Environmental Engineering Reference
Fig. 4 Influence of adsorbent amount on adsorption of fluoride ( top ) and arsenite ( bottom )
correspondingly, the number of such sites per unit mass comes down, resulting in
comparatively less adsorption at higher adsorbent amount, and (ii) higher adsorbent
amount creates particle aggregation, resulting in a decrease in the total surface area
and an increase in diffusional path length, both of which contribute to a decrease in
amount adsorbed per unit mass (Yu et al. 2000 ).