• The Korean Journal of Ecology
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• v.15 no.2
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• pp.173-180
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• 1992

Pb, Zn tolerance of phaseolus multiflorus was investigated, based on the elongation of root and stem, pollen Germination and progeny quality in various pb, zn concentrations. The result obtained by water culture showed that the growth of roots and steams of phaseolus multiflorus from pb-zn mine site is less inhivited than that of the control site. The flower of phaseolus multiflorus from which pollen was taken were grown without added pb, zn and percent germination of pollen observed in a range of pb, zn concentrations. The percent germination of pollen from pb-zn mine site was higher than the control site. phaseolus multiflorus collected at a pb-zn mine site and the control site was site were grown at different pb, zn concentrations, its progeny was retreated with same concentrations of pb-zn mine site was more vigorous than the control site. thus, pb-zn tolerance was able to expressed in both pollen and sporophytes.

• Economic and Environmental Geology
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• v.32 no.1
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• pp.73-82
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• 1999

The objectives of this study are to investigate soil contamination in the vicinity of abandoned Au-Ag mine and to apply a remediation technique of liming to tailings. In the study area of the Imcheon Au-Ag mine, soils were sampled in and around the mine the analyzed by Atomic Absorption Spectrometry extracted by both 0.1N HCl and aqua regia. Elevated levels of Cd, Cu, Pb and Zn concentrations extracted by 0.1N HCl were found in soils taken from tailings site. These high contents directly influenced metal concentrations in soils taken in the vicinity of the site. This is mainly due to clastic movement by wind and effluent of mine waste water. In addition, relatively enriched concentrations of the metals were found in soils extrated by aqua regia due to strong decomposition of the samples compared with 0.1N HCl extration. According to the statistical approach, metal concentrations in soils by 0.1N HCl had a positive correlation with those by aqua regia extraction. Mine waste waters and stream waters were also sampled around the mine in spring and summer and analyzed by AAS for Cd, Cu, Pb and Zn, and by Ion Chromatography for anions. Like soils developed over tailings, significant levels of metals and sulphates were found in the mine waste waters ranging of 0.2~0.3, 0.5~2.0, 0.2~2.8, 30~50 and 1,240~4,700 mg/l of Cd, Cu, Pb, Zn and $SO_4^{2-}$, respectively. These elevated levels influenced in the stream waters in the vicinity of the tailings site. In seasonal variation of metal and anion contents, relatively high levels were found in waters sampled on summer due to leaching the metals and anions from tailings by rain. This study also examined the possibility of lime treatment for remediation of acid mine tailings and assumed to be 46 tones of pulverized lime for neutralization of the tailings.

• Journal of the Korean Professional Engineers Association
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• v.19 no.4
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• pp.11-21
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• 1986

Mine drainage from coal mines is mostly acidic, polluted and/or contaminated, even if its quantity has increased substantially during recent days. This causes two kinds of problems arising at mining districts; one is the environmental disruption and the other is insufficient water supply for living, employee's bathing and industrial purposes. In order to mitigate the aforementioned problems, a specific equipment of Korea type for mine drainage purification has been developed and its prototype manufactured, followed by its applicability tests implemented at mine site. The results of the tests indicates that the new equipment developed is much lower than and economical compared to, other existing neutralization facilities at home and abroad in capital investment at installation stage, the consumption of neutralizing chemicals at operation stage and the requirements of installation site. Whangji area where the prototype water treatment equipment is installed has been sustaining a short supply of usable water, especially in dry seasons and supplementing about 40㎥ of water brought from a location farther than 4km in distance to meet water requirements. The prototype water treatment equipment is however considered capable of providing compressor cooling water in sufficient amount from winter season In the future.

• Korean Journal of Environmental Biology
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• v.32 no.2
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• pp.102-111
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• 2014

Ecological restoration is regarded as a major strategy for preventing biodiversity loss and thereby enhancing ecosystem service. This study was performed to evaluate ecosystem service value that the restored ecosystem provides. Ecosystem service was evaluated for provisioning and regulating services. The former service was evaluated by comparing similarities in a viewpoint of floristic composition to the reference site between the restored and the unrestored sites. Species composition of the restored site was found to be more similar to the reference site than that of the unrestored site and thereby restoration practice contributed for enhancing the provisioning service. Regulating service was evaluated based on microclimate control, soil amelioration, and improvement of water holding capacity. The value of ecosystem services in terms of microclimate control, soil amelioration, and improvement of water holding capacity was higher in the restored site than in the unrestored site. In consequence, ecological restoration of coal mine spoils contributed for enhancing the ecosystem service value of the corresponding site and thereby is rewarding the cost invested for restoration.

• Spatial Information Research
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• v.10 no.1
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• pp.123-138
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• 2002

The Abandoned Mine Geographic Information System(GIS) should be established in order to prevent and restore mine damages and to revitalize the economy in abandoned mine regions. The purpose of this paper is to develop and propose a pilot system and the Abandoned Mine GIS. The basic concept for the establishment of the Abandoned Mine GIS is embodied through case studies of various countries. Gosari region in Samcheok City is selected as a sample site for a pilot system. Through construction and operation of the pilot system, a rational method and some difficulties are identified. Based on tole result of the pilot system, directions and schedules for the establishment of the Abandoned Mine GIS are presented.

