Filtration of Colloidal Suspensions - MRI Investigation and Numerical Simulation

• Published in: Chemical engineering & technology Vol. 29; no. 7; pp. 828 - 831
• Main Authors: Erk, A., Hardy, E. H., Althaus, T., Stahl, W.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.07.2006; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: Applied sciences; Chemical engineering; Colloids; Exact sciences and technology; Filtration; Liquid-liquid and fluid-solid mechanical separations; Nuclear magnetic resonance (NMR); Settling; Simulation; Suspensions; Compression; Filtration; Volume fraction; Colloidal suspension; Saturated liquid; Separation process; Numerical simulation; Sediments; Modeling; Sedimentation; Filter cake; Operating conditions
• ISSN: 0930-7516; 1521-4125
• DOI: 10.1002/ceat.200600054

The principle mechanisms of solid‐liquid separation processes are sedimentation and filtration, both including the formation and compression of a liquid‐saturated bulk. The compressive properties of the bulk determine the operating parameters of solid‐liquid separation devices and the achievable separation results. Information about the solids volume fraction of the bulk is essential for a better understanding of the physical mechanisms and precise modeling. A numerical model for the calculation of the local solids volume fraction during formation and compression of filter cakes and sediments was developed. The calculated results are compared with experimental NMR data. A numerical model for the calculation of the local solids volume fraction during formation and compression of filter cakes and sediments was developed. The calculated results are compared with experimental NMR data.