Digester model, anaerobic

Figure 2. Inputs, outputs, and reactions for anaerobic digester model...

The typical steps usually included in an anaerobic digestion model are ... 

Barrera, E.L., Spanjers, H., Solon, K., Amerlinck, Y., Nopens, I., Dewulf, J., 2015. Modeling the anaerobic digestion of cane-molasses vinasse extension of the Anaerobic Digestion Model No. 1 (ADMl) with sulfate reduction for a very high strength and sulfate rich wastewater. Water Research 71, 42—54. 

Batstone, D., Keller, J., 2003. Industrial applications of the IWA anaerobic digestion model no. 1 (ADMl). Water Science and Technology 47 (12), 199—206. 

Larsen T, Luxhoi J, Magid J, Jensen LS, Krogh PH (2007) Properties of anaerobically digested and composted municipal solid waste assessed by linking soil mesofauna dynamics and nitrogen modeling. Biol Fertil Soils 44 59-68... 

In the following, a model of an anaerobic digestion process carried out in a continuous fixed bed reactor for the treatment of industrial wine distillery vinasses is considered [10] ... 

In this work, the AD model proposed and validated by Bernard et ah, 2001 is used in the development of the robust nonlinear scheme. The use of this model is justified by two facts i) this model has demonstrated to be useful in the monitoring and control of AD processes and, ii) the semi-industrial fixed-bed anaerobic digester located in the LBEhlNRA used in the validation and identification of the model will be also used in the experimental implementation of the robust nonlinear approach here proposed. Therefore, in what follows the model is briefly described. 

G. Kiely, G. Tayfur, C. Dolan, and K. Tanji. Physical and mathematical modelling of anaerobic digestion of organic wastes. Wat. Res., 31 534-540, 1997. 

F. Mosey. Mathematical modeling of the anaerobic digestion process Regulatory mechanisms for the formation of short-chain volatile acids from glucose. Wat. Sci. TechnoL, 15 209-232, 1983. 

Anaerobic digester can be controlled by a feedback control law. The main control objective is to regulate the substrate (COD) concentration X4 at any desired value 0 [15]. Indeed, even in face to modeling errors, a control law can be obtained for substrate regulation [35]. Following the ideas reported in [21], since the substrate (COD) concentration X4 is measured, the dilution rate can be computed by [33], [34]... 

D. Ramkrishna Statistical Models of Cell Populations. - Sh. Nagai Mass and Energy Balances for Microbial Growth Kinetics. -M.Moo-Young J. M. Scharer Methane Generation by Anaerobic Digestion of Cellulose-Containing Wastes. - B.Metz, N. W.F.Kossen,... 

The feed material essentially consists of organisms with the concentration Cxs measured in mol/m3 and of substrate with the concentration Csf in mol/m3. This is fed to the anaerobic digester at a daily volumetric feed flow rate of q to3/day. The development of the model design equations involves the following assumptions ... 

Lay, J. J. 2000. Modeling and optimization of anaerobic digested sludge converting starch to hydrogen. Biotech. Bioeng. 68, 269-278. 

Dynamic Modeling and Simulation of the Anaerobic Digestion Process... 

The anaerobic digestion process has a poor record with respect to process stability with the major problems appearing to be in the area of process operation. There is a need for a dynamic model to quantify process operation and replace the empirical rules currently used. This... 

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