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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society of Environmental Engineers
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Journal DOI :
Korean Society of Environmental Engineering
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Volume & Issues
Volume 31, Issue 12 - Dec 2009
Volume 31, Issue 11 - Nov 2009
Volume 31, Issue 10 - Oct 2009
Volume 31, Issue 9 - Sep 2009
Volume 31, Issue 8 - Aug 2009
Volume 31, Issue 7 - Jul 2009
Volume 31, Issue 6 - Jun 2009
Volume 31, Issue 5 - May 2009
Volume 31, Issue 4 - Apr 2009
Volume 31, Issue 3 - Mar 2009
Volume 31, Issue 2 - Feb 2009
Volume 31, Issue 1 - Jan 2009
Selecting the target year
Materials for microbial fuel cell : electrodes, separator and current collector
Song, Young-Chae ; Woo, Jung-Hui ; Yoo, Kyu-Seon ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 693~704
Electrochemical Principles as Applied to Microbial Fuel Cells
Kim, Sung-Hyun ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 705~718
Operational conditions and design factors of microbial fuel cell for practical application
Kim, Chang-Won ; Cha, Jae-Hwan ; Choi, Soo-Jung ; Yu, Ha-Na ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 719~732
Removal of Cu(II) with the Recycled Hydroxylapatite from Animal Bones
Kim, Mu-Nui ; Kim, Won-Gee ; Lee, Seung-Mok ; Yang, Jae-Kyu ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 735~742
The bone of spinal animals has a hydroxylapatite (
, HAp) structure which is well known as an excellent inorganic ion exchanger for various heavy metal ions in solutions. In this study, the reusability of cow-bone, pig-bone and fish-bone as a potential material for the removal of heavy metals in solutions was evaluated from the removal of Cu(II) ion in batch tests. The surface properties of three bones, calcined at different temperatures, were measured with SEM, XRD, FT-IR analyses. From the SEM analysis, a clear development of heterogeneity as well as pores having small diameter was observed as the calcination temperature increased. The results of X-ray diffraction analysis showed well developed crystallinity on the surface of calcined bones obtained at higher temperatures, suggesting a transform of amorphous type to crystalline type. Fourier transform infrared (FT-IR) analysis showed disappearance of water molecule on the surface of HAp and organic functional groups of the HAp with increasing the calcination temperatures. Cu(II) removal in the control test was below 15%. By the way, additional 40% increase of Cu(II) removal was observed in the presence of calcined bones. For three bones, Cu(II) removal was decreased as the calcined temperature increased. Cu(II) removal was increased as the solution pH increased due to a favorable condition for the cation exchange as well as precipitation.
Effect of Chemical Conditioning on Flotation and Thickening Efficiencies of Sewage Sludge
Lee, Chang-Han ; Ahn, Kab-Hwan ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 743~748
Chemical sludge conditioning is widely used to improve the dewatering efficiency. It is treated with commonly used conditioners, and then thickened and dewatered with a mechanical device. This paper aims to examine the flotation and thickening efficiencies of sewage sludge for conditioning conditions, such as unaerobic storage time, kinds of coagulant and dosages, and flotation conditions, such as sludge concentration and A/S ratio, using an dissolved air flotation apparatus. Experimental results showed that the specific surface area and specific resistance to filtration (SRF) were significantly increased and the flotation and thickening efficiencies were decreased with anaerobic storage time. However, the flotation and thickening efficiencies faintly decreased in sewage sludges conditioned as
, and PSO-M. Flotation and thickening efficiencies in conditioned sewage sludge could be sustained up to 96% at A/S ratio of 0.01 mL/mg or over.
