Antibiotics

Photodecomposition Process

Ci (mg∙L−1)

Matrix

Process

Process Parameters

Results

Amoxicillin

42

WWTP Effluent

Photo-Fenton

Solar radiation at 365 nm, 1.0 - 2.0 mM H2O2 0.20 mM Iron oxalate or Fe(NO3)3

pH = 2.5

Total degradation obtained after 10 min of irradiation

Amoxicillin

1 to 100

Distilled water

Heterogeneous photocatalysis

pH = 3 - 9, and solar radiation at 365 nm 0.1 - 0.7 g∙L−1 TiO2 or TiO2 doped with C and Fe

Maximum degradation was obtained at neutral pH and with TiO2 doped with 37% of C (85% removal).

Lincomycin

25

Distilled and residual water

Foto-Fenton

Radiação solar (λmax = 365 nm) pH = 2.5 0.20 mM Ferric oxalate, FeSO4, Fe(NO3)3

1.0 - 10 mM H2O2

After 8 min of irradiation, complete removal with oxalate. After 20 min total removal with Fe (NO3)3

Tetracycline

24

WWTP, river water and deionized water

Foto-Fenton

UV light and sunlight (15 W) 1 - 10 mM H2O2 0.20 mM ferric oxalate or Fe (NO3)3 at pH = 2.5

Total degradation after 1 min, the artificial light favored by the use of Fe(NO3)3, the sunlight by ferric oxalate

Tetracycline

40

Deionized water

Heterogeneous photocatalysis

Heterogeneous photocatalysis at 254 nm and sunlight at 365, 300 - 400 nm

Degradation by radiation TiO2 and after 120 min with UV 254 nm: 100% degradation, 90% mineralization, simulated sunlight: 100% degradation, 70% mineralization, at 365 nm

Sulfamethoxazole

10

Distilled water,

and Seawater

Photolysis

Artificial UV Solar radiation

(λ < 290 nm)

The degradation of 98% of antibiotic presence was in distilled water after 30 h of irradiation.