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Scale-up rules for flocculation

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00313226" target="_blank" >RIV/68407700:21220/17:00313226 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1016/j.minpro.2017.08.003" target="_blank" >http://dx.doi.org/10.1016/j.minpro.2017.08.003</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.minpro.2017.08.003" target="_blank" >10.1016/j.minpro.2017.08.003</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Scale-up rules for flocculation

  • Original language description

    We present here a study of three baffled tanks, 0.15 m, 0.20m and 0.30min inner diameter, agitated by Rushton turbine, with reference to scaling up the flocculation kinetics. A clay slurry was used as a model wastewater. The experimentswere carried out at mixing intensity 40 W/m3 and clay concentration 0.58 g/L. The model wastewater was flocculated with the Sokoflok 16A organic flocculent (solution 0.1 wt%) in the range of dimensionless flocculent dosage DF from 0.448 to 5.241 mg/g. The flocs that formed were separated bymeans of sedimentation. The operational conditions were designed according to following proposed scale-up rules: i) P/V = const., ii) tF * = N.tF=const., iii)DF * =const. and iv) used=const. Applying the proposed scale-up rules, the flocculation efficiency was found to be practically the same irrespective of vessel size and flocculation dosage. For the given flocculated system and process conditions, the maximum degree of turbidity removal Ze * max=96.1± 0.6% was found for dimensionless flocculation time 1916 ± 5% and dimensionless flocculent dosage DF * =3.128 mg/g ± 8%, regardless of vessel size. The approach to scale-up proposed by Camp (1955) is discussed and criticized in the light of present-day mixing theory, and an explanation is offered of the shortcomings of this approach, and why it gives incorrect scale-up results.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20703 - Mining and mineral processing

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    International Journal of Mineral Processing

  • ISSN

    0301-7516

  • e-ISSN

    1879-3525

  • Volume of the periodical

    167

  • Issue of the periodical within the volume

    august

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    7

  • Pages from-to

    79-85

  • UT code for WoS article

    000412962500010

  • EID of the result in the Scopus database

    2-s2.0-85028467639