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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
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 7, Issue 4 - Nov 2004
Volume 7, Issue 3 - Aug 2004
Volume 7, Issue 2 - May 2004
Volume 7, Issue 1 - Feb 2004
Selecting the target year
The prospect and the State of the Art for Marine Environmental Science and Technology from a Point of view of Marine Biotechnology
Kim Sang-Jin ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 111~115
In this manuscript the characteristics of marine environmental sciences and technology was depicted in the aspect of marine biotechnology, and the prospect of Korean society of Marine Environmental Engineering were suggested. Firstly definitions and main features of marine biotechnology and marine environmental sciences and technology were mentioned, and the long-term trends of environmental sciences and technology and the role of marine biotechnology to contribute for the development of marine environmental science and technology were described. The present state of the art for domestic research activities in the fields of marine environmental science and technology was reviewed and future directions for developing the Korean Society of Marine Environmental Engineering were suggested and discussed through understanding the present problems and solving those problems.
Feasibility Study of Applying EMMC Process to Recirculation Water Treatment System in High Density Seawater Aquaculture Farm through Laboratory Scale Reactor Operation
Jeong Byung Gon ; Kim Byung Hyo ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 116~121
Treatability tests were conducted to study the feasibility of EMMC process as a recycling-water treatment system in high density seawater aquaculture farm. To study the effect of organic and ammonia nitrogen loading rate on system performance, hydraulic retention time was reduced gradually from 12hr to 10min. The conclusions are can be summarized as follows. When the system HRT was reduced from 12hr to 2hr gradually, there was little noticeable change(reduction) in ammonia nitrogen removal efficiencies. However, removal efficiencies were decreased dramatically when the system was operated under the HRT of less than 2hr. In case of organics(COD), there was no dramatic change in removal efficiencies depending on HRT reduction. COD removal efficiencies were maintained successfully higher than 9％ when the system was operated at tile HRT of 10 min. System performances depending on media packing ratio in the reactors were also evaluated. There were little differences in each reactor performances depending on media packing ratio in reactor when the reactors were operated under the HRT of longer than 1hr. However, differences in reactor performances were considerably evident when the reactors were operated under the HRT of shorter than 1hr. When comparing reactor performance among 25％, 50％,7 5％ packed reactor, it can be judged that media packing ratio more than 50％ plays no significant role in increasing reactor performance. For this reason, packing the media less than 50％ is more reasonable way in view of economic. Such a tendency shown in COD removal efficiencies well agreed with the variation of ammonia-nitrogen removal efficiencies according to the media packing ratio in reactors at each HRT. Difference in effluent ammonia-nitrogen concentration between 50％ media packing reactor and 75％ media packing reactor was negligible. When comparing with the results of 25％ packing reactor, difference was not so great.
The Study for Identification of waterborne Spilled Oil by Fast Gas Chromatography
Chung J. W. ; Lee W.S. ; Yoon J. Y. ; Kim H. G. ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 122~130
Crude oil is complex mixture of thousands of different organic compound formed from a variety of organic materials that are chemically converted under differing geological conditions over long periods of time. Also oil composition varies according to crude source, refining, processing, handling and storage. The oil fingerprint method is application of specific knowledge of petrochemicals and use of sophisticated analytical equipment and techniques to identify the source(s) of oil pollution. KNMPA currently utilizes three primary analytical techniques: Gas Chromatography (GC), Fluorescence Spectroscopy(FL) and Infrared Spectroscopy(IR). Of all these techniques, GC technique are most widely used. Gas Chromatography is used as a primary analytical method because high reliableness, high separating efficiency and repeatability, but it is timeconsumable. The study results of identification of waterborne spilled oil by Fast Gas Chromatograph method showed that analytical time is cut down to 30minutes in comparison with packed column method and chromatograms represent high resolution and high repeatability.
Analysis on the Wave Characteristics of Submerged Breakwater Considering Energy Dissipation of Seabed
Kim Nam-Hyeong ; Yang Soon-Bo ; Park Min-Su ; Kim Sang-Jin ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 131~136
The transmission coefficients of impermeable submerged breakwater on permeable bottom are computed numerically using a boundary element method. The analysis method is based on the wave pressure function with the continuity in the analytical region including fluid and structures. Wave motion over permeable bottom is simulated by introducing a linear dissipation coefficient and an added mass coefficient. The results indicate that the wave over permeable bottom travels being damped, and that transmission coefficients for permeable bottom are smaller than those for impermeable bottom, and result from the change of width and height of submerged breakwater.
