Percentage adsorbed was observed
to increase as the adsorbent dosage increased
and equilibrium was attained after adsorbent dosage
of 2 g/L (Fig. 6).
Percentage adsorbed increased from 85.19% for adsorbent dosage of 1 g/L to 88.88% for adsorbent dosage of 2 g/L.
Increase in percentage adsorbed with increase in adsorbent dosage between 1 g/L and 2 g/L may
be as a result of increase in the available adsorption sites.
Only about 3% increase was observed as adsorbent dosage was increased from 1 g/L to 2 g/L, overlap of adsorption sites may account for the small increase in percentage adsorption.
However, saturation viz-à-viz aggregation on adsorption site results into equilibrium after 2 g/L dosage (Fig. 7).