1. Multistep centrifugal consolidation method for characterization of filterability of aggregated concentrated suspensions
- Author
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Davood Kavianpour, Samo Mahnič-Kalamiza, Anne Zierau, Geneviève Gésan-Guiziou, Eugène Vorobiev, Titus Sobisch, Maksym Loginov, D. Lerche, Science et Technologie du Lait et de l'Oeuf (STLO), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), LUM GmbH, Justus-von-Liebig-Str. 3, Centre de Recherche de Royallieu, Sorbonne Université (SU)-Université de Technologie de Compiègne (UTC), Faculty of Electrical Engineering, and University of Ljubljana
- Subjects
Filterability ,analyse de données ,génie des procedes agroalimentaires ,Centrifugal consolidation ,data analysis ,Filtration and Separation ,Concentrated dispersion ,02 engineering and technology ,technique de filtration ,Analytical Chemistry ,Specific cake resistance ,Pressure range ,pressure ,020401 chemical engineering ,application industrielle ,comportement de résistance ,[SDV.IDA]Life Sciences [q-bio]/Food engineering ,kaolin ,[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering ,0204 chemical engineering ,centrifugation ,Chromatography ,Consolidation (soil) ,Chemistry ,Spatially resolved ,centrifuging ,Analytical centrifugation ,Data interpretation ,méthode de caractérisation ,Analytical Centrifugation ,Mechanics ,021001 nanoscience & nanotechnology ,industrial application ,pression ,Constant pressure ,Dispersion stability ,aggregates ,indice de concentration ,agrégat ,0210 nano-technology ,Kaolin suspension ,[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition ,X-ray analysis ,procédé de séparation - Abstract
Current development of analytical centrifugation methods facilitates the experimental characterization of dispersion stability and optimization of separation processes (such as centrifugation and filtration). Nevertheless, theoretical analysis of the centrifugal data remains rather complex. In addition, different side effects can influence the centrifugal process and complicate data interpretation. The present paper proposes a simple method for characterization of filterability of concentrated aggregated suspensions by centrifugal consolidation. Different experimental protocols were tested in order to reduce the influence of side effects. Selection of the optimal protocol was based on X-ray analysis of local (spatially resolved) consolidated sample structure. The multistep centrifugal consolidation with constant centrifugal acceleration ratio is suggested. Data analysis based on a single numerical solution of a basic consolidation equation yields the pressure dependency of specific cake resistance. A satisfactory correspondence (15% difference) was observed between the pressure dependency of specific cake resistance determined from the proposed multistep centrifugal consolidation, and conventional constant pressure dead-end filtration experiments for the studied concentrated aggregated kaolin suspension in the pressure range of 7.5…170 kPa.
- Published
- 2017
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