salts as a result of the shi
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9

Manning, Andrew James. "Study of the effect of turbulence on the properties of flocculated mud." Thesis, University of Plymouth, 2001. http://hdl.handle.net/10026.1/491.

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10

Moschakis, Thomas. "Microstructural factors affecting the stability of viscoelastic caseinate emulsions flocculated by polysaccharides." Thesis, University of Leeds, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432338.

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11

Mattsson, Rosa. "AKD sizing - dispersion colloidal stability, spreading and sizing with pre-flocculated dispersions /." Licentiate thesis, Luleå tekniska universitet, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17236.

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Alkylketene dimer, AKD, dispersions are used in the paper industry to obtain paper grades with a hydrophobic character i.e. resistance to sorption of water. AKD is used in neutral to alkaline internal sizing, pH in the interval of 6-9. AKD dispersions consist of wax particles emulsified in water. The particles are electrostatically and in most cases also sterically stabilized by cationic polyelectrolytes. The size of the particles is usually in the range of 0.5-2 µm in diameter. The idea of having cationic particles is that they are supposed to be deposited onto the negatively charged fiber su
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12

Wootton, Louise Sarah. "Salt-flocculated organic matherial as a food source in estuarine food webs." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27750.

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Large amounts of particulate material were found to flocculate from water collected from local, organic rich streams upon addition of salt water. This material was found to compose approximately 50% humic substances and to have a C:N ratio of about 50:1. Feeding studies using floe having various degrees of bacterial colonisation showed that bacterial abundance was an important determinant of the palatability of this material to the copepod grazer, Tigriopus californicus. Palatability of flocculant particles increased linearly with increasing bacterial abundances in the range of 0-10⁶ cells • m
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Zhan, Yihong. "Latices as flocculants in selective flocculation of mineral suspensions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0020/NQ46455.pdf.

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14

Siqueira, Franciele Maboni. "Análise genômica e transcricional comparativa de Mycoplasma hyopneumoniae, Mycoplasma flocculare e Mycoplasma hyorhinis." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/143434.

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Mycoplasma hyopneumoniae, Mycoplasma flocculare e Mycoplasma hyorhinis são capazes de aderir e colonizar o trato respiratório de suínos. Enquanto a presença de M. flocculare é considerada assintomática, M. hyopneumoniae e M. hyorhynis são relacionados ao desenvolvimento de patologias. M. hyopneumoniae é o agente etiológico da pneumonia enzoótica suína e M. hyorhynis além dos pulmões pode atingir outros sítios e hospedeiros, estando relacionado a artrites, poliserosites e desenvolvimento de vários tipos de câncer em humanos. Apesar dos avanços tecnológicos na área de genômica, raros são os dado
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15

Lu, Chen Pelton Robert H. "Mechanisms of filler flocculation with PEO/cofactor dual-component flocculants /." *McMaster only, 2003.

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16

Torrealba, Sebastian Fernando. "A Continuous Mathematical Model of the One-Dimensional Sedimentation Process of Flocculated Sediment Particles." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/755.

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A new continuous one-dimensional sedimentation model incorporating a new continuous flocculation model that considers aggregation and fragmentation processes was derived and tested. Additionally, a new procedure to model sediment particle size distribution (PSD) was derived. Basic to this development were three different parametric models: Jaky, Fredlund and the Gamma probability distribution (GPD) were chosen to fit three different glass micro-spheres PSDs having average particle sizes of 7, 25 and 35 microns. The GPD provided the best fit with the least parameters. The bimodal GPD was used t
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17

Leal, Fernanda Munhoz dos Anjos. "Análise de domínios diferenciais em proteínas de superfície ortólogas de Mycoplasma hyopneumoniae e Mycoplasma flocculare." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/117887.

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Mycoplasma hyopneumoniae e Mycoplasma flocculare são duas espécies geneticamente muito similares. M. hyopneumoniae é o agente etiológico da pneumonia enzoótica suína, enquanto M. flocculare é amplamente distribuído em rebanhos suínos, mas nenhuma doença decorrente da sua presença é observada. O repertório de proteínas ortólogas compartilhadas entre estas duas espécies é de 70% e de proteínas de superfície chega em torno de 90%. Diferenças estruturais e funcionais entre as proteínas ortólogas poderiam explicar, pelo menos em parte, o caráter de patogenicidade ou não destas espécies. A fim de id
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Demers, Isabelle. "Activated silica sol as a flocculant in treatment of mine effluents." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79227.

