1. Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
2. Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
3. Patumwan Demonstration School, Srinakharinwirot University, Bangkok 10330, Thailand
4. Faculty of Environmental Culture and Ecotourism, Srinakharinwirot University, Bangkok 10110, Thailand