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무정형 알루미늄 산화물에 의한 양이온 중금속의 표면착화
박연종,양재규,최상일,Park, Youn-Jong,Yang, Jae-Kyu,Choi, Sang-Il 한국지하수토양환경학회 2008 지하수토양환경 Vol.13 No.1
국내 화학회사에서 발생되는 연마분진 폐기물에 대한 흡착제로서의 재이용성을 평가하기 위하여 연마분진을 $550^{\circ}C$에서 하소시켜 얻어진 무정형 알루미늄 산화물(AMA-L)을 이용하여 양이온 중금속인 구리, 카드뮴, 납 등에 대한 흡착특성을 파악하였으며 MINEQL + 프로그램을 적용하여 AMA-L과 양이온 중금속 이온간의 표면흡착결합 반응을 모사하여 흡착실험결과와 비교하였다. 구리와 카드뮴, 납의 단일성분에 대한 AMA-L의 흡착실험결과, 납 > 구리 > 카드뮴의 순서로 친화력의 차이가 발생하는 것을 확인하였다. 구리와 카드뮴의 농도변화에 따른 AMA-L 흡착실험 결과 구리와 카드뮴의 농도를 증가시킴에 따라 두 성분의 흡착효율은 모두 감소되는 것으로 나타났으며 구리와 카드뮴이 동시에 존재하는 이성분계 흡착의 경우에는 단일성분으로 존재하는 경우와 유사한 흡착율을 나타내었으며 경쟁이온의 영향을 거의 받지 않는 것으로 확인이 되었다. 또한, AMA-L에 대한 흡착특성에 대한 MINEQL+를 이용한 모사결과 단일성분과 이성분계 흡착에 대한 흡착특성은 비교적 잘 일치하는 것으로 나타났다. The adsorption characteristics of cationic metals such as copper, cadmium, and lead onto the amorphous aluminum oxide, AMA-L, which was mineralized from raw sanding powder at $550^{\circ}C$ were investigated. Additionally, surface complexation reaction of cationic heavy metals onto AMA-L was simulated with MINEQL + software employing a diffuse layer model. From the batch adsorption tests in a single element system, the adsorption affinity of each metal ion onto AMA-L was following order: lead > copper > cadmium. In a binary system composed with copper and cadmium, quite a similar adsorption affinity was observed in each metal ion compared to the single element system. When the surface complexation constants obtained in the single system were used in the prediction of experimental adsorption results, model predictions were well fitted with experimental results of both single and binary systems.
Bl6 Melanoma 세포에서 다시마 열수추출물이 멜라닌 생성에 미치는 영향
박연종,윤미연,임혜원,이지윤,김창종,심상수,Park , Yoon-Jong,Yoon, Mi-Yun,Lim, Hye-Won,Lee, Ji-Yun,Kim, Chang-Jong,Sim, Sang-Soo 대한약학회 2004 약학회지 Vol.48 No.6
To investigate the whitening activity of Laminaria japonicus, we measured the effect of hot-water extracts on melanin production in B16 melanoma cells. Melanocyte stimulating h ormone (MSH, $1{\mu}M$)-stimulated melanin production in B16 melanoma cells was significantly inhibited by fucoidan and hot-water extracts, but not by alginate. The purified tyrosinase activity was not affected by hot-water extracts, alginate and fucoidan. However, tyrosinase expression was significantly inhibited by fucoidan and hot-water extract in Western blot. These results suggest that inhibitory mechanism of hot-water extracts on melanin production may be due to the inhibition of tyrosinase expression but not to direct inhibition of tyrosinase, such an effect of which may be dependent on fucoidan.
재이용한 산업부산물에 의한 비소(V) 이온 흡착능 평가
박연종,양재규,최상일,Park, Youn-Jong,Yang, Jae-Kyu,Choi, Sang-Il 한국지하수토양환경학회 2007 지하수토양환경 Vol.12 No.4
본 연구에서는 화학회사에서 발생되는 연마분진 폐기물의 흡착제로서의 재이용성을 평가하였다. 연마분진을 $550^{\circ}C$에서 하소시킴으로서 유기불순물을 제거하였다. 연마분진내의 주요 무기물은 Al이었으며 하소 후 Al 함량은 29.09%에서 52.73%로 증가되었다. 하소 후 시료의 안정성 평가를 실시한 결과 pH 2.0의 강한 산성조건에서도 모든 중금속들의 용출량은 0.3 mg/L 이하로 나타났다. pH 변화에 따른 As(V) 흡착실험에서 As(V)의 흡착효율은 전형적인 음이 온형 흡착경향을 보였다. 하소된 연마분진의 주입량 변화에 따른 As(V)의 등온흡착 실험결과는 Freundlich 등온흡착식이 Langmuir 등온흡착식보다 상대적으로 잘 표현되는 것으로 나타났다. Freundlich 등온흡착상수 K와 1/n은 각각 4.2442와 0.3161로 얻어졌다. Langmuir 등온흡착식으로 얻어진 하소된 연마분진의 최대 As(V) 흡착량은 13.25 mg/g이었다. 이러한 연구결과, 하소된 연마분진은 안정도 및 As(V) 흡착능을 고려하였을 때 재이용성이 양호한 흡착제로 나타났다. This study provides an attempt to evaluate sanding wastes, generated from a chemical company as a reused adsorbent. Organic impurities in the raw sanding wastes were removed by calcination at $550^{\circ}C$. Aluminum was a major inorganic composition in the raw sanding wastes and increased from 29.09% to 52.73% after calcination. Dissolved concentrations of heavy metals from the calcined sample were below 0.3 mg/L in a stability test at pH 2. From the pH-edge adsorption experiments with the calcined sanding wastes, As (V) was found to follow an anionic-type adsorption. Adsorption isotherm obtained with variation of the dosage of the calcined sanding wastes was better described by Freundlich equation than Langmuir one. Freundlich constants of K and 1/n were 4.244 and 0.316, respectively. The As (V) adsorption capacity of calcined sanding wastes estimated from Langmuir isotherm was 13.25 mg/g. From this study, the calcined sample was identified as a good reusable adsorbent in the view point of stability and adsorption capacity on As (V).
