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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 35, Issue 12 - Dec 2013
Volume 35, Issue 11 - Nov 2013
Volume 35, Issue 10 - Oct 2013
Volume 35, Issue 9 - Sep 2013
Volume 35, Issue 8 - Aug 2013
Volume 35, Issue 7 - Jul 2013
Volume 35, Issue 6 - Jun 2013
Volume 35, Issue 5 - May 2013
Volume 35, Issue 4 - Apr 2013
Volume 35, Issue 3 - Mar 2013
Volume 35, Issue 2 - Mar 2013
Volume 35, Issue 1 - Jan 2013
Selecting the target year
A Study on the Adsorption of Sulfonamide Antibiotics on Activated Carbon Using Density Functional Theory
Jo, Jun-Ho ; Lim, Dong-Hee ; Seo, Gyu Tae ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 457~463
DOI : 10.4491/KSEE.2013.35.7.457
The removal of sulfonamide antibiotics (SAs) by activated carbon was investigated by using granular activated carbon (GAC) tests and density functional theory (DFT) simulations. The GAC absorption tests show the removal efficiency of 68.4~90.7% and 99.0~99.9% in 1 and 24 hours, respectively. In both GAC tests, the removal efficiency of sulfamethazine (SMZ) was the highest followed by those of sulfathiazole (STZ) and sulfamethoxazole (SMTZ): SMZ > STZ > SMTZ. In DFT adsorption simulations, we found that the 4-aminobenzenesulfonamide parts of SMZ and STZ and the 3-methyl-1,2-oxazol-5-amine part of SMTZ are preferentially adsorbed on the edges of graphene model, provided that the adsorbates keep their structures without dissociation upon adsorption process. The adsorption energies of SMZ, STZ, and SMTZ are -4.91, -4.64, and -4.62 eV, respectively. This adsorption strength (SMZ > STZ > STMZ) agrees with the trend of the removal efficiency of SAs by GAC. In addition, dissociative adsorption configurations of SAs are discussed.
Estimation of Resource Efficiency and Its Demand for Photovoltaic Systems Using the Life Cycle Assessment (LCA) Method
Lim, Ji-Ho ; Hwang, Yong-Woo ; Kim, Jun-Beum ; Moon, Jin-Young ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 464~471
DOI : 10.4491/KSEE.2013.35.7.464
In this study, the resource efficiency and future metal resource requirement in photovoltaic (PV) production system were evaluated by using material balance data and life cycle assesment (LCA) method. As a result, in the resource efficiency of ferrous and non-ferrous metal, lead and tin had higher resource efficiency than other materials in all PV systems (SC-Si, MC-Si, CI(G)S, CdTe). In the resource efficiency of rare metals, gallium and rhenium in silicon system and rhenium and rhodium in thin-film system ranked as the first and second high resource efficiency. In case of rare earth metal, gadolinium and samarium took higher resource efficiency. The results of the future metal resource requirement in PV systems showed that 2,545,670 ton of aluminium, 92,069 ton of zinc, 22,044 ton of copper, 1,695 ton of tin and 31 ton of nickel will be needed by 2030 in South Korea, except resource recycling supplement.
Development of Metal Loaded Activated Carbon Fiber for Eliminating Targeted VOCs Originated from Solvent(II)
Choi, Kang-Yong ; Kim, Kwang-Su ; Kim, Tae-Won ; Jun, Min-Kee ; Park, Hea-Kyung ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 472~478
DOI : 10.4491/KSEE.2013.35.7.472
Cu and Cr as a base metal and Pt, Pd as a supportive metal were selected for improving adsorption capacity of activated carbon fiber in eliminating especially targeted VOCs. Preparing variables such as metal loading, loading temperature, loading hours and kinds of loaded metals were changed. Properties measurement was carried out by SEM (scanning electron microscope), XRF (x-ray fluorescence analysis) and EDX (Energy Dispersive X-ray spectrometer) and adsorption capacity evaluation were also performed by gas analyzer. Under this study, the adsorption capacity of complex metal loaded activated carbon fiber was improved positively than that of single metal loaded activated carbon fiber. And we found that the best conditions for metal loading were 5 hours loading time at
and the adsorption capacity was enhanced almost double compared with other condition based activated carbon fiber. Cu-Cr-Pt-Pd loaded activated carbon fiber showed the best adsorption capacity. Also we confirmed that more than 0.5 second is necessary for adsorbate diffusion and adsorption over activated carbon fiber.
