Dynamisches Waschen von hochkonzentrierten Suspensionen mit feinsten Partikeln in Scheibenfiltern

Goldnik, D.; Weiler, R.; Ripperger, Siegfried

doi:10.1002/cite.201050422

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Washing and Detection Of Impurity Concentration By Photometry1

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2013

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“…For calculation of the washing ratio, which describes the efficiency of washing, the volume of the used washing fluid V w is divided by the suspension volume V Susp . A theoretical wash curve for dilution washing can be calculated by the following equation [11]:…”

Section: Washing and Detection Of Impurity Concentration By Photometrymentioning

confidence: 99%

Mechanical Stress on Lysozyme Crystals during Dynamic Cross‐Flow Filtration

2013

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The influence of mechanical stress on the crystal size distribution of lysozyme crystal slurries in a dynamic cross-flow device is discussed. The reduction of crystal size may have an influence on mass and resistance of the fouling layer. A filter test device with a filter area of 130 cm 2 is used for thickening. After thickening, a model impurity, namely bovine serum albumin, is washed out of the suspension. A reduction of crystal size due to stirring and a reduced fouling layer with increasing stirrer speed is observed. Furthermore, a higher stirring speed increases the specific filtrate flux. In the presence of the impurity, more crystal aggregates than single isometric crystals are formed and, hence, the decrease of crystal size due to shear forces is more pronounced than without impurity.

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Section: Washing and Detection Of Impurity Concentration By Photometrymentioning

confidence: 99%