Novel Carbon-Based Nanoadsorbents for Removal of Synthetic Textile Dyes from Wastewaters - Green Chemistry for Dyes Removal from Wastewater - page 50

Table 2.2 ( Co nt .)

Adsorbent Target dye Conc. pH Temp.

(K)

Contact
time (h)

Adsorption
capacity

Isotherm Kinetic

model

hermodynamics Ref.

Magnetic
MWCNTs

Methylene Blue 1.4-37.4 mg L -1 7.0 298 ± 2 24 11.86 mg g -1 Freundlich Pseudo-

second-
order

— [106]

Magnetic
MWCNTs

Neutral Red 1.4-37.4 mg L -1 7.0 298 ± 2 24 9.77 mg g -1 Freundlich Pseudo-

second-
order

— [106]

Magnetic
Polymer
MWCNTs

Orange II 5-25 mg L -1 6.2 298

308
318

6 67.57 mg g -1

109.89 mg g -1
83.33 mg g -1

Langmuir Pseudo-

second-
order

— [107]

Magnetic
Polymer
MWCNTs

Sunset Yellow
FCF

5-25 mg L -1 6.2 298

308
318

6 85.47 mg g -1

98.04 mg g -1
76.92 mg g -1

Langmuir Pseudo-

second-
order

— [107]

Magnetic
Polymer
MWCNTs

Amaranth 5-25 mg L -1 6.2 298

308
318

6 47.39 mg g -1

63.29 mg g -1
57.14 mg g -1

Langmuir Pseudo-

second-
order

— [107]

Magnetic
chitosan/
γ-Fe 2 O 3 /
MWCNTs

Methyl Orange 5-50 mg L -1 — 297

312
323

5 66.09 mg g -1

60.94 mg g -1
60.50 mg g -1

Langmuir Pseudo-

second-
order

Exothermic [108]

MWCNT-
Starch-
Iron oxide

Methylene Blue 373.9 mg L -1 — — 6 93.7 mg g -1 — Pseudo-

second-
order

— [109]