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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Soil and Groundwater Environment
Journal Basic Information
Journal DOI :
Korean Society of Soil and Groundwater Environment
Editor in Chief :
Volume & Issues
Volume 20, Issue 7 - Dec 2015
Volume 20, Issue 6 - Nov 2015
Volume 20, Issue 5 - Oct 2015
Volume 20, Issue 4 - Aug 2015
Volume 20, Issue 3 - Jun 2015
Volume 20, Issue 2 - Apr 2015
Volume 20, Issue 1 - Feb 2015
Selecting the target year
A Study on Possibility of Bio-coal Manufacturing using High Moisture Agricultural by- Products
Kim, Min-Jung ; Park, Kyoung-Joo ; Lee, Jai-Young ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 1~6
DOI : 10.7857/JSGE.2015.20.3.001
The rapid industrial development is facing problem due to energy depletion in Korea. So that, it can be necessary to develop alternative energy sources. Alternative energy like biofuels can be produced by using waste fuel, which is ecofriendly. As we know, the organic waste was banned to dump in landfill and ocean dumping. The most practicable method usually used to reduce organic waste is getting feedstuff or composting, considering the discharge characteristics of agricultural by-products waste treatment were selected. In this study, bio-coal was made using agriculture by product. Biocoal was prepared by adding 50 g of uniformly mixture into reactor and was carbonized at low temperatures 210, 220, and 230℃. The time of reaction was 1, 2 and 3 hours. Bio-coal approximately was similar to the standard of solid fuels. Other characteristics of fuel were also studied. The experiments which were analyzed were moisture content and calorific value, ash, chlorine, sulfur and heavy metals analysis as mercury, cadmium, lead, arsenic, and chromium. As a result, bio-coal 220℃, 2 hours was the optimal conditions while heating.
Comparison of Land Farming and Chemical Oxidation based on Environmental Footprint Analysis
Kim, Yun-Soo ; Lim, Hyung-Suk ; Park, Jae-Woo ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 7~14
DOI : 10.7857/JSGE.2015.20.3.007
In this study, land farming and chemical oxidation of a diesel-contaminated site is compared to evaluate the environmental impact during soil remediation using the Spreadsheet for Environmental Footprint Analysis by U.S. EPA. Each remediation process is divided into four phases, consisting of soil excavation, backfill and transportation (Phase 0), construction of remediation facility (Phase 1), remediation operation (Phase 2), and restoration of site and waste disposal (Phase 3). Environmental footprints, such as material use, energy consumption, air emission, water use and waste generation, are analyzed to find the way to minimize the environmental impact. In material use and waste generation, land farming has more environmental effect than chemical oxidation due to the concrete and backfill material used to construct land farming facility in Phase 1. Also, in energy use, land farming use about six times more energy than chemical oxidation because of cement production and fuel use of heavy machinery, such as backhoe and truck. However, carbon dioxide, commonly considered as important factor of environmental impact due to global warming effect, is emitted more in chemical oxidation because of hydrogen peroxide production. Water use of chemical oxidation is also 2.1 times higher than land farming.
A Comparative study of Assessment Techniques for Soil Ecosystem Health: Focusing on Assessment Factors of Soil Health
Chae, Yooeun ; Kim, Shin Woong ; Kwak, Jin Il ; Yoon, Youngdae ; Jeong, Seung-Woo ; An, Youn-Joo ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 15~24
DOI : 10.7857/JSGE.2015.20.3.015
The soil ecosystem is a complex system performing particularly complicated and varied functions, such as providing a habitat for organisms, acting as a medium for plant cultivation and growth, and functioning as a buffer against external materials in the environment. To assess whether these important functions of the soil ecosystem are executed appropriately, the concept of soil ecosystem health has been introduced, which is defined as the ability to perform the specific functions of the soil ecosystem. Understanding soil properties and soil indicators related to soil functions is essential to assess the soil health. In this study, systems, the indicators, and evaluation factors for assessing soil ecosystem health employed in a number of countries were investigated and discussed. In particular, it is necessary to introduce a technique for the evaluation of soil ecosystem health in Korea and to develop techniques and indicators appropriate to the soil ecosystem and status in Korea.
