DOUBLE SURFACE-RENEWAL MODEL FOR THE PREDICTION OF MASS-TRANSFER RATES DURING BUBBLE FORMATION WITH INSTANTANEOUS REACTION ON THE LIQUID SIDE

• Tipo: Artigo em Revista Científica Internacional
• Data: 1988

Autores

F. Xavier Malcata (Autor) Outra

Revista

Título: International Journal of Heat and Mass Transfer

Vol. 31

Páginas: 567-575

ISSN: 0017-9310

Editora: Elsevier

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-001-TH6

DOI: 10.1016/0017-9310(88)90038-5

Abstract (EN): Desorption of a component from a gas mixture being injected through a submerged nozzle, during the bubble formation stage, is theoretically studied. The solute is assumed to suffer an instantaneous reaction on the liquid side, the reaction plane being on the liquid/gas interface. The volume elements on the gas bubble are assumed to result from a forced surface renewal coupled with a natural surface renewal, both achieved via gas elements with fresh composition. A surface residence time distribution is thus obtained, and desorption rates are calculated from the relevant variables, assuming non-steady state, unidimensional diffusion in a semi-infinite medium as the main mass transfer mechanism. Comparison of the model with experimental data is reported, physical evidence being predicted better than with previous models. © 1988.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9