Novel Carbon-Based Nanoadsorbents for Removal of Synthetic Textile Dyes from Wastewaters - Green Chemistry for Dyes Removal from Wastewater - page 48

Table 2.2 ( Co nt .)

Adsorbent Target dye Conc. pH Temp.

(K)

Contact
time (h)

Adsorption
capacity

Isotherm Kinetic

model

hermodynamics Ref.

f- MWCNTs Methyl Red 5-60 mg L -1 4.0 Room

temp.

0.4 108.69 mg g -1 Langmuir Pseudo-

second-
order

Endothermic [95]

f- MWCNTs Congo Red 50-400 mg L -1 3.0 — — 148.08 mg g -1 Langmuir,

Freundlich,
Te m k i n

Pseudo-
irst-
order

— [96]

f- MWCNTs Reactive Green

HE4BD

50-400 mg L -1 5.0 — — 151.88 mg g -1 Langmuir,

Freundlich,
Te m k i n

Pseudo-
irst-
order

— [96]

f- MWCNTs Golden

Ye l l o w
MR

50-400 mg L -1 7.0 — — 141.61 mg g -1 Langmuir,

Freundlich,
Te m k i n

Pseudo-
irst-
order

— [96]

f- MWCNTs Malachite

Green

25-100 mg L -1 7.0 298 1.3 142.85 mg g -1 Langmuir Pseudo-

irst-order

— [97]

Chitosan/
MWCNTs

Congo Red 10-1000 mg L -1 5.0 303 — 450.4 mg g -1 Langmuir, Sips Pseudo-

second-
order

— [98]

Calcium
alginate/
MWCNTs

Methyl Orange — 7.0 298 ± 1 2 14.13 mg g -1 Langmuir — — [99]

NiFe 2 O 4 /
MWCNTs

Toluidine Blue 20-65 mg L -1 — 298

313
323

4.1 25 mg g -1

32.26 mg g -1
38.02 mg g -1

Langmuir Pseudo-

second-
order

Endothermic [100]