Table 10 The comparison of maximum adsorption capacities for MG dye on metal oxide-based adsorbents.

Chitosan-ZnO

Adsorbent dose (600 mg/40 mL), dye conc. (2.3 ppm), pH (8), time (180 min.) and temp. (25 °C)

11.00

⁵⁵

CuO

Adsorbent dose (400 mg/50 mL), dye conc. (10 ppm), pH (7), time (80 min.) and temp. (25 °C)

1.95

⁵⁶

MnTiO₃/TiO₂

Adsorbent dose (50 mg/50 mL), dye conc. (20 ppm), pH (7), time (40 min.) and temp. (25 °C)

11.76

⁵⁷

γ-Fe₂O₃/MWCNTs/cellulose

Adsorbent dose (70 mg/100 mL), dye conc. (5 ppm), pH (7), time (90 min.) and temp. (40 °C)

47.61

⁵⁸

Fe₃O₄/Ti₃C₂

Adsorbent dose (30 mg/10 mL), dye conc. (10 ppm), pH (6.5), time (60 min.) and temp. (40 °C)

3.14

⁵⁵

rGO/ γ-Fe₂O₃

Adsorbent dose (200 mg/100 mL), dye conc. (80 ppm), pH (8), time (113 min.) and temp. (25 °C)

40.64

This study

Adsorbent dose (122 mg/100 mL), dye conc. (80 ppm), pH (10), time (113 min.) and temp. (25 °C)

64.26