Abstract:
A continuous adsorption study in a fixed-bed column was carried out by using IS:sand mixture as an adsorbent
for the removal of As(III) from aqueous solution. The column experiments were conducted to study the effect of important
parameters such as flow rate and bed depth on breakthrough curve and adsorption capacity. The Bed Depth Service Time
model (BDST) was applied to the experimental data to represent the breakthrough curve and determine the characteristic
design parameters of the column. The calculated adsorption capacity (N0) and the rate constant (K) were 55.2 mg/cm3 and
12.2 cm3/mg/h, respectively. It can be noticed that the IS:sand mixture can be used with good performances as adsorbent
material in the removal process of As(III) on column studies.
Keywords:
As(III) removal, column study, BDST model
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