• -Published a paper on “Application of Upflow Anaerobic Bio filters for biogas production” for world renewable Energy Congress, held at Colorado U. S A. (September 2004).
  • -Published and presented a paper on “ Pilot Market Garbage Disposal Project according to Biogas Technology” for “World Conference on Energy for Sustainable Development held at Cairo, Egypt (December 2004).
  • -Published and presented a paper on “Biogas Technology with UAFF for Wastewater Treatment” for “World Renewable Energy Regional Congress & Exhibition 2005”, held at Jakarta, Indonesia. (April 2005)
  • -Present a paper at, the SAARC Seminar Workshop on Waste Recycling Based on Biogas Technology - Dhaka, Bangladesh - ( July 1995)
  • -Published and presented a paper on “Anaerobic bio filter systems to have the best yield of biogas with the treatment of piggery wastewater” for World Renewable Energy Congress IX, Florence, Italy (August 2006)
  • -Selected for the oral presentation and publish the paper on “Market Garbage Disposal According to Biogas Technology” for the international conference on “Sustainable Urban Environmental Practices” at Chiang Mai, Thailand. (October 2008)