Comparison testing for the removal of mechanical emulsified oil from water was performed using polypropylene storm drain insert filtration fabric, and X-Tex-AC-100 filtration fabric. The first sets of tests were conducted to look at the efficiency of X-Tex-AC-100 to remove mechanical oil emulsion. 
A stock of 6,600-mg/l oil (50% motor oil/diesel) and water emulsion was made mechanically by blending and shaking in individual one liter bottles. The oil water emulsion was poured through a 3inch diameter filter housing holding one sheet of the polypropylene insert fabric and one sheet of the X-Tex-AC-100, one additional liter of water was passed through each filter apparatus, the water was captured in a separatory funnel and extracted by method 1664 to determine hexane extractable oil and grease. The Stock emulsion was analyzed for ppm oil by running the water through the empty filter holder accounting for retained oil on the bottle walls and filter housing. The same process was repeated using two layers of each material, the results obtained are as shown in figure 1 below.

Figure 1

Figure 2 illustrates the residual oil in the water after passing through each filter media.

Figure 2


Figure 3

Conclusion
These results demonstrate that X-Tex-AC-100 removes more of the mechanical emulsified oil than the polypropylene products (currently the industry standard).