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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Environmental Science International
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Journal DOI :
The Korean Environmental Sciences Society
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Volume & Issues
Volume 24, Issue 12 - Dec 2015
Volume 24, Issue 11 - Nov 2015
Volume 24, Issue 10 - Oct 2015
Volume 24, Issue 9 - Sep 2015
Volume 24, Issue 8 - Aug 2015
Volume 24, Issue 7 - Jul 2015
Volume 24, Issue 6 - Jun 2015
Volume 24, Issue 5 - May 2015
Volume 24, Issue 4 - Apr 2015
Volume 24, Issue 3 - Mar 2015
Volume 24, Issue 2 - Feb 2015
Volume 24, Issue 1 - Jan 2015
Selecting the target year
Seasonal Variations of Water Quality and Phytoplankton of 4 Lagoons in the East Coast of Korea
Moon, Byeong Ryeol ; Jeon, Hyeon-Jin ; Jeon, Sook Lye ; Lee, Jae Sun ; Shin, Ji Eun ; Ahn, Ji Hye ; Yang, Yong Woon ; Hyun, Moon Sik ; Kim, Mia ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1101~1121
DOI : 10.5322/JESI.2015.24.9.1101
The seasonal variation of phytoplankton communities and its standing crops in accordance with environmental factors were investigated at Yeongrang-ho, Cheongcho-ho, Mae-ho and Hyang-ho which are located in the East coast of Korea during April to October 2011. High concentrations of T-N and T-P were observed in four lagoons due to the inflowing nutrients from farmlands and residential areas near lagoons. Nutrient salts mainly composed of nitrogen and phosphate caused the eutrophication of the lakes, leading to the robust growth of phytoplankton. During the period of investigation, 64 to 107 taxa of phytoplankton were observed in four lagoons. Diatoms were the most dominant species with high density. Non-point pollution source was estimated as the main cause of water pollution of lagoons. Trophic states of lagoons evaluated using the value of TSI and TSIKO indicated that all the investigated lagoons were in the eutrophication state.
Evaluation of Adsorption Characteristics of Radioactive Iodine (I-131) for Various Materials of Granular Activated Carbon (GAC)
Park, Hong-Ki ; Son, Hee-Jong ; Yeom, Hoon-Sik ; Kim, Young-Jin ; Choi, Jin-Taek ; Ryu, Dong-Choon ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1123~1129
DOI : 10.5322/JESI.2015.24.9.1123
This research was performed by means of several different virgin granular activated carbons (GAC) made of each coal, coconut and wood, and the GACs were investigated for an adsorption performance of iodine-131 in a continuous adsorption column. Breakthrough behavior was investigated that the breakthrough points of the virgin two coals-, coconut- and wood-based GACs were observed as bed volume (BV) 7080, BV 5640, BV 5064 and BV 3192, respectively. The experimental results of adsorption capacity (X/M) for iodine-127 showed that two coal- based GACs were highest (208.6 and
), the coconut-based GAC was intermediate (
) and the wood-based GAC was lowest (
). The X/M of the coal-based GACs was 2~4 times higher than the X/M of the coconut-based and wood-based GACs.
A study on the Prediction of Indoor Concentration due to Radon Exhalation from Domestic Building Materials
Lee, Cheolmin ; Gwak, Yoonkyung ; Lee, Donghyun ; Lee, Dajeong ; Cho, Yongseok ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1131~1138
DOI : 10.5322/JESI.2015.24.9.1131
Radon exhalation rates have been determined for samples of concrete, gypsum board, marble, and tile among building materials that are used in domestic construction environment. Radon emanation was measured using the closed chamber method based on CR-39 nuclear track detectors. The radon concentrations in apartments of 100 households in Seoul, Busan and Gyeonggi Provinces were measured to verify the prediction model of indoor radon concentration. The results obtained by the four samples showed the largest radon exhalation rate of
for sample concrete. The radon concentration contribution to indoor radon in the house due to exhalation from the concrete was
. The difference between the prediction concentration and actual measured concentration was believed to be due to the uncertainty resulting from the model implementation.
