Mechanical design

Effective waste management remains a critical challenge in many urban and rural communities, particularly in developing countries where improper disposal contributes to environmental pollution and public health risks. This project focuses on the design and fabrication of a waste segregation system aimed at improving the sorting of municipal solid waste at the source. The system is engineered to automatically separate waste materials into distinct categories such as biodegradable, non-biodegradable, and recyclable components using a combination of sensors, mechanical components, and control mechanisms.
The design incorporates affordable and locally available materials to ensure cost-effectiveness and ease of replication. Key components include a conveyor mechanism, sensing units for material identification, and sorting bins for categorized waste collection. The fabrication process involved assembling the mechanical framework, integrating electronic control systems, and testing the functionality of the system under different waste conditions.
Performance evaluation of the system demonstrated its ability to accurately segregate waste with improved efficiency compared to manual sorting methods. The results indicate that the system can significantly reduce human effort, minimize environmental hazards, and enhance recycling processes. This study concludes that the developed waste segregation system is a practical and sustainable solution for improving waste management practices, and it holds potential for adoption in households, institutions, and small-scale industries. Effective waste management remains a critical challenge in many urban and rural communities, particularly in developing countries where improper disposal contributes to environmental pollution and public health risks. This project focuses on the design and fabrication of a waste segregation system aimed at improving the sorting of municipal solid waste at the source. The system is engineered to automatically separate waste materials into distinct categories such as biodegradable, non-biodegradable, and recyclable components using a combination of sensors, mechanical components, and control mechanisms.
The design incorporates affordable and locally available materials to ensure cost-effectiveness and ease of replication. Key components include a conveyor mechanism, sensing units for material identification, and sorting bins for categorized waste collection. The fabrication process involved assembling the mechanical framework, integrating electronic control systems, and testing the functionality of the system under different waste conditions.
Performance evaluation of the system demonstrated its ability to accurately segregate waste with improved efficiency compared to manual sorting methods. The results indicate that the system can significantly reduce human effort, minimize environmental hazards, and enhance recycling processes. This study concludes that the developed waste segregation system is a practical and sustainable solution for improving waste management practices, and it holds potential for adoption in households, institutions, and small-scale industries.

Yam (Dioscorea spp.) remains a major staple and economic crop in Nigeria, where it serves as a vital source of food and income. However, traditional yam processing methods involving manual pounding are time-consuming, labor-intensive, and unhygienic, making them unsuitable for large-scale or commercial production. This study focuses on the design, fabrication, and
performance evaluation of an automated yam blending machine with an emphasis on minimizing material leakage—a common limitation in existing models.
The machine was designed using mechanical and food engineering principles to achieve
efficient blending through an electrically powered motor, stainless-steel blending chamber, and an effective sealing system that prevents leakage.
Locally sourced materials were used to enhance affordability and promote indigenous
technology. Performance evaluation showed that the machine successfully pounded 500 g of boiled yam within an average of 2.7 minutes, achieving an output efficiency of 97% and a throughput capacity of 16.18 kg/hr.
The pounded yam produced exhibited excellent textural qualities comparable to traditionally prepared samples. The developed machine demonstrated improved hygiene, ease of operation, and significant reduction in processing time, thereby offering a viable solution for household and small-scale commercial yam processing. This innovation contributes to Nigeria’s local equipment fabrication efforts and enhances food processing mechanization.