Table 7 IPDM results of adsorption of Cr6+ ions and MV40 dye by CAC-IO adsorbent (Initial concentration = (100–400 mg L–1), adsorbent doses = (1.0–2.5 g L−1), Temp. = (25 °C)).

From: Synthesis and characterization of iron oxide-commercial activated carbon nanocomposite for removal of hexavalent chromium (Cr6+) ions and Mordant Violet 40 (MV40) dye

Parameter

Cr6+ ions

MV40 dye

CAC-IO (g·L−1)

Pollutant (mg L−1)

Кdif

C

R2

Кdif

C

R2

1.00

100

1.440

57.51

0.923

0.111

98.57

0.720

150

2.170

75.57

0.895

0.163

147.74

0.910

200

2.070

96.45

0.951

0.208

197.10

0.647

300

4.440

119.48

0.995

0.416

294.36

0.808

400

3.460

197.11

1.000

0.391

393.11

0.816

1.50

100

1.050

45.94

0.967

0.147

64.91

0.555

150

1.320

62.59

0.917

0.035

99.35

0.719

200

2.010

68.91

0.993

0.481

129.10

0.672

300

1.550

113.84

0.978

0.319

196.86

0.758

400

1.880

140.25

0.984

0.273

262.42

0.765

2.00

100

0.500

43.09

0.884

0.015

49.62

0.602

150

1.210

55.89

0.937

0.038

74.25

0.530

200

1.590

67.39

0.975

0.046

98.87

0.625

300

1.820

93.08

0.951

0.115

148.02

0.782

400

1.120

131.73

0.912

0.097

197.87

0.572

2.50

100

0.270

36.06

0.804

0.011

39.65

0.601

150

0.800

49.09

0.903

0.023

59.50

0.856

200

1.270

53.91

0.975

0.046

79.18

0.584

300

1.640

81.18

0.923

0.024

119.27

0.502

400

1.360

107.08

0.984

0.173

157.30

0.845

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