title: A mechanistic model for anaerobic phototrophs in domestic wastewater applications: Photo-anaerobic model (PAnM).
abstract: Purple phototrophic bacteria (PPB) have been recently proposed as a key potential mechanism for accumulative biotechnologies for wastewater treatment with total nutrient recovery, low greenhouse gas emissions, and a neutral to positive energy balance. Purple phototrophic bacteria have a complex metabolism which can be regulated for process control and optimization. Since microbial processes governing PPB metabolism differ from traditional processes used for wastewater treatment (e.g., aerobic and anaerobic functional groups in ASM and ADM1), a model basis has to be developed to be used as a framework for further detailed modelling under specific situations. This work presents a mixed population phototrophic model for domestic wastewater treatment in anaerobic conditions. The model includes photoheterotrophy, which is divided into acetate consumption and other organics consumption, chemoheterotrophy (including simplified fermentation and anaerobic oxidation) and photoautotrophy (using hydrogen as an electron donor), as microbial processes, as well as hydrolysis and biomass decay as biochemical processes, and is single-biomass based. The main processes have been evaluated through targeted batch experiments, and the key kinetic and stoichiometric parameters have been determined. The process was assessed by analyzing a continuous reactor simulation scenario within a long-term wastewater treatment system in a photo-anaerobic membrane bioreactor.
authors.affiliation: Advanced Water Management Centre, Gehrmann Building, The University of Queensland, Brisbane, Queensland 4072, Australia; CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria, 3800, Australia; Group of Chemical and Environmental Engineering (GIQA), University Rey Juan Carlos, 28933 Mostoles, Madrid, Spain. Electronic address: daniel.puyol@urjc.es.
authors.forename: D
authors.initials: D
authors.lastname: Puyol
authors.affiliation: Advanced Water Management Centre, Gehrmann Building, The University of Queensland, Brisbane, Queensland 4072, Australia; CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria, 3800, Australia.
authors.forename: E M
authors.initials: EM
authors.lastname: Barry
authors.affiliation: Advanced Water Management Centre, Gehrmann Building, The University of Queensland, Brisbane, Queensland 4072, Australia; CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria, 3800, Australia.
authors.forename: T
authors.initials: T
authors.lastname: Hülsen
authors.affiliation: Advanced Water Management Centre, Gehrmann Building, The University of Queensland, Brisbane, Queensland 4072, Australia; CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria, 3800, Australia.
authors.forename: D J
authors.initials: DJ
authors.lastname: Batstone
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001421:Bacteria, Anaerobic / Q000378:metabolism; D018533:Biomass; D019149:Bioreactors; D006859:Hydrogen / Q000378:metabolism; D008962:Models, Theoretical; D062065:Wastewater
chemical_list: D006859:Hydrogen; D062065:Wastewater
keywords: Mechanistic modelling; Partition-release-recovery; Phototrophic bacteria; Resource recovery