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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 11, Issue 6 - Dec 2006
Volume 11, Issue 5 - Oct 2006
Volume 11, Issue 4 - Aug 2006
Volume 11, Issue 3 - Jun 2006
Volume 11, Issue 2 - Apr 2006
Volume 11, Issue 1 - Feb 2006
Selecting the target year
Laboratory Study on the Removal of Heavy Metals Using Apatite for Stabilization of Tailings at the Ulsan Abandoned Iron Mine
Choi, Jung-Chan ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 1~9
The purpose of this study is to evaluate laboratory experiments on arsenic and cadmium removal from tailings using apatite at the Ulsan Abandoned Iron Mine, and to develop a stabilization technique. The results of this study show that the permeability is decreased proportionally to the amount of apatite when it is added below 8%, while this is almost constant when the amount of apatite is added above 10%. The water extraction test from tailings using deionized water for several days shows that pH (7.4-8.4) is almost constant or slightly increased when apatite is added below 8%, while it is slightly decreased when apatite is added above 10%. According to TCLP test, reduction of concentrations of heavy metals in leachate is proportional to amount of apatite added. It seems that precipitates generated from leachate-apatite chemical reaction are not redissolved. As a result, cadmium and arsenic in leachate is mostly removed when apatite is added above 10%, and it is suggested that a proper technique should be selected for field application because either mixed or layered method shows almost same removal efficiencies of cadmium and arsenic in tailings.
Lab-Scale Air/Bio-Sparging Study to Remediate Diesel-Contaminated Soil and Groundwater : The Effect of Air Injection Rate and Pattern
Chang, Soon-Woong ; Lee, Si-Jin ; Cho, Su-Hyung ; Yoon, Jun-Ki ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 10~17
Laboratory-scale two-dimensional aquifer physical model studies were conducted to assess the effect of air injection rate and air injection pattern on the removal of disel contaminated soil and groundwater by air/bio-sparging. The experimental results were represented that the optimal conditions in this experiment were as air injection rate of 1,000 ml/min and pulsed air injection pattern(15 min on/off). The results of the TPH reduction, DO consumption and
production indicate the effective biodegradation evidence of diesel. Based on our results, The minimal
supply and pulsed air injection pattern could effectively enhance the diesel removal and the pulsing air injection had effect on oxygenation in this system. Thus, the cost of operating air/bio-sparging system will be reduced if optimal air injection rate and pulsed air injection pattern are applied to remediate contaminants.
Establishment of Simultaneous Analysis Method for the Detection of Multi-Pesticide Residue Used in Golf Courses
Yun, Jeong-Ki ; Lee, Min-Hyo ; Noh, Hoe-Jung ; Park, Jong-Gyum ; Kim, Hyuk ; Kim, Chan-Sub ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 18~24
The possibility of multiresidue analysis of 24 pesticides out of 30 residual pesticides which are subjected to test in the golf courses was examined. The utility of multiresidue method for pesticide residue test was evaluated by recovery test through a standard addition method of pesticides in water, soil, and lawn grass. The experimental results of the recovery test for individual pesticides are as follows : The number of pesticide of which average recovery rate was over 70% regardless of media was 16 pesticides. These pesticides were composed of 8 organophosphorus pesticides (chlorpyrifos, chlorpyrifosmethyl, diazinon, EPN, fenitrothion, phenthoate, phosalone, and toclofos-methyl). 4-organochlorinated pesticides (daconil, captan, endosulfan, and tetradifon), 2-pyrethroid pesticides(fenpropathrin, lambda-cyhalothrin) and 2 other pesticides (bromopropylate, pendimethalin). On the other hand, in case of dicofol, average recovery rate was over 70% for water and lawn grass but only 53.3% for soil. Therefore, the multiresidue method applied in this experiment is not appropriate for analysis of dicofol in soil. Furthermore, among 7 pesticides, 2 pesticides(amitraz and pyraclofos) showed that theirs average recovery rate deviated from criteria(
) in almost ail media, while 5 pesticides(bensulide, deltamethrin, iprodione, phosphamidon and tralomethlin) were not detected from all media by GC/NPD or GC/ECD.