Evaluation of Green GDP by Emergy Analysis
Lee, Dong Joo ; Jo, Hyo Seon ; Lee, Suk Mo ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1139~1144
DOI : 10.5322/JESI.2015.24.9.1139
The gross domestic product(GDP) measures the welfare of a nation's economy through the aggregation of products and services produced in a nation. Although GDP is a proficient measure of the magnitude of the economy, many economists, environmentalists, and citizens have recently criticized the gross domestic product. The criticism stems from the fact that this measurement of domestic product does not account for environmental degradation and resource depletion. We need to estimate the environmentally adjusted net domestic product. The gross domestic product was 913 trillion won while environmental protection expenditure was 32.9 trillion won by monetary accounts of Korea, 2010. Loss of natural assets was 76.6 trillion emwon by emergy analysis of Korea, 2010. The Green GDP was accounted for 88.0% of the GDP to 803.5 trillion won.
Removal of Sr and Cs Ions in Aqueous Solution by PVC-Zeolite Composite
Lee, Chang-Han ; Lee, Min-Gyu ; Min, Seong-Kee ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1145~1153
DOI : 10.5322/JESI.2015.24.9.1145
PVC-Zeolite composite was prepared by immobilizing zeolite with polyvinyl chloride (PVC). The prepared PVC-Zeolite beads were characterized by using X-ray diffractometer (XRD), fourier transform infrared spectrometer (FTIR), thermo gravimetric analyzer (TGA), and scanning electron microscopy (SEM). The removal properties of Sr and Cs ions from aqueous solution were investigated in batch experiment. The removal efficiencies of Sr and Cs ions by the PVC-Zeolite beads were dependent on the initial pH of solution. The removal efficiencies sharply increased at below pH 4 and was kept constant at pH 4 or more. The adsorption kinetics of Sr and Cs ions by the PVC-Zeolite beads were fitted well by the pseudo-second-order model (
>0.99) more than pseudo-first-order model. The maximum adsorption capacities of Sr and Cs ions calculated from Langmuir isotherm model were 39.37 mg/g and 55.87 mg/g, respectively.
To Predict the Tendency of the Development of Urban Comprehensive Park through the Social Reform of China - The Example of Changes of Comprehensive Park in Wuhan City -
Zhuang, Yue ; Jo, Hyunju ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1155~1161
DOI : 10.5322/JESI.2015.24.9.1155
This paper is to study the tendency of the development of the urban comprehensive park in the modern history of China, and take the urban comprehensive park of Wuhan as an example to study the local research through the literature.. In 1928, Wuhan Urban Comprehensive Park starting stage characteristics to the ideological education of the government as the center, in 1977 the policy of reform and opening to the outside world to entertainment center, ecology design point of view, the introduction of open space and urban plaza, to human centered design, application of science and technology. 2015 in Wuhan Urban Garden Expo theme can be seen in green life as the goal, through the design of urban comprehensive park ecology and human centered design, the application of science and technology development.
Evaluation of Drinking Water Treatment Efficiency according to Regeneration Temperatures of Granular Activated Carbon (GAC)
Kim, Sang-Goo ; Son, Hee-Jong ; Jung, Jong-Moon ; Ryu, Dong-Choon ; Yoo, Pyung-Jong ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1163~1170
DOI : 10.5322/JESI.2015.24.9.1163
This study carried out continuous column test for estimating the regeneration efficiency with regeneration times and temperatures. More times regenerated granular activated carbon (GAC) has more ash in the GAC and has less apparent density. Two times regenerated GAC (
re-GAC) could removed the Trihalomethanes (THMs) in the water for the first two week after starting continuous column test, on the other hand five times regenerated GAC (
re-GAC) did not have adsorption capacity. The THMs concentration in the effluent was almost equal or higher than that of influent at the first time of continuous column test.
re-GAC showed much more DOC adsorption capacity than
re-GAC and the GAC which was regenerated with
had highest DOC removal efficiency among the GACs with 600, 700, 800,
regeneration temperatures. It is anticipated the cost of GAC regeneration could be saved more 100 million won by reducing the furnace temperature of 3rd~4th and 5th~6th about
compared to the current regeneration condition.
