Research Article
Photocatalytic Degradation of Pesticides in Natural Water: Effect of Hydrogen Peroxide
Table 7
% Removal of pesticides by photocatalytic treatments.
| Group | Pesticide | Removal after TiO2/radiation (%) | Removal after TiO2/H2O2/radiation (%) |
| Triazines | Simazine | 45 | 50 | Atrazine | 35 | 40 | Propazine | 35 | 40 | Terbuthylazine | 50 | 50 | Prometon | 45 | 45 | Ametryn | 55 | 55 | Prometryn | 55 | 55 | Terbutryn | 55 | 60 | Desethylatrazine | 35 | 40 |
| Organic phosphorated | Parathion methyl | 90 | 90 | Parathion ethyl | 55 | 55 | Chlorpyrifos | 80 | 80 | Chlorfenvinfos | 40 | 55 | Dimethoate | 55 | 60 |
| HCHs | α-HCH | 20 | 20 | β-HCH | 15 | 15 | χ-HCH | 15 | 20 | δ-HCH | 15 | 15 |
| HCB | Hexachlorobenzene | 35 | 35 |
| Heptachlors | Heptachlor | 50 | 50 | Heptachlor epoxide A | 30 | 30 | Heptachlor epoxide B | 30 | 30 |
| Endosulphans | α-Endosulphan | 90 | 100 | Endosulphan-sulphate | 5 | 10 |
| Drins | Endrin | 50 | 50 | Dieldrin | 30 | 30 | Isodrin | 60 | 100 | Aldrin | 55 | 95 |
| DDTs | pp′-DDE | 40 | 70 | pp′-DDD + op′-DDT | 35 | 80 | pp′-DDT | 20 | 70 |
| Anilines | 3,4-Dichloroaniline | 100 | 100 | 4-Isopropylaniline | 100 | 100 |
| Ureas | Isoproturon | 85 | 85 | Diuron | 75 | 75 |
| Carbamate | Molinate | 55 | 70 |
| Nitroderivate | Trifluralin | 55 | 70 |
| Anilides | Alachlor | 50 | 65 | Metholachlor | 50 | 60 | Methoxychlor | 55 | 75 |
| Chlorophenols | Tetradiphon | 40 | 40 | Dicofol | 90 | 90 |
| Chlorinated diphenyl | 4,4′-Dichlrobenzophenone | 5 | 30 |
| Average | 48 | 57 |
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