Axial variation of wetting efficiency and liquid-solid mass transfer in long trickle bed columns

dc.contributor.authorDu Toit, Elizabeth Louisa
dc.contributor.authorJoubert, Rita
dc.contributor.authorSaayman, Francois
dc.contributor.authorNicol, Willie
dc.contributor.emailwillie.nicol@up.ac.zaen_US
dc.date.accessioned2014-02-13T06:25:18Z
dc.date.issued2014-01
dc.description.abstractThe wetting efficiency and solid liquid mass transfer coefficient was measured separately and simultaneously using the electrochemical cell technique while varying the superficial liquid velocity and hydrodynamic state of the column by using different pre-wetting procedures. The wetting efficiency in columns with an aspect ratio - distance from distributor divided by column diameter – of up to 33, decreased with distance from the distributor regardless of the hydrodynamic state of the column. Although the solid liquid mass transfer coefficient also decreased with an increase in axial position, this decrease was much more significant where the pre-wetting procedure that resulted in a lower overall wetting efficiency was used. When a pre-wetting procedure that resulted in a higher average wetting efficiency was used, the liquid solid mass transfer coefficient was much less dependent on liquid velocity and only a relatively small decrease with axial position was observed. The results highlight the difference in surface renewal processes that is possible between columns operated at the same conditions but under different hydrodynamic states and emphasise the importance of hydrodynamic multiplicity when liquid redistribution is considered.en_US
dc.description.librarianhb2014en_US
dc.description.urihttp: pubs.acs.org/IECRen_US
dc.identifier.citationDu Toit, EL, Joubert, R, Saayman, F & Nicol, W 2014, 'Axial variation of wetting efficiency and liquid-solid mass transfer in long trickle bed columns', Industrial & Engineering Chemistry Research, vol. 53, no.1, pp. 494-497.en_US
dc.identifier.issn0888-5885 (print)
dc.identifier.issn1520-5045 (online)
dc.identifier.other10.1021/ie402286v
dc.identifier.urihttp://hdl.handle.net/2263/33412
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rights© 2013 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Industrial & Engineering Chemistry Researchen_US
dc.subjectTrickle bed reactoren_US
dc.subjectLiquid-solid mass transferen_US
dc.subjectWetting efficiencyen_US
dc.subjectElectrochemical measurementen_US
dc.titleAxial variation of wetting efficiency and liquid-solid mass transfer in long trickle bed columnsen_US
dc.typePostprint Articleen_US

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