Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XIX
Written by Horia-Matei BARDEANU, Cristinel-George POPESCU, Stefana JURCOANE
The purpose of this research is to identify the influence of trace elements concentrations in fermentation tanks on the biogas yield and plant efficiency. In order to make Anaerobic Digestion more efficient and optimized, measures of the process are often made. In this way the biogas plant managers are trying to produce as much biogas from the given substrate as possible, while at the same time maintaining a reasonable level of process stability. Trace elements (ex. Cobalt, Iron, Selenium, Zinc, etc.) are needed for the growth of the microorganisms involved in biogas biosynthesis. This is mainly related to the fact that most of them are situated in active parts of enzymes, thus having a strong influence on their activity. Maintaining a normal concentration of those elements inside the Fermentation medium is a vital part of the Anaerobic Digestion process and adding supliments of trace elements in the biogas fermenter has often proved beneficial by increasing the biogas production, resulting in a more stable and efficient methane production. The importance of the biogas production and its components are well known because they are strictly related to the operation of the Cogeneration Module which uses it as a fuel. Also very important is to increase the CH4 percentage contained in one cubic meter of biogas in order to have a superior calorific power and a good cogeneration efficiency.
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anaerobic digestion
