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수록정보
수록범위 : 1권1호(2000)~20권3호(2019) |수록논문 수 : 996
한국환경기술학회지
20권3호(2019년 06월) 수록논문
최근 권호 논문
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KCI후보

1꼬막 패각의 재이용을 위한 최적 산세척 방법의 결정

저자 : 서하나 ( Hana Seo ) , 김유경 ( Yugyung Kim ) , 박영선 ( Yeongseon Park ) , 공병욱 ( Byeongwook Kong ) , 라덕관 ( Deog-gwan Ra ) , 정정조 ( Cheongjo Cheong )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 147-152 (6 pages)

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The purpose of this study is to investigate most effective cleaning method with the kinds and concentrations of acid and reaction time for reuse of waste ark shell. Whiteness and compressive strength were tested before and after acid cleaning. The whiteness change of ark shell and granular ark shell was showed little difference between HCl and HNO3. Whiteness was the highest when acid : H2O = 1:20. The change of whiteness according to the reaction time was not significantly difference. Compressive strength of the ark shell and granular ark shell was lower HNO3 than HCl. And the compressive strength reduction rate was did not show a clear trend in the ratio of acid concentration and reaction time. Changes in whiteness and compressive strength of acid washing were found that the shells from restaurant were superior. On the other hand, ark shell collected from the B-storage yard was found that the whiteness was improvement only by water washing without acid washing. It is considered that the effective method of improving whiteness and maintaining the compressive strength is when the ratio of HNO3 : H2O = 1:50 for 10 minutes.

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2기후변화 시나리오 기반의 지역규모 온난화에 관한 연구: 목포시를 대상으로

저자 : 김도용 ( Do-yong Kim )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 153-159 (7 pages)

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In this study, projected regional warming in Mokpo city was investigated using RCP 4.5 and RCP 8.5 climate change scenarios. Air temperature showed decadal variations of +0.28 ℃ (RCP 4.5) and +0.66 ~ +0.69 ℃ (RCP 8.5). The temperature in the late 21st century is expected to rise 1.7 ℃ (RCP 4.5) and about 4 ℃ (RCP 8.5). Annual summer days presented decadal variations of +3.45 days (RCP 4.5) and +7.24 days (RCP 8.5). The summer days in the late 21st century are predicted to increase 20.8 days (RCP 4.5) and about 1.4 months (RCP 8.5). Annual heat wave days showed decadal variations of +3.08 days (RCP 4.5) and +9.09 days (RCP 8.5). The heat wave days in the late 21st century will be approximately 4.7 times (RCP 4.5) and 7.3 times (RCP 8.5) longer than the heat wave days in the early 21st century. Annual tropical night days presented decadal variations of +5.22 days (RCP 4.5) and +9.64 days (RCP 8.5). Compared to the tropical night days in the early 21st century, the tropical night days in the late 21st century are expected to increase approximately 3.6 times (RCP 4.5) and 3.9 times (RCP 8.5).

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3로우볼륨 에어샘플러를 이용한 안성지역 대기 중 PCBs 농도특성 분석

저자 : 천만영 ( Man-young Chun )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 160-168 (9 pages)

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This study was carried out to evaluate the characteristics of atmospheric PCBs concentrations and their reductions tendency in the Anseong area. The air samples were collected using two low-volume air samplers (LVAS) for 4 weeks. Total 82 PCB congeners were sought and 65 congeners were detected. The average total atmospheric PCBs concentration was 58.55 pg/㎥. The lower molecular weight was, the higher became the concentration. The fraction of homologue concentration was 50.4 % for MonoCB and the fracton of homologue below PentaCB was 97.5 %. The average of TEQ was 2.71 fg-WHO TEQ/㎥, which was higher than that of the background region and slightly lower than that of the remote region. The ratios of total PCBs concentration of 2005, 2012 and 2018 to that of 2001 were 0.916, 0.055 and 0.044 respectively, which shows a continuously reduction tendency of atmospheric PCBs from 2001 with a particularly sharp slope from 2005.

