Marine anammox bacteria-driven nitrogen removal from saline wastewater under different vanadium (v) doses: Evaluation on performance and kinetics

•This study investigated MAB-mediated nitrogen removal using vanadium (V(V)).•Nitrogen removal performance of MAB was enhanced at 0.25–20 mg/L V(V).•MAB used V(V) to instead of partial NO2− as electron acceptor, viz. Vammox.•High substrate conversion rate was maintained for longer period at ≤ 10 mg/L V(V).•The remodified Logistic model was the most suitable model at 0.25–20 mg/L V(V).