As the use of electronic devices continues to rise, the management of electronic waste (e-waste) has become a critical issue. Printed circuit board (PCB) recycling methods are generally classified into physical and chemical approaches. As the use of electronic devices continues to rise, the management of electronic waste (e-waste) has become a critical issue. Printed circuit board (PCB) recycling methods are generally classified into physical and chemical approaches. Bio & Medicine Nanomaterials Phys.org – latest science and technology news stories