Effect of Copper on the Suspended Growth Biological Wastewater Treatment
Seo, Jeong-Beom ; Hwang, Chang-Min ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 479~484
DOI : 10.4491/KSEE.2013.35.7.479
This study was performed to examine the effect of copper on the biodegradability, nitrification, denitrification and oxygen uptake rate (OUR) using batch reactor and continuous flow stirred tank reactor (CSTR) of anaerobic/anoxic/oxic (
). The results of this study can be summarized as follows. In the case of the effect of copper on organic treatment, the bad effect initiated when it was above 4.5 mg/L copper with batch reactor and above 2.0 mg/L copper with CSTR. Concerning the case on nitrification and removal of nitrogen, it showed bad effect when copper was above 4.5 mg/L with batch reactor for nitrification and 1.0 mg/L with CSTR for the removal of nitrogen. The bad effect on the removal of phosphorus began when it was 4.5 mg/L copper with batch reactor and 2 mg/L copper with CSTR. In the case of OUR, it decreased as microbial activity was affected when copper concentration was above 1.5 mg/L in both case of batch reactor and CSTR.
Monitoring and Development of Pretreatment Method for Perfluorinated Compounds in Fish Samples
Heo, Jin-Ju ; Lee, Ji-Woo ; Kim, Seung-Kyu ; Oh, Jeong-Eun ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 485~494
DOI : 10.4491/KSEE.2013.35.7.485
An efficient extraction method was developed for the analysis of 16 perfluorinated compounds (PFCs) in fish samples. We compared the recoveries from the Ion-Pairing Extraction (IPE), Liquid-Liquid Extraction (LLE), Solid-Phase Extraction (SPE), IPE + SPE method with varying the injection time of the internal standard. As a result, IPE method with the internal standard before extraction was evaluated as the most effective pretreatment method. The RPM (Revolution Per Munite) and pH in IPE-before method were additionally adjusted and the more efficient pretreatment method was established. The total 33 fish samples including liver and gut samples were collected from Korean markets and analyzed PFCs with developed pretreatment method of this study. Total 16 PFC levels in fish samples ranged from ND to 1.67 ng/g with 100% detection frequency. The average PFCs concentrations of muscle, liver and gut samples from fish were compared and showed the following trend: liver (17.8 ng/g) > gut (13.3 ng/g) > muscle (1.67 ng/g). The PFC levels in fish samples were similar or lower than other available previous results of foreign studies.
Evaluation of Coagulation-UF Process Considering Residual Aluminuim Concentration as Seawater Desalination Pretreatment
Son, Dong-Min ; Kang, Lim-Seok ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 495~502
DOI : 10.4491/KSEE.2013.35.7.495
This work was performed to investigate proper condition of coagulation treatment as UF process pretreatment that consider UF permeate flux and residual Al concentration. The coagulant used an alum as
and PACl (r = 1.5) made this study. The experiment was tested in adjusting conditions such as alum dose, flocculation time and coagulation pH of seawater. Consequently, higher coagulant dose lead to elevation of UF permeate flux while residual aluminium also increased in condition of pH 8.0. The most suitable condition which has a good permeate flux and low residual aluminium, in this works, was coagulant dose of 0.7 mg/L (as Al, alum) and 1.2 mg/L (as Al, PACl) and coagulation pH 6.5. In addition, applying the flocculation time with 1.2 mg/L of PACI reduced. The flocculation time reduced UF permeate flux in using alum.
Analysis of Microbial Communities in Animal Carcass Disposal Soils
Park, Jeong-Ann ; Choi, Nag-Choul ; Kim, Song-Bae ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 503~508
DOI : 10.4491/KSEE.2013.35.7.503
The aim of this study was to investigate the microbial communities in animal carcass disposal soils to examine the possible threat of pathogens from leachate. DNA extraction was performed for the soils in three carcass disposal sites located in Gyeonggi-do, Korea, and then 16S rRNA pyrosequencing was conducted to identify the microbial communities. Results indicate that, according to phylum classification, Proteobacteria (100%) was identified in soil A, Actinobacteria (66.4%) > Proteobacteria (31.1%) > Bacteriodetes (2.1%) > Acidobacteria (0.3%) in soil B, and Actinobacteria (63.1%) > Proteobacteria (36.9%) in soil C. According to genus classification, Pseudomonas was dominant in soil A (98%), Arthrobacter in soil B (68%) and C (61%). There were no detections of pathogens such as Salmonella, Campylobacter and Clostridium perfringens. However, high concentration of Ralstonia pickettii causing bacteremia was observed. Although carcass disposal soils examined in this study were not highly contaminated with pathogens, further monitoring is still needed to examine the potential threat of pathogens in leachate derived from carcass disposal sites.
