This paper discusses a model of two interconnected chemostats in series, characterized by biomass mortality. A comparison is established with single chemostat the same total volume different cases, that are or without mortality rate. The outlet substrate concentration and biogas flow rate main criteria for comparison. According to conditions depending on operating parameters distribution volume...

In a previous study, the two nitrifying functions (ammonia oxidizing bacteria (AOB) or nitrite-oxidizing bacteria (NOB)) of a nitrification reactor—operated continuously over 525 days with varying inputs—were assigned using a mathematical modeling approach together with the monitoring of bacterial phylotypes. Based on these theoretical identifications, we develop here a chemostat model that doe...

The production of Schizophyllan by Schizophyllum commune and Scleroglucan by Sclerotium rolfsii is growth associated. Shear stress as a result of the impeller type and rotation speed as well as an optimum but not maximum oxygen supply are the key factors for enhanced production. Batch cultivations resulted maximum yields of 13 g L for both ß-glucans. In oxygen limited chemostats with biomass fe...

We show how a particular spatial structure with a buffer globally stabilizes the chemostat dynamics with non-monotonic response function, while this is not possible with single, serial or parallel chemostats of the same total volume and input flow. We give a characterization of the set of such configurations that satisfy this property, as well as the configuration that ensures the best nutrient...

Here, we describe instructions for the assembly of an array of miniature (20-mL) chemostats or "ministats" built from relatively inexpensive off-the-shelf parts. In experiments with yeast cultures, we have observed reproducibility in cellular physiology, gene expression patterns, and evolutionary outcomes with different ministats as well as between ministats and commercial large-volume platform...

This paper investigates the dynamics of a model two chemostats connected by Fickian diffusion with bounded random fluctuations. We prove existence and uniqueness non-negative global solution as well compact absorbing attracting sets for solutions corresponding system. After that, we study internal structure set to obtain more detailed information about long-time behavior state variables. In suc...