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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 11, No. 1, 2014, pp. 87-96
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Bioline Code: st14010
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 11, No. 1, 2014, pp. 87-96
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Fixed-bed column study for the adsorptive removal of acid fuchsin using carbon–alumina composite pellet
Dutta, M. & Basu, J. K.
Abstract
The carbon–alumina composite pellet was
developed for the adsorption of acid fuchsin from its
aqueous solution. The composite pellet was characterized
using Brunauer–Emmett–Teller method, scanning Electron
Microscopy and Fourier Transform Infrared Spectroscopy.
The adsorption capacity of commercial alumina, commercial
activated carbon and the prepared composite pellet was
investigated against acid fuchsin, and the adsorption
capacity was found to be increased in the order of alumina <
carbon–alumina composite pellet < activated carbon.
Although the adsorption capacity of carbon–alumina
composite pellets was less than that of activated carbon, the
use of the pelletized form of the present adsorbent was
proven to be advantageous for the use in the packed-bed
column. The experimental data were fitted to Langmuir,
Freundlich and Temkin adsorption isotherms, and the
equilibrium behavior was well explained by Langmuir
isotherm. Besides, the kinetic behavior was well predicted
by pseudo-second-order kinetics. The effects of inlet dye
concentration (10–20 mg/L), feed flowrate (5–15 mL/min)
and bed height (2.54–7.62 cm) on the breakthrough characteristics
were investigated using a fixed-bed column. The
maximum removal capacity in the column study was found
to be 343.87 mg/L with an initial dye concentration and
flowrate of 20 and 10 mL/min according to Bohart–Adams
model. The breakthrough behavior was also effectively
described by the Yoon–Nelson and Clark models.
Keywords
Acid fuchsin; Bohart–Adams model; Carbon–alumina pellet; Clark model; Column study; Equilibrium study; Yoon–Nelson model
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