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Letteratura scientifica selezionata sul tema "Filtration"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 5 ottobre 2024

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Articoli di riviste sul tema "Filtration"

Leiviskä, T., e J. Rämö. "Investigation of multimodal zeta potential and size distribution in chemical pulp process water". Water Science and Technology 56, n. 11 (1 dicembre 2007): 123–29. http://dx.doi.org/10.2166/wst.2007.770.

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Multimodal zeta potential distribution in chemical birch pulp process water was studied by filtrating the water into fractions and subsequently measuring zeta potential, charge quantity, turbidity and organic substances. Filtrations were made using 12 μm, 1.6 μm, 1.2 μm, 0.45 μm and 0.1 μm membranes. The number of populations with different zeta potentials diminished with filtration. With the unfiltrated water, 12 μm and 1.6 μm filtrates, three or four different zeta potentials were observed. When the filtration was performed with a 1.2 μm membrane or smaller, only two populations of different zeta potentials were detected. The charge quantity steadily approached zero from unfiltrated water towards a 1.6 μm fraction filtrate. After that, it remained constant. Turbidity constantly decreased when using smaller membranes. The amount of wood extractives decreased to half with 0.1 μm filtration. No significant difference in the amount of carbohydrates and lignin between the filtrated fractions and the unfiltrated water was detected. A comparison dealing with particle size analysis between two different apparatuses was also made.

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Parks, Allen D., e David J. Marchette. "Persistent homology in graph power filtrations". Royal Society Open Science 3, n. 10 (ottobre 2016): 160228. http://dx.doi.org/10.1098/rsos.160228.

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The persistence of homological features in simplicial complex representations of big datasets in R n resulting from Vietoris–Rips or Čech filtrations is commonly used to probe the topological structure of such datasets. In this paper, the notion of homological persistence in simplicial complexes obtained from power filtrations of graphs is introduced. Specifically, the r th complex, r ≥ 1, in such a power filtration is the clique complex of the r th power G r of a simple graph G . Because the graph distance in G is the relevant proximity parameter, unlike a Euclidean filtration of a dataset where regional scale differences can be an issue, persistence in power filtrations provides a scale-free insight into the topology of G . It is shown that for a power filtration of G , the girth of G defines an r range over which the homology of the complexes in the filtration are guaranteed to persist in all dimensions. The role of chordal graphs as trivial homology delimiters in power filtrations is also discussed and the related notions of ‘persistent triviality’, ‘transient noise’ and ‘persistent periodicity’ in power filtrations are introduced.

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Forster, R. B. "Filtration and Filtration Plant". Journal of the Society of Dyers and Colourists 42, n. 11 (22 ottobre 2008): 333–43. http://dx.doi.org/10.1111/j.1478-4408.1926.tb01348.x.

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Arifjanov, Aybek. "Determination of Filtration Strength and Initial Filtration Gradient in Soil Constructions". Journal of Advanced Research in Dynamical and Control Systems 12, SP4 (31 marzo 2020): 1860–64. http://dx.doi.org/10.5373/jardcs/v12sp4/20201672.

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Han, Chao, Hongping Xie, Bin Bai, Dongrui Liu, Yue Huang e Rongjun Zhang. "Study on the Factors Affecting the Performance of a Pressure Filtration–Flocculation–Solidification Combined Method for Mud Slurry Treatment". Applied Sciences 13, n. 20 (14 ottobre 2023): 11299. http://dx.doi.org/10.3390/app132011299.

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A pressure filtration–flocculation–solidification combined treatment possesses great potential for the reutilization of the waste mud slurry generated from diverse construction projects as filling material due to its versatility and high efficiency. However, very limited existing studies have focused on the factors affecting pressure filtration’s efficiency. In this paper, a calculation model for compression filtration is established based on laboratory pressure filtration model tests and one-dimensional large-strain consolidation theory. The influence of various parameters on pressure filtration’s efficiency is analyzed, and favorable values for these parameters are recommended. The results show that an increased initial mud cake thickness significantly increases the dewatering time and reduces the treatment’s efficiency. A lower dewatering time and higher efficiency can be achieved by increasing the filtration pressure, but the efficiency improvements become limited after reaching the critical pressure threshold. For the mud slurry used in this study, the optimal values for the initial mud slurry bag thickness, filtration pressure, and dewatering time are 240 mm, 1.0 MPa, and 30 min, respectively, yielding a final mud cake water content of 58.7% after filtration.

