This project utilizes fundamental physics principles such as magnetism, direct current (DC), and electromagnetic induction to automatically separate metal waste from mixed materials. By utilizing a conveyor belt system combined with a solenoid powered by DC current, metal pieces are absorbed and removed from non-metal waste without manual handling.
The main objective of this project is to create a machine that reduces manual labor and sorting time by reducing manual labor and scheduling. The machine carries mixed waste on a conveyor belt while the solenoid's magnetic field attracts metal objects. This reduces landfill waste and promotes environmental sustainability by increasing the recycling rate of metals.

The automatic system reduces the amount of metal sent to landfills, which decreases the pollution caused by corroding metals releasing toxic substances. Additionally, by minimizing manual sorting, it reduces labor costs and reduces time.

The machine's performance improves as the number of solenoid wire turns increases, resulting in a stronger magnet. Tests demonstrated that with more turns, more metal waste could be collected. For example, 250 wire turns obtained 65 grams of metal, while only 10 grams were collected with 50 turns. The machine achieves over 90% efficiency in separating metals.
This project demonstrates a practical and sustainable solution for metal waste management. It utilizes physics to make recycling more efficient and more efficient, enabling to reduce environmental harm and landfill overcrowding.
Article by:Nurul Akmal Najihah, Nur Adriana, Nur Haziqah Hifdzi, Mohamad Dehya Qalbi, Ahmad Iman Zafar, Nur Ain Asyiqin and Dr. Ya’akob Mansor.
Date of Input: 05/06/2025 | Updated: 05/06/2025 | emma

Universiti Putra Malaysia
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