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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

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one publication added to basket [202429]

A two-class population balance equation yielding bimodal flocculation of marine or estuarine sediments Lee, B.J.; Toorman, E.; Molz, F.J.; Wang, J. (2011). A two-class population balance equation yielding bimodal flocculation of marine or estuarine sediments. Wat. Res. 45(5): 2131-2145. http://dx.doi.org/10.1016/j.watres.2010.12.028 In: Water Research. Elsevier: Oxford; New York. ISSN 0043-1354; e-ISSN 1879-2448, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 280274 [ download pdf ] Waterbouwkundig Laboratorium: Non-open access 218298 [ aanvragen ]

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Trefwoorden

Sediments Separation > Chemical precipitation > Flocculation Marien/Kust; Brak water

Author keywords

Sediment; Flocculation; Population balance equation; Bimodal; Microfloc; Macrofloc

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Auteurs		Top
Lee, B.J., meer Toorman, E., meer Molz, F.J. Wang, J., meer

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Abstract

Bimodal flocculation of marine and estuarine sediments describes the aggregation and breakage process in which dense microflocs and floppy macroflocs change their relative mass fraction and develop a bimodal floc size distribution. To simulate bimodal flocculation of such sediments, a Two Class Population Balance Equation (TCPBE), which includes both size-fixed microflocs and size varying macroflocs, was developed. The new TCPBE was tested by a model-data fitting analysis with experimental data from 1-D column tests, in comparison with the simple Single-Class PBE (SCPBE) and the elaborate Multi-Class PBE (MCPBE). Results showed that the TCPBE was the simplest model that is capable of simulating the major aspects of the bimodal flocculation of marine and estuarine sediments. Therefore, the TCPBE can be implemented in a large-scale multi-dimensional flocculation model with least computational cost and used as a prototypic model for researchers to investigate complicated cohesive sediment transport in marine and estuarine environments. Incorporating additional biological and physicochemical aspects into the TCPBE flocculation process is straight forward also.

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