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Four potentials of biogas yield from cow dung-CD

Asikong Bassey E, Epoke James, Agbo Bassey E., Antai E. E. and Eja Matthew E.

The potentials of biogas yield from cow dung were analyzed using standard microbiological methods. The results revealed that optimum biogas yield from cow dung without starter culture was 345mls, 640mls and 720mls and in the treatment with starter culture was 490mls, 640mls and 830mls respectively in 1kg, 2kg and 3kg weights within 15 days. The 1kg, 2kg and 3kg weights gave a total biogas yield of 2339mls, 3302mls and 4436mls with starter culture and 1141mls, 2650.50mls and 3750mls without starter culture respectively. Percentage biogas yield of 15%, 33% and 49.70% was respectively recorded for the 1kg, 2kg and 3kg weight without starter culture while that with starter culture yielded 23.21%, 32.76% and 44.00% from the 1kg, 2kg and 3kg weights. Results showed that there was significant difference in the non-inclusion (without starter culture) [F (2, 16) = 29.34, P < 0.001] and inclusion (with starter culture) [F (2, 16) = 25.87, P < 0.001] of starter culture for the different weights of biogas generated from cow dung at the 1% level of significance. Positive correlation also existed between the digesters with or without starter culture.