Particle movements provoke avalanche-like compaction in soft colloid filter cakes

Abstract During soft matter filtration, colloids accumulate in a compressible porous cake layer on top of the membrane surface. The void size between the colloids predominantly defines the cake-specific permeation resistance and the corresponding filtration efficiency. While higher fluxes are benefi...

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Autores principales:	Arne Lüken, Lucas Stüwe, Johannes Lohaus, John Linkhorst, Matthias Wessling
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/265e8707a4b443a1aab14f91139cd109
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spelling	oai:doaj.org-article:265e8707a4b443a1aab14f91139cd1092021-12-02T17:40:46ZParticle movements provoke avalanche-like compaction in soft colloid filter cakes10.1038/s41598-021-92119-w2045-2322https://doaj.org/article/265e8707a4b443a1aab14f91139cd1092021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92119-whttps://doaj.org/toc/2045-2322Abstract During soft matter filtration, colloids accumulate in a compressible porous cake layer on top of the membrane surface. The void size between the colloids predominantly defines the cake-specific permeation resistance and the corresponding filtration efficiency. While higher fluxes are beneficial for the process efficiency, they compress the cake and increase permeation resistance. However, it is not fully understood how soft particles behave during cake formation and how their compression influences the overall cake properties. This study visualizes the formation and compression process of soft filter cakes in microfluidic model systems. During cake formation, we analyze single-particle movements inside the filter cake voids and how they interact with the whole filter cake morphology. During cake compression, we visualize reversible and irreversible compression and distinguish the two phenomena. Finally, we confirm the compression phenomena by modeling the soft particle filter cake using a CFD-DEM approach. The results underline the importance of considering the compression history when describing the filter cake morphology and its related properties. Thus, this study links single colloid movements and filter cake compression to the overall cake behavior and narrows the gap between single colloid events and the filtration process.Arne LükenLucas StüweJohannes LohausJohn LinkhorstMatthias WesslingNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Arne Lüken Lucas Stüwe Johannes Lohaus John Linkhorst Matthias Wessling Particle movements provoke avalanche-like compaction in soft colloid filter cakes
description	Abstract During soft matter filtration, colloids accumulate in a compressible porous cake layer on top of the membrane surface. The void size between the colloids predominantly defines the cake-specific permeation resistance and the corresponding filtration efficiency. While higher fluxes are beneficial for the process efficiency, they compress the cake and increase permeation resistance. However, it is not fully understood how soft particles behave during cake formation and how their compression influences the overall cake properties. This study visualizes the formation and compression process of soft filter cakes in microfluidic model systems. During cake formation, we analyze single-particle movements inside the filter cake voids and how they interact with the whole filter cake morphology. During cake compression, we visualize reversible and irreversible compression and distinguish the two phenomena. Finally, we confirm the compression phenomena by modeling the soft particle filter cake using a CFD-DEM approach. The results underline the importance of considering the compression history when describing the filter cake morphology and its related properties. Thus, this study links single colloid movements and filter cake compression to the overall cake behavior and narrows the gap between single colloid events and the filtration process.
format	article
author	Arne Lüken Lucas Stüwe Johannes Lohaus John Linkhorst Matthias Wessling
author_facet	Arne Lüken Lucas Stüwe Johannes Lohaus John Linkhorst Matthias Wessling
author_sort	Arne Lüken
title	Particle movements provoke avalanche-like compaction in soft colloid filter cakes
title_short	Particle movements provoke avalanche-like compaction in soft colloid filter cakes
title_full	Particle movements provoke avalanche-like compaction in soft colloid filter cakes
title_fullStr	Particle movements provoke avalanche-like compaction in soft colloid filter cakes
title_full_unstemmed	Particle movements provoke avalanche-like compaction in soft colloid filter cakes
title_sort	particle movements provoke avalanche-like compaction in soft colloid filter cakes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/265e8707a4b443a1aab14f91139cd109
work_keys_str_mv	AT arneluken particlemovementsprovokeavalanchelikecompactioninsoftcolloidfiltercakes AT lucasstuwe particlemovementsprovokeavalanchelikecompactioninsoftcolloidfiltercakes AT johanneslohaus particlemovementsprovokeavalanchelikecompactioninsoftcolloidfiltercakes AT johnlinkhorst particlemovementsprovokeavalanchelikecompactioninsoftcolloidfiltercakes AT matthiaswessling particlemovementsprovokeavalanchelikecompactioninsoftcolloidfiltercakes
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Particle movements provoke avalanche-like compaction in soft colloid filter cakes

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