| XMT enabled prediction of structure and permeability of flocculated structures and sediments |
| |
| 作者姓名： | WILLIAMS R.A. SELOMULYA C. JIA X. |
| |
| 作者单位： | [1]Institute of Particle Science ＆ Engineering, School of Process, Environmental ＆ Materials Engineering, University of Leeds, Leeds LS2 9JT, UK [2]ARC Centre for Functional Nanomaterials, School of Chemical Engineering ＆ Industrial Chemistry, University of New South Wales, Sydney NSW 2052, Australia |
| |
| 基金项目： | The provision of a Visiting Fellowship from the Royal Academy of Engineering for CS is gratefully acknowledged. |
| |
| 摘 要： | INTRODUCTION Separation of solids from suspending liquid plays a crucial role in a variety of processes, from nanomaterials synthesis to bio-processing. It often involves colloidal particles that need to be aggregated into more manageable sizes. Characteristics of these aggregates influence downstream solids recovery. For instance, aggregates with open configurations may settle slower than those with denser structures due to increasing fluid drag, although considerable flow- through could…
|
| 关 键 词： | X线断层摄影术 XMT 结构体系 渗透性 图象处理 |
| 收稿时间： | 2005-08-08 |
| 修稿时间： | 2005-09-11 |
XMT enabled prediction of structure and permeability of flocculated structures and sediments |
| |
| WILLIAMS R.A. SELOMULYA C. JIA X..XMT enabled prediction of structure and permeability of flocculated structures and sediments[J].Journal of Zhejiang University Science,2005,6(12):1367-1373. |
| |
| Authors: | R A Williams C Selomulya X Jia |
| |
| Institution: | (1) Institute of Particle Science & Engineering, School of Process, Environmental & Materials Engineering, University of Leeds, LS2 9JT Leeds, UK;(2) ARC Centre for Functional Nanomaterials, School of Chemical Engineering & Industrial Chemistry, University of New South Wales, 2052 Sydney, NSW, Australia |
| |
| Abstract: | 3D visualisations of the microstructure of flocculated particulates and sediments using optical confocal laser microscopy and high resolution X-ray microtomography (XMT) methods are described. Data obtained from in-situ measurements should enable direct computation of the properties of solids assembly (shape, size, contact area) and their permeability to fluids. A specific application relating to the formation of silica aggregates is described from which the behaviour of sediments containing these materials can be predicted on the basis of a bench-top test and the use of a Lattice Boltzman simulation. It is proposed that the method can potentially be used to predict trends such as the filtration behaviour of porous structures under different states of compression. This offers a significant benefit in assisting the formulation design of flocculated materials pertinent to a number of industrial sectors wishing to design optimal filtration or relevant operations. |
| |
| Keywords: | Fluid flow Imaging Microstructure Porous media Visualization Tomography |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
