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

Journal Article · · Journal of Geochemical Exploration
 [1];  [2];  [3];  [1];  [1];  [4];  [1]
  1. Korea Inst. of Science and Technology, Gangneung (South Korea)
  2. Korea Inst. of Geoscience and Mineral Resources, Daejeon (South Korea)
  3. Yonsei Univ., Seoul (South Korea). Earth System Sciences
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Biosciences Division

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. Lastly, the elemental distribution was mainly controlled by physicochemical processes including redox reactions, dilution on mixing, and co-precipitation/adsorption with Fe (hydr)oxides.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Korea Institute of Science and Technology (KIST); Korea Ministry of Environment; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1246366
Journal Information:
Journal of Geochemical Exploration, Vol. 159, Issue C; ISSN 0375-6742
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 30 works
Citation information provided by
Web of Science

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Cited By (6)

Identification of Acid Mine Drainage Potential Using Sentinel 2a Imagery and Field Data journal September 2019
Removal of antimony and arsenic from circum-neutral mine drainage in Poproč, Slovakia: a field treatment system using low-cost iron-based material journal July 2018
Dilution Processes of Rainfall-Enhanced Acid Mine Drainage Discharges from Historic Underground Coal Mines, New Zealand journal January 2020
Fe- and S-metabolizing microbial communities dominate an AMD-contaminated river ecosystem and play important roles in Fe and S cycling text January 2016
Hydrogeochemical features of surface water and groundwater contaminated with acid mine drainage (AMD) in coal mining areas: a case study in southern Brazil journal June 2016
Fe- and S-Metabolizing Microbial Communities Dominate an AMD-Contaminated River Ecosystem and Play Important Roles in Fe and S Cycling journal February 2017