• Proceedings of the Korean Geotechical Society Conference
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• 2008.03a
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• pp.1030-1035
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• 2008

Dynamic numerical analyses were performed to investigate the response of liquefaction remediation of rammed aggregate piers(RAP) on soft ground under free strain conditions. The safe factors of the soft ground reinforced by RAP during seismic loading of magnitude 6.5 were calculated. The results of simulation showed that factors of safety were affected various area replacement ratios, surcharge loads and depth of RAP systems.

• Journal of Soil and Groundwater Environment
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• v.17 no.5
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• pp.75-81
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• 2012

In this study, remediation of heavy metal contaminated soil was attempted by the electrokinetic process equipped with fixed or swappable electrode. Copper was more effectively removed with EDTA than citric acid. Zinc was much more removed than copper with both detergents. When electrokinetic with fixed electrode and detergents were applied to the contaminated soil, copper was removed about 28.52%~35.25% and zinc was removed about 63.44%~71.48%. When electrokinetics with swappable electrode and detergents were applied to the contaminated soil, the pseudo-first order reaction constants was higher about 16~50% than with fixed electrode in the case of zinc. It is conclusive that electrokinetics with swappable electrode could be an effective method for the remediation of heavy metal contaminated soil.

• Journal of Soil and Groundwater Environment
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• v.17 no.4
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• pp.73-80
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• 2012

The objectives of this research were to study the applicability and limitations of permeable reactive barrier (PRB) for the removal of tetrachloroethylene (PCE) from the groundwater. PRB column tests were conducted using reactive material with Moringa Oleifera Mass - Bentonite (Mom-Bentonite). Most of the PCE in the groundwater was degraded and/or captured (sorpted) in the zone containing activated material (MOM-Bentonite). The removal rate of PCE from the groundwater was 90% and 75% after 30 days and 180 days, respectively. The effect of micro-organisms on the long-term permeability and reactivity of the barrier is not well understood. MOM-Bentonite PRB system in this research has the potential to be developed into an environmentally and economically acceptable technology for the in situ remediation of PCE-contaminated groundwater.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.521-526
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• 2008

The cinema of the digital age remediates digital media not only its technology but also its storytelling, image and even its way of thinking. This paper examines the spatial storytelling of cinema in digital age. In order to analyze the remediation aspects, this research applies and reconstructs the concepts of 'spatial stories' of Michel de Ceteau.

• Journal of the Korean Society for Marine Environment & Energy
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• v.17 no.1
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• pp.1-7
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• 2014

This paper aims to explain the safety assessment and remediation mechanism of Granulated Coal Ash (GCA) as a material for the remediation of coastal sediments and to evaluate the improvement of the sediment in Kaita Bay, where GCA was applied. The concentrations of heavy metal contained in GCA and the dissolved amounts of heavy metal from GCA satisfied the criteria for soil and water pollution in Japan. The mechanisms on the remediation of coastal sediments using GCA is summarized as follows; (1) removal of phosphate and hydrogen sulfide (2) neutralization of acidic sediment (3) oxidation of reductive sediment (4) increase of water permeability (5) increase of soil strength (6) material for a base of seagrass. From the results obtained from the field experiment carried out in Kaita Bay, it was clarified that GCA is a promizing material for remediation of coastal sediment. This remediation technology can contribute to promote waste reduction in society and to decrease cost of coastal sediment remediation by applying GCA in other polluted coastal areas.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2002.09a
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• pp.210-214
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• 2002

In this study, the coupled effect of electrokinetic and ultrasonic remediation technology was investigated for removing of heavy metal and organic matter at the same time. The laboratory tests were conducted using specially designed and fabricated electrokinetic and ultrasonic devices. The electrokinetic technique was applied to remove mainly the heavy metal and the ultrasonic technique was applied to remove mainly organic substance in contaminated soil. Diesel fuel and Cd were used as a surrogate contaminant for this test. A series of laboratory experiments involving electrokinetic and electrokinetic+ultrasonic flushing test were carried out. An increase in permeability and contaminant removal rate was observed in electrokinetic+ultrasonic flushing test.

• Journal of Soil and Groundwater Environment
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• v.15 no.2
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• pp.34-39
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• 2010

In this study, the remediation of diesel contaminated soil was attempted with ozone treatment and Fenton reaction. About 10% of initial diesel concentration was removed by the ozone saturated solution. The pseudo-first order decomposition constant of diesel contaminated soil in the presence of 5% of hydrogen peroxide with 1.82, 2.82, 4.82, 6.82, and 11.82% of iron contents was 0.0228, 0.0308, 0.0482, 0.0471, and 0.0592 $min^{-1}$ respectively. The decomposition constant of the diesel was 0.0064 $min^{-1}$ with the addition of ozone saturated solution only. On the addition of ozone saturated solution in the presence of 5% hydrogen peroxide and 5% iron, the decomposition constant of the diesel was 0.0850 $min^{-1}$. These results indicated that the decomposition rate was 190% faster than without the addition of ozone saturated solution. Thus, the application of both ozone and the fenton reaction is promising for the remediation of the diesel contaminated soil.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2005.10a
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• pp.207-209
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• 2005

• Korean Journal of Soil Science and Fertilizer
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• v.48 no.2
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• pp.138-145
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• 2015

Heavy metal pollution in agricultural field near the abandoned metal mines is a critical problem in Korea. General remediation technique is to apply chemical amendments and soil covering. However, there is no specific guidelines for conducting soil covering. Therefore, main objective of this research was to determine optimum soil covering technique with microcosm experiment. Three different chemical amendments, lime stone (LS), steel slag (SS), and acid mine drainage sludge (AMDS), were examined and varied soil covering depth, 20, 30, 40cm, was applied to determine optimum remediation technique. Bioavailable heavy metal concentration in soil and total concentration of heavy metals in crop were monitored. Result showed that average heavy metal concentration in varied soil covering depth was ordered as 40 cm ($14.5mg\;kg^{-1}$) < 20 cm ($14.6mg\;kg^{-1}$) < 30 cm ($16.0mg\;kg^{-1}$) and also heavy metal concentration in crop was ordered as 40 cm ($100{\mu}g\;kg^{-1}$) < 30 cm ($183{\mu}g\;kg^{-1}$) < 20 cm ($190{\mu}g\;kg^{-1}$). In terms of chemical amendments, average heavy metal concentration was decreased as AMDS ($150{\mu}g\;kg^{-1}$) < SS ($151{\mu}g\;kg^{-1}$) < LS ($154{\mu}g\;kg^{-1}$). Overall, depth of soil covering should be over 30 cm to minimize bioaccumulation of heavy metals and SS and LS could be applied in heavy metal contaminated soil for remediation purposes.

• The Journal of the Korea Contents Association
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• v.12 no.1
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• pp.225-233
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• 2012

This study is focused on the relationship of old and new media with the concept of cultural interface. This study try to find out their similarities and differences of media contents and interface through contents analysis of text. As a results, there are competible coexistance of transparent immediacy and hypermediacy as a double logic of remediation. And the features of remediation that borrowing, aggressive, and absorb are showed cross each other. A related studies are focused on the narrative structure of story and on analysis of character, events, and background. And the other studies are focused on the policy of new media distribution. But, recent new media emphasizes the visualization of 3D technology and that strategy. Also they tries to convert a various media contents. Therefore, it is important to check and prepare those environmental changes of media. Then, more researches will be applied to remediation and cultural interface of this study. And I hope that they will be find an alternative strategy of contents and interface on media.