The break-up of thin liquid films due to the intensity of mass transfer in absorption

✍ Scribed by Abraham Tamir; José C. Merchuk; P.D. Virkar

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 559 KB
• Volume: 35
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(80)85132-3

✦ Synopsis

The break-up of thm hqmd films durmg gas absorption has conventmnally been attnbuted to the Marangom effect Pomt-to-pomt vanatlons m surface tenslon are thought to anse as a result of the absorption process, the consequent surface convection leading to the break-up of the film mto rivulets In this paper, attention is drawn to a relatively unknown type of mstablhty Induced by high mtenslty mterphase mass transfer This type of mstablhty may occur dunng the absorption of highly soluble gases and should be consldered m conjunction with any associated Marangom phenomena In the case of absorption of pure vapours or gases, point-to-pomt varlatlons in surface tenslon cannot occur and, under such condltlons, film break-up may be the result of mstabfilty induced by high interphase flux of solute Experiments on absorption of acetone into a spherical water film were carned out to support the above hypothesis, and a photographic study demonstrated the behavlour and break-up of the film