Christos A. Tzenos completed his master’s degree in Chemical Engineering at the AUTH Faculty of Engineering graduated in 2014, with a degree grade of 8.3. He has completed the Postgraduate Program of the Department of Agriculture of AUTH in 2020 and his postgraduate dissertation is titled and quot; Bioaugmentation of continuous anaerobic reactors operating under ammonia toxicity conditions – the effect of the hydraulic retention time and quot. His research area encompasses the effects of ammonia toxicity on anaerobic digestion processes and their optimization, the treatment of agricultural and municipal waste for the production of biogas and the possible applications following its production. He is currently working on research projects concerning the handling of agro-industrial waste through anaerobic digestion for the production of biogas.