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한국수처리학회(구 한국수처리기술연구회)> 한국수처리학회지> 연구논문 : 폐난각의 소성 온도가 Pb와 Cd 제거율에 미치는 영향

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연구논문 : 폐난각의 소성 온도가 Pb와 Cd 제거율에 미치는 영향

Research Papers : Effect of Pb and Cd removal by various calcined eggshells

최희정 ( Hee Jeong Choi )
  • : 한국수처리학회(구 한국수처리기술연구회)
  • : 한국수처리학회지 22권6호
  • : 연속간행물
  • : 2014년 12월
  • : 111-120(10pages)

DOI

http://dx.doi.org/10.17640/KSWST.2014.22.6.111


목차

1. 서론
2. 재료 및 연구방법
3. 결과 및 고찰
4. 결론
사사
References

키워드 보기


초록 보기

The aim of this study was to investigate the Pb and Cd removal using various temperature calcined eggshell. The experiment was optimized calcined temperature, amount of calcined eggshell, concentration of Pb and Cd. As a pretrement process for the preparation of reused material from waste eggshell, calcination was performed in the furnace 200℃, 400℃, 600℃, 800℃ and 1000℃ for 2h after crushing dried waste eggshell. After calcination, the major inorganic composition was identified as Ca (lime, 99.63% at 800℃) and K, P, Si were identified as minor components and more porosity compared to the other calcined eggshell. Therefore, the optimum temperature of calcination for eggshell was at 800℃. The Pb and Cd less than 5 mg/L concentration was available completely removed by the around 4 times and 6 times amount using calcined eggshell at 800℃, respectively. From the application of calcined eggshell in the treatment of real electroplating wastewater, the calcined eggshell showed a promising removal capacity of heavy metal ions as well as had good neutralization capacity in the treatment of strong acidic wastewater.

ECN

ECN-0102-2015-500-002268102


UCI

I410-ECN-0102-2015-500-002268102

간행물정보

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


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한국학술정보㈜의 모든 학술 자료는 각 학회 및 기관과 저작권 계약을 통해 제공하고 있습니다.

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발행기관 최신논문
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1연구논문 : 소성 처리한 정수슬러지에서 회수한 응집제의 총인 처리시설에서의이용 가능성에 관한 검토

저자 : 서정인 ( Jung In Suh ) , 윤호석 ( Ho Seok Yoon ) , 이택순 ( Taek Soon Lee )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 3-10 (8 pages)

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The objective of this study is to investigate the effects of sintering treatment on alum recovery from waterworks sludge. Results show that organic compounds are removed, while aluminum content is increased by approximately 60% when waterworks sludge is sintered for 2hr under 600℃. Sulfuric acid(3N) leaching for 24hr ratio yielded an aluminum concentration of 39,000 mg/L in the sintered sludge. The concentration of aluminum in sintered sludge was 40% higher than that in non-sintered sludge. Also concentration of aluminum in sintered sludge was 40% higher than that in non-sintered sludge at solid/liquid ratio of 100 g/L. When the coagulant recovered from sintered sludge dosed 0.15 mL/L into the influent of total phosphorus removal process, total phosphorus was below effluent quality limits (0.2 mg/L). These results have demonstrated that sintering could be suitable technologies for extraction of high concentration of aluminum from waterworks sludge by using sulfuric leaching.

2연구논문 : 충진복극전해조를 이용한 수용성절삭유 처리

저자 : 이재용 ( Jae Yong Lee ) , 장성호 ( Seong Ho Jang ) , 홍성철 ( Sung Chui Hong ) , 이병인 ( Py

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 11-21 (11 pages)

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The treatment of water soluble metalworking fluids has been an important environmental issue in recent years due to the extensive use of oil in the metalworking and metal industries, such as vehicle manufacturing industry. Biological treatment and reverse osmosis (RO) technologies have been used to treat water soluble metalworking fluids, but these conventional methods are ineffective in removing organics, T-N, limiting its use for water quality and economic feasibility. One promising alternative is electrochemical process. To attempt to remove contaminants in metalworking fluid by using an electrochemical method. The effects of the packing volume percentage of packing materials, voltage and electrode distance on the process performance were studied. PBBER were formed and applied voltage per packing materials, electrode separation, and removal efficiency and quantity of electricity per concentration were examined. The summary of the examined results are as below. The removal efficiency of CODCr, Oil & Grease and T-N by PBBER showed that 89.6%, 93.5% and 61.9%, respectively and at the highest with 75% of GAC packed, 7 V, 10 mm electrode distance.