침지형 한외여과 막공법과 역삼투 공법을 이용한 하·폐수처리
최희정(H J Choi),박연종(Y J Park),이승목(S M Lee) 大韓環境工學會 2012 대한환경공학회지 Vol.34 No.10
세계적인 물부족을 해결하는 대안 중의 하나는 하수 재이용이다. 본 연구는 A시의 하수를 UF와 RO 공법으로 처리하여 인근지역의 공업용수로 재사용이 가능한지의 여부를 확인하고자 하였다. A시의 하수를 UF와 RO로 처리한 결과 Na, Mg, Cl, Ca, Mn, PO₄, SO₄ 등은 원수 대비 97% 이상의 높은 처리 효율을 보였으나, NH₄-N, TN, NO₃-N, BOD 등의 영양염류는 각각 35.71%, 85.21%, 87.05% 그리고 56%로 상대적으로 낮은 제거율을 보였다. 그러나 영양염류는 원수 자체의 함유량이 소량이여서 하수 처리수 공업용수 재이용수질 권고 기준을 만족하는데 문제가 없었다. 그 외의 측정항목 또한 하수 처리수 공업용수 재이용수질 권고 기준을 만족하여 인근지역의 공업용수로 재사용에는 문제가 없을 것으로 예상된다. One of alternatives to solve the global water shortages is the reuse of wastewater. The aim of this study was to evaluate whether it can be reused for industrial water from wastewater in “A” City with ultrafiltration (UF) and reverse osmosis (RO) process. The results obtained in this study were that the inorganics such as Na, Mg, Cl, Ca, Mn, PO₄, SO₄, etc. were removed with high treatment efficiency (more than 97%), respectively. However, the removal of NH₄-N, TN, NO₃-N, BOD was found to be 35.71%, 85.21%, 87.05% and 56%, respectively. The removal efficiency of nutrients was relatively low compared to other metal ions. Despite low nutrients removal, the treated wastewater is recommended to reuse, because the nutrient contents in influent from the secondary wastewater treatment plant were small amount. In addition, all other metrics in the wastewater were found to be lower amount than wastewater reuse criteria. Therefore, the wastewater treated by UF-RO could be sufficient to reuse for industrial waster.
D. Harikishore Kumar Reddy,이승목,양재규,박연종 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
Binary metal oxide beads were fabricated by using aluminum oxide (industrial waste) and titanium dioxide using boehmite as binder, as prepared material exhibited photocatalytical oxidation property and good adsorption efficiency. The synthesized beads were characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and Scanning Electron Microscopy coupled with Energy dispersive spectroscopy (SEM-EDX) to investigate the functional groups, crystalline phase and morphology of the as prepared materials. Photocatalytic oxidation of As(III) took place rapidly and followed first-order kinetics. The results indicated that as prepared composite is a promising material for As(III)and As(V) removal from arsenic-contaminated water.
유기견운모 센서를 이용한 As(III) 측정 최적 조건 연구
김무늬 ( Munui Kim ),양재규 ( Jae-kyu Yang ),박연종 ( Youn-jong Park ),이승목 ( Seung-mok Lee ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.3
In this study, the optimum conditions of working electrode with using organo-sericite was evaluated for the determination of As(III). The experimental results indicated that the peak currents of As(III) were increased as the size of sericite powders which were mixed in manufacturing for the organo-sericite electrode was decreased. The currents using polyether ether ketone (PEEK) as a support material for the electrode was considerably enhanced 12 times higher than that of the teflon material. The mixing ratios of raw materials for manufacturing the electrode were varied and the optimum ratio was obtained as the nujoil oil was 1.5 g and the organo-sericite was 15 wt%. Under the obtained optimum conditions, the peak currents were correlated well with the concentration of As(III) and it showed that As(III) levels down to 1 ppb were successfully analyzed. It concluded that the organo-sericite could be applied well to the determination of trace level of As(III) in aqueous solution.