Summary
Highlights
In 2022, 62 million tons of e-waste were generated globally, with only 30% recycled. Sophie Tse introduces a circular copper wire brush made from end-of-life electrical cables as a sustainable solution.
These copper brushes, powered by motors, remove rust and paint. Unlike standard costly virgin wire brushes, this product reuses copper from locally sourced old cables. Copper dissipates electrical charge effectively, preventing sparks and making it safer for combustible environments, such as the oil and gas industry. It's also softer than steel, making it more surface-friendly.
While most copper recycling processes are energy-intensive, involving shredding, smelting, and electrolytic refining, this method bypasses these steps. The copper wire from old cables is directly reused in its current form, saving significant processing energy because it doesn't need to be smelted or electrically certified.
Cables are collected from partner sites, ensuring standardized sizes for efficient insulation stripping and clean copper recovery. The exposed wire is cut into bristle lengths, then fed into drilled holes in steel discs and locked into place. Three discs are stacked, pressed with an eyelet, and form the brush. When bristles wear out, they are removed, and the steel discs are reused for future production cycles, promoting circularity.