3연구논문 : 천연제올라이트(Clinoptilolite)를 이용한 해수중의 암모늄염과 질산염 제거 특성

저자 : 김이태 ( I Tae Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 23-30 (8 pages)

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This study is to evaluate the efficiency of simultaneous removal of ammonium and nitrate by the natural zeolite clinoptilolite in seawater. The natural zeolite clinopilolite is a selective exchange for ammonium cation. First, the different of ammonium exchange of natural zeolite in water and seawater was investigated. The result indicated that the ammonium uptake of the zeolite in sea water is less than water obviously, becase of the competitive exchange of Na+, Mg2+, K+, Ca2+ in seawater. When using only pure natural zeolite, the removal rate of ammonium and nitrate were 52.3% and 7.2%. However, the removal rate of the ammonium and nitrate were 71.5 % and 38.9% by using zeolite inoculated with nitrification and denitrification bacteria in marine aquarium reaction vessel inoculated with microorganisms. And the biologically regenerated zeolite was recovered to 87.7% of ammonium zeolite adsorption capacity of the original, even thought the biofilm was fully developed on the zeolite surface, ammonium removal and the biological regeneration of the zeolite occurred constantly. This result could be used as foundational data to design of ammonium and nitrate simultaneous removal systen in seawater.

4연구논문 : 무한궤도형 철전극 전기분해장치를 이용한 하수중의인제거에 관한 연구

저자 : 송영일 ( Young Il Song ) , 이성기 ( Seong Key Lee ) , 김민규 ( Min Ku Kim ) , 이정수 ( Su Je

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 31-42 (12 pages)

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It was developed an electrolysis device-type with a Fe electrode caterpillar. which was improved some troubles of a Fe electrode. The T-P removal rate was investigated according to various operation conditions. The DO concentration appeared high in electric reactor and effluent. MLSS concentration change was investigated to the things that were not large at iron electrolysis processes. The phosphorus removal rate along HRT this to have appeared high than eight hours in 12 hours is as a phosphorus cohesive reaction consists actively as a cohesion reaction time gets longer. Phosphorus removal rate got almost similar results as a result that the subject experimented on a change with 2500ppm, 3000ppm, 3500ppm with MLSS concentration. Phosphorus removal rate along SRT appeared high. Showed a high phosphorus removal rate within 8day∼10day. As a result of having infused 0.05%, a phosphorus removal rate appeared high with the NaCl concentration that was an electrolyte to 90.5∼94.8%. If this infused an electrolyte, looked that a phosphorus removal speed was fast in the existing study. If phosphorus removal rate appeared by the results low very in experiment-type fixed caterpillar tread of an iron electrode, and do not install an electrode. Showed a removal rate to be higher to 90.5∼96.2%, and were investigated at 86.7∼92.6%, caterpillar tread older brothers at fixed formulas. Connected it of experiment results domestic water and livestock waste water, and process was given to possible things.

5연구논문 : 다공성 격막을 가진 전기응집공정에서 적정 인 부하에 관한 연구

저자 : 김광수 ( Kwang Soo Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 43-52 (10 pages)

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To remove phosphate in 1st clarifier effluent the bench scale experiments were carried out with electrocoagulation process, comparing the existence of porous compartment with it`s nonexistence between positive and negative plates. In case of the nonexistence of porous compartment in electrocoagulation the iron released from positive electrode react not only with phosphate but also hydroxyl ion prodeced from negative electrode. But in case of the existence of porous compartment the released iron from positive electrode react with only phosphate, not contact with hydroxyl ion of negative plate. As a result sludge production in electrocoagulation with porous compartment was decreased to the half of production from noncompartment. In electrocoagulation with porous compartment to remove 1 mg of phosphate was required 5 mg of iron, the optimal HRT for that was 10 min. And also volume loading rate was 1.3 kg P/m3?d for less than 1 mg/L of effluent, 0.3 kg P/m3?d for less than 0.2.

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The EcoTankTM system is a part of the road runoff treatment which uses porous expanded polypropylene (EPP) media with a large surface area to treating the first-flush of stormwater from motorway in field. A series of studies have been carried out concerning the main mechanism of physical characteristics with the filtration and adsorption of EPP media in an EcoTankTM system in order to evaluate the performance risk for treating heavy metals (Cd, Cr, Cu, Pb and Zn) under uncertainty. Under the operating conditions with 0.55 h hydraulic retention time (HRT) and a capable of treating a maximum road runoff of 9.5 m3/h, the mean residual Cd, Cr, Cu, Pb and Zn were 0.3, 3.0, 17.6, 11.2 and 122.2 ㎍/L and the corresponding percentage mean removal values were 93.0, 93.1, 85.1, 91.0 and 84.7%, respectively. Predicting the treatment performance of an EcoTankTM system in stormwater treatment is associated with considerable uncertainty. In view of quantitative and qualitative risk analysis, this study assesses the uncertainty involved in predicting of treating heavy metals from road runoff using an EcoTankTM system. Results (risk probability, Class and risk level) of treatment performance estimation after the treatment of heavy metals (Cd, Cr, Cu, Pb and Zn) using an uncertainty analysis were 50.0% probability (Class 3; moderate) for Cd, 52.0% probability (Class 4; high) for Cr, 47.1% probability (Class 3; moderate) for Cu, 44.4% probability (Class 3; moderate) for Pb and 51.2% probability (Class 4; high) for Zn, respectively. The performance risk values or certainty ranges of all the heavy metal satisfied the acceptable criteria (Class 4; risk level (high); risk ranges (51~70%)). Thus, the performance risk assessment is deemed to be of rational, realistic and practical consideration for treatment system in the wider decision-making context of runoff control and operation management.

