Authors :
Orkuma J.G; Samuel, D.A; Eziefula B.I; Okoro, O.M
Volume/Issue :
Volume 9 - 2024, Issue 12 - December
Google Scholar :
https://tinyurl.com/bdd3v8tn
Scribd :
https://tinyurl.com/yscrw7ku
DOI :
https://doi.org/10.5281/zenodo.14603613
Abstract :
This study assessed biogas yield enhancement
by the co-digestion of Cattle Dung (CD) and acha
(Digitaria exilis) hulls (AH) due the perceived synergy of
these wastes to improve biomethane yield. Ultimate
properties of the CD and AH useful for biogas process
stability were evaluated. Triplicate experiments were
conducted in 1000 mL polyethylene biodigester at the
organic loading rates (OLR) of 4, 6 and 8 g VS/L and
inoculum to substrate ratio of 2:1 in Biodigesters A, B, C
and control at ambient temperature. Response Surface
Methodology’s was used to assess the effect of process
parameters on cumulative biogas yield (CBY). The results
show that the average composition (%) of total solids,
volatile solids, N and C were 82.43, 64.86, 3.18 and 37.62
respectively for CD and 92.61, 85.22, 1.68, and 49.43
respectively for AH. The C:N ratio was 12:1 for CD,
29.58:1 for AH and averaged 20.79:1. Biodigester B
(663.42mL) with 4 g VS/L recorded the highest biogas
volume, followed by A (581.95mL) and then the control
(489.77). Biodigester C (475.60mL) had the least volume.
ANOVA showed that OLR (F = 62.49, p < 0.01) and time
(F = 89.01, p < 0.01) were significant predictors of CBY
but ambient temperature was not. The optimization
prediction shows that cumulative biogas volume of 507.63
mL can be attained when the biodigester is operated at 4
g VS/L at 33 °C, over 34 days. This result supports the
notion that codigestion increases biogas yields.
Keywords :
Biogas - Anaerobic Codigestion -Cattle Dung - Acha Hull.
References :
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- Elinge, C.M., Ige, A.R., Adesina, M.O., Ogala, H., Hassan, L.G. and Mbongo, A.N.L., 2021. Effect of Millet Stalks and Shea Nut Shells on Biogas Production. The Journal of Solid Waste Technology and Management, 47(2), pp.292-296.
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- Okewale, A.O., Omoruwou, F. and Anih, C.E. (2018) Production of Biogas from Co-Digestion of Cattle Dung, Saw Dust and Maize Husk. Advances in Chemical Engineering and Science, 8: 113-123.
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- Raposo, F,, Fernández-Cegrí, V., De la Rubia, M.A., Borja, R., Béline, F., Cavinato, C., Demirer, G., Fernández B., Fernández-Polanco M, Frigon JC, Ganesh R, Kaparaju P, Koubova, J., Méndez, R., Menin, G., Peene, A., Scherer, P., Torrijos, M., Uellendahl, H., Wierinck, I., de Wilde, V. (2011). Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international inter-laboratory study. Journal of Chemical Technology and Biotechnology, 86:1088–1098.
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- Surra, E., Bernardo, M., Lapa, N., Esteves, I., Fonseca, I., Mota, J.P., (2019). Biomethane production through anaerobic co-digestion with Maize Cob Waste based on a biorefinery concept: A review. Journal of Environmental Management, 249: 1-21. https://doi.org/10.1016/j.jenvman.2019.109351
- Ukpai, P.A. and Nnabuchi, M.N., (2012). Comparative study of biogas production from Cattle dung, Cattle pea and cassava peeling using 45 litres biogas digester. Advances in Applied Science Research, 3(3):1864-1869.
- Wilma, S.S., Emeses, B.O., and Rambo, E. K. (2018). Prospects and Constraints to Ache Production and Processing in Bogor Local Government Area of Bache State: Implication to Relevant Technology Transfer. Journal of Agriculture and Veterinary Science, 11(7): 58-64.
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This study assessed biogas yield enhancement
by the co-digestion of Cattle Dung (CD) and acha
(Digitaria exilis) hulls (AH) due the perceived synergy of
these wastes to improve biomethane yield. Ultimate
properties of the CD and AH useful for biogas process
stability were evaluated. Triplicate experiments were
conducted in 1000 mL polyethylene biodigester at the
organic loading rates (OLR) of 4, 6 and 8 g VS/L and
inoculum to substrate ratio of 2:1 in Biodigesters A, B, C
and control at ambient temperature. Response Surface
Methodology’s was used to assess the effect of process
parameters on cumulative biogas yield (CBY). The results
show that the average composition (%) of total solids,
volatile solids, N and C were 82.43, 64.86, 3.18 and 37.62
respectively for CD and 92.61, 85.22, 1.68, and 49.43
respectively for AH. The C:N ratio was 12:1 for CD,
29.58:1 for AH and averaged 20.79:1. Biodigester B
(663.42mL) with 4 g VS/L recorded the highest biogas
volume, followed by A (581.95mL) and then the control
(489.77). Biodigester C (475.60mL) had the least volume.
ANOVA showed that OLR (F = 62.49, p < 0.01) and time
(F = 89.01, p < 0.01) were significant predictors of CBY
but ambient temperature was not. The optimization
prediction shows that cumulative biogas volume of 507.63
mL can be attained when the biodigester is operated at 4
g VS/L at 33 °C, over 34 days. This result supports the
notion that codigestion increases biogas yields.
Keywords :
Biogas - Anaerobic Codigestion -Cattle Dung - Acha Hull.