It has been observed that the percentage
adsorption increases with an increase in the agitation time and
becomes gradual after 5 min. As for example, about 91% adsorption
is observed within 5 min and there after extent of adsorption
becomes marginal for the initial dye concentrations of 10 mg/L. The
percentage adsorption is maximal at pH value of 7 and decreases
with acidic and or basic strength of the dye solution