Frequently Asked Questions about the Production and Transportation of Aluminum:
How is aluminum produced?
Aluminum is typically produced through the extraction and refinement of bauxite ore. The Bayer process is commonly used to extract alumina, which is then processed through electrolysis to obtain aluminum.
Why is aluminum production energy-intensive?
The smelting process of aluminum involves high-temperature electrolysis, demanding significant
amounts of electricity. Approximately 15,000 KWH of electricity is required to produce one tonne
of aluminum.
What percentage of global aluminum production relies
on clean energy sources?
While 100% of Canadian aluminum is produced using clean and renewable hydroelectricity, only
20% of the aluminum produced globally is made utilizing hydroelectric power, while the other
80% is dependent on coal or gas to produce the required electricity.
How does aluminum production contribute to CO2
emissions?
The production of new aluminum accounts for around 3% of global CO2 emissions, with 80% of
aluminum being manufactured using coal or gas. This significant carbon footprint is largely
attributed to the energy-intensive smelting process.
How does transportation impact the environmental
footprint of aluminum?
The transportation of aluminum can contribute to its environmental impact. Overseas shipping
adds to the carbon footprint.
Is imported aluminum subject to carbon taxes in Canada?
Surprisingly, imported aluminum, even if produced using carbon-rich sources, is not subject to
carbon taxes in Canada. This raises questions about fairness in comparison to domestically
produced aluminum.
Why does the source of aluminum matter?
The source of aluminum matters because it influences its environmental impact. Aluminum
produced with clean and renewable energy sources, like hydroelectricity, is considered a more
responsible and sustainable choice.
How can the environmental impact of aluminum be
mitigated?
Mitigating the environmental impact involves promoting cleaner energy sources in production,
optimizing transportation methods, and encouraging recycling practices to reduce the need for
primary production.
Are there international standards for sustainable
aluminum production?
While there isn't a universal standard, various initiatives and certifications, such as the Aluminium
Stewardship Initiative (ASI), aim to promote sustainability and responsible practices in the
aluminum industry.
How can consumers make environmentally conscious
choices regarding aluminum?
Consumers can choose products made from aluminum produced using clean energy sources,
prioritize recycling, and support companies committed to sustainable and responsible practices
in the production and transportation of aluminum.