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- 저자 : 장윤득 ( Yun Deug Jang ) (검색결과 7 건)
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산화제 NaOCl와 $H_2O_2$를 이용한 광산배수 정화에 관한 연구
최승원,장윤득,김영훈,김정진,Choi, Seung-Won,Jang, Yun-Deug,Kim, Young-Hun,Kim, Jeong-Jin 대한자원환경지질학회 2010 자원환경지질 Vol.43 No.1
Mine and leachate waters were collected from the Okdong mine for study on reaction with oxidizing agents such as NaOCl and $H_2O_2$. The pH and EC of the mine and leachate waters are 5.77, 831 uS/cm, and 6.38, 1920 uS/cm, respectively. The concentrations of Mg, Mn, and Zn are 23.25 mg/l, 14.90 mg/l, and 22.99 mg/l for the mine water and 98.75 mg/l, 3.38 mg/l, and 6.16 mg/l for the leachate water. The concentrations of Mg, Mn and Zn decreased after the reaction with the oxidizing agents and mine water. The concentrations of Mg, Mn and Zn rapidly decreased when oxidizing agents increased. The saturation indices that were computed by visual MINTEQ for initial mine and leachate water were undersaturated with Mg, Zn and Mn compounds. The precipitates after the reaction with the oxidizing agents are composed mainly of mangano-calcite[(Mn, Ca)$CO_3$] with small amount of calcite-magnesian and calcite.
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폐광산으로부터 유출되는 산성광산배수 중화처리를 위한 반응조 실험 연구
강한,박성민,장윤득,김정진,Kang, Han,Park, Seong-Min,Jang, Yun-Deug,Kim, Jeong-Jin 대한자원환경지질학회 2008 자원환경지질 Vol.41 No.1
Two types of reactor were designed to neutralize acid mine drainage flow from closed mine. Limestone used as a neutralizer, which composed mainly of calcite with small amount of dolomite. In general, the effect of neutralization depended upon both the position of reaction and the amount of supply of neutralizer. It was observed that the neutralization was enhanced as the reaction with acid mine drainage occurred at the upper part of reactor with sufficient supply of neutralizer. When the reaction was sustained in upper part of the reactor, the neutralizer was not affected by precipitates and the reaction could last until all of neutralizer was consumed.
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영양 용화광산의 광미 및 침출수의 광물학적 및 지화학적 특성 연구
강한,김영훈,장윤득,김정진,Kang, Han,Kim, Young-Hun,Jang, Yun-Deug,Kim, Jeong-Jin 대한자원환경지질학회 2012 자원환경지질 Vol.45 No.3
Current study includes the analysis of mine tailings and leachate water and prediction of species originated from the tailings. The variation of contaminants were measured upon the distance from the tailings to the nearby stream. The ions concentration was highest at the tailings and pit mouth and it becomes lower as it goes far away from the origin. This is the reason that the leachate was diluted with the uncontaminated stream water. The tailings were mainly classified into reddish one and yellow one. The main mineral of reddish tailings were quarts, illite, plumbojarosite and a small amount of sphalerite. The main mineral of yellow tailings were muscovite, quarts, plumbojarosite, and a small amount of chalcopyrite and sphalerite. Pb and Zn were found in the leachate in high concentration and become the major contaminants. These come from the dissolution of plumbojarosite and sphalerite contained in the mine tailings.
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장군광산 갱내수와 침출수의 지화학적 및 침전물의 특성 연구
김준영 ( Jun Yeong Kim ),장윤득 ( Yun Deug Jang ),김영훈 ( Yeong Hun Kim ),김정진 ( Jeong Jin Kim ) 한국광물학회 2014 광물과 암석 (J.Miner.Soc.Korea) Vol.27 No.3
The Janggun mine (Longitude E129° 03`` 40, Latitude N36° 51`` 19) was once operated as an underground mine and recently significant amount of mine and leachate water has been discharged from the mine adits and tailing dumps. Mine and leachate waters are characterized by neutral to weakly basic pH values (6.81-9.59). Major cations and anions have concentrations between 6.70-129.80 mg/L of Mg, 289.29-661.02 mg/L of Ca, 4.74-14.38 mg/L of Mn and 1205.00-2448.69 mg/L of SO4 2-. Brownish yellow precipitates that found in the stream bottom consist of poorly crystallized 2-line ferrihydrite (Fe2O3·0.5 H2O). Scanning electron microscope (SEM) photographs show that brownish yellow precipitates consisted of micro-sized granular particles of about 0.1um in diameter. Semi-quantitative energy dispersive spectrometry (EDS) analyses show that these samples contained mainly Fe with minor Mn, Ca, Si and As.
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화강암에 대한 강화제 1T1G_5 wt 0.08 %의 야외 처리 후 효율 평가
도진영 ( Jin Young Do ),장윤득 ( Yun Deug Jang ),김정진 ( Jeong Jin Kim ) 한국광물학회 2014 광물과 암석 (J.Miner.Soc.Korea) Vol.27 No.3
Consolidants were extended use for conservation of weathered stone heritage. Epoxy, acryl, isocyanate, and alkoxysilane consolidants are most commonly used products. Consolidant of 1T1G_5 wt 0.08 % that consists of T (TEOS: Tetraethyl Orthosilicate) and G (GPTMS: 3-Glycidoxy propyl trimethoxy silane) were used this study. A shore hardness values show increasing after treated with consolidant in granite. Surface brightness after treated with consolidant are changing slightly dark but turns the original color over time. Ultra-sonic velocity is increased after treated with consolidant but slightly reduced over time to remain constant. It has the advantage of being effective after treated with consolidant in granite and efficiency of consolidation increase with slow velocity before treated with consolidant.
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