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Yan, Guang Xu, Qian Zhang, Hui Li e Yu Li. "Spinning Effluents Treatment from Dry-Spun Acrylic Fiber Producing by Integrated Membrane Filtration". Advanced Materials Research 476-478 (febbraio 2012): 789–92. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.789.

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Spinning effluents (SE) from dry-spun acrylic fiber producing are hard to biodegrade for dimethyl formamide (DMF) and nitriles contained. Integrated membrane filtrations including micro-filtration (MF), ultra-filtration (UF) and nano-filtration (NF) were adopted to separate the pollutants in SE. Experiment showed that MF has weak capacity for the removal of organic pollutants, while NF and UF contributed to 49.49% and 31.51% to the initial COD removal rates of SE.

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Fedel, Tony. "Air filtration: Evaluating filtration efficiency". Filtration + Separation 49, n. 6 (novembre 2012): 37–39. http://dx.doi.org/10.1016/s0015-1882(12)70289-6.

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JENSEN, BERNT TORE, DAG OSKAR MADSEN e XIUPING SU. "FILTRATIONS IN ABELIAN CATEGORIES WITH A TILTING OBJECT OF HOMOLOGICAL DIMENSION TWO". Journal of Algebra and Its Applications 12, n. 02 (16 dicembre 2012): 1250149. http://dx.doi.org/10.1142/s0219498812501496.

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We consider filtrations of objects in an abelian category [Formula: see text] induced by a tilting object T of homological dimension at most two. We define three extension closed subcategories [Formula: see text] and [Formula: see text] with [Formula: see text] for j > i, such that each object in [Formula: see text] has a unique filtration with factors in these categories. In dimension one, this filtration coincides with the classical two-step filtration induced by the torsion pair. We also give a refined filtration, using the derived equivalence between the derived categories of [Formula: see text] and the module category of [Formula: see text].

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Manish Chitnis, Aayush. "Nanotechnology for Water Filtration". International Journal of Science and Research (IJSR) 13, n. 5 (5 maggio 2024): 1094–100. http://dx.doi.org/10.21275/sr24516215746.

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Kübel, Johannes. "From Jantzen to Andersen filtration via tilting equivalence". MATHEMATICA SCANDINAVICA 110, n. 2 (1 giugno 2012): 161. http://dx.doi.org/10.7146/math.scand.a-15202.

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The space of homomorphisms between a projective object and a Verma module in category $\mathcal O$ inherits an induced filtration from the Jantzen filtration on the Verma module. On the other hand there is the Andersen filtration on the space of homomorphisms between a Verma module and a tilting module. Arkhipov's tilting functor, a contravariant self-equivalence of a certain subcategory of $\mathcal O$, which maps projective to tilting modules induces an isomorphism of these kinds of Hom-spaces. We show that this equivalence identifies both filtrations.

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Tesi sul tema "Filtration"

Dorea, Caetano Chang. "Chemically-enhanced gravel pre-filtration for slow sand filtration". Thesis, University of Surrey, 2005. http://epubs.surrey.ac.uk/843007/.