The Removal Characteristics of Bromate using Various Materials in GAC Process
Son, Hee-Jong ; Choi, Young-Ik ; Jung, Chul-Woo ; Park, Jin-Sik ; Jang, Seong-Ho ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 747~752
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 bromate 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 9252 bed volume (BV), 6821 BV, 5291 BV and 2431 BV, respectively. The experimental results of adsorption capacity (X/M) for bromate showed that two coal- based GACs were highest (1334.5 and 798.2
/g), the coconut-based GAC was intermediate (668.6
/g) and the wood-based GAC was lowest (156.8
/g). The X/M of the coal-based GACs was 2~8.5 times higher than the X/M of the coconut-based and wood-based GACs. The results of carbon usage rates (CURs) for the virgin two coal-, coconut- and wood-based GACs were shown as 0.19, 0.25, 0.33 and 0.71 g/day respectively. The adsorption capacity, k values, were also investigated by means of the GACs for bromate. The k values of two coal-, coconut- and wood- based GACs for bromate were found to be 121.3, 76.7, 43.3 and 14.6 respectively. This results suggested that using the virgin GAC made of coal was the best selection for removal of bromate in the water treatment for an advanced treatment.
Distribution of Pollutant Content within Surface Sediment and Evaluation of Its Removal Efficiency in the Sihwa Constructed Wetland
Choi, Don-Hyeok ; Choi, Kwang-Soon ; Kim, Dong-Sup ; Kim, Sea-Won ; Hwang, In-Seo ; Lee, Mi-Kyung ; Kang, Ho ; Kim, Eun-Soo ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 755~764
To estimate the pollutant removal efficiency by surface sediment, matter content within surface sediment and its release from the sediment were investigated at 12 sites in the Sihwa constructed wetland. The content of COD, TOC, IL, TN, and TP within sediment varied temporally and spacially, showing ranges of 4.1~7.7 mg/g, 0.29~2.81%, 1.88~8.15%, 0.03~0.35%, 362~1,150
/g, respectively. The contents of organic matter and TN were significantly highest in March and decreased towards fall (March
September, p=0.003 for COD, p=0.001 for TOC, p=0.017 for IL, p=0.015 for TN), whereas TP content was not significant statistically in difference between sampling times. The contents of heavy metals also varied largely with sampling sites and times (As:3.5~3.9
/g). As compared with sediment quality guideline, the content of organic matter within surface sediment of the Sihwa constructed wetland was classified as unpolluted level. In contrast, the contents of TN, TP and heavy metals were classified as medium or severe pollution state, except some heavy metals (Cu and Pb). From the results of release experiment, TN, Pb, and Zn tend to be removed by surface sediment, but TP, Cd, and Cu have a tendency to released from sediment. Therefore, a relevant plan to improve the removal efficiency of pollutant (especially phosphorus) by surface sediment in the Sihwa constructed wetland is needed.
Unit Mass Estimation and Analysis from Fiber Dyeing and Finishing Facility Nearby Nakdong River Basin
Gu, Jung-Eun ; Nah, Dong-Hoon ; Lee, Seung-Hwan ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 765~774
Fiber Dyeing and Finishing facility has been recognized as an important pollution source due to its consumption of large volumes of water and chemicals. Unit mass discharge for the conventional water quality parameters such as flowrate, SS,
, TN, TP were estimated. To represent the respective industries, three companies were carefully selected based on its manufacturing goods, flowrate and location at various unit operations and processes. More than 90% of decrease in unit mass estimation between influent and effluent of BOD was observed. But the values themselves were similar to those of Fiber Manufacturing facility due to the high loadings of organic matter. Biodegradability of influent was almost three times higher than that of effluent. Unit mass discharge estimations of unit process (estimated in this study) based on space, products and raw material were similar to those of composite process (estimated by National Institute of Environmental Research), while big difference was observed in the other factors. Unit mass discharge factors calculated in this study can be used as the reference for the estimation of water pollution loading costs in Nakdong river basin. For the effective water pollution control and management, it is essential to characterize the various types of water quality parameters from the effluents of individual industrial wastewater treatment plants.
Synthesis of Amin-type Anion Exchanger from Acrylic Acid Grafted Polypropylene Nonwoven Fabric and Its Ion-exchange Property(II)
Na, Choon-Ki ; Park, Hyun-Ju ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 775~782
PP-g-AA-Am nonwoven fabric, which possess anionic exchangeable function, was prepared by chemical modification of carboxyl (-COOH) group of PP-g-AA nonwoven fabric to amine (
) group using diethylene triamine (DETA). Its adsorption characteristics for anionic nutrients including isotherm, kinetics and co-anions were studied by batch adsorption experiments. Adsorption equilibriums of
-P on PP-g-AA-Am fabric were well described by the Langmuir isotherm model, and their adsorption energies were ranged 10.3 kJ/mol indicating an ion-exchange process as primary adsorption mechanism. The adsorption selectivity of PP-g-AA-Am nonwoven fabric for anions under competition with each other was in following order:
. Also, all results obtained from this study indicate that the
-P removal capacity of PP-g-AA-Am nonwoven fabric was extremely superior to that of PA308 anion-exchange resin.
