To determine a method for separating the buffing compound and the cleaning solution.
Date Run:
01/11/2000
Experiment Procedure:
Twelve centrifuge tubes were filled with 10 mL of one of the cleaning/contaminant solutions. The tubes were placed into a Fisher Centrific® Centrifuge, Model 225 and run for varying time periods and speeds settings. Table 1 lists the times and speeds used. After each time period, one tube was analyzed for %Transmittance using a LaMotte’s Smart Colorimeter at 605 nm.
Table 1. Centrifuge Operating Conditions
Contaminant
Time
Speed
%T
1
0
0
58
1
5
1/4
68
1
5
1/2
72
1
5
3/4
74
1
10
3/4
75
1
30
3/4
79
2
0
0
72
2
30
3/4
85
SUBSTRATE MATERIAL: Liquid
CONTAMINANTS: Iron Oxide (buffing compound) 1-Coarse, 2-Fine
CONTAMINATING PROCESS USED: Received contaminated CLEANING METHOD: Centrifuge separation of Fe2O3 from cleaning solution.
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The centrifuge was able to separate out the iron oxide from the solution. It appears that the speed of the centrifuge and the time both have an impact on separating the oxide.
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