1. Ph.D. Candidate, Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute (CERTH/CPERI), 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece.
2. Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute (CERTH/CPERI), 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece; Clean Energy Ltd., 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Kozani, Greece (corresponding author).
3. Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute (CERTH/CPERI), 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece; Clean Energy Ltd., 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Kozani, Greece.
4. Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute (CERTH/CPERI), 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece.
5. Professor, Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute (CERTH/CPERI), 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece.