| FILTECH 2009 REVIEW - SURVEY LECTURES |
| Introduction to the characterisation of products prior to formulating a Solid-Liquid Separation problem | Plenary Lecture | 13. Oct. 2009 | 10:30 - 11:30 h | |
| The lecture will give a brief overview of solid-liquid separation (SLS) techniques used to obtain liquids with a lower solid content and to concentrate and recover solids in a liquid phase. They are gathered in two families: ones using a porous media within the flow (“filtration”) and others based on the difference between the specific gravities of the solids and their carrying liquid (“sedimentation”). Few mathematical formulas applied to describe SLS principles and to size equipments will be presented to identify the parameters and characteristics linking the solid, the liquid, their mixture, both diluted and concentrated, and their behaviour in “filtration” and in “sedimentation”. Laboratory techniques applied to quantify intrinsical and behavioural characteristics of solids, liquids and suspensions will be summarised with examples of data reporting. Parameters include viscosity, specific gravity, concentration, particle size and shape, settling velocity, filterability, surface potential, compressibility and several others. Because in many cases each sector of application of SLS techniques has its own practices and needs, a same characteristic may be measured by several methods or instruments. Attention will then be drawn on the possible difference in values obtained. An overall focus will be offered on the quality and traceability of measurements, including calibration of instruments and validation of measurement methods. | Dr.-Ing. Christophe Peuchot IFTS - Institute for Filtration and Techniques of Separation France |
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| Advances in Pore Structure Evaluation by Porometry | Survey Lecture 1 | 13. Oct. 2009 | 13:15 - 14:30 h | |
| Porometry is the only technique that is capable of measuring important pore structure characteristics of filtration media such as pore throat diameters, bubble point, mean flow pore diameter, pore distribution, permeability, and envelope surface area. The basic principles of the technique will be explained and computation of the pore structure characteristics will be considered in detail. Advances made in the technology permitting highly sophisticated measurements of pore structure and full automation of testing with very little operator involvement will be discussed. Recently developed porometers with enhanced capability can simulate service conditions. For example, pore structure as functions of sample orientation, sample configuration, temperature, state of stress on the sample, and layers of material in composite sample can be evaluated. These developments will be illustrated with examples. | Dr. Krishna Gupta Porous Materials, Inc USA |
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| Membrane Pore Characterization Techniques - Status Quo and Future Development | Survey Lecture 2 | 13. Oct. 2009 | 15:00 - 16:15 h | |
| A survey of pore size, pore size distribution and morphology characterization techniques of filtration membranes will be presented. Most of the current available techniques can provide "bulk" pore properties in the filtration membranes only and could not provide "depth" profile of the pore properties and/or three-dimensional pore structure in the multilayer filtration membranes. The presentation will be divided into two parts: in the first part , a brief review of the current methods for characterizing filtration membrane pore properties will be given; in the second part, some innovative methods can give "depth profile" properties of pore and free volume in filtration membranes from micron-scale to angstrom will be introduced. Two of those innovative methods, nano-transmission x-ray microscope (NTXM) and position annihilation lifetime spectroscopic (PALS) techniques will be illustrated thoroughly with examples of microfiltration and nanofiltration membranes. | Prof. Kuo Lun Tung Chung Yuan Christian University Taiwan |
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| Towards predicting Filtration and Separation: Progress and Challenges | Survey Lecture 3 | 13. Oct. 2009 | 16:45 - 18:00 h | |
| The need for correctly predicting filtration and separation processes is ever increasing. New legislation, new materials, globalization and short development cycles require a deeper understanding of these processes. Computer modeling and simulations are efficient ways to investigate filtration and strive to complement experimental observation and theory. Filtration is a multiple scale phenomenon, ranging from the flow regime around a moving vehicle to the atomic regime of adhesion forces between dust particles and an electrically charged filter medium. Fortunately, powerful computers, sophisticated models and new experimental equipment are available. Current work is done on large memory desktop computers with several fast CPUs, and on three-dimensional filter media models combined with Scanning Electron Microscope and micro-Computer Tomographic images. Filter media models, filter process models, Computational Fluid Dynamics and statistics can provide valuable insights into filtration from both the practical and the academic point of view. | Dr. Andreas Wiegmann Fraunhofer Institute for Industrial Mathematics - ITWM Germany |
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| Development history and system integration aspects of diesel particle filters in commercial vehicles | Survey Lecture 4 | 14. Oct. 2009 | 13:15 - 14:30 h | |
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The lecture gives an overview about the development history of diesel particle filters (DPF) as applied in Mercedes-Benz commercial vehicles. The paper covers the development history of systems, starting from DPFs applied in buses in the 1980s up to the DPF technology introduced in 2007 to fulfil US emission requirements (EPA07). In addition system integration aspects of engine and aftertreatment engineering are discussed with the focus on needs and boundary conditions for successful DPF integration (such as system sizing and specification, regeneration capability and performance etc.). |
Dr.
Achim Dittler Daimler AG Germany |
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| Membrane bioreactors in waste water treatment - Status and trends | Survey Lecture 5 | 15. Oct. 2009 | 13:15 - 14:30 h | |
Due to their unique advantages like controlled biomass retention, improved effluent quality and decreased footprint, membrane bioreactors (MBR) are being increasingly used in wastewater treatment up to a size of several 100,000 pe. |
Prof. Matthias Kraume Berlin Technical University Germany Dr. Anja Drews Oxford University UK |
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The programme lists presenters, affiliations and countries/regions.