Limestone Neutralization
nounPronunciation: /ˈlaɪm.stoʊn ˌnjuː.trə.lɪˈzeɪ.ʃən/
The application of limestone or other alkaline materials to acidic mine sites to raise pH and neutralize hydrogen ions produced by sulfide oxidation. This passive or active treatment method can be applied as a powder, in slurries, or through constructed alkaline drainage systems to stabilize water chemistry.
Plain English
Adding limestone to acidic mine sites to make the water less acidic and reduce heavy metal toxicity.
Etymology & History
Usage
"Limestone neutralization reduced the pH of discharge from 3.2 to 6.5, allowing iron hydroxides to precipitate and settle."
Style guide notes: Specify limestone application method (powder, slurry, or constructed system) when describing neutralization approaches in reports.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
How much limestone is needed to neutralize abandoned mine drainage?
Limestone requirements depend on acidity levels and target pH; typically determined through laboratory titration tests and field monitoring.
What are advantages of limestone over other neutralization methods?
Limestone is inexpensive, widely available, creates minimal secondary waste, and can provide long-term buffering capacity when properly applied.
Why Test Candidates on This?
Fundamental knowledge for understanding basic mine remediation chemistry and treatment selection for acidic sites.
Required skill level: Junior