Analysis of Long-Term Wave Distribution at Jeju Sea Based on SWAN Model Simulation
Ryu Hwangjin ; Hong Keyyong ; Shin Seung-Ho ; Song Museok ; Kim Do Young ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 137~145
Long-term wave distribution at Jeju sea is investigated by a numerical simulation based on the thirdgeneration wave model SWAN (Simulating WAves Nearshore). The Jeju sea which retains relatively high wave energy density among Korean coastal regions is considered to be a suitable site for wave power generation and the efficiency of wave power generation is closely related to local wave characteristics. The monthly mean of a large-scale long-term wave data from 1979 to 2002, which is provided by Korea Ocean Research & Development Institute. is used as the boundary condition of SWAN model simulation with 1km grid. An analysis of wave distribution concentrates on the seasonal variation and spatial distribution of significant wave heights, mean wave directions and mean wave periods. Significant wave heights are higher in winter and summer and the west sea of Jeju appears relatively higher than east's. The highest significant wave height occurs at the northeast sea in winter and the second highest significant wave height appears at the southeast sea in summer, while the significant wave heights in spring and autumn are relatively low but homogeneous. The distribution of wave directions reveals that except the rear region influenced by wave refraction, the northwest wave direction is dominant in summer and the southeast in winter. Wave periods are longer in summer and winter and the west sea of Jeju appears relatively longer than east's. The longest wave period occurs at the west sea in winter, and in summer it appears relatively homogeneous with a little longer period at the south sea.
Effect of 2-hydroxypropyl-
-cyclodextrin on Biodegradation of High-Molecular Weight Polycyclic Aromatic Hydrocarbons by Novosphingobium pentaromtivorans US6-1
Kang Ji-Hyun ; Kwon Kae Kyoung ; Kim Sang-Jin ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 146~151
Cyclodextrin compounds including 2-hydroxypropyl-β-cyclodextrin(β-HPCD) though to be accelerate the biodegradation of PAHs molecule by increasing solubility of PAHs through detaining PAHs in their's cavity. However, only this mechanism is not sufficient to explain the enhancement of PAHs biodegradation by β-HPCD. To find out possible additional role of β-HPCD in the enhancement of PAHs biodegradation, biodegradation rates of pyrene and benzo[a]pyrene (B[a]P) by a PAHs degrading Novosphingobium pentaromtivorans US6-1 strain were compared between with and without addition of β-HPCD. Changes of bacterial biomass were also measured simultaneously. In addition catechol 1,2-dioxygenase activity was determined depending on pre-incubation conditions. As a result, β-HPCD accelerate the degradation rate of pyrene by strain US6-1 and especially the β-HPCD amendment was obligatory for the degradation of B[a]p. Bacterial biomass was responsible for β-HPCD, however, PAHs compounds such as pyrene and B[a]P did not contribute to the bacterial biomass. Catechol 1,2-dioxygenase specific activity of US6-l cells pre-cultured in MM2 medium containing l％ β-HPCD was higher than that of cells pre-cultured in ZoBell medium. The former case also showed similar activity compared to that of cells serially starved in MM2 medium after grown in ZoBell medium. These results imply that the presence of β-HPCD accelerate the degradation of PAHs by increasing the bacterial biomass as well as by increasing the water solubility of PAHs.
Analysis of Wave Energy Density for Korean Coastal Sea Area Based on Long-Term Simulated Wave Data
Song Museok ; Kim Doyoung ; Kim Min ; Hong Keyyong ; Jun Kichun ;
Journal of the Korean Society for Marine Environment & Energy, volume 7, issue 3, 2004, Pages 152~157
Wave energy distribution along the Korean coastal sea area was analysed based on the calculated wave data at KORDI. The wave data for the analysis is for the last 24 years (1979∼2002) and the model is HYPA and WAM using known wind field. The wave energy or wave power was evaluated based on the linear wave theory with a simple wave period assumption. The results shed some idea on the amount of usable wave energy and the sites of higher efficiency. It is fair to say that 3kw/m wave energy is easily observable and 10kw/m is frequently available depending on the season and location. The south west region of Jeju island is believed to have the highest overall wave energy density.