Consider the following activities:
1. Spreading finely ground basalt rock on farmlands extensively
2. Increasing the alkalinity of oceans by adding lime
3. Capturing carbon dioxide released by various industries and pumping it into abandoned subterranean mines in the form of carbonated waters
How many of the above activities are often considered and discussed for carbon capture and sequestration?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: C
The correct answer is (c). All three of the activities listed are often considered and discussed for carbon capture and sequestration.
- Spreading finely ground basalt rock on farmlands extensively: Basalt is a type of volcanic rock that is rich in minerals, including calcium and magnesium. These minerals can react with carbon dioxide in the air to form carbonates, which are then stored in the soil. This process can help to remove carbon dioxide from the atmosphere and improve the fertility of the soil.
- Increasing the alkalinity of oceans by adding lime: Lime is a substance that is made from limestone, which is a type of rock that is rich in calcium carbonate. When lime is added to the ocean, it reacts with carbon dioxide to form more calcium carbonate. This process can help to remove carbon dioxide from the atmosphere and make the ocean more alkaline, which can help to protect marine life.
- Capturing carbon dioxide released by various industries and pumping it into abandoned subterranean mines in the form of carbonated waters: This process involves capturing carbon dioxide from the emissions of power plants and other industrial facilities and then injecting it into deep underground geological formations. The carbon dioxide is then stored in the form of a liquid or gas. This process can help to reduce the amount of carbon dioxide that is released into the atmosphere.
