Fuzzy Control of a Microalgae GrowMh Process in Photobioreactors

The paper deals with the fuzzy control of a photoautotrophic microalgae growth process in photobioreactors. The non-linear mathematical model of the process is presented and a fuzzy control algorithm is implemented in order to control simultaneously the algal biomass concentration, the pH and the average irradiance inside the photobioreactor. The results of the fuzzy control are obtained in numerical simulation and experimentally. The experiments were developed using the photobioreactor designed in our laboratory, from “Dunarea de Jos” University of Galati. The microalga Desmodesmus Quadricauda supplied by the Biological Research Institute from Cluj-Napoca, Romania, was used within the experiments.