• Economic and Environmental Geology
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• v.36 no.1
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• pp.17-25
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• 2003

Researches were carried out to investigate the characteristics and concentration of heavy metal elements of stream water through Dongmyoung abandoned metal mine and soil adjacent to the mine. The pH range of water was 5.9∼7.1 that implies the water environment was acidic to neutral. The contents and distribution aspects of heavy metals in water samples varied with geochemical characteristics of element, but the concentration of heavy metals has the tendency of increase closer to the mine in general. The results of soil analysis show that total heavy metal concentration of agricultural soil near mine was far lower than those of ore tailing and dumping site. Therefore, the effects of the abandoned mine on stream water and agricultural products were supposed to be insignificant, particularly because the portion of absorbed carbonates and reducible fractions among total heavy metal concentration was relatively lower than the other. Since, however total heavy metal concentrations of mining site were relatively higher than those of adjacent region, there is a possibility of heavy metal difussion when the chemical environment of the site changes due to migration of surface and underground water. It is suggested that the preventive measures for water and soil pollution by the heavy metals would be considered around the region.

• Journal of the Korean earth science society
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• v.34 no.6
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• pp.575-587
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• 2013

DC electrical and electromagnetic survey was applied to evaluate the reserve of an iron mine site. We analyzed the borehole cores and the cores sampled from outcrops in order to decide which geophysical method was efficient for the evaluation of iron mine site and to understand the geological setting around the target area. Based on the core tests for specific weight, density, porosity, resistivity and P-wave velocity, showing that the magnetite could be distinguishable by the electrical property, we decided to conduct the electrical survey to investigate the irone mine site. According to previous studies, the DC electrical survey was known to have various arrays with high resolutions effective to the survey of the iron mine site. However it was also known that the skin depth is too shallow to grasp the deep structure of iron mine. To compensate the weakness of the DC electrical method, we applied the MagnetoTelluric (MT) survey. In addition, a Controlled Source MT (CSMT) method was also applied to make up the shortcoming of MT method which is weak for shallow targets. From the DC electrical and MT survey, we found a new low resistivity zone, which is believed to be a magnetite reserve beneath the old abandoned mine. Therefore, this study was confirmed for additional utility value.

• Korean Journal of Environmental Biology
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• v.29 no.4
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• pp.265-273
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• 2011

Bacterial diversity based on the denaturing gradient gel electrophoresis (DGGE) analysis of PCR-amplified 16S rRNA gene sequences was determined for soil samples from two abandoned mine sites and the corresponding enrichment cultures using soil sample as key inoculum. Sequencing analysis of DGGE bands obtained from both the soil samples matched mostly with sequences of uncultured and newly described organisms, or organisms recently associated with the acid mine drainage environment. However, the enrichment of soil samples in ferrous sulfate and elemental sulfur media yielded sequences that were consistent with well-known iron- and sulfur-oxidizing acidophilic bacteria. Analysis of enrichment cultures of soil samples from Dalsung mine revealed abundant ${\gamma}$-$Proteobacteria$, whereas that of Gubong mine sample displayed acidophilic groups of ${\gamma}$-$Proteobacteria$, ${\alpha}$-$Proteobacteria$, $Actinobacteria$ and $Firmicutes$. Chemical elemental analysis of the mine samples indicated that the Dalsung site contained more iron and sulfate along with other toxic components as compared with those of the Gubong site. Biogeochemistry was believed to be the primary control on the acidophilic bacterial group in the enrichment samples.

• Korean Journal of Environment and Ecology
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• v.24 no.3
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• pp.279-285
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• 2010

This study was conducted to evaluate the differences between the heavy metal contaminated and non-contaminated Artemisia princeps var. orientalis and Equisetum arvense in litter decomposition processes. The plant samples were collected from abandoned mine tailings and control sites in Cheongyang, South Korea. The abandoned mine tailings have high heavy metal concentration and low soil organic matter contents. The heavy metal contents of mine tailings were about 13 and 28 times higher in As and Cd, compared to those in control soils. Also, the contents of the Cr, Ni and Zn in mine tailings were about 3 to 6 times higher than those in control soil. Samples of two plant species from mine tailings have high heavy metal concentrations compared to those from control sites. The leaf of A. princeps var. orientalis and shoot of E. arvense collected from mine tailings have approximately 23 and 58 times more in As, and 25 and 11 times more in Cd. The mass loss rates of plant litter from mine tailings were slower than those from control sites. During the experimental period, the decomposition of A. princeps var. orientalis leaf from mine tailings and control site showed 50.4% and 65.7% mass loss on the control soil area, respectively. The decomposition of A princeps var. orientalis leaf from mine tailings and control site showed 31.6% and 57.5% mass loss on the mine tailings area, respectively. The decomposition of A. princeps var. orientalis stem from mine tailings and control site showed similar patterns with their leaf decomposition. The decomposition of E. arvense shoot from mine tailings and control site showed 77.8% and 89.3% mass loss on the control soil area, respectively. The decomposition of E. arvense shoot from mine tailings and control site showed 67.6% and 82.1% mass loss on the mine tailings area, respectively. Therefor, the higher contents of heavy metals showed slow decomposition. The results suggested that heavy metal contamination affected the plant litter decomposition processes.

• Korean Journal of Soil Science and Fertilizer
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• v.49 no.5
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• pp.627-634
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• 2016

The objectives of this study were to select optimal soil amendments through analysis of heavy metal availability in soil and uptake to Aster koraiensis Nakai for forest rehabilitation of heavy metal contaminated soil of abandoned metal mine. A. koraiensis was cultivated for 6 months at contaminated soil with several soil treatments (bottom ash 1 and 2%, fly ash 1 and 2%, waste lime+oyster 1 and 2%, Acid mine drainage sludge (AMDS) 10 and 20%, compost 3.4%, non-contaminated natural forest soil, and control). The analysis results of heavy metal concentrations in the soil by Mehlich-3 mehthod, growth and heavy metal concentrations of A. koraiensis showed that waste oyster+lime 1% and compost were more effective than the other amendments for phytostabilization. However, it is needed comprehensive review of factors such as on-site condition, slope covering to reduce soil erosion and vegetation introduction from surround forest for revegetation to apply forest rehabilitation.