gs1medium
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 & Explanation
Correct answer: C. All three
Enhanced rock weathering involves spreading crushed silicate rocks like basalt on land to accelerate the natural process of CO2 absorption. Ocean alkalinity enhancement aims to increase the ocean's capacity to absorb atmospheric CO2 by adding alkaline substances. Carbon Capture and Storage (CCS) technologies capture CO2 from industrial sources and store it underground, often in depleted oil and gas reservoirs or saline aquifers, sometimes as carbonated water. All three methods are recognized approaches to carbon capture and sequestration.
Source: UPSC gs1 2023