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The simple operational and maintenance requirements of slow sand filtration (SSF), coupled with its high biological treatment efficiency makes it an attractive technology. The main limitation of SSF is its vulnerability to high suspended solids loadings. Pre-treatment in such instances can be achieved by gravel filtration. Cases of gravel pre-filtration underperformance have been attributed to significant fractions of influent suspended particles in the colloidal range. Maximum limits of turbidity for the application of gravel pre-filters have also been suggested. A simple intervention to overcome such water quality constraints can be through the dosing of a coagulant (aluminium sulfate) upstream of the pre-filtration stage; enhancing the pre-treatment efficiency, in what could be defined as direct (gravel) filtration. Previous studies have investigated its use as a pre-treatment for SSF; however, the results emphasise pre-filtration treatment efficiency and do not consider the effectiveness of the pre-treatment in protecting the slow sand filters. Also, because of the potential toxic effects of A1 residuals, its upstream use in relation to a biological SSF treatment has never been properly evaluated. The objectives of this study were: assess the efficiency as well as the effectiveness of chemically- enhanced up-flow gravel filters in series (UGFS) as pre-treatment for SSF and study the impact of aluminium residuals on the treatment performance and potential effects on biological activity. Preliminary experiments and first set of runs with chemically-enhanced pre-filter showed evidence of wall-effects due to the media size/column diameter ratio. This experimental design shortcoming was thought not to have affected the overall trends of results and was addressed for the set of pilot-experiments on which most conclusions are based. The results from the experimental work have shown that chemically-enhanced gravel pre-filtration can be effective only if coagulant dose is carefully controlled. Contrary to previous research, it was found that when resorting to chemically-enhanced pre-treatment (with alum) turbidities of less than 2 NTU (nephelometric turbidity units) should be targeted for in order to ensure an efficient and effective SSF pre-treatment. Such control will minimise A1 residuals that can otherwise cause a premature blockage of the slow sand filter by A1 hydroxide precipitates even with influent turbidities below 10 NTU. This was speculated to occur possibly due to size and mechanical properties of deposits retained on the uppermost layers of the SSF beds. A1 speciation analyses revealed that A1 residuals from chemically-enhanced pre-filtration were found to be mostly of inorganically- bound Al. This fraction consisted mainly of A1 in its form which is considered to be potentially more bioavailable (and possibly toxic) to aquatic (micro)organisms. However, slow sand filtration column trials found that filters dosed with the potentially more labile form of A1 did not show any significant difference in terms of treatment performance parameters and biological activity indicators. It has been demonstrated that chemically-enhanced pre-filtration (with alum) may not be an effective pre-treatment on the basis that it may cause an early blockage of the slow sand filters. There was no evidence of effect of A1 on biological treatment of the slow sand filtration process.

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Koch, Michael. "Cake filtration modeling : Analytical cake filtration model and filter medium characterization". Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2059.

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Cake filtration is a unit operation to separate solids from fluids in industrial processes. The build up of a filter cake is usually accompanied with a decrease in overall permeability over the filter leading to an increased pressure drop over the filter. For an incompressible filter cake that builds up on a homogeneous filter cloth, a linear pressure drop profile over time is expected for a constant fluid volume flow. However, experiments show curved pressure drop profiles, which are also attributed to inhomogeneities of the filter (filter medium and/or residual filter cake).

In this work, a mathematical filter model is developed to describe the relationship between time and overall permeability. The model considers a filter with an inhomogeneous permeability and accounts for fluid mechanics by a one-dimensional formulation of Darcy's law and for the cake build up by solid continuity. The model can be solved analytically in the time domain. The analytic solution allows for the unambiguous inversion of the model to determine the inhomogeneous permeability from the time resolved overall permeability, e.g. pressure drop measurements. An error estimation of the method is provided by rewriting the model as convolution transformation.

This method is applied to simulated and experimental pressure drop data of gas filters with textile filter cloths and various situations with non-uniform flow situations in practical problems are explored. A routine is developed to generate characteristic filter cycles from semi-continuous filter plant operation. The model is modified to investigate the impact of non-uniform dust concentrations.

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Hwang, Chi-Yung. "Magnetic filtration of water /". [S.l.] : [s.n.], 1985. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=7883.

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Li, Hongjie. "Optimizing drinking water filtration". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0011/MQ60148.pdf.

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Mayor, Russell. "Some problems in filtration". Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320650.

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Watson, Anne Mary. "The filtration of algae". Thesis, University College London (University of London), 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403594.

