서산ㆍ태안 지역의 대기질 현황과 경향

손병현,김종호 한서대학교 산학협력연구원 부설 환경연구소 2000 환경연구소 논문집 Vol.3 No.-

This study was performed to evaluate the characteristics of current air quality and to examine the hourly, monthly, and yearly variation of SO₂, O₃, CO, NO₂, and particulate matter concentration at Seosan·Taean areas for the periode 1996-1999. Between 1996 and 1999, hourly and monthly mean concentration of SO₂at Seosan Dokgodri was higher than the other stations and NO₂ was higher at Seosan Dongmundong. The number of days exceeding 24-hour standards for PM-10 was 30 at Seosan Dokgodri. The number of sampling days exceeding the 8-hour standards for O₃ were 21 at Sesan Dongmundang and 44 Seosan Dokgodri. The observed variations in pollutants were largely a results of seasonal differences in weather conditions. The highest concentration of O₃ was measured in summer, while CO and NO₂ were showen highest concentration in winter. The air pollutants, at all points, were not exceeded the air quality standards.

제강 전로 Slag 복토재의 중금속 흡착 특성 연구

손병현,조용말,오광중,정종현 부산대학교 환경문제연구소 1995 環境硏究報 Vol.13 No.-

It has been known that blast furnace slag has abilities to remove heavy metal ions like Cd??,Cr??, and Cr?? in wastewaters and leachate. However the removal efficiency by basic oxygen furnace process slag has not been reported. The removal chcracteristics of heavy metals on BOF-Slag were investigated to develop the landfill leachate attenuation process by the slag cover soil. Specific surface area and pore volume of the BOF-Slag were in the range of 20.27-41.43㎡/g and was increased with decreasing of the particle size. The removal rates of Cr??, Zn??, and Pb?? were affected by reaction temerature, slag particle size, and pH of various heavy metal solution but the effect of temperature was negligible. Freundlich isotherm data indicated that BOF-Slag provided better sorptive for Cr??, Zn??, and Pb?? than BF-Slag did. These results were utilized in developing suggestions for the disposal of industrial waste sludges and dusts in sanitary landfills and for the use of BOF-Slag cover soil.

차량정비공장에서의 공기중 오염물질에 관한 조사 연구

손병현,정종현 한서대학교 산학협력연구원 부설 환경연구소 1988 환경연구소 논문집 Vol.1 No.-

This study was performed to evaluate the exposure levels of workers exposed to airbone pollutants in Vehicle Maintenance Factory. The airbone pollutants, at all workplace, were not exceeded TLV. Results of this study were as follows; 1. At solvent-cleaning workplace, the benzene, toulene, and xylene concentrations were 12ppm, 35ppm, and 45ppm respectively. 2. The CO₂ concentrations of unit workplaces were as follows; 395ppm at alkali-cleaning workplace, 52ppm at solvent-cleaning workplace, 398ppm at oil-grinding workplace, 635ppm at film-printing workplace, and 854ppm at welding workplace, and 1.87ppm at film-printing workplace. 4. The nise level of unit workplaces were as follows; 66dB(A) at alkali-cleaning workplace, 61dB(A) at solvent-cleaning workplace, 76dB(A) at oil-grinding workplace, 69dB(A) at welding workplace, and 82dB(A) at film-printing workplace. 5. The dust concentrations of unit workplaces were as follows; 0.54㎎/㎥ at alkali-cleaning workplace, 0.78㎎/㎥ at solvent-cleaning workplace, 0.12㎎/㎥ at welding workplace, 0.43㎎/㎥ at film-printing workplace, and 3.4㎎/㎥ at oil-grinding workplace. Based on the results of the study, in order to protect workers, it is recommended ot construction such ventilation system as portable and canopy hood at all workplace.

