TY - JOUR
T1 - Removal of Ketoprofen from Water by Sono-Activated Persulfate Oxidation
AU - Liu, Yu Jung
AU - He, Boyu
AU - Hu, Ching Yao
AU - Lo, Shang Lien
PY - 2020/7/1
Y1 - 2020/7/1
N2 - In this study, we evaluated the feasibility of treating water contaminated with ketoprofen (KET) by ultrasound (US) and sono-activated persulfate (US/PS) systems. The effects of different reaction parameters, such as the initial pharmaceutical compound concentration (C0), persulfate concentration, ultrasonic power, and initial pH of the solution (pHi) on the KET removal and reaction kinetics were investigated. Tert-butyl alcohol (TBA) was used as a chemical probe to identify the predominant radicals in the US and US/PS systems. The results demonstrated that the persulfate oxidant can be activated by US under neutral and alkaline conditions. Moreover, KET was predominantly degraded by hydroxyl radicals (HO.) generated by the activation of persulfate. Under alkaline conditions, the removal efficiency of KET improved with increasing amount of persulfate added. HO. was the dominant radical at a more alkaline pH in both US and US/PS systems, which was verified by the tert-butyl alcohol probe. These results provide insights into the treatment of water contaminated with pharmaceutical compounds.
AB - In this study, we evaluated the feasibility of treating water contaminated with ketoprofen (KET) by ultrasound (US) and sono-activated persulfate (US/PS) systems. The effects of different reaction parameters, such as the initial pharmaceutical compound concentration (C0), persulfate concentration, ultrasonic power, and initial pH of the solution (pHi) on the KET removal and reaction kinetics were investigated. Tert-butyl alcohol (TBA) was used as a chemical probe to identify the predominant radicals in the US and US/PS systems. The results demonstrated that the persulfate oxidant can be activated by US under neutral and alkaline conditions. Moreover, KET was predominantly degraded by hydroxyl radicals (HO.) generated by the activation of persulfate. Under alkaline conditions, the removal efficiency of KET improved with increasing amount of persulfate added. HO. was the dominant radical at a more alkaline pH in both US and US/PS systems, which was verified by the tert-butyl alcohol probe. These results provide insights into the treatment of water contaminated with pharmaceutical compounds.
KW - Chemical probe
KW - Hydroxyl radical
KW - Ketoprofen
KW - Persulfate
KW - Sono-activated persulfate oxidation
KW - Ultrasound
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U2 - 10.1007/s11270-020-04719-3
DO - 10.1007/s11270-020-04719-3
M3 - Article
AN - SCOPUS:85087286709
SN - 0049-6979
VL - 231
JO - Water, Air, and Soil Pollution
JF - Water, Air, and Soil Pollution
IS - 7
M1 - 353
ER -
