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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
Removal of pharmaceutical and personal care products (PPCPs) under nitrifying and denitrifying conditions
Sonia Suarez1, Juan M Lema, Francisco Omil
1School of Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain. sonia.suarez@usc.es <sonia.suarez@usc.es>
Abstract:
The contribution of volatilization, sorption and transformation to the removal of 16 Pharmaceutical and Personal Care Products (PPCPs) in two lab-scale conventional activated sludge reactors, working under nitrifying (aerobic) and denitrifying (anoxic) conditions for more than 1.5 years, have been assessed. Pseudo-first order biological degradation rate constants (k(biol)) were calculated for the selected compounds in both reactors. Faster degradation kinetics were measured in the nitrifying reactor compared to the denitrifying system for the majority of PPCPs. Compounds could be classified according to their k(biol) into very highly (k(biol)>5Lg(SS)(-1)d(-1)), highly (1
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