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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society for Marine Environment & Energy
Journal Basic Information
Journal DOI :
The Korean Society for Marine Environmental Engineering
Editor in Chief :
Volume & Issues
Volume 17, Issue 4 - Nov 2014
Volume 17, Issue 3 - Aug 2014
Volume 17, Issue 2 - May 2014
Volume 17, Issue 1 - Feb 2014
Selecting the target year
Dissolved Copper and Nickel in the surface water of East Sea, Korea
Yoon, Sang Chol ; Yoon, Yi Yong ; Suh, Young Sang ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 257~267
DOI : 10.7846/JKOSMEE.2014.17.4.257
The distributions of trace metals in the East Sea were investigated during the R/V Lavrentyev cruise (July 2009) in which four transects from Russia shore to South were conducted to collect 25 surface water samples. The total dissolved concentrations of Cu and Ni were measured using ICP-MS, DRC-e. In the coastal area, their concentrations of Russia shore (Cu, 1.51; Ni, 1.82 nM) were 1.9 times for Cu and 2.0 times for Ni lower than Korea shore (Cu, 2.87; Ni, 3.71 nM). In the subregion, their concentrations of Warm region (Cu, 3.03; Ni, 2.28 nM) were higher for Cu than Cold region (Cu, 2.04; Ni, 2.28 nM). The distributions of Cu and Ni concentrations were divided by lowest level at
of water temperature. In this study period, the surface water temperatures of Russia shore and Japan basin were lower than
and them of Ulleung basin and Sakhalin shore were higher. Below
, Cu and Ni concentrations increased when surface water temperatures decreased. Above
, their concentrations increased with temperature, which showed highest concentrations in the Ulleung basin, directly influenced by flux from East Korean Warm Current. By comparing with other sea areas (Western Mediterranean, Atlantic), Cu concentrations in the East Sea were a little higher and Ni concentrations were lower. Particularly as the level of Cu in the offshore in the Ulleung basin were higher than in the coastal area, We can suggest that the atmospheric flux of Cu is relatively important in this area.
Study on Efficient Carbonizing Conditions When Carbonizing Fish Offal
Jeong, Byung Gon ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 268~273
DOI : 10.7846/JKOSMEE.2014.17.4.268
Experiments on carbonization were conducted using fish offal generated from fish market for the purpose of resource recycling. Elemental composition of fish offal and effect of carbonation temperature on the overall yield were investigated. Carbon and hydrogen contents of fish offal were 51.1% and 7.6%, respectively in view of elemental composition. Particularly, nitrogen and sulfur contents were as high as 9.8% and 1.0%, respectively. These values suggests that odor problem of fish offal can be serious. Comparing elemental composition of fish offal with other waste materials, it is thought that carbon and hydrogen contents are considerably high. These implies that thermal disposal will be the best option for final disposal method of fish offal. As a results of carbonization experiments on Mackerel, Hairtail, Croaker and mixed sample of Mackerel, Hairtail and Croaker, carbonization patterns were quite similar irrespective of fish species. Carbonization yield was varied significantly depending on carbonization temperature at the carbonization time of 5 minutes and 10 minutes. When the carbonization time was maintained longer than 30 minutes, yield variation depending on time variation at each temperature was insignificant. Thus, it can be concluded that effect of carbonization time on overall yield was minor when the carbonization time was maintained longer than 30 minutes. Primary vaporization in carbonization conducted at the temperature of
was minor. Thus, difference of yield between temperature of
was appeared greatly. It can be concluded that yield difference depending on carbonization temperature can be neglected if the carbonizing temperature exceed
and carbonizing time exceed 10 minutes at the same time.
Economic Feasibility Analysis of Marine Debris Pollution Abatement Technology Program
Kwon, Young-Ju ; Park, Se-Hun ; Yoo, Seung-Hoon ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 274~282
DOI : 10.7846/JKOSMEE.2014.17.4.274
The Korean government is considering the implementation of the marine debris pollution abatement technology program (MDPATP) to mitigate the negative impacts of marine debris and systematically manage marine debris through scientific researches such as monitoring and environmental impact assessment of marine debris. In this regard, this study attempts to analyze the economic feasibility of the MDPATP in order to provide policy-maker with useful information. To this end, the indices for economic feasibility such as net present value (NPV), benefit/cost (B/C) ratio, and internal rate of return (IRR) are presented. The results show that NPV, B/C ratio, and IRR are computed to be 45.7 billion won, 2.72, and 17.12%, respectively, which are bigger than 0, 1.0, and 5.5%, and that the MDPATP passes the cost-benefit analysis. Thus, it is concluded that it is socially profitable to conduct the MDPATP.
