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Advancements in Waste Digester Technology: A Comprehensive Study of a 32-Litre Chicken and Goat Waste Digester’s Development and Performance Evaluation
Abstract:
This research focuses on utilizing chicken and goat waste in varying mixing ratios to generate biogas. A 32-liter prototype biogas plant was constructed at the National Centre for Energy Research and Development, University of Nigeria, Nsukka, to investigate anaerobic digestion and biogas production from two types of waste: chicken waste and goat waste, both individually and in co-digestion.
The mixing ratios of chicken waste to goat waste used in the digesters were as follows: (100:0), (30:70), (70:30), (50:50), and (0:100) by weight percent for digesters 1, 2, 3, 4, and 5, respectively. The digesters were charged with a 1:3 ratio of waste to water. The experiment was conducted under mesophilic ambient temperature conditions ranging from 26°C to 38°C, with a slurry temperature of 25°C to 32°C.
The results revealed that the different samples (I, II, III, IV, and V) produced varying amounts of biogas: 17.3 L, 44.3 L, 74.3 L, 86.2 L, and 113.2 L, respectively, over a 30-day period in the 32 L digester. Notably, chicken waste alone (sample V) exhibited the highest volume of biogas production compared to other waste combinations.
Moreover, the analysis of biogas composition showed that sample IV had the highest methane content at 63.3%, followed by sample III at 59.4%, sample II at 59.2%, sample I at 59.1%, and sample V with the least methane content at 57.3%.
The findings of this study demonstrate the potential of goat waste for methane production, especially when combined with other animal wastes for biogas generation. Additionally, chicken droppings were found to be highly favorable for biogas production, outperforming other waste sources in terms of biogas volume. This research highlights the viability of utilizing animal wastes, particularly chicken and goat waste, for cooking gas generation through biogas production.
Advancements in Waste Digester Technology: A Comprehensive Study of a 32-Litre Chicken and Goat Waste Digester’s Development and Performance Evaluation
