Chapter 4
4.2.4.3. Effect of amine oxide
Figure 4.11 shows water-wet fraction of 1.0 w.% kaolinite in toluene-brine
mixture (1:1, v∕v) with 100 ppm naphthenate adding 100 ppm / 1000 ppm amine
oxide at pH 8.3 24 hours after preparation. The green and black dashed lines
show water-wet fraction of kaolinite with or without naphthenate as control,
without amine oxide added. Sample adding 100 ppm amine oxide DO has largest
water-wet fraction of kaolinite (86%). Amine oxide DO was used as optimal
surfactant to find the optimal dosage.
Samples with 100 ppm naphthenate
Figure 4.11 Water-wet fraction of kaolinite with 100 ppm naphthenate adding 100/
1000 ppm amine oxide at pH 8.3
105
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