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Lime neutralization of acidic drainage is the most common process to produce an environmentally acceptable effluent. The process involves neutralization, precipitation of metal hydroxides, flocculation, settling and storage of the sludge. The sludge is not entirely stable over the long term due to the natural pH decline in the storage area that can re-solubilize metals. The use of activated silica sol could be an alternative to flocculants in the lime neutralization process. The nature of the metal hydroxide---silica bond could make the sludge more stable on short and long term.<br>It w
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19

Lee, Byung Joon. "Experimental and modeling studies for optimizing flocculant-aided sediment retention ponds." Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1239895729/.

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Qiu, Shuyan. "NANOFIBER AS FLOCCULANT OR MODIFIER IN MEMBRABE BIOREACTORS FOR WASTEWATER TREATMENT." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1132768261.

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Coma, Bech Marta. "Biological nutrient removal in SBR technology: from floccular to granular sludge." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/32025.

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Biological nutrient removal has been studied and applied for decades in order to remove nitrogen and phosphorus from wastewater. However, more anthropogenic uses and the continued demand for water have forced the facilities to operate at their maximum capacity. Therefore, the goal of this thesis is to obtain more compact systems for nutrient removal from domestic wastewater. In this sense, optimization and long-term stabilization of high volume exchange ratios reactors, treating higher volumes of wastewater, have been investigated. With the same target, aerobic granular sludge was proposed as
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Dipp, Lauren Dornelles. "Caracterização imunológica de um par de proteínas ortólogas de superfície de Mycoplasma hyopneumoniae e Micoplasma flocculare." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/158289.

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A bactéria Mycoplasma hyopneumoniae é o agente etiológico da pneumonia enzoótica suína e se adere às células do epitélio ciliar pulmonar do hospedeiro para a colonização. Essa doença é responsável por perdas econômicas em muitos países devido à morbidade dos rebanhos. A bactéria Mycoplasma flocculare é encontrada principalmente na mucosa traqueal de suínos, como M. hyopneumoniae, mas é uma bactéria comensal. Ambas apresentam similaridades genéticas, como o compartilhamento de 90% das proteínas de superfície preditas e o perfil transcritômico dos genes que codificam adesinas, proteínas que prop
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Wheatland, Jonathan Antony Thomas. "Characterising the multi-scale properties of flocculated sediment by X-ray and focused ion beam nano-tomography." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/25984.

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The hydrodynamic behaviour of fine suspended aqueous sediments, and stability of the bedforms they create once settled, are governed by the physical properties (e.g., size, shape, porosity and density) of the flocculated particles in suspension (flocs). Consequently, accurate prediction of the transport and fate of sediments and of the nutrients and pollutants they carry depends on our ability to characterise aqueous flocs. Current research primarily focuses on characterising flocs based on their external gross-scale (>1 μm) properties (e.g., gross morphology, size and settling velocity) using
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McLoughlin, Liam. "A comparative study of flocculative water treatment by dissolved air flotation and sedimentation." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284679.

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Tuin, Stephen Alexander Duke Steve R. "Visualization of chlorella algal cells at bubble surfaces." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Chemical_Engineering/Thesis/Tuin_Stephen_35.pdf.

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Mallon, James M. "Floc structure and the improvement of chemical water cleaning." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324839.

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Moran, Paul James. "The flocculation and downstream processing of microbial suspensions." Thesis, University of Huddersfield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390633.

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Avander, Julia. "EVALUATION OF CATIONIC TANNINS IN WASTEWATER TREATMENT : A bio-based alternative to synthetic flocculants." Thesis, Umeå universitet, Kemiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-173084.

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Myers, William Scott Elton David J. "Dewatering rock crushing fines using geotextile tubes." Auburn, Ala., 2010. http://hdl.handle.net/10415/2033.

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Cosa, Sekelwa. "Assessment of bioflocculant production by some marine bacteria isolated from the bottom sediment of Algoa Bay." Thesis, University of Fort Hare, 2010. http://hdl.handle.net/10353/404.