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Hasan, Faisal S. "Upflow sand-roughing filtration". Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/34972.

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Slow sand filtration requires low turbidity water for effective operation. In most cases this means pretreating the raw water to reduce its turbidity. Lately horizontal gravel filters have become very popular as a means of pretreatment. They are simple to operate, have a large mass storage capacity, and can cope with high turbidity shock loads. However, cleaning them can be a problem. An alternative pretreatment, which this study is concerned with, is upflow sand roughing filtration. It has the potential advantages of simple design, ease of operation and cleaning, and low area requirements. A study of upflow versus downflow was done using two small filter columns. The results showed that although downflow exhibited a better turbidity removal than upflow, upflow allowed longer filter runs and better utilisation of bed depth. This was in agreement with earlier findings. The effect of backwash water quality was also investigated. Both filters were run in upflow direction; one was washed with tap water, the other with polluted raw water. The results suggested, unexpectedly, that a filter washed repeatedly with polluted water produced slightly better turbidity removal than one washed with tap water. This indicated some form of maturation, which could be biological in nature, taking place. Experiments with horizontal gravel filters clearly showed the importance of biological mechanisms in maturation. Four new filter columns, 50mm in diameter, were constructed. These allowed further investigation of the effect of bed depth. Backwash rate and duration were investigated to find an optimum. Very little of the wash water was required to clean the filters, the majority being required to flush the turbidity out of the system. The long-term effect of backwash on filters was investigated, as was the effect of wash water quality. Tap water, raw water and raw water polluted with settled sewage were used to wash the filters. The results indicated that the filters washed with raw water and polluted water proved to be as good as regards turbidity removal as those washed with tap water. This suggested that raw water backwash could be used effectively for washing upflow roughing filters.

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Karisiddappa, Anoop M. "Study of Filtration Characteristics of Crossflow Filtration for Cable Suspended Robot - Algae Harvester". Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470825680.

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Yukseler, Hande. "Biological And Chemical Sludge Filtration". Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608608/index.pdf.

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Up to date, sludge filterability has been characterized by the Ruth&rsquo
s classical filtration theory and quantified by the well-known parameter specific cake resistance (SCR). However, the complexity of the actual phenomenon is clearly underestimated by the classical filtration theory and SCR is often not satisfactory in describing filterability. Although many scientific studies were conducted for a better analysis and understanding of the filtration theory, still a practically applicable solution to replace the classical theory for a better description of filterability has not been proposed yet. In the present study, blocking filtration laws proposed by Hermans and Bredé
e, dating back to 1936, which have been extensively used in the membrane literature for the analysis of fouling phenomenon and the multiphase filtration theory developed by Willis and Tosun (1980) highlighting the importance of the cake-septum interface in determining the overall filtration rate have been adopted for the analysis of filterability of sludge systems. Firstly, the inadequacy of the classical filtration theory in characterizing the filterability of real sludge systems and also the lack of the currently used methodology in simulating filtration operation was highlighted. Secondly, to better understand the effect of slurry characteristics and operational conditions on filtration, model slurries of spherical and incompressible Meliodent particles were formed. Finally, a methodology was developed with the gathered filtration data to assess the filterability of the sludge systems by both theories. The results clearly show that both approaches were superior to the classical approach in terms of characterizing the filterability of sludge systems. While blocking laws yielded a slurry specific characterization parameter to replace the commonly used SCR, the multiphase theory provided a better understanding of the physical reality of the overall process.

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Tuori, Timo. "Enhancing filtration by electroacoustic means". Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/12211.

