About: Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper deals with the dependence of aggregate properties on the shear rate (G) in the aggregation process and at steady state. Natural raw water and ferric sulphate were aggregated in a Taylor–Couette reactor. The methods of image and fractal analysis were used to determine the aggregate size and structure. It was observed that at the early phase of aggregation, the aggregate growth rate is higher for lower shear rates. At G150 s1, the time aggregation curve contains the local maximum before reaching the steady state. Moreover, the different extent of break-up and restructuring was proved for different values of shear rate. At G200 s1, the aggregation curve misses the local extreme completely. Itwas found thatwith increasing shear rate (G=21.2–347.9 s1), the aggregates are smaller (d=1504–56 μm),more compact (D2=1.54–1.91) and more regular (Dpf=1.37–1.10). A relationship for the description of dependence of fractal dimension on the shear rate was also suggested. The paper deals with the dependence of aggregate properties on the shear rate (G) in the aggregation process and at steady state. Natural raw water and ferric sulphate were aggregated in a Taylor–Couette reactor. The methods of image and fractal analysis were used to determine the aggregate size and structure. It was observed that at the early phase of aggregation, the aggregate growth rate is higher for lower shear rates. At G150 s1, the time aggregation curve contains the local maximum before reaching the steady state. Moreover, the different extent of break-up and restructuring was proved for different values of shear rate. At G200 s1, the aggregation curve misses the local extreme completely. Itwas found thatwith increasing shear rate (G=21.2–347.9 s1), the aggregates are smaller (d=1504–56 μm),more compact (D2=1.54–1.91) and more regular (Dpf=1.37–1.10). A relationship for the description of dependence of fractal dimension on the shear rate was also suggested. (en)
Title	Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state (en)
skos:prefLabel	Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state (en)
skos:notation	RIV/67985874:_____/13:00384987!RIV13-AV0-67985874
http://linked.open...avai/predkladatel	Ústav pro hydrodynamiku AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP105/11/0247)
http://linked.open...iv/cisloPeriodika	February
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Bubáková, Petra Pivokonský, Martin Filip, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav pro hydrodynamiku AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	71729
http://linked.open...ai/riv/idVysledku	RIV/67985874:_____/13:00384987
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	aggregation; aggregate size; fractal dimension; shear rate; steady state; time evolution (en)
http://linked.open.../riv/klicoveSlovo	time evolution aggregate size steady state aggregation fractal dimension shear rate
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[F34E941BD898]
http://linked.open...i/riv/nazevZdroje	Powder Technology
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Characterisation of algal organic matter and its effect on coagulation/flocculation process
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	235
http://linked.open...iv/tvurceVysledku	Bubáková, Petra Filip, Petr Pivokonský, Martin
issn	0032-5910
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.powtec.2012.11.014

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