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Several problems concerning the use of conventional synthetic flocculants has necessitated the need for alternative cost effective, safe and efficient bioflocculants from microorganisms inhabiting many environments, particularly those from unusual environments. Hence, this study assessed bioflocculant production by three marine bacteria isolated from the bottom sediment of Algoa Bay in the Eastern Cape Province of South Africa. Analysis of the 16S rDNA sequences led to their identification as Halobacillus sp. Mvuyo, Virgibacillus sp. Rob and Oceanobacillus sp. Pinky. Several factors affecting
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Pascoe, Richard D. "Shear flocculation and separation of ultrafine hematite and quartz with conventional collectors and polymeric flocculants." Thesis, University of Exeter, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308343.

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Pinheiro, Ãlvaro Daniel Teles. "Technical and economic feasibility of ethanol production in cashew apple juice from Saccharomyces cerevisiae flocculant." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15056.

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nÃo hÃ<br>Given the current situation in which it is the global energy sector, biofuels have been gaining more space, earning special attention the ethanol, which has shown growing demands. From this scenario, the objective of this work was to develop a bioprocess technically and economically practicable for ethanol production from cashew apple juice, using yeast Saccharomyces cerevisiae (CCA008) genetically modified containing a flocculent gene (FLO5&#945;). The work was divided in 4 four stages that are linked throughout the study. In the first stage was evaluated the temperature influence (
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Pereira, Juliana de Castro Nunes. "Identificação de bactérias da rizosfera de inhame, macaxeira e batata-doce potencialmente produtoras de polihidroxialcanoatos." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/10487.

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Submitted by Nathália Neves (nathalia.neves@ufpe.br) on 2015-03-04T18:33:43Z No. of bitstreams: 2 Dissertação Formato digital - Juliana de Castro 2013.1.pdf: 985270 bytes, checksum: 14f3a13c691b9d8853fcfbe2c0c26fe2 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)<br>Made available in DSpace on 2015-03-04T18:33:43Z (GMT). No. of bitstreams: 2 Dissertação Formato digital - Juliana de Castro 2013.1.pdf: 985270 bytes, checksum: 14f3a13c691b9d8853fcfbe2c0c26fe2 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2013-
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Charlebois, Lawrence E. "On the flow and beaching behaviour of sub-aerially deposited, polymer-flocculated oil sands tailings : a conceptual and energy-based model." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43761.

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This thesis presents the background, observations, and analyses performed during an investigation of the flocculated mature fine tailings (MFT) technology at the Suncor Energy Oil Sands Tailings Reduction Operation (TRO) in Fort McMurray, Alberta, Canada. The sub-aerial flow and deposition of flocculated MFT on a sloping beach can be described in the context of a rheology-energy conceptual model. The conceptual model, or flow map, can provide deposition cell designers and operators with a useful framework for managing beach development in a sub-aerial deposition cell. Observations during fie
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Lee, Chai Siah. "Extraction of bio-flocculant from okra using hydrothermal and microwave extraction methods combined with a techno-economic assessment." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/43270/.

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Since the usage of chemical flocculants especially polyacrylamides is closely related with environmental pollution and health hazards, synthesis of environmental friendly and economic viable bio-flocculants that exhibit high flocculating efficiency is highly desirable. The production of natural bio-flocculants extracted from plant is urgently needed as an alternative to chemical flocculants due to their inherent low toxicity, biodegradability and low environmental footprint. In this study, a plant-based bio-flocculant was extracted from Hibiscus/Abelmoschus esculentus (okra) with conventional
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Wiputri, Yonika. "Microparticle retention aid systems in mechanical pulp suspensions." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/973.

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In this thesis, the effectiveness of microparticle retention aid systems comprising of different cationic starches (tapioca and waxy maize), cationic flocculants (flocculant 1, linear with low charge density and flocculant 2, branched with medium charge density polyacrylamides) and anionic colloidal silica in improving retention and drainage of thermomechanical pulp (TMP) suspensions loaded with precipitated calcium carbonate (PCC) is studied. While starch is primarily added as dry strength agent in PCC-filled TMP suspensions, it also has a significant role in improving retention and drainag
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Kirwan, Luke J. "An investigation of polyacrylate adsorption onto hematite." Curtin University of Technology, Department of Applied Chemistry, 2002. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=13689.