잠김 금속판을 이용한 대퇴골 전자하 골절의 치료 : 압박 고 나사와 비교

손현철, 김용민, 김동수, 최의성, 박경진, 조병기, 박지강, 배승환 충북대학교 의과대학 충북대학교 의학연구소 2011 忠北醫大學術誌 Vol.21 No.2

-본문참고-

Fly Ash를 이용한 흡수제의 SO_2/NO_x 동시제거

정종현,손병현,유경선,김현규,이형근 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.3

본 연구에서는 비산재를 첨가한 개량흡수제를 이용하여 황산화물과 질소산화물을 동시에 제거하기 위하여 고정층반응기 실험을 수행하였으며, 제조한 혼합흡수제는 SEM-EDX, ICP, BET, XRD 등을 이용하여 물성분석을 수행하였다. 소성한 석회석에 비산재를 혼합하여 수화시킨 'fly ash 개량흡수제'는 SO_2와 NO_x를 동시에 효율적으로 제거할 수 있었으며, 비산재를 첨가하여 제조한 개량흡수제가 첨가하지 않은 흡수제에 비하여 SO_2와 NO_x 동시제거에 더 효과적이었다. 이러한 실험결과는 석회석과 개량흡수제에 비산재의 첨가로 인하여 규산캄슘 등과 같은 수화물 생성으로 인하여 포졸란반응이 유도되어 'fly ash 개량흡수제'의 비표면적과 흡습성 등이 증가되었기 때문이다. 또한, 비산재를 SO_2 및 NO_x 동시제거용 첨가제로 활용하기 위한 비산재와 개량흡수제의 최적 첨가비율은 1:9인 것으로 나타났다. The simultaneous removal of SO_2 and NO_x by advanced absorbent from coal fly ash was examined in a packed bed reactor. Also, the physicochemical properties of prepared absorbents have been measured using ICP, BET, SEM-EDX and XRD. We have found that both SO_2 and NO_x in dimulated flue gas can be effectively removed by use of fly ash advanced absorbent which was prepared by hydration of calcined limestone with or without coal fly ash. The addition of fly ash into the absorbents can result in the highly efficient simultaneous removal of SO_2 and NO_x from simulated flue gas. This is because the addition of fly ash into limestone and advanced absorbent increases the specific surface area and hygroscopicity of fly ash advanced absorbents by pozzolanic reaction which leads to the formation of calcium silicate compounds. The test results indicated that the optimal mixing ratio of fly ash to advanced absorbent sample is about 1:9 for the effective removal of SO_x/NO_x.

부산·경남지역의 토양오염물질간의 상관도에 관한 연구

주유연,조상원,오광중,손병현 부산대학교 환경문제연구소 1994 環境硏究報 Vol.12 No.-

It appeared over all regions expect common life area that the pollutants level of soil heavy metals in Pusan and kyoung-Nam Province, was higher than the standard on in agriculture area. Especially, Atmosphere and waste area appeared much high and it necessitates monitoring these areas continually. Where we analyzed pollutants level of heavy metals in paddy soils in correspondence with Pusan, Ulsan, and Yangsan region, the order of Pb and Cd concentration were Yangsan 〉 Pusan 〉 Ulsan, the order of Cu and Zn were Yangsan 〉 Ulsan 〉 Pusan, the order of Hg and As were Ulsan 〉 Yangsan 〉 Pusan respectively. It appeared the whole concentration of heavy metals expect Hg and As were the highest ones in Yangsan. So, it was thought that special management should be needed. The analysis of correlation between heavy metals in soil showed that the correlation level between Cd and Pb, Cu and Pb and Zn, Hg and As was high in agricultural area and the correlation level between Zn and Pb, Cd and Hg, Cd and Cu was high but the one between Cd and As was low in atmosphere area. And the correlation between Pb and Cd, Hg and Zn, Hg and Cu was high but the one between Hg and Cu was low in waste area and the correlation level between As and Pb, As and Zn was slightly high but the one between Cd and Cu is low in water area.

