https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Enhanced degradation of total petroleum hydrocarbons in real soil by dual-frequency ultrasound-activated persulfate https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47136 4 and .OH in DFUS/PS is ~1.6 times and ~2.5 times as much, respectively, as in high frequency US/PS. The relative contributions to the synergistic TPH degradation in the DFUS/PS system are: SO.4 (PS activation via the heat induced by US) > pyrolysis inside the bubbles (hydrophobicity of TPH) > SO.4 (PS activation via US cavitation) > .OH. Finally, the hypothesis is confirmed via the evaluation of the degradation kinetics, which shows that the combined process of DFUS/PS is not a simple addition of the US and PS, but provides a highly effective process of synergistic degradation.]]> Wed 14 Dec 2022 15:20:32 AEDT ]]> Experimental and numerical investigation on the effect of frequency combinations on PFOA defluorination by dual-frequency ultrasound coupling persulfate https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55019 Wed 03 Apr 2024 13:23:06 AEDT ]]> Synergistic degradation of PFAS in water and soil by dual-frequency ultrasonic activated persulfate https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39335 6:2 FTS (86.9 ± 0.9%) > PFOS (46.5 ± 1.0%). Interestingly, the dual-frequency US/PS process can also efficiently degrade PFAS in the contaminated soil, with a 62–71% degradation of 14 PFAS (28 is the maximum number of PFAS that can be quantitatively monitored), representing an encouraging progress. Finally, the degradation pathways and kinetics of PFOA are studied by monitoring the degradation intermediates, and by indicating the combination of the dual-frequency US/PS is not simply addition with each other, but with a synergistic effect of degradation.]]> Fri 03 Jun 2022 17:06:23 AEST ]]>