Cavitation of oil and water Sample Clauses

Cavitation of oil and water. In the first solubilisation experiment, an elaborate factor test was utilized (Appendix A). 1.5 L water samples with 2, 8 and 16 g of rapeseed oil was cavitated with 3 orifice types (2, 3, 5) and 4 different number of cycles (2, 5, 10, 20). Each treated sample was measured for turbidity (DR 28000, Xxxx Xxxxx). Afterwards the data from the experiment were processed in Minitab® Statistical Software. In the second experiment, the emulsion test, samples with 1.5 L of water and 8 and 16 g of rapeseed oil were cavitated using two orifices (3, 5), resulting in 4 samples in total. Each treated sample was poured into a 250 mL batch bottle and sealed. The bottles were monitored and each half an hour, a picture was taken. 21 hours after the treatment, a final picture was taken (Appendix B). In the third experiment, a sample of 1.5 L of water and 16 g of rapeseed oil was cavitated with 10 cycles and orifice 2. The treated sample were transferred into a 1 L bottle. After 0, 1, 2, 3 and 24 hours after the treatment, a sample was extracted from the middle of the bottle with a pipette and diluted by a factor of 8 as well as 10 for turbidity and COD measurements respectively. The turbidity measurements were compared to another sample using the same ratio of rapeseed oil and water. However, this sample was shaken in a 250 mL batch bottle for 2 minutes instead of cavitated and the turbidity was only measured each minutes for 15 minutes. The turbidity readings from the shaken sample was converted into COD reading with a linear regression (Appendix C).The COD measurements from the cavitated and shaken sample were compared to the theoretical oxygen demand (ThOD) of the sample. The ThOD was calculated according to Appendix C.