Combining Thermophilic Aerobic Reactor (TAR) with Mesophilic Anaerobic digestion (MAD) improves the degradation of pharmaceutical compounds
Résumé
The removal efficiency of nine pharmaceutical compounds in conventional Mesophilic Anaerobic Digestion (MAD) was compared with Mesophilic Anaerobic Digestion combined with a Thermophilic Aerobic Reactor (MAD-TAR). The semi-industrial scale reactors were fed with primary sludge obtained after decantation of urban wastewater. The highest removal rate of target micropollutants were reported for caffeine (CAF) and sulfamethoxazole (SMX) (>89%) with no significant differences between both processes. MAD-TAR process showed a significant increase of removal efficiency for oxazepam (OXA) (73%), propranolol (PRO) (61%) and OFL (41%) and slightly for diclofenac (DIC) (4%) and 2 hydroxy-ibuprofen (2OH-IBP) (5%). However, ibuprofen (IBP) and carbamazepine (CBZ) were not degraded during both processes.
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