Water quality changes in acid mine drainage streams in Gangneung, Korea, 10years after treatment with limestone

Moo Joon Shim, Byoung Young Choi, Giehyeon Lee, Yun Ho Hwang, Jung Seok Yang, Edward J. O'Loughlin, Man Jae Kwon

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

To determine the long-term effectiveness of the limestone treatment for acid mine drainage (AMD) in Gangneung, Korea, we investigated the elemental distribution in streams impacted by AMD and compared the results of previous studies before and approximately 10. years after the addition of limestone. Addition of limestone in 1999 leads to a pH increase in 2008, and with the exception of Ca, the elemental concentrations (e.g., Fe, Mn, Mg, Sr, Ni, Zn, S) in the streams decreased. The pH was 2.5-3 before the addition of limestone and remained stable at around 4.5-5 from 2008 to 2011, suggesting the reactivity of the added limestone was diminished and that an alternative approach is needed to increase the pH up to circumneutral range and maintain effective long-term treatment. To identify the processes causing the decrease in the elemental concentrations, we also examined the spatial (approximately 7. km) distribution over three different types of streams affected by the AMD. The elemental distribution was mainly controlled by physicochemical processes including redox reactions, dilution on mixing, and co-precipitation/adsorption with Fe (hydr)oxides.

Original languageEnglish
Pages (from-to)234-242
Number of pages9
JournalJournal of Geochemical Exploration
Volume159
DOIs
Publication statusPublished - 2015 Dec 1
Externally publishedYes

Fingerprint

Calcium Carbonate
acid mine drainage
Drainage
Water quality
limestone
water quality
Acids
Redox reactions
Coprecipitation
Oxides
Dilution
dilution
oxide
adsorption
Adsorption
distribution

Keywords

  • Acid mine drainage
  • Limestone treatment
  • Metals
  • Sulfate

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Economic Geology

Cite this

Water quality changes in acid mine drainage streams in Gangneung, Korea, 10years after treatment with limestone. / Shim, Moo Joon; Choi, Byoung Young; Lee, Giehyeon; Hwang, Yun Ho; Yang, Jung Seok; O'Loughlin, Edward J.; Kwon, Man Jae.

In: Journal of Geochemical Exploration, Vol. 159, 01.12.2015, p. 234-242.

Research output: Contribution to journalArticle

Shim, Moo Joon ; Choi, Byoung Young ; Lee, Giehyeon ; Hwang, Yun Ho ; Yang, Jung Seok ; O'Loughlin, Edward J. ; Kwon, Man Jae. / Water quality changes in acid mine drainage streams in Gangneung, Korea, 10years after treatment with limestone. In: Journal of Geochemical Exploration. 2015 ; Vol. 159. pp. 234-242.
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