1Technological Educational Institute (TEI) of Ionian Islands, Department of Environmental Technology, Neo Ktirio-Panagoula, Zakynthos, Greece, E-mail: dkoul@ionio.gr
*Corresponding Author:
Dimitrios Nikolopoulos, Piraeus University of Applied Sciences, Department of Electronic Computer Systems Engineering, Petrou Ralli And Thivon 250, GR-122 44, Aigaleo, Greece Email: