Adsorption properties of a microporous and mesoporous hyper-crosslinked polymeric adsorbent functionalized with phenoxy groups for phenol in aqueous solution

Equilibria and kinetics of phenol adsorption on a toluene-modified hyper-cross-linked poly(styrene-co-divinylbenzene) resin

“…4. The adsorption of phenol onto the three resins has the same trend as the dissociation curve of phenol, implying that the molecular form of phenol is favorable for the adsorption [30]. Phenol is a weak acid and can be ionized in aqueous solution.…”

“…It is observed that Freundlich models can characterize the adsorption onto HJ-L15, XAD-4 and X-5, implying that the adsorption of phenol onto the three resins should be a multilayer process and the resins hold surface energetic heterogeneity [3,30]. As compared the K F and n of the three resins, K F(HJ-L15) > K F(XAD-4) > K F(X-5) and n (HJ-L15) > n (XAD-4) > n (X-5) , revealing that the interaction between HJ-L15 and phenol is the greatest and the adsorption of phenol onto HJ-L15 is the most favorable.…”

“…In common, the intra-particle diffusion is the rate-limiting step for the adsorption of aromatic compounds onto hyper-cross-linked resin from aqueous solution [30]. Therefore, the kinetic data are further dealt with by the intra-particle diffusion model as [38,39]:…”

A novel polymeric adsorbent by a self-doped manner: synthesis, characterization, and adsorption performance to phenol from aqueous solution

“…What is more, if heat of an adsorption process is \40 kJ mol -1 , it is a physical process [40]. Therefore, DH values of phenol confirm the adsorption is a physical process [41]. Gibbs free energy (DG) and entropy change (DS) can be calculated from Eqs.…”

Synthesis, characterization and adsorption performance of a novel post-crosslinked adsorbent

“…Porous materials such as activated carbon and polymeric adsorbents are widely used in water and wastewater treatment for the removal of organic and inorganic contaminants because of its large specific surface area and predominant proportion of micropores [9,10]. In the past few decades, due to its better mechanical strength and feasible regeneration under mild conditions, polymeric adsorbents have increasingly been used for efficient removal of specific organic compounds from wastewater [11,12].…”