Surfactant degreasing velocity is decided by oil globule diameter and it's distribution in boundary film. The velocity expression thus obtained, calculated the good values, but expressed no physical factor effects. These effects were studied using dimensional analysis. The degreasing velocity of a surfactant forming a stable emulsion is summarized as follows;
: water wetting area ratio, Te
: bath temperature, Cx
: oil concentration, Omax
: maximum oil concentration for degreasing, V
: agitation velocity, t: time, d1
: difference in oil and degreasing solution density, η: viscosity.
greatly increased Omax
. In high temperature and agitation velocity, degreasing velocity in little oil contamination was same as the initial bath.