It was observed that removal efficiencies were reaches to the optimum value when the equilibrium between adsorbate
and adsorbent was established [36, 37].
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.
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.
The rate of adsorption and the mechanism of adsorbate
--adsorbent interaction depends on the ionic nature of adsorbate
and adsorbent surfaces.
HC] is the partial pressure of the adsorbate
at the gas-solid interface.
The results corroborate the kinetic model of pseudo-second order, indicating a strong interaction between the adsorbent and the adsorbate
It can be explained with the fact that the area of an adsorbate
molecule (in this work--the average area of the main SAS of a tarry phase of phenolic waters accepted to be equal to 85 [nm.
Pseudo-second It is based on the assumption that order the adsorbate
is adsorbed onto two active sites in the biomass.
2) The Langmuir isotherm model is applicable to homogeneous adsorption where the adsorption of each adsorbate
molecule on to the surface has equal sorption activation energy.
In the first step, adsorbate
moves through the solution to reach external surface of adsorbent by molecular diffusion (film or external diffusion).
Berg, <<Effect of silane coupling agent adsorbate
structure on adhesion performance with a polymeric matrix,>> Composites Part A: Applied Science and Manufacturing, vol.
Adsorbents work by creating a layer of adsorbate
on the surface through adhesion.
The present work attempts to: (i) enhance the surface area of the pyrolysed Napier grass biochar by KOH activation; (ii) investigate the effect of contact time and initial concentration of adsorbate
on urea uptake capacity; (iii) yze the adsorption equilibrium and kinetics; (iv) characterize the activated carbon developed from the Napier grass biochar; (v) study the effect of urea adsorbed KOH activated Napier grass biochar on selected plant growth parameters of wheat (Triticum aestivum L.
The dosage of adsorbent is an important parameter in the sorption studies because it provides the capacity of an adsorbent for a given initial concentration of the adsorbate
t] (mg/g) are the amount of adsorbate
adsorbed at the time of equilibrium and at the time t, respectively.