Performance of a Hellow Fiber Membrane Diffuser for the Biological Removal of Gaseous BTX
Son, Young-Gyu ; Khim, Jee-Hyeong ; Song, Ji-Hyeon ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 25~32
In this study, a novel bioreactor system using a diffuser type hollow fiber membranes (hollow fiber membrane diffuser, HFMD) was applied to investigate the feasibility and biodegradation capacity for the treatment of a gaseous mixture consisting of benzene, toluene and p-xylene(BTX). First, A mixed culture pre-acclimated to toluene effectively biodegraded the BTX mixture at an overall removal efficiency of approximately 70% for a 20-day operational period. It was found that the biodegradation of toluene was slightly inhibited because of the presence of benzene and p-xylene. Second, the elimination capacity (EC) of total BTX increased up to 360
, which was substantially higher than maximum ECs for BTEX reported in the biofiltration literature. Consequently, the hollow fiber membrane diffuser was considered as an alternative method over other conventional VOC-treating technologies such as biofilters.
Dechlorination of Atrazine in Sediment Using Zero Valent Iron
Kim, Geon-Ha ; Jeong, Woo-Hyeok ; Choe, Seung-Hee ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 33~40
Residual pesticides discharged from diffuse sources at agricultural area in association with suspended solid will be settled at downstream, and may degrade surface water quality. This research studied dechlorination kinetic of atrazine, one of triazine-category herbicide, using zero-valent iron (ZVI) in sediment. It can be observed from the experiments that buffer capacity of sediment helped pH maintained beutral, resulted in continuous dechlorination. Sediments were spiked with atrazine at 10, 30, and 50 mg atrazine/L of total sediment for batch experiments. Dechlorination constants were
for the initial concentration of 10 mg/L,
for 30 mg/L, and
for 50 mg/L while dechlorination constants of initial concentration of 50 mg/L without ZVI adding were estimated as
. Half lifes atrazine by ZVI were estimated as 5.03 d fur 10 mg/L, 5.38 d for 30 mg/L, and 9.33 d for 50 mg/L, respectively.
The Evaluations of Daily Safe Yield and Influence of Hot Spring Wells
Lee, Chol-Woo ; Moon, Sang-Ho ; Kim, Hyeong-Chan ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 41~47
The evaluations of daily safe yield and reciprocal influence of hot spring wells are important subjects that the specialized agencies of hot spring has to survey. The survey of hot spring had been executed by Korea Institute of Geoscience and Mineral Resources (KIGAM) prior to 1996. However, as of 2006, eight specialized agencies of hot spring are working on it and so the survey of hot spring is not consistent now. This study was carried out to analyze data from hot spring in the same way by every specialized agency. The time of residual drawdown was applied to evaluate daily safe yield because some of wells have slow recovery of drawdown. The reciprocal influence between hot spring wells was evaluated by drawdown of observation wells when a new well was pumped.
A Study of Hydrodynamic Dispersions in the Unsaturated and the Saturated Zone of a Multi-soil Layer Deposit Using a Continuous Injection Tracer Test
Chung, Sang-Yong ; Kang, Dong-Hwan ; Lee, Min-Hee ; Son, Joo-Hyong ;
Journal of Soil and Groundwater Environment, volume 11, issue 4, 2006, Pages 48~56
Using a continuous injection tracer test at a multi-soil layer deposit, the difference of hydrodynamic dispersions in unsaturated and saturated zones were analyzed through breakthrough curves of Rhodamine WT, linear regression of concentration versus time, concentration variation rates versus time, and concentration ratio according to the distance from injection well. As a result of continuous injection tracer test, the difference of the maximum concentrations of Rhodamine WT in unsaturated and saturated zones were 13-15 times after 160 hours, and the increased rate of concentration versus time in unsaturated zone was about 10 times higher than in saturated zone. The fluctuation of Rhodamine WT breakthrough curve and concentration variation rate with time in saturated zone were larger than in unsaturated zone. Rhodamine WT concentration ratio with the distance from the injection well in saturation zone was linearly decreased faster than in unsaturated zone, and the elapsed time necessary for the concentration ratio less than 2 was longer in saturation zone. The differences resulted from the lower concentration and slower hydrodynamic dispersion of Rhodamine WT at the saturation zone of the multi-soil layer deposit, in which groundwater flow significantly flow and aquifer materials have high hydraulic heterogeneity. Effective porosity, longitudinal and transverse dispersivities were estimated
, respectively. The field longitudinal dispersivity is over 12 times larger than the laboratory longitudinal dispersivity by the scale-dependent effect.