1. Chemical Engineering Department; Federal Technological University of Paraná (UTFPR), Linha Santa Barbara; Francisco Beltrao PR 85601-970 Brazil
2. Chemical Engineering Department; Federal Technological University of Paraná (UTFPR), Rua Marcilio Dias, 635, Jardim Paraíso; Apucarana PR 86812-460 Brazil
3. Statistics Department; State University of Maringá (UEM), Bl. E90-206; Maringá PR 87020-900 Brazil
4. Chemical Engineering Graduate Program (PEQ); State University of Maringá (UEM), Bl. E-46; Maringá PR 87020-900 Brazil