Figure 2.

Effect of the Fe(II) to H₂O₂ molar ratio on the removal efficiency of estrogens from cow manure by the Fenton oxidation process. Note: the H₂O₂ dosage was 2.56 mmol/g; the solid to water mass ratio was 2 g/mL; the initial pH value was 3.0; the reaction time was 24 h. Error bars represent standard deviations.