Improvement of Medium and Small Urban Stream Water Quality and Applicability of Design Factor Using Biological and Physicochemical Processing
Kim, Moon-Ki ; Choi, Jung-Su ; Kim, Sam-Ju ; Kim, Hyun-Gu ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 509~517
DOI : 10.4491/KSEE.2013.35.7.509
The purpose of this study is to assess the applicability of device-type stream coagulation process which combines physiochemical, biological processing for efficient improvement of water quality in small, middle-sized urban streams. The stream purification facility of this study is compose of pressure flotation type Micro Bubble Process(MBP) to remove TSS and TP and conduit line type Attached Microbial Pipe System(AMPS) to remove BOD. Test conditions of each device were set by floating stay time and change of ultra fine bubble injection amount of MBP, and change of AMPS stay time. Also, removal efficiency of pollution sources of each process were assess by change of season. As result of continuous operation of each process, MBP showed a maximum of TSS 83.69%, TP 95.15% process efficiency and AMPS showed a maximum of 52.95% TBOD5 removal efficiency. Also as result of circular operation of each process, MBP showed a maximum of TSS 69.75%, TP 70.17% process efficiency and AMPS showed a maximum of 68.58% TBOD5 removal efficiency. Therefore, it is considered that this stream coagulation process is effective in improving the water quality of streams in urban areas.
An Experimental Study on the Production Rate and Contaminant Removal of Filtrate in Multi-purpose Filtration Pond
Jeong, Jae-Min ; Choi, Hong-Gyu ; Jung, Kwan-Sue ; Kim, Seung-Hyun ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 518~524
DOI : 10.4491/KSEE.2013.35.7.518
A pilot-scale test-bed was operated employing three soils with different grain sizes dredged from the Nakdong River to obtain the design and operation parameters of the multi-purpose filtration pond, such as the filtrate productivity of the filter sand, the appropriate removal period of the surface clogging and the contaminant removal efficiency. The cross-flow velocities were applied stepwise ranging from 0 to 40 cm/sec in order to simulate the various velocities in the artificial stream of the pond. Results showed that a filtrate production rate of 5~3
was maintained by removing the surface clogging every 7 to 13 days and that the filtrate quality was not affected by the factors of the filtrate production rate, the grain size of the filter sand and the cross-flow velocity. Results also showed that most of the removal occurred within 50 cm of the top soil and that the removal efficiencies with the filtration distance of 2.4 m were 80~95% for turbidity, 20~30% for COD, 75~90% for BOD, 5~20% for total nitrogen and 20~60% for total phosphorus, which suggested that particulate matters had a high removal efficiency.
A Proposition for the Removal of Algae and Phosphorus from River Water Using Multi-Purpose filtration pond
Choi, Hong-Gyu ; Jeong, Il-Hwa ; Bae, Gha-Ram ; Park, Jae-Young ; Lee, Jong-Jin ; Kim, Yong-Woon ; Jung, Kwan-Sue ; Kim, Seung-Hyun ;
Journal of Korean Society of Environmental Engineers, volume 35, issue 7, 2013, Pages 525~531
DOI : 10.4491/KSEE.2013.35.7.525
In an effort to find a solution to the eutrophication of major Korean rivers, a method to utilize multi-purpose filtration pond was investigated. As literature showed that oyster shell is known to be the most adequate for the removal of dissolved phosphorus in Korean rivers, batch and column experiments were performed using oyster shell as an adsorbent in this study. The results of the batch experiment showed that the removal of dissolved phosphorus from river water through adsorption as a way of preventing algal growth was not practical. The results obtained from the column experiment, however, suggested that oyster shell may be utilized as an adsorbent under limited conditions. Based on the results of the experiments a methodology was proposed to remove algae from river water through the use of multi-purpose filtration pond. This method involves mechanically removing the accumulated algae cake from the surface of the artificial stream in the pond towards the condensing part located at the lower reach of the stream, where particles gather before the final removal. In addition, employment of oyster shell as an adsorbent in the condensing part allows prevention of phosphorus released from the dead algae re-entering the river water.