When glass is recycled, it is broken into small pieces called cullet. The broken pieces are crushed, sorted, cleaned, and mixed with other raw materials in the glass-making process. When glass is made from scratch, high temperatures are needed to melt all the ingredients. Since cullet melts at a lower temperature, the more of it you add to the process, the less energy is required to melt it. Recycling glass is not only energy-efficient; it benefits the environment in other ways as well. Glass produced from recycled glass instead of raw materials reduces related air pollution by 20% and related water pollution by 50%. Lastly, recycling glass keeps used bottles and jars out of landfills.
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