Economic and Environmental Geology

Fig. 5.

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Fig. 5. TOC removal efficiency of air-stripping and ultrasonic treatment (a: initial TOC concentration 593.2 mg/L; b, c and d: initial concentration of 153.3 mg/L) at 60℃.
Econ. Environ. Geol. 2022;55:511-9 https://doi.org/10.9719/EEG.2022.55.5.511
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