Adsorption of dyes and phenol from water on resin adsorbents: Effect of adsorbate size and pore size distribution

Effect of micropore size distribution on phenol adsorption on steam activated carbons

“…Although in liquid phase adsorption of low molecular weight compounds the overlapping adsorption potentials of opposite walls make the adsorption much stronger in smaller micropore. However in ultramicropores the molecular sieving effect may occur or due to the shape of pores that does not allow the molecules to penetrate into micropores or because the pore width is narrower than the molecular size of the adsorbate (Zhang et al 2006). Also the presence of some functional group in the microporosity might cause the pore blocking effect and force the phenol molecule to adsorb only in pores with size greater than the size of phenol molecule.…”

Adsorption isotherm, kinetic and mechanism studies of some substituted phenols on activated carbon fibers

“…The characteristics of the activated carbon such as surface area, pore size distribution and surface functional groups play an important role in the adsorption, as they determine the interactions between the organics and the activated carbon at the interface [14,15]. The effects of the molecular properties such as molecular size, solubility, pK a and electron distribution have been revealed, which might influence the affinity between the organics and the carbon surface [16][17][18]. Furthermore, the operational conditions such as solution pH and temperature are also involved in the adsorption, which might have implications on the adsorbent/adsorbate interactions [19,20].…”

Separation of phenolic compounds with modified adsorption resin from aqueous phase products of hydrothermal liquefaction of rice straw

“…The greater K F values of modified resin (Table 3) implying a larger adsorption capacity than XAD-4. The BET specific surface area and pore structure of the adsorbent have been shown to be the main factors that affect the adsorption of small organic compounds on polymeric adsorbents from aqueous solution (Aoshima et al, 2000;Zhang et al, 2006). The increase of surface area, pore volume and micropore volume influence the adsorption of small molecular substances, which enhance the adsorption capacity of phenolic compounds.…”