The effect of shear rate on aggregate size distribution and structure at steady state: a comparison between a Taylor–Couette reactor to a mixing tank

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F13%3A00393135" target="_blank" >RIV/67985874:_____/13:00393135 - isvavai.cz</a>
Result on the web
<a href="https://iwaponline.com/aqua/article-abstract/62/5/288/29147/The-effect-of-shear-rate-on-aggregate-size?redirectedFrom=fulltext" target="_blank" >https://iwaponline.com/aqua/article-abstract/62/5/288/29147/The-effect-of-shear-rate-on-aggregate-size?redirectedFrom=fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2166/aqua.2013.005" target="_blank" >10.2166/aqua.2013.005</a>

Result language
angličtina
Original language name
The effect of shear rate on aggregate size distribution and structure at steady state: a comparison between a Taylor–Couette reactor to a mixing tank
Original language description
The paper deals with the dependence of aggregate properties on the shear rate (G) at steady state. Aggregation of natural raw water and ferric sulphate was carried out in a laboratory Taylor–Couette reactor (TC) and continuous flow mixing tank (MT) with a paddle stirrer. Shear rates in the range of 20–350 s -1 were used.Methods of image and fractal analyses were used to determine the aggregate size and structure, respectively. It was found that the aggregate size decreased with increasing shear rate. There was a small difference in sizes of aggregates formed in TC and MT at G< 150 s -1, but at higher shear rates, almost no difference between TC and MT was observed. The D2 fractal dimension increased with increasing shear rate indicating that aggregates became less porous andmore compact. Moreover, a very closematch in D2 valueswas attained for both mixing devices. The Dpf fractal dimension decreased with increasing shear rate meaning that aggregates were more regular at higher shear rates, but jagged on the surface with irregular shape at lower shear rates. In contrast to D2, aggregates formed in MT were much more irregular (jagged) than those formed in TC.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
<a href="/en/project/GAP105%2F11%2F0247" target="_blank" >GAP105/11/0247: Characterisation of algal organic matter and its effect on coagulation/flocculation process</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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