Observational Study to Investigate Thermal Environment and Effect of Clean- Road System over a Broad Way of Daegu in Summer
Kim, Sung-Rak ; Jung, Eung-Ho ; Kim, Hae-Dong ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1171~1180
DOI : 10.5322/JESI.2015.24.9.1171
To investigate thermal environment and effect of clean-road system over a broad way, we conducted the filed meteorological observation during 12~13 August 2014. The clean-road system was employed over a part of the broad way of Dalgubul(Dalgubul-Daero) by Daegu Metropolitan city in 2011. The clean-road system in general is operated two times(4 am, 2 pm) during summertime. In case of scorching alert, the system is operated 3 times a day(4 am, 2 pm and 4 pm). To evaluate the present thermal condition and the improvement effects due to the system, we analyzed the time variation of discomfort index and WBGT(wet-bulb and globe temperature). WBGT was more than 25 during 8 a.m. ~ 9 p.m. And discomfort index was more than 75 during 8 a.m. ~ 11 p.m. The thermal improvement effect of the clean-road system was restrictive during daytime.
Inactivation of Seawater Zooplankton Aretemia sp. using Physical and Chemical Processes
Zheng, Cheng ; Kim, Dong-Seog ; Park, Young-Seek ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1181~1188
DOI : 10.5322/JESI.2015.24.9.1181
In this study, we discussed about the application of the single physical and chemical treatment processes and the physical-chemical complex treatment processes on the inactivation of Artemia sp. in order to satisfy the USCG Phase II (United States Coast Guard). The results showed that initial disinfection rate of ultrasonic process in single batch process is higher than that of electrolysis. However, the inactivation rate showed slower than electrolysis. The inactivation rate of Artemia sp. on the single continuous treatment process ranked in the following order: homogenizer > electrolysis > ultrasonic process. Inactivation rate of Artemia sp. in continuous homogenizer-electrolysis complex process was reached at 100% immediately. A synergistic effect of ultrasonic-electrolytic complex process was found to be a small. The order of processes in a complex process did not affect the disinfection performance.
Application of Modified Sericite for Dyeing Wastewater Treatment
Choi, Hee-Jeong ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1189~1197
DOI : 10.5322/JESI.2015.24.9.1189
The aim of this study was to investigate the nutrient removal using Mg-Sericite flocculant in the dyeing wastewater. Mg-Sericite flocculant was removed successfully > 98% of the Color, SS. COD and BOD in the dyeing wastewater at the following optimal Mg-Sericite dosage: 100 mg/L for Colour and SS, 300 mg/L for BOD and COD. The removal of TN and TP was obtained 92.00% with 50 mg/L and 87.80% with 100 mg/L Mg-Sericite dosage, respectively. These results was indicated that the amount of 0.79~1.31, 0.22~0.37, 0.5 and 0.16 mg/L Mg-Sericite was necessary for 1 mg/L removal BOD, COD, TN and TP, respectively. The biopolymer, Mg-Sericite, can be a promising flocculants due to its high efficiency and low dose requirements. In addition, Mg-Sericite does not contaminate treated wastewater, which can be recycled to reduce not only the cost and the demand for water but also the extra operational costs for reusing wastewater. This flocculation method is helpful to lower the wastewater treatment cost.
An Estimation of Extreme Wind Speed of Typhoon Affecting the Damage of Public and Industrial Facilities
Jung, Woo-Sik ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1199~1210
DOI : 10.5322/JESI.2015.24.9.1199
There were 35 typhoons affecting Korean Peninsula from 1999 to 2009(The average annual number of typhoon is 3.18). Among these typhoons, the number of typhoon passing through the Yellow sea, the Southern sea and the East sea were 14, 6 and 15 respectively. Wind speed on the height of 10 m can be finally estimated using the surface roughness after we calculate wind speed on the height of 300 m from the data on the surface of 700 hPa. From the wind speeds on the height of 10 m, we can understand the regional distributions of strong wind speed are very different according to the typhoon tracks. Wind speed range showing the highest frequency is 10~20 m/s(45.69%), below 10 m/s(30.72%) and 20~30 m/s(17.31%) in high order. From the analysis of the wind speed on the hight of 80 m, we can know the number of occurrence of wind speed between 50 and 60 m/s that can affect wind power generation are 104(0.57%) and those of between 60 and 70 m/s that can be considered as extreme wind speed are even 8(0.04%).
