where [q.sub.e] (mg/g) is the amount of dye adsorbed per unit mass of
adsorbate at equilibrium, [C.sub.e] is the concentration of the
adsorbate left in the solution (mg/L), [K.sub.f] is the adsorption capacity at unit concentration, and 1/n is the adsorption intensity.
In Table 3 the value coefficient ([R.sup.2]) for adsorption isotherms for MB and phenol were best fit for the Freundlich model, which enables multilayer
adsorbate adsorption with weak interactions between
adsorbate and adsorbent.
Removal efficiency (%) started decreasing after 293.0 K because at high temperature motion of MB molecules increased and contact time between adsorbent and
adsorbate decreased.
The quantity of
adsorbate adsorbed in the equilibrium state, ([q.sub.e], mg.[g.sup.-1]) and the dye removal efficiency (De, %) were determined using Equations (2) and (3), respectively.
With respect to a lower influent As(V) concentration, the inflow
adsorbate molecules were adequate to the active sites on the surface of the adsorbent.
The high affinity of the
adsorbate to adsorption sites (physical adsorption or ion exchange) was associated with the higher sorption rate at initial times [34].
where [q.sub.e] and [C.sub.e] represent the adsorption capacity (mg/g) of the adsorbent and the concentration of
adsorbates (mg/L) at equilibrium, respectively.
(2014) observed optimum removal efficiency of reactive blue 114 dye at 90 min of contact between
adsorbate and adsorbent (pomelo peel) and Irem et al.
As relative humidity goes up, the material goes from single-layer
adsorbate transport to multiple-layer
adsorbate transport to internal capillary condensation to free water capillary suction and, finally, to supersaturated flow.
The rate of adsorption and the mechanism of adsorbate--adsorbent interaction depends on the ionic nature of
adsorbate and adsorbent surfaces.
Adsorption capacity of methylene blue (dye) and 4-chlorophenol were determined as function of
adsorbate initial concentration and adsorbent dosage.
