Chapter 4
The blue and red dotted lines show 1:1 stoichiometry of CeTAB with 100 ppm /
200 ppm naphthenate (2.25×1 O’514.50×10^5 M). For both cases adding 100 ppm I
200 ppm naphthenate, as concentration of naphthenate increases, water-wet
fraction of kaolinite increases to maximum and then decreases. The optimal
concentration of C8TAB (water-wet fraction of kaolinite reaches maximum) is
close to the 1:1 stoichiometry value (equal molar concentration of C8TAB and
naphthenate) with 100 ppm 1200 ppm naphthenate. If the amount of naphthenate
doubles, the optimal concentration of C8TAB also doubles.

CJAB (ppm)
O
Figure 4.6 Water-wet fraction of kaolinite with 100/ 200 ppm naphthenate adding
different amount of C8TAB at pH 8.3
99
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