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dc.creatorR. Rosmaninho
dc.creatorF. Rocha
dc.creatorG. Rizzo
dc.creatorH. Müeller-Steinhagen
dc.creatorL. F. Melo
dc.description.abstractModifying the surface properties of the stainless steel used in heat exchangers to decrease its tendency for the building-up of milk deposits seems to be a promising strategy to reduce fouling during heat treatment in the dairy industry. In this work, several modified stainless steel surfaces, obtained by reactive magnetic sputtering, were used as fouling supports for a milk-simulating mineral solution under constant conditions of temperature, pH and calcium concentration. The aim of the work was to quantify deposition and removal parameters, based on the influence of surface energy properties on the type of deposit. The fouling process was characterized by the surface reaction coefficient of the ions present in solution, as well as the adhesion coefficients of the particles formed in the bulk. An insight on the mechanisms of deposition and removal processes was achieved, as well as by the dependence between those two processes and the electron-donor component (gamma(-)) of the surface energy of the stainless steel-based materials. The surfaces with lower gamma(-) were found to have lower amounts of deposit, and this deposit could be more easily cleaned than for the other surfaces (including the non-modified stainless steel).
dc.subjectEngenharia química, Engenharia química
dc.subjectChemical engineering, Chemical engineering
dc.titleCalcium phosphate fouling on TiN-coated stainless steel surfaces: Role of ions and particles
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.subject.fosCiências da engenharia e tecnologias::Engenharia química
dc.subject.fosEngineering and technology::Chemical engineering
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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