Respuesta :
All these three are a long-term environmental consequence:
- The large amounts of toxic wastewater generated present treatment and disposal challenges.
- The generation of steam necessary to liberate the bitumen required burning a lot of natural gas, generating carbon dioxide emissions.
- Permanent scarring of the landscape resulted from digging out the oil sands.
What are oil sands?
Oil sands are a mixture of sand, water, and bitumen (oil that is too heavy or thick to flow on its own). Bitumen is so thick that it behaves similarly to cold molasses at room temperature. As a result, this resource is sometimes referred to as "tar sands," but that term is incorrect because bitumen and tar (asphalt) are distinct compounds. "Oil sands" correctly identifies the end product derived from bitumen: crude oil.
The oil sands of Canada are the world's largest crude oil deposit. The oil sands (or tar sands, as they are sometimes incorrectly referred to) are a mixture of sand, water, clay, and a type of oil known as bitumen. We can recover oil from the oil sands thanks to innovation and technology, ensuring energy security in the future.
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