Novel Carbon-Based Nanoadsorbents for Removal of Synthetic Textile Dyes from Wastewaters - Green Chemistry for Dyes Removal from Wastewater - page 60

Table 2.3 Reported results of batch adsorption studie s on the removal of dyes from water by graphene and its related materials.

Adsorbent Target dye Conc. pH Temp.

(K)

Contact
time (h)

Adsorption
capacity

Isotherm Kinetic

model

hermodynamics Ref.

Graphene Cationic Red

X-GRL

20-140 mg L -1 — 288

313
333

24 217.39 mg g -1

227.27 mg g -1
238.10 mg g -1

Langmuir Pseudo-

second-
order

Endothermic [114]

Graphene Methylene

Blue

20-120 mg L -1 — 293

313
333

— 153.85 mg g -1

185.19 mg g -1
204.08 mg g -1

Langmuir Pseudo-

second-
order

Endothermic [115]

Graphene Methyl Blue 5 mg L -1 — 303 96 1.52 g g -1 — — — [116]

Graphene
sponge

Methylene
Blue

2 × 10-4mol L -1 — 298 4 184 mg g -1 — — — [117]

Graphene
sponge

Rhodamine B 2 × 10-4mol L -1 — 298 4 72.5 mg g -1 — — — [117]

Graphene
sponge

Methyl
Orange

2 × 10-4mol L -1 — 298 24 11.5 mg g -1 — — — [117]

GO Methylene

Blue

0.188-1.000 g L -1 6.0 298 1 714 mg mg -1 Freundlich — [118]

GO Methylene

Blue

0.33-3.3 mg L -1 7.0 293 2 1.939 mg mg -1 Langmuir — — [119]

GO Methylene

Blue

10-50 mg L -1 10.0 — — 17.3 mg g -1 Langmuir Pseudo-

second-
order

— [120]

GO Methyl Violet 10-50 mg L -1 6.0 — — 2.47 mg g -1 Langmuir Pseudo-

second-
order

— [120]