Table 1.
Summary of different advanced oxidation processes (AOPs) associated with target wastewater and compounds.
| Cluster | Color | AOP Treatments | Wastewater | Targets |
|---|---|---|---|---|
| 1 | Red | Ozone, ozone/UV, TiO2, | Hospital, olive mill, petroleum refinery | Pharmaceuticals, bacteria |
| 2 | Dark Green | Electrochemical, H2O2/UV, heterogeneous photocatalysis, TiO2 |
Textile industrial, paper industrial | Bisphenol a, formaldehydo, lignin, pharmaceuticals, pesticides, antibiotic resistant bacteria, endocrine disruptors |
| 3 | Dark Blue | Fenton | Coking, textile, paper industrial, oil refinery, winery | Endocrine disruptors, acetaminophen, colors, COD |
| 4 | Dark Yellow | Electro-Fenton, anodic oxidation, sonoelectrochemistry | Industrial textile, petrochemical | Organic pollutants, organic matter, dyes |
| 5 | Dark Purple | TiO2, Fenton, photo-Fenton, UV | Livestock, winery, textile | Persistent organic pollutants |
| 6 | Cyan | Electrolysis, Fenton, ozone, peroxy- and peroxymonodisulfate, UV/persulfate, UV/H2O2, UV/TiO2, zero-valent ion | Saline | COD, 1,4-dioxane, atrazine, dyes |
| 7 | Dark Orange | Electro-Fenton, Fenton, microwave, ozonization, UV radiation, wet air oxidation | Dyeing | Phenols, heavy metals |
| 8 | Brown | Cavitation, ionizing radiation | Oily | Emerging contaminants, azo dyes |
| 9 | Pink | H2O2, photo-Fenton, UV, | Slaughterhouse, urban | E. coli, pharmaceuticals, COD |
| 11 | Green | Ozonation, UV/Fenton | Municipal | Pharmaceuticals |
| 12 | Blue | H2O2, UV, UV/H2O2 | Textile | Pesticides, nitrate, nitrite, dyes |
| 13 | Yellow | Ultrasound, hydrodynamic cavitation, Fenton, photo-Fenton, TiO2 | Pharmaceutical | Paracetamol, phenol, |
| 14 | Purple | Fenton, sonolysis, ultrasonic radiation | Papermaking | Herbicides, organic pollutant, COD |
| 15 | Light Blue | Solar irradiation | Drinking, tannery | COD, dyes |
| 16 | Orange | Ozonation | Drinking, tannery | Phenol, COD |