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Title: Methane production enhancement and comparative study of biodegradation of some plants and animal wastes
Authors: Veronica, Ezekoye
Offor, Peter
Anthony, Ofomatah
Ada, Agbogu
David, Ezekoye
Keywords: Anaerobically;Cumulative comparison;Digesters;Mesophilic;Substrate
Issue Date: Aug-2020
Publisher: NISCAIR-CSIR, India
Abstract: This study investigated the production of methane using various substrates. Plantain peels, pig dung, poultry droppings, walnut  peels/plantain  peels  and  cow  blood/wheat  waste  were  all  co-digested,  charged  in  digesters  (A-E)  and  allowed  to ferment anaerobically for forty-five (45) days within the mesophilic temperature range of 20.0-39.0°. Digester A contained 3.9 Kg of wheat waste/cow blood and 19.5 Kg of water in the ratio of 1.5 which gave a total gas yield of 22.5 L of biogas; B contained 7.8 Kg of walnut peels/plantain peels and 15.6 Kg of water in the ratio 1:2 which gave a total gas yield of 115.0 L; C contained 8 Kg of plantain peels and 16 Kg of water which yielded 133.0 L of biogas; D contained 8 Kg of pig dung mixed thoroughly with 16 Kg of water which gave a total of 321.0 L; and E contained 8 Kg of poultry droppings mixed with 16 Kg of water which yielded 168.5 L of biogas. From the cumulative comparison of the biogas yields of the samples, pig dung gave the highest yield  of 321  L and  cow blood/wheat  husk produced the lowest yield  of 22.5  L. Pig dung (animal waste) gave the highest total viable count (TVC) of 7 × 106 cfu/mL. The sludge contains NPK which is a good biofertilizer.
Page(s): 449-457
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJBB Vol.57(4) [August 2020]

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