Affiliation:
1. Mechanical Engineering, Madonna University, Enugu, Nigeria
2. Mechanical Engineering, Madonna University, Enugu, Nigeria; Mechanical Engineering, Nnamdi Azikiwe University, Anambra, Nigeria
Abstract
The Anaerobic Digester designed and constructed for waste ingestion from the Nigerian cocoa industry aims to harness abundant renewable energy from crop residues like cocoa rinds and groundnuts. This study evaluates the biogas potential of these sources in contributing to the country's overall energy needs, emphasizing the imperative for environmental sustainability. Focusing on reducing fossil energy consumption, greenhouse gas emissions, and minimizing environmental impact, the project advocates for a shift towards biogas for day-to-day energy requirements, presenting direct cost savings. The utilization of fossil fuel-derived energy is known to contribute to temperature increase, greenhouse gas emissions, noise pollution, and ground-level air pollution, all of which can be mitigated through biogas utilization. This initiative involves the design and construction of a 0.24m<sup>3</sup> pilot plastic fossil plant for biogas generation, aiming to "green" various applications, including domestic and industrial usage as well as transportation. The digester, constructed from high-density polyethylene (HDPE) plastic, demonstrates leak-free operation, further supporting its potential for long-term sustainability. Results from a 28-day retention period show a cumulative biogas yield, with a daily assessment indicating a gas yield of 0.0496 m<sup>3</sup> on the 12th day. The study highlights the positive and negative influences of temperature inequality gradients ≥34°C≤38°C on biogas production. This comprehensive research contributes valuable insights for the sustainable management of waste and the utilization of biogas as a viable alternative energy source.
Reference34 articles.
1. Adenikinju, S A (1991). Preliminary comparative analysis of cocoa yield under three treatments in combination with oil palm in Nigeria, Vol. 24 Ghana Journal of Agricultural Science.
2. Akinbami, J. F. K (1999). Biogas Energy use in Nigeria. Obafemi Awolowo University Press. Ile-ife.
3. Anozie, A., Layokun, S., and Okeke, C. (2005). Energy Sources, Vol. 27, No. 14, PP. 1301-1311.
4. Baker Kathleen (2000). Indigenous Land Management in West Africa, an Environmental Balance Act. Oxford University Press, UK.
5. Bamgboye, A. I. and Abayomi, I. (2002). Anaerobic Digester of Mixed Weed Species into Biogas, Nigeria Journal of Renewable Energy. Vol. 8, Nos. 1 & 2, PP. 19-23.