Scienceline Publications Journal of Civil Engineering and Urbanism 2252-0430 11 5 2021 November Appraisal of Cumulative Volume of Biogas Produced from Water Hyacinth and Selected Animal Dungs Co-Digestion Mixes 58 64 https://ojceu.com/main/attachments/article/85/JCEU%2011(6)%2058-64,%202021.pdf EN Ochuko M. Ojo Department of Civil Engineering, the Federal University of Technology, Akure, PMB 704, Ondo State, Nigeria Josiah O. Babatola Department of Civil Engineering, the Federal University of Technology, Akure, PMB 704, Ondo State, Nigeria Water Hyancinth (WH) was co-digested with different mix ratios of poultry manure (PM), cow dung (CD) and pig dung (PD). A comparative analysis of the cumulative volume of gas produced from the different co-digestion mixes was carried out. The monitoring of the digestion process was done on a daily basis for a retention period of 40 days. The efficacy of the digestion process as well as the best mix ratio of water hyacinth to the different animal dungs was also evaluated in terms of the volume of gas produced. A rotameter with a capacity of 0.1-1L/Min equipped with a measuring tube was used for the gas flow measurements. From the results obtained the best mix of the PDaided WH digestion is 3 WH:7 PD while CD - aided WH digestion is 2 WH:8 CD and PM-aided WH digestion is 2 WH: 8 PM. The study also revealed that the PM-aided WH mix produced more biogas compared to the CD-aided and PD-aided WH digestion mix. Co-digested comparative cumulative digestion biogas