| AOP | Operating Conditions | Target EDCs | Work Highlights | Reference |
|---|---|---|---|---|
| Dark/Photo-Fenton | H2O2: 50 mg/L, Fe2+ 5 mg/L and absence of light; H2O2: 10-50 mg/L, Fe2+ 0-5 mg/L UV-C/solar light. |
Mix of 25 pharmaceuticals, 2 corrosion inhibitors and 5 pesticides at real concentration in wastewaters (COD: 0-150 mg/L) |
DOM presence enhanced Fe(III) photo-Fenton yields; UV-C degradation efficiency higher than sunlight one. |
[76] |
| Photo-Fenton | 9 W UV lamp Ferrous sulfate and H2O2 at appropriate concentrations |
Perfluorooctanoic acid (20 mmol/L) |
Rapid degradation within 1 h (87.9% removal); Afterwards, H2O2 was consumed and reactions mainly occurred due to Fe3+ ions. |
[80] |
| Fenton | H2O2/ Fe (III): 10; pH. 3; Various Fe concentrations |
17²-estradiol, 17α -ethinylestradiol | Removal efficiencies of 95% and 98% at ferric concentration of 58.6 mg/L were obtained. |
[81] |
| Fenton | H2O2/Fe(II) molar ratio:7; Fe(II):0.05 (ph=2) - 0.06 (pH=3.0) mol/L |
Phthalic acid esters and bisphenol A (0.08-1.5 mg/L) |
Removal efficiencies up to 88%- increased performances for higher EDC concentrations. | [82] |
| Photo-Fenton | H2O2: 20-50 mg/L; Fe3+: 0-4 mg/L UV-C (70 W/m2) |
Mix of 22 EDCs, including pharmaceuticals, corrosion inhibitors and pesticides | When Fe (III) was added, almost no dissolved fraction could be measured, so homogeneous photo-Fenton was probably not occurring. |
[83] |
| Fenton | Different molar ratio H2O2/Fe(II) pH: 3 |
PPCPs (each present as 1 mg/L) |
20 mg/L Fe(II) allowed complete removal of all PCPPs, except atrazine and iopromide. | [84] |
| Photo-Fenton | Different Fe and H2O2 concentrations; UV-C: 254 nm, UV-A: 350 nm, vis: 420 nm. |
BPA (50 mg/L) |
Complete degradation after 2-3 min treatment, despite irradiation source. Toxicity disappearance along with BPA removal. |
[85] |
| Fenton | Fe2+/H2O2 molar ratio: 0.012 to 0.100; pH: 3 |
BPA (13- 300 mg/L) |
Complete BPA degradation and significant DOC and TOC conversion. | [86] |
| Photo-Fenton | H2O2: 5 mg/L; Fe(II): 50 mg/L; Solar light |
Mix of 15 EDCs, including pharmaceuticals, corrosion inhibitors and pesticides (100 mg/L) | Significant degradation within 4-5 hours. | [4] |
| Photo-Fenton | H2O2: 5 mg/L; Fe(II): 50 mg/L; pH: 3, 7.6-8.3 |
Mix of 62 EDC present in real wastewater (3 ng/L to 66.379 ng/L) |
Complexing agents have to be used to keep the iron in solution. EDDS is a suitable agent. |
[87] |
| US/Photo-Fenton | US: 400 kHz, 0.3 W/mL; UV: 254 nm; Fe2+: 0.1 mM |
Di-n-butyl phthalate (0.01 mM) |
Complete degradation of the target compound in 75 min. More efficient use of Fe2+ in comparison to conventional Fenton |
[88] |