Greenhouse gases from membrane bioreactors: Mathematical modelling, sensitivity and uncertainty analysis

Giorgio Mannina, Alida Cosenza, George A. Ekama

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

In this study a new mathematical model to quantify greenhouse gas emissions (namely, carbon dioxide and nitrous oxide) from membrane bioreactors (MBRs) is presented. The model has been adopted to predict the key processes of a pilot plant with pre-denitrification MBR scheme, filled with domestic and saline wastewater. The model was calibrated by adopting an advanced protocol based on an extensive dataset. In terms of nitrous oxide, the results show that an important role is played by the half saturation coefficients related to nitrogen removal processes and the model factors affecting the oxygen transfer rate in the aerobic and MBR tanks. Uncertainty analysis showed that for the gaseous model outputs 88â93% of the measured data lays inside the confidence bands showing an accurate model prediction.
Original languageEnglish
Pages (from-to)353-367
Number of pages15
JournalBioresource Technology
Volume239
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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