Table 2.

Effect of H₂O₂ dosage on the residual concentrations of estrogens in cow manure by the Fenton oxidation process. Note: the Fe(II) to H₂O₂ molar ratio was 0.10 M/M; the solid to water mass ratio was 2 g/mL; the initial pH value was 3.0; the reaction time was 24 h.

H2O2 Dosage/(mmol/g)	The Residual Concentrations of Estrogens in Cow Manure (mg/kg)
	E3	BPA	DES	E2	EE2
0	97.40 ± 3.55	96.54 ± 0.42	100.22 ± 0.35	95.01 ± 1.01	72.49 ± 1.55
1.11	52.43 ± 1.60	1.21 ± 0.04	3.83 ± 0.13	9.96 ± 0.23	42.41 ± 2.76
1.57	43.28 ± 0.68	0.98 ± 0.03	2.81 ± 0.15	4.22 ± 0.07	26.54 ± 1.29
2.07	34.39 ± 2.16	0.58 ± 0.01	1.62 ± 0.18	3.06 ± 0.34	15.24 ± 1.81
2.56	15.92 ± 1.43	0.29 ± 0.03	0.48 ± 0.01	2.14 ± 0.44	12.11 ± 1.77
3.07	21.39 ± 3.77	0.57 ± 0.12	1.83 ± 0.08	3.03 ± 0.08	13.34 ± 1.55
3.59	29.35 ± 4.16	0.70 ± 0.04	2.36 ± 0.13	3.22 ± 0.21	14.60 ± 0.80