7연구논문 : 실험실 규모의 Tankless 정수처리 시스템의수리학적 안정성 평가에 관한 연구

저자 : 정우창 ( Woo Chang Jeong ) , 김관엽 ( Kwan Yeop Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 75-86 (12 pages)

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In this study, the hydraulic stability of lab scale tankless water treatment system was evaluated. This system consists of dummy membrane filtrations, AC filter, backwashing pump, air compressor, supply pump, pressure and flow-rate control valves, water supply tank. The experiments were carried out with 4 cases related to the set-up of pressure, in-going flow-rate and closing status of upper valves of dummy membrane filtration. As the results of experiments, in the case of relatively low preset in-going flow-rate of 10 l/min. the pressure preset from 2.0 bar to 3.0 bar is increased, the flow-rate in the system was stable during the period of experiment but the pressure was very unstable. In the case of the in-going of 20 l/min, the flow-rate and pressure were slightly more stable than the case of the in-going of 10 l/min. In the partially closed case of upper valves of membrane filtrations, the fluid in the system flows with bigger pressure than in the completely opened case.

8연구논문 : 분포형 모델을 이용한 비점오염 산정

저자 : 최윤영 ( Yun Young Choi ) , 이병준 ( Byeong Joon Lee ) , 최정우 ( Jeong Woo Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 87-97 (11 pages)

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To analyze peak flow rate, sediment discharge, and nutriments in the basins, 30 and 70 cells were made in Namchun and Youngchun Dam basins, respectively, and, to subdivide the watercourse direction and slope form of the river, Nam-chun and Youngchun Dam basins were divided into 120 and 208 small grids, respectively, based on finite difference method. The result of goodness of fit test at 5% of significance level in the subject basins showed that Gumbel extreme distribution was suitable. Also, in comparison between the analysis based on HEC-HMS, which is a common method for river outflow interpretation, and the analysis of peak flow rate based on AGNPS-N, the relative error between these two models were 5.4∼6.7% in Namchun basin and 6.6∼7.7% in Youngchun Dam basin, which suggests that the peak flow rate according to the probability year was sufficiently reliable considering the difference between the two models. Prediction of water quality factors (T-P and T-N) in the event of probable precipitation by using the AGNPS-N model seems to be effective for precipitation of 50 years of less in probability years, in terms of probability frequency. In terms of application area, when the basin is large, there is no significant difference in estimates of water quality factors by using this model and the correlation is low. Therefore, caution will be needed when applying it to a large basin.

9연구논문 : 혐기성 소화조 탈수여액의 질산화 과정에서 아질산성 질소 및질산성 질소의 거동에 관한 연구

저자 : 김광수 ( Kwang Soo Kim ) , 안광호 ( Kwang Ho Ahn ) , 서규태 ( Gyu Tae Seo )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 99-110 (12 pages)

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The recycled water with high NH3-N concentration, which was returned to activated sludge from anaerobic digester, was oxidized under the oxic condition and also were investigated on the behaviors of NO2--N and NO3--N in the biological nitrification process. The nitrification rate of NH3-N depends on alkalinity in water and the consumed alkalinity for nitrification of NH3-N was 6-8 mg CaCO3/mg NH3-N. In nitrification of recycled water conducted with no injection of activated sludge NO3--N not exist but NO2--N was detected to the high concentration of 140 mg/L. It was considered to why high alkalinity in recycled water was acclerated the growth of nitrosomonas but inhibit the growth of nitrobacter, oxidizing NO2--N to NO3--N. Therefore, to decrease NH3-N loading rate for aerobic basin of activated sludge process issued from recycle water of anaerobic digester, the optimal process for removal of NH3-N in recycle water was considered the anammox process using NO2- as electron acceptor.

10연구논문 : 폐난각의 소성 온도가 Pb와 Cd 제거율에 미치는 영향

저자 : 최희정 ( Hee Jeong Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 22권 6호 발행 연도 : 2014 페이지 : pp. 111-120 (10 pages)

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The aim of this study was to investigate the Pb and Cd removal using various temperature calcined eggshell. The experiment was optimized calcined temperature, amount of calcined eggshell, concentration of Pb and Cd. As a pretrement process for the preparation of reused material from waste eggshell, calcination was performed in the furnace 200℃, 400℃, 600℃, 800℃ and 1000℃ for 2h after crushing dried waste eggshell. After calcination, the major inorganic composition was identified as Ca (lime, 99.63% at 800℃) and K, P, Si were identified as minor components and more porosity compared to the other calcined eggshell. Therefore, the optimum temperature of calcination for eggshell was at 800℃. The Pb and Cd less than 5 mg/L concentration was available completely removed by the around 4 times and 6 times amount using calcined eggshell at 800℃, respectively. From the application of calcined eggshell in the treatment of real electroplating wastewater, the calcined eggshell showed a promising removal capacity of heavy metal ions as well as had good neutralization capacity in the treatment of strong acidic wastewater.

12
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