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dc.contributor.authorMasaló Llorà, Ingrid
dc.contributor.authorGuadayol, Oscar
dc.contributor.authorPeters, Francesc
dc.contributor.authorOca Baradad, Joan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
dc.date.accessioned2013-05-06T11:20:17Z
dc.date.created2008-01
dc.date.issued2008-01
dc.identifier.citationMasaló, I. [et al.]. Analysis of sedimentation and resuspension processes of aquaculture biosolids using an oscillating grid. "Aquacultural engineering", Gener 2008, vol. 2, núm. 38, p. 135-144.
dc.identifier.issn0144-8609
dc.identifier.urihttp://hdl.handle.net/2117/19103
dc.descriptionMenció d'Honor 2010 que atorga l'Aquacultural Engineering Society
dc.description.abstractSedimentation and resuspension processes of aquaculture biosolids (non-ingested feed and faeces) are analysed using vertically oscillating grids as a source of turbulence in fluid tanks. An oscillating grid system consists of a container in which a grid is stirred vertically generating a well-known turbulent field that is function of amplitude and frequency of oscillation, distance between grid and measurement point, and mesh spacing of the grid. The grid used in this study had a mesh spacing of 1.2 cm, and was calibrated using different amplitudes (1, 1.5 and 2 cm), frequencies (from 1 to 6 Hz) and distances (2.4, 2.7 and 3 cm). After calibration, the turbulence needed to resuspend biosolids and to maintain them in the water column following different times of consolidation, and with biosolids of different origin, was analysed. It was observed that the turbulence needed to resuspend aquaculture biosolids increased with the time of consolidation. When the turbulence was decreased after a resuspension process, the next sedimentation of biosolids showed a hysteretic behaviour: turbulence needed to resuspend a fixed percent of biosolids from the tank bottom is substantially higher than that needed to maintain the same percentage suspended in the water column. Differences in resuspension behaviour of biosolids originated in different tanks were also observed. The method provides useful information that can be compared with turbulence generated by fish swimming activity, in order to determine the culture conditions, which can promote self-cleaning conditions in a particular tank.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria agroalimentària::Pesca::Aqüicultura
dc.subject.lcshOrganic aquaculture
dc.subject.otherTurbulence
dc.subject.otherFish faeces
dc.subject.otherSolid waste
dc.subject.otherResuspension
dc.subject.otherOscillating grid
dc.titleAnalysis of sedimentation and resuspension processes of aquaculture biosolids using an oscillating grid
dc.typeArticle
dc.subject.lemacAquicultura orgànica
dc.contributor.groupUniversitat Politècnica de Catalunya. AQUAL - Aqüicultura i qualitat dels productes aquàtics
dc.identifier.doi10.1016/j.aquaeng.2008.01.004
dc.description.peerreviewedPeer Reviewed
dc.description.awardwinningAward-winning
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac666836
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorMasaló, I.; Guadayol, O.; Peters, F.; Oca, J.
local.citation.publicationNameAquacultural engineering
local.citation.volume2
local.citation.number38
local.citation.startingPage135
local.citation.endingPage144


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