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4EM 담체를 사용한 침지여상에서 담체의 충전율과 내부순환율이 질소, 인 제거에 미치는 영향

저자 : 김영규 ( Young-kyu Kim ) , 배수현 ( Su-hyun Bae ) , 유찬서 ( Chan-seo You ) , 정정조 ( Cheong-jo Cheong ) , 라덕관 ( Deog-gwan Ra )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 169-177 (9 pages)

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Experiments were carried out to determine the removal efficiencies of nitrogen and phosphorus in submerged biofilter with EM media. The obtained results were as follows. On the condition of 100 % media packing and 100 % internal recycle, the nitrogen removal efficiencies of EM media and crushed stone were shown to be 97.5 % and 78.8 %, and phosphorus removal efficiencies of these were 96.7 % and 48.1 %, respectively. The effect of media packing ratio on the removal efficiencies of nitrogen and phosphorus was negligible in EM media, but it was greatly influenced in crushed stone. Additionally, the removal efficiencies of nitrogen and phosphorus due to internal recycle ratio were significantly higher in the EM media than in the crushed stone. The removal efficiency of nitrogen was 52.3~74.3 % for EM media and 8.9~33.6 % for crushed stone. The removal efficiency of phosphorus was 70.2~78.7 % for EM media and 7.4~21.6 % for crushed stone, respectively. The removal efficiencies of nitrogen and phosphorus in submerged biofilter were found to be influenced by the internal recycle ratio more than media packing ratio.

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5GMA 광그라프트 중합과 화학적 표면개질을 통한 흡착/항균 기능성 여과소재 개발 및 성능평가

저자 : 나춘기 ( Choon-ki Na ) , 박가연 ( Ga-yeon Park ) , 송재준 ( Jee-june Song )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 178-186 (9 pages)

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Biofouling has been a major problem in the application of separation/filtration technology in water and wastewater treatment. In this work, a novel filtration material with adsorption/antibacterial properties was developed by surface modification of polypropylene (PP) nonwoven fabric, using a process which involved UV-induced graft copolymerization of glycidyl methacrylate (GMA), and amination or sulfonation of the grafted GMA groups. GMA was effectively grafted onto PP by photografting polymerization. The grafted GMA groups were easily converted into amine groups or sulfonic acid groups upon reaction with ethylenediamine (EDA) or sodium sulfate solution. The modified PP fibers were characterized by means of FT-IR, SEM, adsorption tests, and antibacterial tests. We found that the aminated or sulfonated PP-g-GMA fabric possessed high adsorption capacity and highly effective antibacterial activities against both E. coli and S. aureus.

KCI후보

6Alum와 PAC을 이용한 하수처리장의 총인 저감 효율 향상을 위한 운영개선

저자 : 김희준 ( Hee-jun Kim ) , 천경호 ( Kyeong-ho Cheon ) , 김민수 ( Min-su Kim ) , 윤덕노 ( Duck-no Youn ) , 원건희 ( Geon-hui Won ) , 최용 ( Yong Choi ) , 조홍식 ( Hong-sik Cho ) , 유정희 ( Jeong-hee Yoo ) , 이자영 ( Ja-young Lee ) , 이희재 ( Hee-jae Lee ) , 지석인 ( Seok-in Jee )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 187-191 (5 pages)

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This study is to minimize the cost of facility investment and to stabilize the water quality and to reduce the cost in the public sewage treatment facility. A simple test was carried out in the field to estimate the amount of ploy aluminum chloride (PAC) and for the purpose of determining injection of PAC. Removal of total phosphorus (T-P) showed 21.9 % reduction efficiency at 5 mg/L of PAC injection, and 35.9 % and 36.9 % reduction of 7.5 mg/L and 12 mg/L, respectively. After confirming the data of January 2016 before the injection of PAC and January 2017 after injection, T-P reduction checked the I public sewage treatment plant of effluent data. The maximum effluent water quality of T-P in January 2016 was 0.187 mg/L, and the maximum effluent water quality of T-P in January of 2017 was 0.051 mg/L, which was relatively low effluent water quality. In addition, the operation cost is relatively decreased when PAC is injected only during the winter season than when the PAC is injected during the year. Therefore, in order to overcome the degradation of coagulation efficiency at low temperature water. It was concluded that PAC was injected only in winter season to improve water quality and reduce operating cost.

