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http://dx.doi.org/10.9719/EEG.2019.52.1.29

Stabilization of Arsenic in Soil around the Abandoned Coal-Mine Using Mine Sludge Pellets  

Ko, Myoung-Soo (Department of Energy and Resources Engineering, Kangwon National University)
Ji, Won-Hyun (Institute of Mine Reclamation Technology, Mine Reclamation Corporation (MIRECO))
Kim, Young-Gwang (School of Earth Science and Environmental Engineering, Gwangju Institute of Science and Technology (GIST))
Park, Hyun-Sung (Institute of Mine Reclamation Technology, Mine Reclamation Corporation (MIRECO))
Publication Information
Economic and Environmental Geology / v.52, no.1, 2019 , pp. 29-35 More about this Journal
Abstract
The purpose of this study was to assess the applicability of acid mine drainage sludge (AMDS) pellets for the arsenic (As) stabilization and to suggest an evaluation method for arsenic stabilization efficiency in soil around abandoned coal mines. The soil samples were collected from the agricultural field around Ham-Tae, Dong-Won, Dong-Hae, and Ok-Dong coal mine. The As concentration in soil was exceeding the criteria of soil pollution level, except for Ham-Tae coal mine. The AMDS pellets are more appropriate to use by reducing dust occurrence during the transport and application process than AMDS powder. In addition, AMDS pellets were maintained the As stabilization efficiency. The application of AMDS pellets for the As stabilization in soil was assessed by column experiments. The AMDS pellets were more effective than limestone and steel slag, which used as the conventional additives for the stabilization process. The As extraction by $0.43M\;HNO_3$ or $1M\;NaH_2PO_4$ solution were appropriate evaluation methods for evaluation of As stabilization efficiency in the soil.
Keywords
abandoned coal mine; stabilization; arsenic; acid mine drainage sludge pellet; evaluation methods;
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Times Cited By KSCI : 1  (Citation Analysis)
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