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  2. Recycling by material - Wikipedia

    en.wikipedia.org/wiki/Recycling_by_material

    Crushing concrete from an airfield Concrete recycling is the use of rubble from demolished concrete structures. Recycling is cheaper and more ecological than trucking rubble to a landfill. [3] Crushed rubble can be used for road gravel, revetments, retaining walls, landscaping gravel, or raw material for new concrete. Large pieces can be used ...

  3. PET bottle recycling - Wikipedia

    en.wikipedia.org/wiki/PET_bottle_recycling

    Singapore: plastic bottles are collected with glass bottles. The stream in which PET bottles are collected comprises PET bottles, other plastic bottles and glass bottles, and contamination. Switzerland: Retailers contribute a fee to a national operator (PRS) who manages collection bins, sorting and production of rPET flake.

  4. Waste minimisation - Wikipedia

    en.wikipedia.org/wiki/Waste_minimisation

    Reusable bags are a visible form of re-use, and some stores offer a "bag credit" for re-usable shopping bags, although at least one chain reversed its policy, claiming "it was just a temporary bonus". [8] In contrast, one study suggests that a bag tax is a more effective incentive than a similar discount. [9] (Of note, the before/after study ...

  5. Bottle recycling - Wikipedia

    en.wikipedia.org/wiki/Bottle_recycling

    Recycling one glass bottle can save enough energy to power a computer for 25 minutes. [5] In fact for every 10% of cullet added to the production of a new bottle, energy usage goes down by 3-4%. [2] Recycling one ton of glass can save approximately 42 kWh of energy which translates to 7.5 pounds of air pollutants not being released into the ...

  6. Zero waste - Wikipedia

    en.wikipedia.org/wiki/Zero_waste

    From the zero-waste standpoint, the reuse of bottles is beneficial because the material usage per trip can be less than other systems. The primary input (or resource) is silica-sand, which is formed into glass and then into a bottle. The bottle is filled with milk and distributed to the consumer.

  7. Making cement is very damaging for the climate. One solution ...

    www.aol.com/news/making-cement-very-damaging...

    Cement makes up 10-15% of concrete by volume, but accounts for 88% of concrete’s considerable emissions. Other ingredients in concrete are sand, gravel, crushed stone and water.