Biosorption of Acid Dye in Single and Multidye Systems onto Sawdust of Locust Bean (Parkia biglobosa) Tree

Table 3

Thermodynamic parameters for adsorption of Acid Blue 161 in single, binary, and ternary mixture on RSD.

Temp.

Single system

Binary system (AB + MB)

Binary system (AB + RB)

Ternary system (AB + MB + RB)

(kJ/mol)

(kJ/mol)

(J/molK)

(kJ/mol)

(KJ/mol)

(J/molK)

(kJ/mol)

(KJ/mol)

(J/molK)

(kJ/mol)

(KJ/mol)

(J/molK)

303

−0.89

−0.72

−1.62

−2.29

313

−1.62

15.91

55.55

−2.20

19.60

68.19

−2.31

11.37

43.17

−3.09

26.31

93.78

323

−1.82

−2.60

−2.51

−3.41

333

−2.68

−2.80

−2.98

−5.36

AB: Acid Blue 161; MB: Methylene Blue; RB: Rhodamine B.