Why is it cheaper to recycle aluminium other than to extract it?

Recycling aluminium is significantly cheaper than extracting it because:

  1. Energy consumption: Extracting aluminium from bauxite ore via electrolysis consumes large amounts of energy (approximately 13,000 kWh per tonne). Recycling, on the other hand, only requires a small fraction of this energy (about 5% of the energy used in extraction).
  2. Raw material availability: Aluminium ore, bauxite, is a finite resource. Recycling reduces the demand for new ore, conserving natural resources and protecting the environment.
  3. Reduced greenhouse gas emissions: Extracting aluminium releases significant amounts of greenhouse gases, primarily carbon dioxide (CO2). Recycling greatly reduces these emissions by using existing materials.
  4. Waste reduction: Recycling aluminium keeps it out of landfills, conserving space and reducing environmental pollution.
  5. Economic benefits: Recycling creates jobs, supports local economies, and reduces the overall cost of aluminium products for consumers.

Related questions and answers:

  1. What is the main reason for the high cost of extracting aluminium? The high energy consumption required for electrolysis.
  2. What environmental benefit does aluminium recycling provide? Reduced greenhouse gas emissions and waste reduction.
  3. Why is it important to recycle aluminium? Conserving natural resources, reducing pollution, and creating economic benefits.
  4. What are the main differences between extracting and recycling aluminium? Energy consumption, raw material availability, and environmental impact.
  5. How does recycling aluminium support sustainable practices? By reducing waste, conserving resources, and mitigating greenhouse gas emissions.

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