Novel Carbon-Based Nanoadsorbents for Removal of Synthetic Textile Dyes from Wastewaters - Green Chemistry for Dyes Removal from Wastewater - page 46

Table 2.2 ( Co nt .)

Adsorbent Target dye Conc. pH Temp.

(K)

Contact
time (h)

Adsorption
capacity

Isotherm Kinetic

model

hermodynamics Ref.

MWCNTs Acid

Red 183

— 6.0 298 2 45.2 mg g -1 Langmuir,

Freundlich

Pseudo-
second-
order

— [83]

MWCNTs Safranine O 10-50

mg L -1

1.0 Room

temp.

0.5 43.48 mg g -1 Temkin Pseudo-

second-
order

Endothermic [84]

MWCNTs Reactive

Red M-2BE

300-600
mg L -1

2.0 298

303
308
313
318
323

1 312.3 mg g -1

319.2 mg g -1
325.1 mg g -1
327.8 mg g -1
330.0 mg g -1
335.7 mg g -1

Liu Avrami

fractional

Endothermic [85]

MWCNTs Methyl Orange 10 mg L -1 — 293

303
313

2.5 44.16 mg g -1

47.56 mg g -1
54.09 mg g -1

— Pseudo-

second-
order

— [86]

MWCNTs Methyl Orange 20-40

mg L -1

— 273

298
318
333

3 50.25 mg g -1

51.784 mg g -1
52.43 mg g -1
52.86 mg g -1

Langmuir Pseudo-

second-
order

Endothermic [87]

MWCNTs Methylene Blue — — 303

313
338

— 54.54 mg g -1

52.51 mg g -1
43.98 mg g -1

Langmuir — — [88]

MWCNTs Orange II — — 303

338

— 66.12 mg g -1

57.34 mg g -1

Langmuir — — [88]