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Propagation of a nonionic surfactant in radial sandstone cores
Author(s) -
Kwok W.,
Hayes R. E.,
NasrElDin H. A.
Publication year - 1995
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450730514
Subject(s) - pulmonary surfactant , adsorption , mass transfer , salinity , shear (geology) , flow (mathematics) , volumetric flow rate , thermodynamics , shear rate , materials science , chemical engineering , chemistry , mineralogy , chromatography , mechanics , geology , composite material , rheology , physics , oceanography , engineering
The dynamic adsorption of a nonionic surfactant, Triton X‐100®, on Berea sandstone with radial flow under a variety of injection rates, salinities and pH is examined. Mathematical modelling of the experimental data shows that the most consistent results are obtained using a kinetic hemimicelle model. The aggregation number (hemimicelle size) is independent of flow rate and salinity, but increases with increasing pH. In all cases, the aggregation number is lower under dynamic conditions than under static conditions, which is attributed to the shear force at the surface. The rate constants for adsorption increase with increasing flow rate, which is attributed to a decrease in mass transfer resistance.