||The paper evaluates the influence of selected process variables on the separation of oil from an oil-insaline
water emulsion performed using ultrafiltration. The experiments were carried out according
to the two-level factorial design with four factors 24
. The following variables were taken into account:
flow velocity (4, 5 m/s), transmembrane pressure (TMP) (0.1, 0.2 MPa), salt concentration (1.0%,
3.5%), and oil concentration (500, 1,500 ppm). The separation of the emulsion was characterized using
the initial permeation flux J0
, the steady-state permeation flux JSS, and the oil rejection coefficient r.
Based on the experimental results, a mathematical description of all the examined variables was
proposed in the form of linear and interaction relationships. Such an equation using normalized
variables enabled the influence of all process variables on the output quantities, that is, J0
, JSS, and r.
It was found that TMP had the greatest impact on the efficiency of the process. The presence of salt
caused a slight decrease in J0
and JSS, similar to as the presence of oil