Enhanced removal of sulfur-containing ions post persulfate advanced oxidation: Interfacial adsorption-mediated foam fractionation process by amphiphilic graphene oxide

The efficient elimination of sulfur-containing ions (S₂O₈^2- and SO₄^2-) from degraded wastewater remains a critical bottleneck for the practical deployment of Persulfate-based Advanced Oxidation Processes. To address this challenge, a nanoscale amphiphilic graphene oxide functionalized with N-dodecylamine (GO-DDA) was designed as foam fractionation agent. By establishing a solid-liquid interfacial adsorption process, GO-DDA enhances the removal …