A Study on the Low Impact Development Infiltration Treebox for Environment Friendiy pedestrian
Yeom, Sung-Jin ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1211~1220
DOI : 10.5322/JESI.2015.24.9.1211
Soil is the most important factor in natural environment for bio-diversity. Urbanization and development of city devastate urban soil by the fraternization of green network and run off pollution. In these facts, preservation of soil is the main issue in maintain of quality urban environment. In order to handle this issue, the gold network that link fragment soil patches is considered in maintain quality soil. This study researched the infiltration Treebox design technique based on the Low Impact Development. This technique suggest reduction of impervious area of the soil due to urbanization. The main concept of this study is encourage more permeable surfaces in urban area by using a infiltration planter. The function of the planter is hold run off as much as possible from intensive rainfall, and utilizes it in drought season. Also, this planter provides fertile soil for organism habitat by keeping appropriate moisture supplying.
Effect of the Organic Fertilizer Mixed with Various Recycled Coir Substrates on Chinese Cabbage(Brassica Campestris Ssp. Pekinensis) and Lettuce(Lactuca Sativa)
Lee, Gyu-Bin ; Park, Eun-Ji ; Park, Young-Hoon ; Choi, Young-Whan ; Suh, Jeong-Min ; Kang, Jum-Soon ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1221~1231
DOI : 10.5322/JESI.2015.24.9.1221
The present study was conducted to find a way to recycle the coir substrate by investigating changes in its physical and chemical properties based on the number of use year. Specific gravity of unused coir substrate was
, while it was higher for the substrate used for 2 years. Porosity was different depending on the number of use year. The porosity of unused substrate was 51.9%, but it increased to 68.6% after used for 2 years. In general, physical and chemical properties were better in the coir substrate used for 2 years than in unused one. The number of leaves, leaf area, flesh weight and dry weight of oriental cabbage and lettuce were higher in coir substrate used for 2 years than those in unused one. Whereas, no significant difference was observed between the substrates used for one year and 2 years, indicating that the one time-used wast substrate could be recycled for cultivating vegetables. Growth of the vegetables was improved when organic fertilizer composed of complex organics with different mixing ratios was provided to the coir substrate, compared to untreated plot. The optimum mixing ratio of the wast substrate and complex organics was 2:8(v/v) for fertilization using wast coir substrate. Therefore, coir substrate generally wasted after being used for one time was reuseable by supplying organic fertilizer.
A Study on Improving Egg Freshness Using Red Ginseng Marc Powder to Laying Hens -A Field Study-
Choi, Jung-Hoon ; Kim, Chang-Man ; Choi, In-Hag ;
Journal of Environmental Science International, volume 24, issue 9, 2015, Pages 1233~1237
DOI : 10.5322/JESI.2015.24.9.1233
This study was conducted to evaluate the effects of red ginseng marc powder on egg freshness in laying hens during 4 weeks. A total of 60 Hy-line Brown laying hens, 50 week of age, were randomly assigned to 2 groups with diets containing 0% and 2% red ginseng marc powder. There were 3 replications per group with 10 laying hens per pen. Throughout the period of the trial, there were no effects of red ginseng marc powder on egg weight (but not 4 weeks). Haugh Unit (HU) values were observed by showing significant differences between red ginseng marc powder and controls at 0 and 4 weeks, except for HU at 1 through 3 weeks. For egg yolk color, red ginseng marc powder has no difference in comparison with controls at 0, 3 and 4 weeks (but not 1 and 2 weeks). In conclusion, the dietary supplementation with 2% red ginseng marc powder improved HU values throughout the experiment.