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Fouling of filter media and physico-chemical properties of suspensions decrease the efficiency of filtration devices in a wide range of process industries. Environmental protection causes increasing demand to clean effluent waters to higher standards and to recycle process waters more completely. Conventional deliquoring processes are mainly based on a single driving force, usually gravity, underpressure or pressure. Today, multiforce deliquoring processes based on a combination of ultrasonic and/or other nonmechanical forces, like an electric field, are being developed. These new technological applications, namely electro-acoustic deliquoring techniques, will most probably enable higher deliquoring rates and final solid contents than conventional methods have been able to yield. Results from an experimental study of electric and/or ultrasonic field assisted filtrations are presented in this thesis. Both electric and ultrasonic fields can reduce fouling of the filtration medium and have a significant influence on filtration capacity. The extent of filtration improvement is affected mostly by particle size, surface charge, acoustic frequency, intensity and field strengths. Theoretical examinations of the use of electric and/or ultrasonic fields to enhance filtration efficiency are laid out. Some aspects regarding orthokinetic interaction in acoustic agglomeration have been considered, and energy consumptions of the filtrations of different suspensions used in experiments were also determined. Using electric field as a pre-treatment, biolfiber suspension filtration can be enhanced 4-fold and energy consumption of electric field enhancing the filtration (kWh kg1 separated water; product final dry solid content 23 % by mass) was only about 17 % of the total energy consumption of conventional vacuum filtration. Pre-treatment units can be connected to the filtration unit, for instance before the filter drum. Possible pre-treatment apparatuses could be electroflotation equipment or a pre-treatment tube technique introduced in this Ph.D. Thesis…

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Più fonti

Libri sul tema "Filtration"

Corporation, Parker Hannifin, a cura di. Filtration technology: Global filtration technology. 2^a ed. Cleveland, OH: Parker Hannifin Corp., 1997.

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Ray, Chittaranjan, Gina Melin e Ronald B. Linsky, a cura di. Riverbank Filtration. Dordrecht: Kluwer Academic Publishers, 2003. http://dx.doi.org/10.1007/0-306-48154-5.

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Jornitz, Maik W., a cura di. Sterile Filtration. Berlin/Heidelberg: Springer-Verlag, 2006. http://dx.doi.org/10.1007/b101405.

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American Water Works Association. Coagulation and Filtration Committee. Precoat Filtration Subcommittee., a cura di. Precoat filtration. Denver, CO: American Water Works Association, 1988.

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Joseph, James J. Coolant filtration. East Syracuse, N.Y. (P.O. Box 232, East Syracuse 13057): Joseph Marketing, 1985.

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Corporation, Parker Hannifin, a cura di. Filtration technology. Cleveland, OH: Parker Hannifin Corp., 1995.

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Engineers, Society of Automotive, e SAE World Congress (2007 : Detroit, Mich.), a cura di. Automotive filtration. Warrendale, PA: Society of Automotive Engineers, 2007.

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Inc, SBP Technologies, e Center for Environmental Research Information (U.S.), a cura di. Membrane filtration. [Cincinnati, Ohio: U.S. Environmental Protection Agency, Center for Environmental Research Information, 1992.

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Survey, United States Geological. Mgo Filtration Research. S.l: s.n, 1987.

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Hubbs, Stephen A., a cura di. Riverbank Filtration Hydrology. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-3938-6.

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Capitoli di libri sul tema "Filtration"

Crosta, Giovanni B. "Filtration". In Selective Neck Dissection for Oral Cancer, 1–2. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-12127-7_125-1.

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Crain, Richard W. "Filtration". In Electroplating Engineering Handbook, 716–27. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-2547-5_34.

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Gooch, Jan W. "Filtration". In Encyclopedic Dictionary of Polymers, 305. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_4944.

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Concha A., Fernando. "Filtration". In Solid-Liquid Separation in the Mining Industry, 281–340. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02484-4_9.

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Gooch, Jan W. "Filtration". In Encyclopedic Dictionary of Polymers, 893. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13754.

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Crosta, Giovanni B. "Filtration". In Encyclopedia of Earth Sciences Series, 343–44. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_125.

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Di Pretoro, Alessandro, e Flavio Manenti. "Filtration". In Non-conventional Unit Operations, 47–57. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34572-3_5.

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Basha, Mahin. "Filtration". In Springer Protocols Handbooks, 9–12. New York, NY: Springer US, 2019. http://dx.doi.org/10.1007/978-1-0716-0134-1_2.

