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

• Type: Article in International Scientific Journal
• Date: 1988

Authors

F. Xavier Malcata (Author) Other

Journal

Title: International Journal of Heat and Mass Transfer

Vol. 31

Pages: 567-575

ISSN: 0017-9310

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 5 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9