Relationship between Different Anaerobic Digestion Parameters in a Pig-dung Aided Water Hyacinth Digestion Process

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  •   Ochuko M. Ojo

  •   Josiah O. Babatola

  •   Taiwo O. Olabanji

Abstract

This study is aimed at assessing the relationship between different anaerobic digestion parameters (biogas quality, retention time, pH, temperature, biogas pressure, volume of biogas produced and cumulative volume of gas produced) in a Pig-dung (PD) aided Water Hyacinth (WH) digestion process in order to maximize biogas yield in terms of quantity and quality. 25 - litre capacity plastic prototype digesters were used in the study and eleven (11) mix ratios of PD and WH were prepared namely: 10 WH: 0 PD, 9 WH: 2 PD, 8 WH: 2 PD, 7 WH: 3 PD, 6 WH: 4 PD, 5 WH: 5 PD, 4 WH: 6 PD, 3 WH: 7 PD, 2 WH: 8 PD, 1 WH: 9 PD and 0 WH: 10 PD. The digestion process was evaluated for a retention period of 40 days. A bivariate Pearson correlation analysis was carried out to examine the relationship between the quality of gas produced and other variables. The results revealed that daily gas production yields greatly improved in the co-digestion runs with mix 3 WH: 7 PD recording the highest maximum daily yield of 9.5 L with a cumulative gas volume of 140 L. For this mix, the methane content of the gas produced increased from 5.8% on day 4 to 69.2% on day 20. The least quantity and quality of gas was produced by mix 10 WH: 0 PD with a maximum daily yield 2.34 L and a cumulative gas yield of 32.18 L. The digestion of all the mixes occurred within a mesophilic temperature range of 28.2 to 31.4 0C and an increase in temperature within the digestion resulted in an increase in the quality of gas produced. The gas pressure ranged from 1 bar to 3.324 bars with an increase in gas pressure leading to a corresponding increase in volume of gas produced. The pH of the substrates ranged from 6.1 to 8.4 with the values low at the start of the digestion process and gradually increasing to its maximum at the end of the digestion process. The results revealed a very strong, positive and significant association between the quality of the biogas produced and other digestion parameters.


Keywords: Anaerobic digestion, biogas quality, correlation analysis, relationship

References

Ojo O.M. Biogas Production through Anaerobic Co-Digestion of Water Hyacinth and Poultry Manure. Nigerian Research Journal of Engineering and Environmental Sciences. 2021;6(2):735–740.

Akinola A.O. Renewable Energy Development for Sustainable National Growth. 2016 SEET Annual Conference Proceedings, FUTA, Nigeria, pp. 123–130, 2016.

Roopnarain A., Adeleke R. Current Status, Hurdles and Future Prospects of Biogas Digestion Technology in Africa. Renew. Sust. Energ. Rev. 2017;67:1162–1179.

Perna C., Burrows D. Improved dissolved oxygen status following removal of exotic weed in important fish habitat lagoons of the tropical Burdekin River floodplain, Australia, Mar. Pollution Bulletin, 2005;51:138–148.

Ojo O.M., Babatola J.O., Adesina A.A., Akinola A.O., Lafe O. Synergistic Effect of co-digesting different mix ratios of Water Hyacinth and Cow-dung for Biogas production. FUTA Journal of Engineering and Engineering Technology, Nigeria, 2018;12(1):54–59.

Ojo O.M., Babatola J.O. Appraisal of Cumulative Volume of Biogas Produced from Water Hyacinth and Selected Animal Dungs Co-Digestion Mixes. Journal of Civil Engineering and Urbanism, 2021;11 (5):58–64.

Howard G.W., Matindi, S.W. Les espèces étrangères envahissantes dans les zones humides de l’Afrique, UICN, GISP, RAMSAR, 15 pp. 2003.

Katima J.H.Y. Production of biogas from water hyacinth: Effect of substrate concentration, particle size and incubation period. Tanzania Journal of Science, 2001;27(1):107–119.

Patil J.H., Molayan A.R., Bhargav S., Sowmya S.R. Anaerobic co-digestion of water hyacinth with primary sludge, Research Journal of Chemical Science, 2011;1(3):72–77.

Ojo O.M. Biomethanation of Water Hyacinth and Selected Animal Dungs for Biogas Production. Ph.D Thesis in the Department of Civil Engineering, The Federal University of Technology, Akure; 2017.

Ojo O.M., Babatola J.O., Akinola A.O. Regression Analysis of Biogas Production from the Co-Digestion of Water Hyacinth and Pig Dung. FUOYE Journal of Engineering and Technology, Nigeria. 2018;3(2):141–145.

Ojo O.M., Babatola J.O. Association between Biogas Quality and Digester Temperature for Selected Animal Dung-Aided Water Hyacinth Digestion Mixes. Journal of Applied Science and Environmental Management, 2020;24(6):966-959.

Adelodun A.A., Olajire T.M., Ojo O.M. Biogas Generation from Co-Digestion Waste Systems: The Role of Water Hyacinth; IntechOpen, 2022, pp. 1–20.

Sillar B. Dung by preference: The choice of fuel as an example of how Andean pottery production is embedded within wider technical, social and economic practices. Archaeometry. 2000;42:43–60.

Okoli C.G., Edo F.A., Ogbuewu I.P., Nwajiobi I.J., Enemor V.H.A. Okoli I.C. Biochemical values of pig dung collected from different locations in Imo state, southeastern Nigeria. Asian J. Biol. Sci., 2019;12:470–476.

Izmaylov A., Briukhanov A., Shalavina E., Vasilev E. Pig Manure Management: A Methodology for Environmentally Friendly Decision-Making. Animals, 2022;12:747. https://doi.org/10.3390/ani12060747.

Iregbu G.U., Kubkomawa I.H., Okoli C.G., Ogundu E.C., Uchegbu M.C., Okoli I.C. Environmental concerns of pig waste production and its potentials as biofuel source. J. Anim. Vet. Sci., 2014;1:17–24.

Abdel-Hadi M.A., Abd El-Azeem S.A.M. Effect of heating, mixing and digester type on biogas production from buffalo dung. Misr Journal of Agricultural Engineering, 2008;25(4):1454–1477.

Yu H.Q, Fang H.H.P. Acidogenesis of dairy wastewater at various pH levels. Water Science Technology, 2002;43(10):201–206.

Wang H., Lehtomaki A., Tovanen K., Puhakka J. Impact of crop species on bacteria community structure during anaerobic co-digestion of crops and cow manure. Bioresource Technology, 2009;100:2311–2315.

Ojo, O.M. Daily and Cumulative Biogas Yields from Selected Animal Dungs. In: Ayeni, A.O., Sanni, S.E., Oranusi, S.U. (eds) Bioenergy and Biochemical Processing Technologies. Green Energy and Technology. Springer, Cham, pp. 37–44, 2022. https://doi.org/10.1007/978-3-030-96721-5_4.

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How to Cite
[1]
Ojo, O.M., Babatola, J.O. and Olabanji, T.O. 2022. Relationship between Different Anaerobic Digestion Parameters in a Pig-dung Aided Water Hyacinth Digestion Process. European Journal of Engineering and Technology Research. 7, 4 (Aug. 2022), 10–13. DOI:https://doi.org/10.24018/ejeng.2022.7.4.2841.