Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/1396
Título: | Understanding adhesion: a means for preventing fouling |
Autor(es): | Oliveira, Rosário |
Palavras-chave: | Adhesion DLVO theory Surface free energy Hydrophobic interactions Steric forces Ionic strength Ion bridging |
Data: | 1997 |
Editora: | Elsevier 1 |
Revista: | Experimental Thermal and Fluid Science |
Citação: | "Experimental thermal and fluid science". ISSN 0894-1777. 14:4 (1997) 316-322. |
Relatório da Série N.º: | 1997;16 |
Resumo(s): | Adhesion of particulate materials is an important step in the formation of fouling. Because the size of such materials is generally less than 1μm, the phenomenon can be described in terms of colloid chemistry. Accordingly, the net force of interaction between foulants and the surface has been described in terms of DLVO theory (van der Waals attraction and electrostatic double-layer repulsion). However, those forces are sometimes not sufficient to describe the formation of fouling. Recent works have made it possible to calculate the effect of hydrophobic interactions and steric forces, which can also be taken into account. In aqueous media, the various types of interactions can be strongly affected by the pH, the ionic strength, the type of ions, and the presence of polymeric molecules. The objective of this work is to give a general overview of the basic physicochemical factors playing a role in fouling and to outline some practical aspects related to the theoretical reasoning to help prevent or at least mitigate fouling. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/1396 |
DOI: | 10.1016/S0894-1777(96)00134-3 |
ISSN: | 0894-1777 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1997-16[1].pdf | 644,3 kB | Adobe PDF | Ver/Abrir |