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Table 1 Langmuir and Freundlich models for the removal safranin dye by copolymer 6 and composite 7

From: Efficient removal of safranin from aqueous solution using a new type of metalated highly self-doped polyaniline nanocomposite

Isotherm model

6

7

Langmuir model

 Q0 (mg g−1)

71.43

82.64

 b (L mg−1)

0.027

0.027

 R2

0.93

0.91

Freundlich model

 1/n

0.712

0.697

 kf

2.822

3.348

 R2

0.852

0.815