Abstract
Adsorption using sawdust from Malaysian teak wood as adsorbent has been studied in order to remove reactive blue dye from aqueous solutions (AS). The dye removal study comprised of investigation of parameters such as concentration of dye, pH, agitation time, and temperature. Optimization was performed using response surface methodology. Kinetics of adsorption of reactive blue dye with activated sawdust was analyzed using Lagergren’s kinetic models, and it was found that the dye reduction efficiency by activated sawdust followed pseudo-second-order kinetic model. Langmuir and Freundlich’s isotherm models were used for the fitment of batch adsorption experimental data, and it was observed that Langmuir model was found to agree with the values obtained by experimentation based on regression analysis and RMSD values. The study showed that activated sawdust as a promising adsorbent for the reduction of reactive blue dye from AS.
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Abbreviations
- Q o :
-
Adsorption capacity (mg/g)
- k f :
-
Adsorption capacity (mg/g)
- t :
-
Agitation time (min)
- q :
-
Amount of adsorbate adsorbed (mg/g)
- q e :
-
Amount adsorbed at equilibrium (mg/g)
- b :
-
Constant (L/mg)
- n :
-
Constant (–)
- R L :
-
Dimensionless constant (–)
- c e :
-
Equilibrium concentration of adsorbate (mg/L)
- K 1 :
-
Lagergren’s pseudo-first-order rate constant (min−1)
- K 2 :
-
Lagergren’s pseudo-second-order rate constant (g mg−1 min−1)
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Ratnamala, G.M., Deshannavar, U.B., Munyal, S. et al. Adsorption of Reactive Blue Dye from Aqueous Solutions Using Sawdust as Adsorbent: Optimization, Kinetic, and Equilibrium Studies. Arab J Sci Eng 41, 333–344 (2016). https://doi.org/10.1007/s13369-015-1666-1
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DOI: https://doi.org/10.1007/s13369-015-1666-1