1. Engineering Faculty, Dept. of Chemical Engineering, Gazi Univ., Maltepe, Ankara 06570, Turkey.
2. Professor, Engineering Faculty, Dept. of Chemical Engineering, Gazi Univ., Maltepe, Ankara 06570, Turkey (corresponding author).
3. Assistant Professor, Engineering Faculty, Dept. of Civil Engineering, Gazi Univ., Maltepe, Ankara 06570, Turkey.
4. Engineering Faculty, Dept. of Civil Engineering, Gazi Univ., Maltepe, Ankara 06570, Turkey.