1. a International Postgraduate Programs in Environmental Management, Graduate School , Chulalongkorn University , Bangkok , Thailand
2. b National Center of Excellence for Environmental and Hazardous Waste Management (NCE-EHWM) , Chulalongkorn University , Bangkok , Thailand
3. c Department of Environmental Science, Faculty of Science , Chulalongkorn University , Bangkok , Thailand
4. d Environmental Research and Training Center , Pathumthani , Thailand
5. e College of Public Health Sciences , Chulalongkorn University , Bangkok , Thailand