title: Biomass viability: An experimental study and the development of an empirical mathematical model for submerged membrane bioreactor.
abstract: This study investigates the influence of key biomass parameters on specific oxygen uptake rate (SOUR) in a sponge submerged membrane bioreactor (SSMBR) to develop mathematical models of biomass viability. Extra-cellular polymeric substances (EPS) were considered as a lumped parameter of bound EPS (bEPS) and soluble microbial products (SMP). Statistical analyses of experimental results indicate that the bEPS, SMP, mixed liquor suspended solids and volatile suspended solids (MLSS and MLVSS) have functional relationships with SOUR and their relative influence on SOUR was in the order of EPS>bEPS>SMP>MLVSS/MLSS. Based on correlations among biomass parameters and SOUR, two independent empirical models of biomass viability were developed. The models were validated using results of the SSMBR. However, further validation of the models for different operating conditions is suggested.
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
authors.forename: M F R
authors.initials: MF
authors.lastname: Zuthi
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia. Electronic address: h.ngo@uts.edu.au.
authors.forename: H H
authors.initials: HH
authors.lastname: Ngo
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
authors.forename: W S
authors.initials: WS
authors.lastname: Guo
authors.affiliation: Strategic Water Infrastructure Laboratory, School of Civil Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
authors.forename: L D
authors.initials: LD
authors.lastname: Nghiem
authors.affiliation: Strategic Water Infrastructure Laboratory, School of Civil Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
authors.forename: F I
authors.initials: FI
authors.lastname: Hai
authors.affiliation: College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
authors.forename: S Q
authors.initials: SQ
authors.lastname: Xia
authors.affiliation: College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, PR China.
authors.forename: J X
authors.initials: JX
authors.lastname: Li
mesh_terms: D018407:Bacterial Physiological Phenomena; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D049109:Cell Proliferation / Q000502:physiology; D002470:Cell Survival / Q000502:physiology*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008567:Membranes, Artificial; D008954:Models, Biological; D015233:Models, Statistical; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption / Q000502:physiology
chemical_list: D008567:Membranes, Artificial; D010100:Oxygen
keywords: Biomass viability; Bound extracellular polymeric substances; Membrane bioreactor; Soluble microbial products; Specific oxygen uptake rate