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The influences of cerium dioxide nanoparticles (CeO2 NPs) on nitrogen removal in biofilm were investigated. Prolonged exposure (75d) to 0.1mg/L CeO2 NPs caused no inhibitory effects on nitrogen removal, while continuous addition of 10mg/L CeO2 NPs decreased the treatment efficiency to 53%. With the progressive concentration of CeO2 NPs addition, the removal efficiency could nearly stabilize at 67%...
The short term (8h) influences of cerium oxide nanoparticles (CeO2NPs) on the process of phosphorus removal in biofilm were investigated. At concentration of 0.1mg/L, CeO2 NPs posed no impacts on total phosphorus (TP) removal. While at 20mg/L, TP removal efficiency reduced from 85.16% to 59.62%. Results of P distribution analysis and 31P nuclear magnetic resonance spectroscopy implied that the anaerobic...
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