Reactive Limestone Amendment
nounPronunciation: /riˈæktɪv ˈlaɪmˌstoʊn əˈmɛndmənt/
The application of crushed limestone (calcium carbonate) to acid-generating mine sites or AMD-affected areas to neutralize acidity and raise pH through chemical buffering reactions. The amendment's dissolution rate and calcium availability depend on particle size, purity, and contact duration with acidic water.
Plain English
Ground limestone added to mining sites to neutralize acidic water and raise pH toward neutral levels.
Etymology & History
Usage
"Reactive limestone amendment was applied to the mine drainage channel to neutralize acidity before the water reached the downstream watershed."
Style guide notes: Specify particle size and application rate when discussing effectiveness; use 'amendment' not 'additive' for environmental context.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
How does limestone amendment work?
Limestone dissolves in acidic water, releasing calcium ions that neutralize hydrogen ions and raise pH toward neutral range.
What particle size is most effective?
Fine crushed limestone (100-200 mesh) offers greater surface area for faster reaction, while coarser grades provide longer treatment duration.
Why Test Candidates on This?
Limestone amendments are tested in environmental remediation design and passive treatment system specification for mine reclamation.
Required skill level: Mid