The calibrated model was then validated to ascertain if it could provide reliable predictions for another dataset as well. The accuracy of model predictions was assessed by computing the root mean squared error (RMSE, Equation S2) for each of microalgae biomass, effluent orthophosphate, and 1-day moving average of biomass yield (g biomass produced•g phosphorus removed -1 , Equation S3), which are the key performance indicators of the EcoRecover process.