Occurrence of EDC/PPCPs in Influent and Effluent of a Wastewater Treatment Plant
Lee, Min-Ju ; Ryu, Jae-Na ; Oh, Je-Ill ; Kim, Hyun-Bae ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 783~792
This study investigated 31 selected EDCs(Endocrine Disrupting Compounds) and PPCPs(Pharmaceutical and Personal Care Products) in the influent and effluent of a wastewater treatment plant(WWTP) nearby Seoul metropolitan area. The chemical compounds of EDC/PPCPs detected from the plant influent sample include stimulant, X-ray contrast media and fire retardant. The total amount of each compound class were 59.67%, 20.20% and 9.00% respectively. However, in the effluent sample, the major micropolutants detected were oral beta-blocker(30.54%), fire retardant(20.49%), X-ray contrast media(18.17%). The EDC/PPCPs occurrence levels of this study were somewhat lower than previous domestic studies'. When compared to those of overseas, the values were even lower. Some pharmaceutical compound levels particularly measured in European studies were even several thousand times high. This study then compared PECs(Predicted Environmental Concentration) and MECs(Measured Environmental Concentration) of 9 selected pharmaceuticals compounds. The calculated PECs were substantially different with the MECs, while the occurrence order between the PECs and MECs in terms of concentrations of the compounds were similar.
Removal of Volatile Organic Silicon Compounds (Siloxanes) from Landfill Gas by Adsorbents
Seo, Dong-Cheon ; Song, Soo-Sung ; Won, Jong-Choul ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 793~802
Adsorption properties were estimated for the organic silicon compounds (siloxanes) in an actual landfill gas (LFG) using adsorbents such as coconut activated carbon, coal activated carbon, silica gel, sulfur adsorbent, carbonized sludge, and molecular sieve 13X. Coconut activated carbon showed the highest removal efficiency of more than 95%. The desorption of hexamethyldisiloxane (L2) from the adsorbent, however, resulted in the remarkable concentration variation of the compound in the treated gas. Silica gel, which had high adsorption capacity for L2 in single substance adsorption experiment in the other study, could not remove the component in the actual landfill gas while it adsorbed well octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) in the LFG. Therefore the elimination of hexamethyldisiloxane is an important factor to determine the level of total organosilicon compound in pretreated landfill gas. Moreover, the L2 from the actual landfill gas was effectively adsorbed by the serial adsorption test using two columns packed with coconut activated carbon which has the great capacity of siloxanes removal among others. In order to utilize efficiently LFG as a renewable energy, the emission and adsorptive characteristics of the substance to be treated should be considered for the organization, operation, and management of pretreatment process.
Characterization of Dissolved Organic Matter in Stream and Industrial Waste Waters of Lake Sihwa Watershed by Fluorescence 3D-EEMs Analysis
Lee, Mi-Kyung ; Choi, Kwang-Soon ; Kim, Sea-Won ; Kim, Dong-Sup ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 803~810
This study is conducted to examine spatial variations of Dissolved Organic Matter (DOM) in stream and waste waters of the different watershed areas (agricultural, residential, and industrial complex area) by using fluorescence 3D-EEMs (3 Dimensional Excitation Emission Matrix Spectroscopy). Furthermore, the research investigates the changes of DOM characterization by synchronous and 3D-EEMs during a rainfall event. The characterizations of DOM obtained by 3D-EEMs show two noticeable peaks at humic and protein-like regions. Humic-like substances (HLS) are found in rural and urban areas, and humic and protein-like substances (PLS) are shown in industrial area. According to the fluorescence peak
ratios, it is observed that high amount of HLS was discharged from Banweol Industrial Complex (3TG). Additionally, linear relationships (Regression rate,
=0.66) have been shown between PLS (peak
) and biochemical oxygen demand (BOD), which indicates the impact of sewage. For the rainfall event (30 mm), no remarkable difference of DOM was found at rural area except increment of fluorescence intensity comparing dry period. In contrast, HLS at urban area is highly discharged within 30 minutes from the beginning of rainfall. Also, there are high influences of HLS and PLS within 20 minutes at industrial complex (4TG). Fluorescence 3D-EEMs has not only verifies a watershed of DOM origination but also monitors diffuse and point source impacts.