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For the majority of tailings substrates, flocculant adsorption proceeds through hydrogen bonding of the amide functionalities with neutral surfaces. However, flocculation of Bayer process residue solids takes place in highly caustic liquors, typically using high molecular weight polyacrylates. This represents an almost unique situation, and implies a totally different adsorption mechanism. Direct examination of polyacrylate adsorption within the complex matrix of real liquors and a mixture of residue phases is difficult, making it necessary to focus on a model substrate (hematite) and syntheti
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Gustavsson, Katarina. "Mathematical and Numerical Modeling of 1-D and 2-D Consolidation." Doctoral thesis, KTH, Numerical Analysis and Computer Science, NADA, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3497.

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<p>A mathematical model for a consolidation process of a highlyconcentrated, flocculated suspension is developed.Thesuspension is treated as a mixture of a fluid and solidparticles by an Eulerian two-phase fluid model.W e characterizethe suspension by constitutive relations correlating thestresses, interaction forces, and inter-particle forces toconcentration and velocity gradients.This results in threeempirically determined material functions: a hystereticpermeability, a non-Newtonian viscosity and a non-reversibleparticle interaction pressure.P arameters in the models arefitted to experiment
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Young, Kevin Andrew. "The Mucilage of Opuntia Ficus Indica: A Natural, Sustainable, and Viable Water Treatment Technology for Use in Rural Mexico for Reducing Turbidity and Arsenic Contamination in Drinking Water." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3832.

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The use of natural environmentally benign agents in the treatment of drinking water is rapidly gaining interest due to their inherently renewable character and low toxicity. We show that the common Mexican cactus produces a gum-like substance, cactus mucilage, which shows excellent flocculating abilities and is an economically viable alternative for low-income communities. Cactus mucilage is a neutral mixture of approximately 55 high-molecular weight sugar residues composed basically of arabinose, galactose, rhamnose, xylose, and galacturonic acid. We show how this natural product was characte
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Klein, Jalma Maria. "Polímero eletrólito derivado de goma de cajueiro para uso como floculante no tratamento de efluentes." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/139076.

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Neste trabalho, um polímero eletrólito derivado de goma de cajueiro graftizada com poliacrilamida (GC-g-PAM) foi desenvolvido para uso como floculante no tratamento de águas. Foi investigado o efeito da concentração de acrilamida e do iniciador persulfato de potássio, da energia de micro-ondas e de ultrassom sobre a eficiência da reação, produtividade e viscosidade intrínseca dos copolímeros GC-g-PAM. As matérias-primas e os copolímeros graftizados foram caracterizados por espectroscopia de infravermelho, ressonância magnética nuclear, análise termogravimétrica, calorimetria exploratória difer
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Kurt, Nilufer, and nilf_k@yahoo com au. "A Study of Channelling Behaviour in Batch Sedimentation." RMIT University. School of Civil and Chemical Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20061220.120258.

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Batch sedimentation is a method that enables us to understand the mechanism of compaction and compression of sedimenting slurry. However, batch settling behaviour is a very complex phenomenon that is not easily described fully by a mathematical model. This causes unrealistically large empirical calculations when the thickener size estimations are required. Channelling, reverse concentration gradients and the initial concentration of the slurry have large effects on batch settling. Existing procedures do not provide clear relationships involving these three significant variables. In this stud
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Mukandi, Melody. "Modelling of a bioflocculant supported dissolved air flotation system for fats oil and grease laden wastewater pretreatment." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2637.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.<br>In the recent past, the poultry industry in South Africa has grown due to an increased demand of poultry products as a result of population growth and improved living standards. Furthermore, this has led to poultry slaughterhouses generating high strength wastewater which is laden with a high concentration of organic and inorganic pollutants from the slaughtering process and sanitation of equipment and facilities. As a result, South Africa has promulgated restrictions and a set of quality standards fo
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Rivero, Aranibar Zeidy Vilma, and Caro Álvaro Manuel Alexander Morales. "Propuesta de reutilización de agua y optimización de mermas de concreto mediante floculantes para la industria de premezclado." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653064.

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El presente trabajo analiza una propuesta de reutilización de agua proveniente del concreto fresco retornado a las plantas de premezclado. Esta propuesta es dada mediante productos floculantes, los cuales ayudarán a la clarificación del agua concentrada en las pozas de las industrias de premezclado. Asimismo, el agua recuperada tendrá similares características que el agua convencional utilizada, y que posteriormente ingresará al nuevo diseño de concreto, en donde aportará en un 5% en la resistencia del concreto adicional. Por otro lado, se analizó la posibilidad de reutilizar los finos acumula
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44

Rainey, Thomas James. "A study into the permeability and compressibility of Australian bagasse pulp." Queensland University of Technology, 2009. http://eprints.qut.edu.au/30394/.

