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. Author manuscript; available in PMC: 2020 Sep 15.
Published in final edited form as: Appl Energy. 2019 May 14;250:1011–1022. doi: 10.1016/j.apenergy.2019.05.108

Fig. 3.

Fig. 3.

(a) Degradation of ibuprofen by electro/Fe(II)/sulfite process in unbuffered or buffered solution, and (b) total dissolved iron concentration and pH at the end of reaction. Conditions: 10 μM ibuprofen, 0.1 mM Fe(II), 1 mM sulfite, 10 mM Na2SO4, 200 mA, with or without 50 mM Tris buffer, pH 7. Reaction for 30 min.