Characteristics and Risk Assessment of Heavy Metals in the Stormwater Runoffs from Industrial Region Discharged into Shihwa Lake
Ra, Kongtae ; Kim, Joung-Keun ; Lee, Jung-Moo ; Lee, Seung-Yong ; Kim, Eun-Soo ; Kim, Kyung-Tae ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 283~296
DOI : 10.7846/JKOSMEE.2014.17.4.283
The distribution of heavy metals in the stormwater runoffs from industrial sites around Shihwa Lake that implements the total pollutant load management system (TPLMS) was studied to characterize the temporal changes of metal concentrations and to assess the ecological risk in dissolved and particulate phases of the selected metals. The dissolved Co and Ni concentration demonstrated first flush and tended to decrease with increasing of the duration of rainfall. The intensity of precipitation was found to be the main controlling factor of particulate metals in the stromwater runoffs. The particulate concentration of Pb accounted for 97.2% so the particulate phase was its main form. Other metals followed the sequence: Pb>Cu>Cd>Co>Zn>Ni. The particulate-dissolved partitioning coefficient (
) indicated that the
of Pb were bigger than that of other metals because the metal Pb in the stormwater runoffs is quickly removed into the particulate phase. In a single day rainfall event, total runoff fluxes for total metals as the sum of dissolved and particulate forms through only two sewer outlets were 2.21 kg for Co, 30.5 kg for Ni, 278.3 kg for Cu, 398.3 kg for Zn, 0.39 kg for Cd and 40.0 kg for Pb, respectively. Given the annual rainfall, the number of rain days and the basin area for total pollutant load management system (TPLMS) of Shihwa area, enormous amount of non-point metal pollutants were entered into Lake with any treatment. The dissolved metals (e.g., Ni, Cu and Zn) in the stormwater runoffs exceeded the acute water quality criteria. Additionally, all metals were significantly enriched in the particulate phase and exceeded the PEL criteria of sediment quality guidelines (SQGs). These results indicated that the heavy metals in the stormwater runoffs may pose a very high ecological risk to the coastal environments and ecosystem.
Classification of Passing Vessels Around the Ieodo Ocean Research Station Using Automatic Identification System (AIS): November 21-30, 2013
Hong, Dan-Bee ; Yang, Chan-Su ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 297~305
DOI : 10.7846/JKOSMEE.2014.17.4.297
In this study, we installed the Automatic Identification System (AIS) receiver on the Ieodo Ocean Research Station (IORS) from November 21 to 30, 2013 in order to monitor marine traffic and fishery activity in the jurisdictional sea area. The collected AIS raw data consist of static data report (MMSI, IMO NO., Call Sign, Ship Name, etc.) and position information report (position, speed, course, etc.), and the developed program was applied to classify ships according to ship flag and type information. The nationalities are released from the first three-digit numbers (MID) of MMSI, but in general most of small ships do not send an exact ship flag through Class B type AIS, a simplified and low-power equipment. From AIS data with flag information, ships under the flag of China had the highest frequency and the second was Korean flag, while in ship type cargo and fishing vessels were dominant in sequence. As for the ships without flag information, we compared the tracks with others in order to estimate ship flags. It can be said that fleets of ships with Chinese frequently appear sail together for fisheries over the waters, because the unknown ships followed a similar moving pattern with Chinese fishing vessels.
Estimation of Addition and Removal Processes of Nutrients from Bottom Water in the Saemangeum Salt-Water Lake by Using Mixing Model
Jeong, Yong Hoon ; Kim, Chang Shik ; Yang, Jae Sam ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 306~317
DOI : 10.7846/JKOSMEE.2014.17.4.306
This study has been executed to understand the additional and removal processes of nutrients in the Saemangeum Salt-water Lake, and discussed with other monthly-collected environmental parameters such as water temperature, salinity, dissolved oxygen, suspended solids, and Chl-a from 2008 to 2010.