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This is an experimental study into the permeability and compressibility properties of bagasse pulp pads. Three experimental rigs were custom-built for this project. The experimental work is complemented by modelling work. Both the steady-state and dynamic behaviour of pulp pads are evaluated in the experimental and modelling components of this project. Bagasse, the fibrous residue that remains after sugar is extracted from sugarcane, is normally burnt in Australia to generate steam and electricity for the sugar factory. A study into bagasse pulp was motivated by the possibility of making highl
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45

Buttice, Audrey Lynn. "Reducing Sediment and Bacterial Contamination in Water Using Mucilage Extracted from the Opuntia ficus-indica Cactus." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002944.

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46

VASCONCELOS, Rebeca Ferreira Lemos. "Produção de biomassa de Chlorella vulgaris (Chordat) para extração de óleo." Universidade Federal Rural de Pernambuco, 2012. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6441.

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Submitted by (edna.saturno@ufrpe.br) on 2017-02-17T15:55:36Z No. of bitstreams: 1 Rebeca Ferreira Lemos Vasconcelos.pdf: 270482 bytes, checksum: 094a646397559de7fef19a7c96db3c1f (MD5)<br>Made available in DSpace on 2017-02-17T15:55:36Z (GMT). No. of bitstreams: 1 Rebeca Ferreira Lemos Vasconcelos.pdf: 270482 bytes, checksum: 094a646397559de7fef19a7c96db3c1f (MD5) Previous issue date: 2012-12-20<br>Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Currently there is much debate about the production of biodiesel and ethanol, and new technologies studied for o
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47

Pániková, Kristína. "Efekt kombinace dávkování koagulantu a flokulantu na odvodňování čistírenských kalů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391936.

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Sludge treatment and disposal are one of the most important parts of sewage treatment. These are economically challenging parts, and therefore emphasis is placed on effective dosing. The dose should be as small as possible but also the highest dry matter output. The main target of this diploma thesis is therefore to show that it is possible to achieve the same or better degree of drainage of the sludge if different flocculant/coagulant ratio is applied to the sludge. Diploma thesis deals with determination of the optimal combination of chemical doses during sludge dewatering. The thesis contai
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Pegoraro, Danilo Silva. "Otimização da síntese de poliacrilamida catiônica em emulsão." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/46/46137/tde-18082016-075546/.

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Polímeros e copolímeros hidrossolúveis a base de acrilamida e seus derivados são sintetizados e aplicados principalmente como floculantes, auxiliando na remoção de sólidos finos presentes em águas residuais e industriais. As poliacrilamidas, como são assim chamadas, podem se apresentar em sua forma neutra ou contendo diferentes cargas iônicas (positivas ou negativas) em sua composição em função do tipo de aplicação específica. As poliacrilamidas são sintetizadas, em sua grande maioria, através de emulsões inversas via polimerização radicalar, visando à elevada massa molar do polímero formado.
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49

Nguyen, Minh Tan. "Deckschichtbildung in Kapillarmembranen bei der Querstrom-Mikrofiltration und ihre Beeinflussung durch polymere Flockungsmittel." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1104844950515-83398.

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Die Querstrom-Mikrofiltration mit Kapillarmembranen kommt zunehmend in den Bereichen Lebensmittel-, Pharma-, Chemieindustrie sowie in der Umwelttechnik zum Einsatz. Eine vollständige Beschreibung der Deckschichtbildung innerhalb der Membrananlage ist jedoch noch nicht gelungen. Der erste Teil dieser Arbeit widmet sich der Kuchenbildung in einer Kapillarmembran. Dabei werden sowohl Änderungen der Strömungsverhältnisse entlang der Kapillarlänge als auch Klassiereffekte bei der Querstrom-Mikrofiltration von polydispersen Stoffsystemen berücksichtigt. Die Modellberechnungen wurden mit Experimenten
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Fric, Jan. "Možnosti zvýšení užitných vlastností lehčeného cihlářského střepu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225888.

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This diploma thesis will discuss possibilities of using nanofibres to increase the strenght of the brick body, replacement of the current schrinkage reducing agent – quartz sand by stone dust, the use of flocculants as pore-forming agent and coloration of the body using iron trioxide.
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