The name is absent

Chapter 4

kaolinite as the function of Na2SO4 concentration in 0.05 M NaCI brine at pH 6.5.

The adsorption constant ∕<s04 is 0.195 m³∕mol.

C(Na₂SO₄) (M)

x10³

Figure 4.23 Kaolinite zeta potential in 0.05 M NaCI brine adding Na2SO4 at pH 6.5

In order to study the effect of bicarbonate, zeta potentials of kaolinite with
different NaHCO3 in de-ionized water at pH 8.3 were measured. In NaHCO3
solution, positively charged sites -AOH2⁺ can adsorb HCO₃^ ion and become
neutral sites -AOH2HCO3.

-AOH₂ +HCO₃ f≡ -AOH₂HCO₃                                  [4.34]

_κ _ [AOH₂HCO₃]        [AOH₂HCO₃]

^hc°³ [AOH₂]α∕HCO₃) [AQH₂ ]α_z, (HCO₃ )exp(-)

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