Q. Why is there a concern about copper smelting plants?
1.They may release lethal quantities of carbon monoxide into environment.
2.The copper slag can cause the leaching of some heavy metals into environment.
3.They may release sulphur dioxide as a pollutant.
Select the correct answer using the code given below.
a) 1 and 2 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
Correct Answer: b) 2 and 3 only
Question from UPSC Prelims 2021 GS Paper
Explanation :
Environmental Concerns of Copper Smelting Plants
While copper smelting plants are essential for metal production, they come with significant environmental concerns. One of the misconceptions is that they may release lethal quantities of carbon monoxide into the environment; however, the primary issue is not carbon monoxide but other pollutants.
Heavy Metal Leaching from Copper Slag
A valid concern is that copper slag, a byproduct of the smelting process, can lead to the leaching of heavy metals into the environment. Metals such as lead, arsenic, and cadmium found in slag can pose serious environmental and health risks when they enter soil and water systems.
Sulfur Dioxide Emissions
Another significant issue is the release of sulfur dioxide (SO2) during the smelting process. As copper sulfide ores are heated, sulfur is emitted as SO2, a pollutant that contributes to acid rain and respiratory problems, among other environmental hazards.
