Bioaugmentation of activated sludge with Achromobacter denitrificans PR1 for enhancing the biotransformation of sulfamethoxazole and its human conjugates in real wastewater: Kinetic tests and modelling

•Activated sludge bioaugmented with A. denitrificans PR1 enhanced SMX transformation.•Retransformation of human metabolites occurred under aerobic and anoxic conditions.•A. denitrificans PR1 metabolised wastewater carbon sources as co-substrates.•Co-metabolic models described well the biotransformation kinetics.