Materials

Different materials behave differently in collection, sorting, and markets.

Types, resin codes, acceptance rules, and contamination control.

Color sorting, breakage, transport economics, and what not to include.

Fiber grades, wet/greasy contamination, and packaging traps.

Aluminum and steel: high value, strong climate benefits.

Devices, batteries, hazardous components, and compliance.

Reuse, repair, and fiber-to-fiber recycling basics.

Composting, digestion, and methane avoidance.