A review on methanogenic-denitrification reactors for the removal of recalcitrant and toxic pollutants - Reyna-Velarde, Rodolfo; Zárate-Segura, Paola; Ahring, Birgitte K.; Rinderknecht-Seijas, Noemi; Sanz, José L.; Foresti, Eugenio; Zaiat, Marcelo; Poggi-Varaldo, Héctor M. (International Meeting on Environmental Biotechnology and Engineering, 2004)