Biogas production potentials of aquatic weeds grown in constructed wetlands for waste water treatment in India 1P. J. Khankhane*, 2Nimal Chandrasena, 3K. K. Barman, 4J. S. Mishra, 5R. K. Saket 1 Visakha Water & Bio-Energy Consultancy Delhi, India 2 Nature Consulting Australia, 17 Billings Way, Winthrop, 6150, Western Australia 3, 4ICAR-Directorate of Weed Research Jabalpur (M.P.), India 5Indian Institute of Technology (BHU), Varanasi India *Email of correspondence: