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개질한 zeolite를 이용한 중금속제거

Heavy metal removal using modified zeolite

최희정 ( Heejeong Choi ) , 유성환 ( Sungwhan Yu )
  • : 한국수처리학회(구 한국수처리기술연구회)
  • : 한국수처리학회지 23권4호
  • : 연속간행물
  • : 2015년 08월
  • : 15-22(8pages)

DOI

http://dx.doi.org/10.17640/KSWST.2015.23.4.15


목차

1. 서 론
2. 재료 및 연구방법
3. 결 과
4. 토 론
5. 결 론
사 사
References

키워드 보기


초록 보기

The aim of this study was to investigate the heavy metal removal using modified zeolite with magnesium (Mg-zeolite). Mg-zeolite adsorbed two fold higher Cd than that of K-zeolite. In addition, Mg-zeolite adsorbed successfully 100% of the Cd, As, Cu and Mn at the following optimal Mg-zeolite dosage: 30 mg/L for As and Cd, and 15 mg/L for Cu and Mn. The relationship between heavy metal concentration and amount of Mg-zeolite was determined highly linear; 0.9982, 0.9965, 0.9972 and 0.9964 for Cd, Mn, Cu and As, respectively. The bio-adsorbent, Mg-zeolite, can be a promising adsorption due to its high efficiency and low dose requirements. In addition, Mg-zeolite does not contaminate treated wastewater, which can be recycled to reduce not only the cost and the demand for water but also the extra operational costs for reusing wastewater.

ECN

ECN-0102-2016-530-000250757


UCI

I410-ECN-0102-2016-530-000250757

간행물정보

  • : 공학분야  > 환경공학
  • : KCI 등재
  • : -
  • : 격월
  • : 1225-7192
  • : 2289-0076
  • : 학술지
  • : 연속간행물
  • : 1993-2018
  • : 1219


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1수질정화 요소기술의 연계처리를 통한 현장 적용 가능성 평가

저자 : 김봉균 ( Bongkyun Kim ) , 서대석 ( Daeseuk Seo ) , 박준석 ( Junseok Park ) , 손승욱 ( Seungw

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 3-14 (12 pages)

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In recent years, the management of water pollution has been focused mainly on the post-treatment of point pollutions such as urban sewage and industrial waste water. Considerable improvement has been made to the water quality and the reduction of pollution. However, this post-treatment oriented technology has no countermeasures for non-point pollution that occupies considerable portion of water pollution The objective of this study was to investigate on field applicability through linked treatment of element technology for water purification From the field assessment, it was observed that the linked treatment improved the quality of the water and the removal efficiency is SS 41.6%, T-N 37.4%, T-P 40.8%, BOD 55.7.

2개질한 zeolite를 이용한 중금속제거

저자 : 최희정 ( Heejeong Choi ) , 유성환 ( Sungwhan Yu )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 15-22 (8 pages)

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The aim of this study was to investigate the heavy metal removal using modified zeolite with magnesium (Mg-zeolite). Mg-zeolite adsorbed two fold higher Cd than that of K-zeolite. In addition, Mg-zeolite adsorbed successfully 100% of the Cd, As, Cu and Mn at the following optimal Mg-zeolite dosage: 30 mg/L for As and Cd, and 15 mg/L for Cu and Mn. The relationship between heavy metal concentration and amount of Mg-zeolite was determined highly linear; 0.9982, 0.9965, 0.9972 and 0.9964 for Cd, Mn, Cu and As, respectively. The bio-adsorbent, Mg-zeolite, can be a promising adsorption due to its high efficiency and low dose requirements. In addition, Mg-zeolite does not contaminate treated wastewater, which can be recycled to reduce not only the cost and the demand for water but also the extra operational costs for reusing wastewater.

3중소도시 하천의 설계수문량의 평가

저자 : 이호익 ( Hoik Lee ) , 박기범 ( Kibum Park ) , 장인수 ( Insoo Chang )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 23-33 (11 pages)

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In this study, it were evaluated areal floods by frequency floods in river plan reports. The correlations between the river basin areas and the design floods were showed at least 0.94. The results of frequency areal floods by 923 points were appeared to 11.66∼24.45 ㎥/s in Anseong city. The correlations between probability rainfalls and frequency floods were appeared more than 0.94. In the hydrological data 20, 30, 50, 80, 100 and 200 years , respectively, 11.66 ㎥/s, 12.78 ㎥/s, 14.01㎥/s, 15.14 ㎥/s, 15.67 ㎥/s, 17.33 ㎥/s were analyzed, in the case of Small Rivers 20, 30, 50, 80, 100 areal flood frequency ratio is 18.67 ㎥/s, 20.11 ㎥/s, 21.80 ㎥/s, 23.46 ㎥/s, 24.45 ㎥/s indicated by the ratio of the Small rivers areal flood appeared larger than the local rivers. By using a design review hydrological data analyzes presented in this study it is expected to provide the resources to help you prepare flood of Anseong city.

4열처리된 폐콘크리트를 이용한 수용액으로부터 6가 크롬의 흡착 특성

저자 : 강구 ( Ku Kang ) , 김영기 ( Youngkee Kim ) , 박성직 ( Seongjik Park )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 35-46 (12 pages)

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In this study, adsorption characteristics of thermally treated crushed concrete granules (TTCCG) for Cr(Ⅵ) were investigated. Adsorption experiments have been conducted in batch conditions. From the experiments using TTCCG at different temperatures (100, 300, 500, 700, 900 ℃), it was found that the adsorption capacity of TTCCG increased with increasing thermal treatment temperature and TTCCG at 900 ℃(TTCCG900) was shown to be an adsorbent with highest adsorption capacity for Cr(Ⅵ). Kinetic adsorption test and model analysis showed that Cr(Ⅵ) adsorption to TTCCG900 was dependent on both intra-particle diffusion and chemisorption. Equilibrium test demonstrated that the maximum Cr(Ⅵ) adsorption capacity of TTCCG900 was 0.1785 mg/g. Additional batch experiments indicated that Cr(Ⅵ) adsorption to TTCCG900 was the highest at pH 3 and decreased with increasing pH. Also, Cr(Ⅵ) adsorption to TTCCG900 decreased in the presence of anions such as nitrate, sulphate, and phosphate. The Cr(Ⅵ) adsorption to TTCCG900 was less in seawater than in deionized water. This study demonstrated that TTCCG at high temperature could increase its adsorption capacity for Cr(Ⅵ).

5도심 도로면과 건물지붕의 퇴적입자 크기별 다환방향족탄화수소류(PAHs)의 분포

저자 : 이춘식 ( Chunsik Lee ) , 서규태 ( Gutae Seo ) , 윤조희 ( Chohee Yoon ) , 권헌각 ( Heongak Kw

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 47-59 (13 pages)

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This research studied the characteristics of PAHs residual level into deposited sediment on urban road and building roof of two areas which is located in J city. For the results of physical characteristics, an amount of the deposited sediment per area showed 419.02 g/㎡ at industrial area, 102.63 g/㎡ at urban building roof. The content ratio of weight organization by particle-size distribution was confirmed. As the result, industrial area and building rooftop were the highest ratio of weight organization for 106∼ ㎛ grain-size distribution, moisture of building rooftop were highly formed. They were highly in large particle-size ∼ ㎛ ∼ ㎛ distribution. Organic material content was highly measured in large particle-size ∼ ㎛ distribution. For the results of PAHs compound quantitative analysis, pollution concentration and PAHs materials were highly measurement in small particle-size distribution and not more than the value of U.S EPA standard. For the characteristics by area, pollution concentration and PAHs materials were higher measurement in industrial area than building rooftop area, so effects were made on characteristics by area.

6입상활성탄흡착과 막여과공정을 이용한 고도정수처리특성

저자 : 김지연 ( Jiyeon Kim ) , 이형옥 ( Hyeongok Lee ) , 현길수 ( Kilsoo Hyun )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 51-57 (7 pages)

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This study was performed to investigate the characteristics of granular activated carbon (GAC) adsorption and membrane filtration (MF) processes for an advanced water treatment. Influent concentration were on average UV254 0.237cm-1, dissolved organic carbon (DOC) 9.3mg/L, dissolved total nitrogen (DTN) 0.558mg/L and dissolved total phosphorus (DTP) 0.014mg/L, respectively. As a result, MF process compared to GAC adsorption process was slightly effective in removing UV254 and DOC, whereas in removing DTN and DTP, GAC adsorption process was much more effective than that of MF process. Coulped GAC adsorption with MF process achieved good efficiencies more than 50% in removing dissolved organic and nutrients. These results indicate that the introduction of GAC adsorption process prior to membrane filtration process is necessary for an cost-effective advanced water treatment due to efficient reduction of substrate and transmembrane pressure (TMP).

7유기물 제어를 통해 분리막의 fouling을 저감시키는 MBR 공정개발

저자 : 이한슬 ( Hanseul Lee ) , 김진수 ( Jinsu Kim ) , 심재훈 ( Jaehoon Shim ) , 강민구 ( Minkoo Ka

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 69-76 (8 pages)

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The process which apply the Membrane bioreactors(MBRs) provide many advantages over conventional treatment so that process with MBR is being applied for industrial wastewater treatment. However, membrane fouling is main obstacle for application of MBRs because it reduces washing-cycle and productivity. The bio- fouling caused by EPS, NOM, pore size, HRT, etc. In this study, MLE(modified Ludzack-Ettinger) process with adding an aerobic reactor(M2) process operated to control bio-fouling feasibly in MBRs. As install an oxic unit in MLE, COD removal efficiency was more excellent than existing MLE process. Also, the total amount of extracellular polymeric substance(EPS) extracted from M2 reactor was lower concentration than M1. Controlling the EPS, M2 process washing cycle was longer than M1 about a week. It showed that, bio-fouling is influenced by the concentration of EPS and adding an oxic unit to MLE is very effective to control the bio-fouling.

8침지식 미생물연료전지(S-MFC)에서 효율적인 전력생산을 위한 다양한 영향인자 평가

저자 : 김홍석 ( Hongsuck Kim ) , 김병군 ( Byunggoon Kim ) , 이륜경 ( Ryunkyung Lee ) , 김대현 ( Dae

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 77-86 (10 pages)

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Large scale submerged microbial cells (S-MFCs) were evaluated with regard to types of reactors, surface areas of anodes and cathodes and materials of a cathode for improving the power. A settling type (upflow type) showed higher power density than channel type due to the smooth transfer of H+ (proton) and lower internal resistance. At the same surface area ratio of anodes and cathodes (1:1), the power density normalized by the anode surface area (W/㎡) of 1 sheet of an anode (705 cm2) was 5 times higher than that of 4 sheets of anodes (2,820 cm2). Both at the cathode surface areas of 15 cm2 (5×3 cm) and 9 cm2 (3×3 cm), owing to larger contact surface area for the air, a S-MFC which applied 15 cm2 of cathodes showed the improved power density. Also, applying cathodes which use CDI (capacitive deionization) electrode (graphite foil + activated carbon) resulted in higher power density than SUS mesh + expanded graphite + CNT (carbon nano tube) due to the low internal resistance. The results of this study suggest that a cost effective S-MFC could be applied to the large scale of plants with optimum operating condition.

9하수에서 응집제 주입률 자동제어 시스템(CAST)을 이용한 MF 분리막의 막 오염에 관한 응집 전처리 효과에 관한 연구

저자 : 김원경 ( Wonkyong Kim ) , 성윤경 ( Yunkyong Sung ) , 유흥성 ( Hungsung Yoo ) , 박용진 ( Yong

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 87-100 (14 pages)

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A combined system of coagulation and membrane processes was investigated in this study for coagulation pretreatment on the fouling of microfiltration membrane in treating municipal wastewater. Coagulant dosing is traditionally based on jar-tests or operator experience, resulting in either overdosing or insufficient dosing. For reliable purity and accuracy, on-line coagulant control instrumentation is necessary. In this study, we assess the feasibility of a new coagulant dose control instrument, the online charge-based automatic titration system, charge analyzing system with titrator (CAST), to control membrane fouling in microfiltration (MF) process. This paper presents a 100 m3/d pilot for effect of coagulation pretreatment and organic matters (UV254, PO4-P) removal using a coagulation/MF process. To confirm the coagulation effect, the CAST unit was also compared with a control method where coagulants were applied at a constant rate using In-Line Mixer device. For the extension of filtration time required to reach TMP in MF process, the application of CAST unit by applying a CAST Factor can be more useful and effective for reducing CIP cycle time, and energy, water, and chemical consumption than a control unit due to the rapid and accuracy calculation of coagulant dosage.

10공업지역 강우유출수의 PAHs 유출 특성

저자 : 이춘식 ( Chunsik Lee ) , 서규태 ( Gutae Seo ) , 윤조희 ( Chohee Yoon ) , 권헌각 ( Heongak Kw

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 23권 4호 발행 연도 : 2015 페이지 : pp. 101-116 (16 pages)

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The purposes of this research are to grasp physical characteristics of sediments during the dry season, grain-size distribution, accumulation quantity, total content of organic materials andconcentration distribution characteristics of PAHs and runoff concentration characteristics of polycyclic aromatic hydrocarbons compound of rainfall runoff water and PAHs behaviors of early rain treatment facility during the raining season on road surface of industrial area among the several urban spaces and provide basic data for management of PAHs of first rain treatment facility in the future. For the selection of investigation points, 4 points including lots of vehicle floating and particular building were selected during the drying season and southwestern drainage gate of SP industrial complex was selected during the raining season in 336,300㎡ of pure drainage area of SP industrial complex in J city. As a result of quantitative analysis on PAHs compound detected by equipment analysis, 8 items were detected among the 16-PAHs. Vehicles are driven the most actively in industrial area, so pyrene was the highest in all of areas. As a result of quantitative analysis on PAHs in rain runoff water, lots of dying factory, fabric, coal using factory, etc. are located in selected point, so Anthracene was high among the 8 items detected. Thoroughly, there was not a big change by time. For the relations among the rainfall, days of non-rainfall and PAHs, it``s still difficult to judge that days of non-rainfall are related to the concentration of PAHs

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