. "Powder Technology" . . . "71729" . "RIV/67985874:_____/13:00384987" . . . "10"^^ . "CH - \u0160v\u00FDcarsk\u00E1 konfederace" . . "Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state"@en . "I, P(GAP105/11/0247)" . "3"^^ . "0032-5910" . "Bub\u00E1kov\u00E1, Petra" . . . . . "235" . "[F34E941BD898]" . "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\u2013Couette 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\u2013347.9 s1), the aggregates are smaller (d=1504\u201356 \u03BCm),more compact (D2=1.54\u20131.91) and more regular (Dpf=1.37\u20131.10). A relationship for the description of dependence of fractal dimension on the shear rate was also suggested." . . "Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state" . . "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\u2013Couette 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\u2013347.9 s1), the aggregates are smaller (d=1504\u201356 \u03BCm),more compact (D2=1.54\u20131.91) and more regular (Dpf=1.37\u20131.10). A relationship for the description of dependence of fractal dimension on the shear rate was also suggested."@en . . "February" . "RIV/67985874:_____/13:00384987!RIV13-AV0-67985874" . . . "Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state" . . . "10.1016/j.powtec.2012.11.014" . "Effect of shear rate on aggregate size and structure in the process of aggregation and at steady state"@en . "aggregation; aggregate size; fractal dimension; shear rate; steady state; time evolution"@en . . . "Pivokonsk\u00FD, Martin" . "Filip, Petr" . . . . "3"^^ .