1. a UNI-BH, Centro Universitário de Belo Horizonte , Brazil
2. b Mechanical Engineering Department , National University of Singapore , Kent Ridge Crescent , Singapore
3. c Research Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry , Nanjing , China
4. d Centro de Secagem, Dep. de Engenharia Química , Universidade Federal de São Carlos , São Carlos , SP , Brazil