000908178 001__ 908178
000908178 005__ 20230310131340.0
000908178 0247_ $$2Handle$$a2128/31355
000908178 037__ $$aFZJ-2022-02436
000908178 1001_ $$0P:(DE-Juel1)173831$$aPark, Gunwoo$$b0$$eCorresponding author$$ufzj
000908178 1112_ $$aThe 11th International Colloids Conference$$cLisbon$$d2022-06-12 - 2022-06-15$$gCOLL2022$$wPortugal
000908178 245__ $$aCritical Flux in Particle Ultrafiltration of Variable Sizes: Using Interacting Brownian Dispersions
000908178 260__ $$c2022
000908178 3367_ $$033$$2EndNote$$aConference Paper
000908178 3367_ $$2BibTeX$$aINPROCEEDINGS
000908178 3367_ $$2DRIVER$$aconferenceObject
000908178 3367_ $$2ORCID$$aCONFERENCE_POSTER
000908178 3367_ $$2DataCite$$aOutput Types/Conference Poster
000908178 3367_ $$0PUB:(DE-HGF)24$$2PUB:(DE-HGF)$$aPoster$$bposter$$mposter$$s1656057086_21490$$xAfter Call
000908178 520__ $$aCross-flow ultrafiltration (UF) is a pressure-driven separation process used, e.g., for water purification, blood treatment by (artificial) kidneys, and protein enrichment. In this process, a feed dispersion is steadily pumped through a channel consisting of solvent-permeable membrane walls. The applied transmembrane pressure (TMP) causes solvent to flow out of channel so that a particle-enriched diffuse layer is formed near the membrane walls. This so- called concentration-polarization (CP) reduces the permeate flux and hence the filtration efficiency, due to osmotic pressure built-up counter-acting the TMP. The particle concentration inside the CP layer increases with the applied TMP. When it reaches a freezing concentration where the particles are immobilized, an unwarranted cake layer is formed at the membrane walls. The permeate flux value signaling the onset of cake formation is called the critical flux. Predictions of the critical flux are commonly made using standard film theory which, however, applies only to colloidal particles and proteins of a diameter smaller than 10 nm. When the diameter roughly exceeds 100 nm, the predicted critical flux is an order-of- magnitude smaller than the experimental one. This is referred to as the critical flux paradox.We present theoretical results for the UF concentration and flow profiles, and the critical flux for dispersions of various size of particles. The results are obtained using a recently published modified boundary layer approximation (mBLA) method of cross-flow UF. The semi-analytic mBLA method provides an accurate description of UF concentration and flow profiles, on accounting for the concentration dependence of dispersion transport properties and osmotic pressure. The considered model dispersions encompass impermeable and permeable hard spheres and charge-stabilized particles. For hard-sphere dispersions, the mBLA method is extended to the microfiltration regime where shear-induced migration becomes important.
000908178 536__ $$0G:(DE-HGF)POF4-5241$$a5241 - Molecular Information Processing in Cellular Systems (POF4-524)$$cPOF4-524$$fPOF IV$$x0
000908178 536__ $$0G:(GEPRIS)221475706$$aSFB 985 B06 - Kontinuierliche Trennung und Aufkonzentrierung von Mikrogelen (B06) (221475706)$$c221475706$$x1
000908178 7001_ $$0P:(DE-Juel1)130858$$aNaegele, Gerhard$$b1$$ufzj
000908178 8564_ $$uhttps://juser.fz-juelich.de/record/908178/files/gunwoo_COLL2022_poster.pdf$$yOpenAccess
000908178 909CO $$ooai:juser.fz-juelich.de:908178$$pdriver$$pVDB$$popen_access$$popenaire
000908178 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)173831$$aForschungszentrum Jülich$$b0$$kFZJ
000908178 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130858$$aForschungszentrum Jülich$$b1$$kFZJ
000908178 9131_ $$0G:(DE-HGF)POF4-524$$1G:(DE-HGF)POF4-520$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5241$$aDE-HGF$$bKey Technologies$$lNatural, Artificial and Cognitive Information Processing$$vMolecular and Cellular Information Processing$$x0
000908178 9141_ $$y2022
000908178 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000908178 920__ $$lyes
000908178 9201_ $$0I:(DE-Juel1)IBI-4-20200312$$kIBI-4$$lBiomakromolekulare Systeme und Prozesse$$x0
000908178 9801_ $$aFullTexts
000908178 980__ $$aposter
000908178 980__ $$aVDB
000908178 980__ $$aUNRESTRICTED
000908178 980__ $$aI:(DE-Juel1)IBI-4-20200312