Study on Environmental Factors for Movable Cultural Properties in Museum
Kim, Il-Kyu ; Seo, Yong-Soo ; Lee, Ju-Hyun ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 811~816
Along with research into the latest preservation treatments for items of cultural heritage, studies of the preservation environment and the effect of damage are also increasing. This study conducted comprehensive research into the temperature, humidity, acids, ammonia, reduced sulfur compounds, aldehydes with various ingredients in the exhibition hall, show case, and storage of three type museum. As a result, temperature, humidity, TVOCs, acetaldehyde frequently exceeded the domestic and international standards for a museum preservation environment and indoor air quality. Also, formaldehyde, chloride, and ammonia exceeded the standards intermittently. Temperature, humidity, TVOCs, acetaldehyde were evaluated to be the major influential factors. In order to control the major factors, apart from temperature and humidity, that cause damage in the museum environment, it is deemed necessary to complement this system with an effective air filter or remover.
Influence of Filtrate Quality by Variation of Operating Filter Number Based on Inflow
Kim, Jin-Keun ; Lee, Jung-Tack ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 817~824
To prevent turbidity breakthrough in a depth filter caused by hydraulic shock loads, influence of turbidity and particle number in filtrate by variation of operating filter number depending on inflow change was investigated. Inflow quantity at the S water treatment plant (WTP) was varied and ratio of maximum/minimum inflow quantity was 2.2, therefore filtration velocity was also subsequently changed. The S WTP changed operating filter number depending on inflow variation to minimize change of filtration velocity. Particle breakthrough was not severe when operation system was changed, out-of-operation and re-start of filter was repeated depending on inflow quantity. Slight particle breakthrough was noticed when re-start of filter was implemented at the filter that had a cumulative filtration run time of less than 10 h or more than 50 h. This can be attributed to the inadequate ripening and over accumulation of particles on media. Therefore, it is more efficient to choose a re-starting filter basin which has cumulative filtration run time more than 10 h or less than 50 h to reduce particle breakthrough. Filter number variation depending on inflow change was proven to be a method for improvement of unit filter run volume (UFRV).
Optimization of LC-MS/MS for the Analysis of Sulfamethoxazole by using Response Surface Analysis
Bae, Hyo-Kwan ; Jung, Jin-Young ;
Journal of Korean Society of Environmental Engineers, volume 31, issue 9, 2009, Pages 825~830
Pharmaceutical compounds enter the water environment through the diverse pathways. Because their concentration in the water environment was frequently detected in the level of ppt to ppb, the monitoring system should be optimized as much as possible for finding appropriate management policies and technical solutions. One Factor At a Time (OFAT) approach approximating the response with a single variable has been preferred for the optimization of LC-MS/MS operational conditions. However, it is common that variables in analytical instruments are interdependent. Therefore, the best condition could be found by using the statistical optimization method changing multiple variables at a time. In this research, response surface analysis (RSA) was applied to the LC-MS/MS analysis of emerging antibiotic compound, sulfamethoxazole, for the best sensitivity. In the screening test, fragmentation energy and collision voltage were selected as independent variables. They were changed simultaneously for the statistical optimization and a polynomial equation was fit to the data set. The correlation coefficient,
valuerepresented 0.9947 and the error between the predicted and observed value showed only 3.41% at the random condition, fragmentation energy of 60 and collision voltage of 17 eV. Therefore, it was concluded that the model derived by RSA successfully predict the response. The optimal conditions identified by the model were fragmentation energy of 116.6 and collision voltage of 10.9 eV. This RSA can be extensively utilized for optimizing conditions of solid-phase extraction and liquid chromatography.