Monday, January 31, 2011

60-Second Good-To-Knows 1-31-11

This week’s topic: Environmental Science

Acid rain:
Coal has sulfur in it. When rainwater runs through coal mines, pits, or tailings fields, the sulfur turns into sulfuric acid in the water. The effects are detrimental to nearby creeks and streams. If the sulfur escapes up the stack during burning, it acidifies the rain and lakes downstream. The problem can be ameliorated by use of “scrubbers” to remove 90% of SO2 from stack gases. They are now required on all new coal plants in US.

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