Degradation of piperazine by Paracoccus sp. TOH isolated from activated sludge

► A novel bacterium was isolated from activated sludge for piperazine biodegradation. ► The optimal pH and temperature for degradation were 8.0 and 30 °C, respectively. ► Glucose as co-substrate plays a role in enhancement of degradation. ► The metabolic pathway for piperazine was proposed by the first time.