UTILIZATION OF PARTHENIUM PLANT LEACHATE FOR BIOGAS PRODUCTIONG. GITANJAILI, A. KUMARESAN, M. DHARMARAJ AND T. KARUPPAYEEAbstract A laboratory batch fed fermentation study was carried out in 5 L Hofkin flasks. 2Kg of cowdung mixed with 2 L of water plus 5% inoculum collected from a running biogas plant was kept as control and 2Kg of cowdung mixed with 2 L of Parthenium leachate (extract collected by soaking the plants in water for a week) plus inoculum was kept as treatment flask. Fermentation flasks were sealed tightly and kept as such for 60 days. Initial and final samples were taken for the analysis of biochemical parameters. Gas production was recorded by water displacement method. Gas production recorded in this study was 159 L Kg-' TS in the case of control and 198 LKg-ITS with Pnrthenium leachate added flask. The same experiment was repeated in semi continuous digestion with 1 cum biogas plants at field level. Gas production was recorded as 165 ± 5.38 L Kg-ITS with control and 191+3.21 L Kg-' TS with Ruthenium leachated added plant. Therefore Parthenium leachate could be effectively used to augment biogas production and the residue could be used as manure after fungal treatment.
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