Investigation of Synthesis and Antibacterial Properties of a Magnetically Reusable Fe
Shim, Jaehong ; Kim, Hea-Won ; Kim, Jin-Won ; Seo, Young-Seok ; Oh, Sae-Gang ; Cho, Min ; Park, Junghee ; Oh, Byung-Taek ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 25~33
DOI : 10.7857/JSGE.2015.20.3.025
In this study, Fe
-ACCS-Ag nanoparticles (NPs) were successfully synthesized using silica extracted from corn cob ash. The synthesized Fe
-ACCS-Ag NPs were characterized using X-ray diffraction (XRD), scanning electron microscopyenergy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM) and fourier transform infrared spectroscopy (FTIR). In addition, the potential application of Fe
-ACCS-Ag NPs as an antibacterial material in water disinfection was investigated using Escherichia coli ATCC 8739 as model bacteria. The antibacterial activity of synthesized composite material showed 99.9% antibacterial effect within 20 min for the tested bacteria. From this experiment, the synthesized Fe
-ACCS-Ag nanocomposites also hold magnetic properties and could be easily recovered from the water solution for its reuse. The reused nanocomposites presented the decreasing antibacterial efficiencies with the reuse cycle but the composite used three times still killed 90% of bacteria in 20 min.
A Review on the Application of Stable Water Vapor Isotope Data to the Water Cycle Interpretation
Lee, Jeonghoon ; Han, Yeongcheol ; Koh, Dong-Chan ; Kim, Songyi ; Na, Un-Sung ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 34~40
DOI : 10.7857/JSGE.2015.20.3.034
Studies using stable water vapor isotopes have been recently conducted over the past two decades because of difficulties in analysis and sample collection in the past. Stable water vapor isotope data provide information of the moisture transport from ocean to continent, which are also used to validate an isotope enabled general circulation model for paleoclimate reconstructions. The isotopic compositions of groundwater and water vapor also provide a clue to how moisture moves from soil to atmosphere by evapotranspiration. International Atomic Energy Agency designates the stations over the world to observe the water vapor isotopes. To analyze the water vapor isotopes, a cryogenic sampling method has been used over the past two decades. Recently, two types of laser-based spectroscopy have been developed and remotely sensed data from satellites have the global coverage. In this review, measurements of isotopic compositions of water vapor will be introduced and some studies using the water vapor isotopes will also be introduced. Finally, we will suggest the future study in Korea.
Regional Groundwater Flow Characteristics due to the Subway System in Seoul, Korea
Shin, Esther ; Kim, Hyoung-Soo ; Ha, Kyoochul ; Yoon, Heesung ; Lee, Eunhee ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 41~50
DOI : 10.7857/JSGE.2015.20.3.041
Hydrogeologic environment of the Mega City such as Seoul, suffers from rapid changes caused by urbanization, construction of underground subway or buildings, and contaminant loading by diverse anthropogenic activities. Understanding the present condition of groundwater environment and water budget is necessary to prevent natural and manmade disasters and to prepare for sustainable water resource management of urban environment. In this study, regional groundwater flow and water budget status of Seoul was analyzed using numerical simulation. Modeling result indicated that groundwater level distribution of Seoul generally followed the topography, but the significant decreases in groundwater level were observed around the subway network. Steady-state water balance analysis showed groundwater recharge by rainfall and leakage from the water supply network was about 550,495 m
/day. Surface water inflow and baseflow rate via Han River and major streams accounted for 799,689 m
/day and 1,103,906 m
/day, respectively. Groundwater usage was 60,945 m
/day, and the total groundwater leakage along the subway lines amounted to 114,746 m
/day. Modeling results revealed that the subway could decrease net groundwater baseflow by 40%. Our study result demonstrated that the subway system can have a significant influence on the groundwater environment of Seoul.