슬관절에 히야루론산 주입후 발생한 활막성 연골종증 : 증례 보고

최의성,김용민,김동수,손현철,박경진,조병기,배승환 충북대학교 의과대학 충북대학교 의학연구소 2009 忠北醫大學術誌 Vol.18 No.2

활막성 연골종증은 비교적 드문 양성 종양으로 관절내 활액막 결체조직의 양성 반응성 이형성에 의해 여러 개의 연골성 결절을 형성하고 이것이 관절내로 유리되어 유리체를 형성하는 질환으로 주로 슬관절에 발생한다. 활막성 연골종증의 정확한 발생 기전은 아직 밝혀지지 않았으나 외상, 감염 등이 원인으로 제시되고 있다. 저자들은 슬관절 내 히야루론산 주입후 발생한 슬관절내 활막성 연골종증을 1 례 경험하였으며, 관절경적 제거술을 통해 만족스런 결과를 얻었다. As a relatively rare benign tumor, synovial chondromatosis forms several cartilaginous nodules by the benign reactive metaplasia of synovial connective tissues within joints, which are loosed into the joints and cause a disease forming loose body mainly in knee joint. Accurate mechanism of synovial chondromatosis has not been clarified yet; however, trauma, infections and others have been suggested as its possible causes. The authors of this study experienced an example of a patient with synovial chondromatosis in knee joint occurred after the injection of hyaluronic acid in the joints and had a satisfactory outcome through the arthroscopic resection.

전로제강 슬래그(BOF-Slag)를 이용한 고온탈황에 관한 연구

오광중,정덕영,최성원,조상원,손병현 釜山大學校生産技術硏究所 1996 生産技術硏究所論文集 Vol.51 No.-

고온 석탄연료가스의 탈황에 BOF-Slag의 이용가능성을 실험해 보았다. BOR-Slag의 온도, 유량, 탈황제의 특성등이 H₂S 제거효율에 미치는 영향을 조사해 본 결과, 최적의 H₂S 제거효율은 700℃에서 이루어졌고 입자크기가 작을수록 황포집능은 향상되었으나 0.214-0.631mm에서는 큰 영향이 발견되지 않았다. 조업온도 800℃이상에서는 탈황제의 응집으로 내부물질전달저항이 증가하여 탈황제의 반응성이 저하되었다. Experiments have been made to test the practical feasibility of using BOF-Slag to desulfurize hot coal-derived fuel gas. In this study, the effects of particle size, temperature, flow rate and sorbent characteristics on the H₂S removal efficiency of BOF-Slag were investigated. Experimental results showed that the removal efficiency of H₂S was optimum when the temperature was about 700℃ and the smaller sample size, the better sorbent capacity had and the sample size in the range of 0.214∼0.631mm didn't influence. When the temperature was above 800℃, the reactivity of sorbent has lowered because agglomeration of sorbent increased intraparticle transport resistance.

Effects of Hcl on The Performance of Mn-Based Sorbents At High Temperature H₂S Removal Process

Byung Hyun Shon,Jong Hyeon Jung,Gang Woo Lee,Kwang Joong Oh 대한환경공학회 2003 Environmental Engineering Research Vol.8 No.5

A Study on the Preparation of Precipitated Calcium Carbonate from Steelmaking Slag

Byung-Hyun, Shon 국제문화기술진흥원 2022 International Journal of Advanced Culture Technolo Vol.10 No.1

After extracting the calcium component from the KR slag and the converter slag using ammonium chloride solution, the extract was reacted with carbon dioxide to synthesize precipitated calcium carbonate (PCC). In order to understand the effect of ultrasonic waves on calcium extraction from slags and calcium carbonate synthesis, the efficiency of calcium carbonate synthesis according to the with or without of ultrasonic waves was analyzed. The synthetic efficiency of PCC was investigated according to various experimental conditions, and the synthesized calcium carbonate was analyzed using XRD and SEM. In both slags, the amount of PCC decreased as the reaction temperature increased. The pH at the end of the experiment capable of synthesizing the maximum PCC in the carbonation reaction was 7 (irradiated with ultrasound) and 8 (irradiated without ultrasound), respectively. Because the pH of the extraction filtrate is different when irradiated with or without ultrasound, the pH was adjusted to 9 by injecting an additive (10 M NaOH) before the carbonation experiment, and then the experiment was performed. When calcium was extracted from KR slag, the crystal phase appeared as calcite regardless of the pH at the end of the experiment. However, when calcium was extracted from the converter slag and the pH was set to 7 at the end of the experiment, the crystal phase of PCC appeared as a mixture of calcite and vaterite.