A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems

• DOI: 10.4314/wsa.v28i4.4920
• Publication Date: 2011-11-30T04:57:23Z
• Authors: Edgardo M Contreras; Nora C Bertola; Leda Giannuzzi; Noemi E Zaritzky
• Keywords: Filtration (mathematics); Volatile suspended solids

A simple technique to determine biomass concentration as chemical oxygen demand (COD) was developed an alternative the standard volatile suspended solid (VSS) method. The proposed for measurement COD is based on determination of (CODB) difference between total (CODT) and soluble (CODS) sample. obtained results show that this quicker simpler than traditional VSS validity methods tested with pure cultures a filamentous micro-organisms (Sphaerotilus natans), floc-forming bacteria activated sludges. method also used estimating conversion factor (fCV) from units. modification using two membranes in filtration device; allowed 1 ?m size cannot be detected by because cells are not retained 1.5 mm diameter pore glass-fibre filter. WaterSA Vol.28(4) 2002: 463-468