A Development of Markov Chain Monte Carlo History Matching Technique for Subsurface Characterization
Jeong, Jina ; Park, Eungyu ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 51~64
DOI : 10.7857/JSGE.2015.20.3.051
In the present study, we develop two history matching techniques based on Markov chain Monte Carlo method where radial basis function and Gaussian distribution generated by unconditional geostatistical simulation are employed as the random walk transition kernels. The Bayesian inverse methods for aquifer characterization as the developed models can be effectively applied to the condition even when the targeted information such as hydraulic conductivity is absent and there are transient hydraulic head records due to imposed stress at observation wells. The model which uses unconditional simulation as random walk transition kernel has advantage in that spatial statistics can be directly associated with the predictions. The model using radial basis function network shares the same advantages as the model with unconditional simulation, yet the radial basis function network based the model does not require external geostatistical techniques. Also, by employing radial basis function as transition kernel, multi-scale nested structures can be rigorously addressed. In the validations of the developed models, the overall predictabilities of both models are sound by showing high correlation coefficient between the reference and the predicted. In terms of the model performance, the model with radial basis function network has higher error reduction rate and computational efficiency than with unconditional geostatistical simulation.
Geochemical Investigation of Fluoride Migration in the Soil Affected by an Accidental Hydrofluoric Acid Leakage
Kwon, Eunhye ; Lee, Hyun A ; Kim, Doyoung ; Lee, Junseok ; Lee, Sanghoon ; Yoon, Hye-On ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 65~73
DOI : 10.7857/JSGE.2015.20.3.065
The hydrofluoric acid (HF) leakage accident occurred on September 2012 in Gumi, Korea affected the surrounding soils and plants. In this study, we investigated fluoride migration in Gumi area through geochemical properties of soil-liquid phase (pore water F and water-soluble F). The concentrations of porewater F and water-soluble F were obtained from N.D (Not detected) to 9.79 mg/L and from 0.001 to 21.4 mg/L, respectively. F in pore water seemed to be affected by artificial and natural origin, and PHREEQC results implied that fluorite is F control factor. F concentrations of soil and soil-liquid phase did not exceed concern level of regulatory criteria and showed similar trends compared by previous studies. Therefore, F contents remained in the soil and soil-liquid phase were considered to be not affected by HF leakage accident.
A Method to Filter Out the Effect of River Stage Fluctuations using Time Series Model for Forecasting Groundwater Level and its Application to Groundwater Recharge Estimation
Yoon, Heesung ; Park, Eungyu ; Kim, Gyoo-Bum ; Ha, Kyoochul ; Yoon, Pilsun ; Lee, Seung-Hyun ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 74~82
DOI : 10.7857/JSGE.2015.20.3.074
A method to filter out the effect of river stage fluctuations on groundwater level was designed using an artificial neural network-based time series model of groundwater level prediction. The designed method was applied to daily groundwater level data near the Gangjeong-Koryeong Barrage in the Nakdong river. Direct prediction time series models were successfully developed for both cases of before and after the barrage construction using past measurement data of rainfall, river stage, and groundwater level as inputs. The correlation coefficient values between observed and predicted data were over 0.97. Using the time series models the effect of river stage on groundwater level data was filtered out by setting a constant value for river stage inputs. The filtered data were applied to the hybrid water table fluctuation method in order to estimate the groundwater recharge. The calculated ratios of groundwater recharge to precipitation before and after the barrage construction were 11.0% and 4.3%, respectively. It is expected that the proposed method can be a useful tool for groundwater level prediction and recharge estimation in the riverside area.
Analysis of Soil Properties and Microbial Communities for Mine Soil Vegetation
Park, Min-Jeong ; Yoon, Min-Ho ; Nam, In-Hyun ;
Journal of Soil and Groundwater Environment, volume 20, issue 3, 2015, Pages 83~91
DOI : 10.7857/JSGE.2015.20.3.083
Mine soil contamination by high levels of metal ions that prevents the successful vegetation poses a serious problem. In the study presented here, we used the microbial biocatalyst of urease producing bacterium Sporosarcina pasteurii or plant extract based BioNeutro-GEM (BNG) agent. The ability of the biocatalysts to bioremediate contaminated soil from abandoned mine was examined by solid-state composting vegetation under field conditions. Treatment of mine soil with the 2 biocatalysts for 5 months resulted in pH increase and electric conductivity reduction compared to untreated control. Further analyses revealed that the microbial catalysts also promoted the root and shoot growth to the untreated control during the vegetation treatments. After the Sporosarcina pasteurii or plant extract based BNG treatment, the microbial community change was monitored by culture-independent pyrosequencing. These results demonstrate that the microbial biocatalysts could potentially be used in the soil bioremediation from mine-impacted area.