285
Granular
activated carbon
Purified by water, drying at 120 °C
(24 h)
Acid: indigo
carmine (other
name acid blue
74, food blue1)
Surface
area = 1403 m
2
/g
pH at zero-point
charge = 8.0
Effect of dose: 97.2% (dye initial
concentration 20 mg/L, dose – 0.2 g/L),
effect of pH: pH = 7, max. sorption
capacity 38 mg/g, effect of particle
diameter (2.5; 3,5; 7 mm): 30 mg/g
(2.5 mm), max. sorption capacity
133.8 mg/g at 45 °C, adsorption of indigo
carmine – endothermic process, the best
fit for the kinetic data – pseudo secondorder model
Secula
et al.
(2011)
Filtrasorb 400
activated carbon
None
Reactive:
remazol reactive
yellow, remazol
reactive black,
and remazol
reactive red
Surface
area = 1100 m
2
/g
Max. sorption capacities: remazol reactive
yellow 714 mg/g, remazol reactive black
278 mg/g, remazol reactive red 213 mg/g,
capacity drops in the multisolute system;
Langmuir and Redlich–Peterson models
show good fitting of equilibrium data
Al-Degs
et al.
(2007)
Powdered
activated carbon
None
Reactive: reactive
black 5
Surface
area = 900 m
2
/g
Max. sorption capacity: 58.82 mg/g, the
best fit for the kinetic data – pseudo
second-order model; Langmuir and
Freundlich models show good fitting of
equilibrium data
Eren and
Acar
(2006)
Where T
temperature
11 Characteristics and Adsorptive Treatment of Wastewaters Containing Dyes