A comparative study of adsorption of perfluorooctane sulfonate (PFOS) onto granular activated carbon, ion-exchange polymers and non-ion-exchange polymers

Effect of effluent organic matter on the adsorption of perfluorinated compounds onto activated carbon

“…OchoaHerrera et al [5] reported that PFOS could be effectively removed by granular activated carbon (GAC). Senevirathna et al [12] compared a few adsorbents and found that GAC could effectively remove PFOS even at low concentrations (at ng/L equilibrium concentration). Yu et al [13] found that PAC possessed significantly higher adsorption rate and capacity for both PFOS and PFOA in comparison with GAC, which indicates that PAC could be a promising adsorbent for PFCs removal.…”

Effects of Anions on Perfluorohexanoic Acid Adsorption onto Anion Exchange Polymers, Non-ion Exchange Polymers and Granular Activated Carbon

“…n is the Freundlich exponent. The Freundlich equation is widely used to describe the adsorption capacity of many compounds onto heterogeneous surface, including activated carbon, hydrotalcite, anion exchange polymers and silica 12,17,18,22) . This model is based on the multilayer adsorption.…”

“…Thus, the developments of effective PFHxA removal techniques in industrial wastewater are needed. The physicochemical treatment processes including adsorption [11][12][13][14][15] , sonochemical treatment 16) and membrane filtration 17) have been studied to remove PFCs. Adsorption is revealed to be a promising technique to treat polluted wastewater due to its effectiveness and low cost.…”

“…Adsorption is revealed to be a promising technique to treat polluted wastewater due to its effectiveness and low cost. Activated carbon has been used to remove PFOS and PFOA in synthetic wastewater [12][13][14][15] . Recently, some researchers have reported that anion exchange polymers have higher adsorption capacity than activated carbon for both PFOS and PFOA 12,15) .…”

Characterization of a cetyltrimethyl ammonium bromide-modified sorbent for removal of perfluorooctane sulphonate from water

“…Conventional coagulation during drinking-water treatment removed only less than 20% of PFOS and PFOA (perfluorooctanoic acid). [15] Among these, sorption has been proved to be an effective and commercial approach for the PFOS removal in wastewater, and some adsorbents such as ion-exchange polymer, [16,17] activated carbon, [16][17][18][19][20] zeolite, [21] molecularly imprinted polymer adsorbents, [22] resins, [18,23,24] alumina, [25,26] clay, [27,28] activated sludge, [19,29] carbon nanotube [30][31][32] and aminated rice husk [33] have been studied for the sorption performance of PFOS from aqueous solution. Among these adsorbents, porous materials normally have high sorption capacity for PFOS, but the sorption velocity is generally slow, while non-porous materials usually possess fast sorption but low sorption capacity.…”