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CLC number: TB126

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Received: 2005-08-08

Revision Accepted: 2005-09-11

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.12 P.1367~1373

http://doi.org/10.1631/jzus.2005.A1367


XMT enabled prediction of structure and permeability of flocculated structures and sediments


Author(s):  Williams R.A., Selomulya C., Jia X.

Affiliation(s):  Institute of Particle Science & Engineering, School of Process, Environmental & Materials Engineering, University of Leeds, Leeds LS2 9JT, UK; more

Corresponding email(s):   R.A.Williams@leeds.ac.uk, c.selomulya@unsw.edu.au, X.Jia@leeds.ac.uk

Key Words:  Fluid flow, Imaging, Microstructure, Porous media, Visualization, Tomography


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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 A, 2005, 6(12): 1367~1373.

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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.

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Reference

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[8] Selomulya, C., Bushell, G., Amal, R., Waite, T.D., 2002. Aggregation mechanisms of latex of different particle sizes in a controlled shear environment. Langmuir, 18(6):1974-1984.

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