Liquid Phase Equilibrium Relationships

The liquid phase equilibrium is calculated by means of:

• the dissociation of water;

• the condition of electroneutrality; and

• mass balances for each component.

Figure 2 Development of the generalized separation factor for the weakly acidic ion exchange resins (A) LEWATIT CNP 80 and (B) AMBERLITE IRC 50 (by courtesy of Marcel Dekker Inc.).

c0 (NaOH) = 10 mmol L"1

• 0 mmol L~1

NaCI

^ * 5 mmol L"1

NaCI

♦ 10 mmol L"1

NaCI

▼ 20 mmol L"1

NaCI

)

K (CI)

5 mmol L NaN03 ♦ 10 mmol L"1 NaN03 ▼ 20 mmol L"1 NaNO,
10

tTA

/ °°

(NaOH) = 10 mmol L"1

0 mmol L"1

Na2S04

5 mmol L"1

Na2S04

10 mmol L"1

Na2S04

20 mmol L"1

Na2S04

50 mmol L"1

Figure 3 Development of the generalized separation factor for the weakly basic ion exchange resin AMBERLITE IRA 93 (by courtesy of Marcel Dekker Inc.).

Activity coefficients in the liquid phase can be calculated from the ionic strength using the extended Debye-HUckel relationship.

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Solar Panel Basics

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