-P, and DISi showed the removal processes along with the salinity gradients at the surface water of the lake, whereas
-N, and Chl-a showed addition trend. In the bottom water all water quality parameters except
-N appeared addition processes indicating evidence of continuous nutrients suppliance into the bottom layer. The mixing modelling approach revealed that the biogeochemical processes in the lake consume
-N and consequently added
-P to the bottom water during the summer seasons. The
-P appeared strong increase at the bottom water of the river-side of the lake and strong concentration gradient difference of dissolved oxygen also appeared in the same time. DISi exhibited continuous seasonal supply from spring to summer. Internal addition of
-P in the river-side of the lake were much higher than the dike-side, while the increase of DISi showed similar level both the dike and river sides. The temporal distribution of benthic flux for DISi indicates that addition of nutrients in the bottom water was strongly affected by other sources, for example, submarine ground-water discharge (SGD) through bottom sediment.
Development of Prediction Program for the Towing Condition Associated with Various Towing Operations of a Disabled Ship
Kim, Eun-Chan ; Choi, Hyuek-Jin ; Lee, Seung-Guk ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 318~323
DOI : 10.7846/JKOSMEE.2014.17.4.318
When a disabled ship is being towed in a seaway, the speed and direction of the towed ship are estimated by using the towing force and direction of the selected tug boats at the predicted sea conditions including the wind and currents. In this paper, prediction method at the towing conditions of the various towing operations for a disabled ship are studied. The proposed calculation method suggests firstly the method to import the speed and resistance of the forward direction of the towed ship calculated by the existing computer program, second, the method to calculate the speed and resistance of the towed direction of the towed ship acquired from the selected tug boats at the initial towing conditions and lastly, the method to calculate the speed and resistance of the towed direction for the towed ship at the stable towing conditions. These calculation methods have been applied to the computer program and this program has been approved to be a useful program, capable of appropriately predicting the towed ship's conditions.
Long-Term Variations of Water Quality in Jinhae Bay
Kwon, Jung-No ; Lee, Jangho ; Kim, Youngsug ; Lim, Jae-Hyun ; Choi, Tae-Jun ; Ye, Mi-Ju ; Jun, Ji-Won ; Kim, Seulmin ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 324~332
DOI : 10.7846/JKOSMEE.2014.17.4.324
In order to reveal the long-term variations of water quality in Jinhae Bay, water qualities had been monitored at 9 survey stations of Jinhae Bay during 2000~2012. The surface and bottom waters concentrations of chemical oxygen demand (COD), dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), and chlorophyll-a (Chl.-a) were higher at the survey stations of Masan Bay than the stations of other Bays. Especially, station 1 which is located at the inner area of Masan Bay had the highest values in the concentrations of COD, DIN, and Chl.-a because there were terrestrial pollutant sources near the station 1 and sea current had not well circulated in the inner area of Masan Bay. In factor analysis, the station 1 also had the highest factor values related to factors which increase organic matters and nutrients in surface and bottom waters of Masan Bay. However, the stations (st.5, st.6, st.7, st.8, and st.9) of other Bays had lower values of the factors. In time series analysis, the COD concentrations of the bottom waters at 8 stations except for station 1 distinctly decreased. However, the COD concentrations of the surface waters showed no distinct decrease trends at all stations. In the concentrations of nutrients (DIN and DIP) of both surface and bottom waters, there were tremendous decrease trends at all stations. Therefore, these distinct decrease trends of the COD in bottom waters and the nutrients in surface and bottom waters of Jinhae Bay could have been associated with water improvement actions such as TPLMS (total pollution load management system).
Production of High Hardness Concentrated Seawater Using NF Membrane
Ji, Ho ; Moon, Deok Soo ; Choi, Mi Yeon ; Kim, Kwang Soo ; Lee, Ho Saeng ; Kim, Hyeon Ju ;
Journal of the Korean Society for Marine Environment & Energy, volume 17, issue 4, 2014, Pages 333~337
DOI : 10.7846/JKOSMEE.2014.17.4.333
The purpose of this study is to develop a process technology to produce high hardness concentrated seawater removing chloride ions but containing useful minerals such as magnesium and calcium in the seawater desalination process. In order to make high hardness concentrated seawater, evaporation system is mostly used recently. Because evaporation system requires a large amount of energy consumption, in this study, it was aimed to produce high hardness concentrated seawater using membrane filtration requiring less energy. Nano filtration membranes were used for the experiments, and different types of high hardness concentrated seawater was produced depending on the membranes' specification, the number of times being concentrated, and pressure. As a result, at between 15bar and 20 bar in pressure, in between the second and the third times of concentration, the experiment result showed the best economic efficiency. By the experiment, production of high hardness concentrated seawater seemed to have a good economic feasibility.