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7폐어구류로부터 제조된 고형연료제품의 품질평가에 관한 연구

저자 : 김대기 ( Daegi Kim ) , 김도용 ( Do-yong Kim )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 192-197 (6 pages)

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The quality evaluation of solid refuse fuel made from fishing wastes in coastal area was performed in this study. The composition ratios of water, ash and combustible components were analyzed, and the average values were 2.6 %, 8.8 % and 88.6 %, respectively. The lower heating values(average 7,438 kcal/kg) were evaluated over twice values of the quality standard. The Cl and S contents were represented as the very low levels, and the average values were 0.14 % and 0.04 %, respectively. For the metal components, the average concentrations of Hg, Cd, Pb and As were 0.12 mg/kg, 0.42 mg/kg, 27.2 mg/kg and non-detection, respectively. Thus, the solid refuse fuels made from fishing wastes came up to the quality standards, and also evaluated as the effective renewable energy resource.

KCI후보

8고함철 단광 제조를 위한 제강부산물의 물리화학적 특성

저자 : 임승주 ( Seung-ju Lim ) , 윤형선 ( Hyung-sun Yoon ) , 서성규 ( Seong-gyu Seo )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 198-203 (6 pages)

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In this study, the physico-chemical characteristics of the steel by-products(SS, SCS, SLD, and BSD) were investigated by the analyses of ICP, EA, PSA, SEM and XRD. The T-Fe content of the steel by-products was the highest at 78.3 % in the SLD, 75.1 % in the SCS, 71.9 % in the SS, and 64.2 % in the BSD. The steel by-products contents were in the order of MgO < SiO2 < CaO < M-Fe < T-Fe. The elemental analysis showed the highest nitrogen content in the SS, the carbon component in the BSD, the hydrogen component in the SCS, the sulfur component in the SLD. The average contents of steel by-products were higher in the order of nitrogen < sulfur < hydrogen < carbon. The particle size distribution and particle size were in the order of SLD < SCS < BSD < SS as average particle size. SEM analysis showed that the steel by-products was close to a round plate-like image. In the XRD analysis, the crystal structure of FeO was mostly shown, and some crystal structure of Fe2O3, Fe3O4 was also confirmed.

KCI후보

9전기비저항탐사와 시추조사에 의한 저수지 제방의 누수 구간 결정

저자 : 정웅원 ( Woong-won Jeong ) , 김민환 ( Min-hwan Kim )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 3호 발행 연도 : 2019 페이지 : pp. 204-212 (9 pages)

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It is necessary to judge in advance whether there is a physical or functional defect in the aging reservoir embankment. This should prevent disasters and, if necessary, repair or reinforce them to enhance the stability of the reservoirs and promote public safety. For this purpose, it is necessary to check the leakage of the reservoir bank. A visual survey of the reservoir embankment, electrical resistivity survey, and drilling survey were carried out to determine the mutual relationship. First, visual inspection and electrical resistivity survey were carried out on the leakage of reservoir bank. As a result of electrical resistivity survey, the resistivity band, which is expected to be the saturation of the blue series, was widely measured at the dam crest line. In the downstream slope line, the expected resistivity range as saturated with the blue series was measured extensively. This shows the relationship of leakage between the dam crest and downstream slope line. The relationship between visual inspection and electrical resistivity survey results was estimated. The drilling survey was carried out in order to obtain the reliability of the electrical resistivity survey results. In this study, the permeability coefficients of the embankment layer and the center clay(8.96×10-4 cm/s, 5.18×10-4 cm/s) were found to be larger than the target value(2.0 × 10-4 cm/s). The reservoir embankment need to be improved.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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(2006)홍길동41회 피인용

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