COALESCENCE OF SINGLE DROPS AT LIQUID-LIQUID AND LIQUID-SOLID INTERFACES.
Abstract
As part of a research and development program on fuel handling and decontamination, a study is being conducted to develop a better understanding of the basic phenomena involved in filter-separator operation. This study has led to the development of a new analytical model of coalescence processes. The model is based upon considerations of the dynamics of molecular processes in the vicinity of interfaces (either liquid-liquid or liquid-solid) and includes film-drainage as well as interface-coalescence phenomena. Experimental studies included the use of selected additives in either the aqueous drops and bulk phase or in the hydrocarbon continuous medium, or both. Liquid-liquid interfacial tension was varied from less than 10 to greater than 50 dynes/cm; viscosity of the hydrocarbon phase was varied from less than 1 to greater than 200 centistokes; and the average coalescence time ranged from less than 1 to greater than 300 seconds. The experimentally measured coalescence times and initial rates of contact angle decay have been correlated successfully in terms of the analytical model. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1967
- Accession Number
- AD0807293
Entities
People
- W. D. Weatherford Jr.
Organizations
- Southwest Research Institute