Q. Consider the following activities :
1. Spreading finely ground best rock on farmlands extensively
2. Increasing the alkalinity of by adding lime
3. Capturing carbon dioxide released by various industries and pumping 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?
Exp) Option c is the correct answer.
Statement 1 is correct- Spreading finely ground basalt rock on farmlands extensively: This activity, known as enhanced weathering, involves spreading finely ground basalt rock on farmlands to accelerate the natural process of carbon dioxide capture from the atmosphere. The basalt reacts with carbon dioxide to form stable carbonates, effectively storing carbon.
Statement 2 is correct- Increasing the alkalinity of oceans by adding lime: This approach, known as ocean alkalinity enhancement, involves adding lime (calcium oxide or calcium hydroxide) to the oceans to increase their alkalinity. This process enhances the capacity of the oceans to absorb and store carbon dioxide from the atmosphere, thereby aiding in carbon sequestration.
Statement 3 is correct- Capturing carbon dioxide released by various industries and pumping it into abandoned subterranean mines in the form of carbonated waters: This activity refers to carbon capture and storage (CCS), where carbon dioxide emissions from industrial processes are captured and stored underground. Abandoned subterranean mines can serve as suitable storage sites, with the captured carbon dioxide pumped into these locations in the form of carbonated waters.
Source: Shankar IAS
Subject) Geography & Environment
