Environmental scienceLesson 1 of 2 in the course Waste management

Recycling Systems: Materials, Methods, Markets, and Impacts

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

This lesson introduces recycling, its place in waste management, and the materials and processes involved. Understanding these basics helps people make informed choices about waste and resource use.

Recycling is the process of converting waste materials into new materials or objects. Some definitions also include recovering energy from waste, although energy recovery is distinct from making new material products.

All flashcards

What is recycling?
Recycling converts waste material into new material or objects. Some definitions also include energy recovery, though that is different from manufacturing new material products.
What is a recyclate?
A recyclate is material that has been sent to and processed at a recycling plant or materials-recovery facility for use in making new materials or products.
What is the Reduce, Reuse, Recycle hierarchy?
It is a waste-reduction sequence: first reduce unnecessary consumption, then reuse items, and recycle material when reuse is no longer practical.
Name four common recyclable material groups.
Examples include glass, paper and cardboard, metals, plastics, tires, textiles, batteries, and electronics. Acceptance depends on local services.
What are the main stages in a recycling pathway?
Collection, sorting and cleaning, reprocessing into usable material, and manufacturing new products from that recovered input.

Quiz questions

  1. Which description defines single-stream recycling?Answer: Recyclable materials are collected together but kept separate from ordinary waste.
  2. At a materials-recovery facility, what does an eddy-current system separate?Answer: Non-ferrous metals, such as aluminum, from other materials.
  3. What is closed-loop recycling?Answer: Processing material into the same or a similar product without significant quality loss.
  4. Which policy can directly increase demand for products made from recovered materials?Answer: A minimum recycled-content requirement for specified products.
  5. What does life-cycle analysis help compare when evaluating recycling?Answer: Environmental impacts across collection, transport, processing, and manufacturing.

Based on the Wikipedia article Recycling, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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