Background and challenges

Organic matter fractionation techniques of liquid waste for the modeling of bioprocesses

Figure 1 - Diagram of organic matter transformations in a biological process according to the ASM 1 model

Figure 2 - Compartments characterizing effluent organic matter for ASM 1 (activated sludge model n° 1)

Figure 3 - Diagram of the main physico-chemical fractions

Figure 4 - Main methodologies used for dissolved/particulate phase separation

Figure 5 - Fractionation methods as a function of experimental duration (abscissa) and substrate/biomass ratio (ordinate)

Figure 6 - BOD test applied to urban wastewater –  kBOD &#61; 0.34 j-1

Figure 7 - Diagram of a continuously aerated reactor. Intermediate flask to limit evaporation in the reactor studied [11].

Figure 8 - Schematic diagram of the exploitation of organic matter consumption results [ρ &#61; 0.145 by default] between t0 and tf [11]

Figure 9 - Illustration of the liquid respirometry method [18].

Figure 11 - Respirogram recorded after injection of AGV into slurry. Simulations with and without storage process

Figure 12 - Elements for choosing an organic matter fractionation technique based on the model used and the processes studied

Figure 14 - Methodologies for measuring anaerobic biodegradability

Figure 15 - Respirometric device and examples of curves obtained with various solid organic wastes