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Iritani, Eiji. "Filtration". In Powder Technology Handbook, 481–88. Fourth edition. | Boca Raton, FL : Taylor & Francis Group, LLC, 2020.: CRC Press, 2019. http://dx.doi.org/10.1201/b22268-61.

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Chia, Shir Reen, Winn Sen Lam, Wei Hon Seah e Pau Loke Show. "Filtration". In Bioprocess Engineering, 27–54. Boca Raton, FL : Taylor & Francis Group, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429466731-3.

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Atti di convegni sul tema "Filtration"

Weiss, Kampbell, Amanda Morgan, Destin Leinen e Kayla Mendez. "Portable Filtration Skid". In Portable Filtration Skid. US DOE, 2021. http://dx.doi.org/10.2172/1848087.

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Sztandera, Adrian, e Roman Kaszynski. "Multitasking Filtration Network". In 2018 23rd International Conference on Methods & Models in Automation & Robotics (MMAR). IEEE, 2018. http://dx.doi.org/10.1109/mmar.2018.8486106.

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Johnston, Bob. "Press Liquor Filtration". In ASME 2012 Citrus Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/cec2012-5703.

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Usually a Citrus Engineering Conference presentation before this group is done to report some advance in citrus related technology. This paper, however, is limited to suggesting an area where significant benefits might result from further study and testing. This paper has to do with improving the thermal efficiency of citrus feedmills. The idea presented can also help reduce cleaning expenses. The concept has to do with filtering press liquor ahead of a Waste Heat Evaporator (WHE). Work done so far is not definitive, and it is clear that further testing is required. The paper is focused on a machine known variously as the Turbo Filter or Fiber Filter. This is unfortunate because other filtration equipment may be even more effective or commercially justifiable. The basic premise of this paper, which needs to be demonstrated, is that improved filtration of press liquor results in lower viscosity fluid in the WHE. In turn this allows the WHE to produce higher Brix molasses. The result of this are improved thermal efficiency of the citrus feedmill. Paper published with permission.

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Kohne, Roger W., e Gary S. Logsdon. "Slow Sand Filtration". In World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40569(2001)483.

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Alves, Maycon, e Aline Marques. "Barometric Column Filtration vs. Filtrate Pump Filtration Comparison - Case Study". In 23rd International Conference on Paste, Thickened and Filtered Tailings. Gecamin Publications, Santiago, 2020. http://dx.doi.org/10.36487/acg_repo/2052_86.

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Barsan, Narcis, Andrei Zaharia, Dana Chitimus, Emilian Mosnegutu, Nedeff Florin, Dragos Rusu, Carolina Untila e Doina Capsa. "Filtration Theory and Techniques. A Short Review on the Filtration Process". In 2020 7th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). IEEE, 2020. http://dx.doi.org/10.1109/eeae49144.2020.9278975.

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Smith, Karl J. P., Joshua Winans e James McGrath. "Ultrathin Membrane Fouling Mechanism Transitions in Dead-End Filtration of Protein". In ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icnmm2016-7989.

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Ultrathin membranes will likely see great utility in future membrane-based separations, but key aspects of the performance of these membranes, especially when they are used to filter protein, remain poorly understood. In this work we perform protein filtrations using new nanoporous silicon nitride (NPN) membranes. Several concentrations of protein are filtered using dead end filtration in a benchtop centrifuge, and we track fouling based on the amount of filtrate passed over time. A modification of the classic fouling model that includes the effects of using a centrifuge and allow for the visualization of a transition between pore constriction and cake filtration demonstrate that for a range of protein concentrations, cake filtration supersedes pore constriction after ∼30 seconds at 690 g.

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Eleftherakis, John G., e Ibrahim Khalil. "Optimizing Automatic Transmission Filtration". In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-0004.

