Cyclodextrin polymers as efficient adsorbents for removing toxic non-biodegradable pimavanserin from pharmaceutical wastewaters

Organic pollutants in water-soluble cavitands and capsules: contortions of molecules in nanospace

“…2,3 In this context, novel strategies based on supramolecular host-guest recognition have attracted increased attention in recent years. [4][5][6][7] Some supramolecular hosts that function in watercyclodextrins, [8][9][10][11][12] calixarenes, 13,14 calix [4]pyrroles 15 and pillararenes [16][17][18][19] have been used for scavenging organic micropollutants by attaching them to insoluble covalent polymer networks. These show promising results in terms of efficiency and binding selectivity.…”

Remediation of Emerging Contaminants

“…The small scale laboratory batch experiments with real municipal wastewater validated these results. It was recently published that carbonyldiimidazol-crosslinked β-cyclodextrin and γ-cyclodextrin polymer nanosponges efficiently removed the antipsychotic drug pimavanserin from single solutions (93% and 80% removal rates, respectively) and from postreaction raffinates in small scale batch experiments (0.1 g sorbent in 5 mL solution) (Hemine et al 2020).…”

“…The pilot-scale demonstration of the fluidization technology with the β-cyclodextrin polymer beads was successful, most of the pharmaceuticals as emerging contaminants, especially those on the European watch list, were efficiently removed in a short time. The beads are easily regenerated by extracting the sorbed components with methanol or ethanol (Orprecio and Evans 2003;Jurecska et al 2014;Fenyvesi et al 2020;Hemine et al 2020). The recovery of valuable drugs from industrial effluents is also conceivable after regeneration of the cyclodextrin polymer sorbent (Hemine et al 2020).…”

“…The beads are easily regenerated by extracting the sorbed components with methanol or ethanol (Orprecio and Evans 2003;Jurecska et al 2014;Fenyvesi et al 2020;Hemine et al 2020). The recovery of valuable drugs from industrial effluents is also conceivable after regeneration of the cyclodextrin polymer sorbent (Hemine et al 2020). For the full scale application of the cyclodextrin-based biosorbents in wastewater treatment the first step is the scaled up production of these polymers.…”

Chestnut shell‐like hollow spheres of C/Co3O4 nanoparticles as adsorbent for the removal of Congo red in wastewater

“…11,12 Commonly, there are mainly two ways to deal with these problems, including separate the pollutants from the liquid phase and in-situ catalytic degradation of pollutants in water. [13][14][15][16][17] Adsorption, ion exchange, coagulation and flocculation, membrane, oxidation technologies are considered efficient in the treatment of wastewaters. [18][19][20][21][22] Oxidize pollutants to degrade is ideal, but as a matter of fact, intermediates even of higher toxicity generated instead of CO 2 and H 2 O.…”