1. Department of Chemical EngineeringFaculty of EngineeringKing Mongkut's University of Technology North Bangkok 1518 Pracharat 1 Rd., Wongsawang, Bangsue Bangkok 10800 Thailand
2. Center of Eco-Materials and Cleaner TechnologyKing Mongkut's University of Technology North Bangkok
3. Institute of Chemical TechnologyDepartment of ChemistryTechnical University of Kaiserslautern Erwin-Schrödinger-St. 54 67663 Kaiserslautern Germany