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Janabayev, D., V. Atamanyuk, A. Khussanov, Z. Gnativ e B. Kaldybaeva. "Filtration Drying of Cotton". In Chemical technology and engineering. Lviv Polytechnic National University, 2019. http://dx.doi.org/10.23939/cte2019.01.124.

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Coquet, François, Ying Hu, Jean Mémin e Shige Peng. "Filtration Consistent Nonlinear Expectations". In Proceedings of the International Conference on Mathematical Finance. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812799579_0009.

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Rapporti di organizzazioni sul tema "Filtration"

Daniel, Richard C., Justin M. Billing, Carolyn A. Burns, Reid A. Peterson, Renee L. Russell, Philip P. Schonewill e Rick W. Shimskey. Filtration Understanding: FY10 Testing Results and Filtration Model Update. Office of Scientific and Technical Information (OSTI), aprile 2011. http://dx.doi.org/10.2172/1064600.

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Corey, I., e W. Bergman. Liquid filtration simulation. Office of Scientific and Technical Information (OSTI), giugno 1996. http://dx.doi.org/10.2172/387533.

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William A. Greene, Patricia A. Kirk, Richard Hayes e Joshua Riley. CENTRIFUGAL MEMBRANE FILTRATION. Office of Scientific and Technical Information (OSTI), ottobre 2005. http://dx.doi.org/10.2172/859218.

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Daniel J. Stepan, Bradley G. Stevens e Melanie D. Hetland. CENTRIFUGAL MEMBRANE FILTRATION. Office of Scientific and Technical Information (OSTI), ottobre 1999. http://dx.doi.org/10.2172/761675.

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Beckman, Ivan. Development of alternative air filtration materials and methods of analysis. Engineer Research and Development Center (U.S.), giugno 2023. http://dx.doi.org/10.21079/11681/47188.

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Abstract (sommario):

Development of high efficiency particulate air (HEPA) filters demonstrate an effort to mitigate dangerous aerosol hazards at the point of production. The nuclear power industry installs HEPA filters as a final line of containment of hazardous particles. An exploration of analytical, experimental, computational, and machine learning models is presented in this dissertation to advance the science of air filtration technology. This dissertation studies, develops, and analyzes alternative air filtration materials and methods of analysis that optimize filtration efficiency and reduce resistance to air flow. Alternative nonwoven filter materials are considered for use in HEPA filtration. A detailed review of natural and synthetic fibers is presented to compare mechanical, thermal, and chemical properties of fibers to desirable characteristics for air filtration media. Digital replication of air filtration media enables coordination among experimental, analytical, machine learning, and computational air filtration models. The value of using synthetic data to train and evaluate computational and machine learning models is demonstrated through prediction of air filtration performance, and comparison to analytical results. This dissertation concludes with discussion on potential opportunities and future work needed in the continued effort to advance clean air technologies for the mitigation of a global health and safety challenge.

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Grillet, Anne Mary, Christopher Jay Bourdon, Caroline Ann Souza, Margaret Ellen Welk, Joel David Hartenberger e Carlton, F. Brooks. Emulsions for interfacial filtration. Office of Scientific and Technical Information (OSTI), novembre 2006. http://dx.doi.org/10.2172/897635.

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Dworjanyn, L. O. Monosodium Titanate Sludge Filtration. Office of Scientific and Technical Information (OSTI), novembre 2000. http://dx.doi.org/10.2172/767282.

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Daniel, Richard C., Carolyn A. M. Burns, Renee L. Russell, Philip P. Schonewill, Sabrina D. Hoyle e Ernest J. Antonio. Crossflow Filtration of LAWPS Simulants. Office of Scientific and Technical Information (OSTI), gennaio 2018. http://dx.doi.org/10.2172/1491568.

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Besmann, T. M. High Temperature Particle Filtration Technology. Office of Scientific and Technical Information (OSTI), novembre 2001. http://dx.doi.org/10.2172/788901.

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Pontius, D. H. Hot gas filtration technical issues. Office of Scientific and Technical Information (OSTI), novembre 1995. http://dx.doi.org/10.2172/125009.

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