화순 폐탄광지역 광산배수와 침전 및 증발잔류광물에 대한 지구화학적 및 광물학적 연구

박천영,정연중,강지성 대한자원환경지질학회 2000 자원환경지질 Vol.33 No.5

This study investigated the geochemical characteristics of mine drainage discharged from an abandoned coal mine in the Hwasoon area. Surface water samples were collected from 23 locations along the Hancheon creek. The concentration of Zn and Cu in stream waters was highest at low pH (3.53), whereas the content of TDS and TDI was highest at high pH (7.78) due to the concentration of Ca, $HCO_3$ and $SO_4$. At the upstream site, the Ba, Fe, Mn, Zn, and $SO_4$ contents were relatively high but decreased significantly with the distance from the coal mine. On the contrary, the Na and $NO_3$ contents were low at the upstream site but increased downstream. Yellow precipitate material collected in the Hancheon consisted mainly of iron and LOI. This yellow precipitate was heated from 100 to $900^{\circ}C$ for 1 hour. With increasing temperature, the intensity of hematite peaks were sharply produced in X-ray pattern and the absorption band Fe-O of hematite increased in IR due to dehydration and melting. The yellow to brown precipitate and evaporite materials were collected by a air-dry from the acid mine water at the laboratory. After drying, the concentration of ions in the acid water samples increased progressively in oversaturation with respect to either gypsum, ferrohexahydrite or quenstedetite. The X-ray powder diffraction studies identified that the precipitated and evaporated materials after drying were well crystallized gypsum, ferrohexahydrite and quenstedetite. Diagnostic peaks used for identification of gypsum were the 7.65, 4.28, 3.03, 2.87 and 2.48$\AA$ peaks and those for ferrohexahydrite were the 5.46, 5.12, 4.89, 4.44, 4.05, 3.62, 3.46, 3.40, 3.20, 3.03, 2.94, 2.53, 2.28, 2.07, 1.88 and 1.86${\AA} peaks. The IR spectra with OH-stretching, deformation of $H_2O$and ${SO_4}^{2-}$stretching vibration include the existence of gypsum, ferrohexahydrite and quenstedetite in the precipitated and evaporite materials. In the SEM and EDS analysis for the evaporite material, gypsum with well-crystallized, acicular, and columnar form was distinctly observed.

강원도 함백폐탄광지역에서 생성되는 광산배수의 수질 특성

박천영,정연중,김성구,조갑진 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.2

This study investigated geochemical characteristics of the mine drainage discharged from the abandoned coal mine in the Hamback area. Sampling of stream waters(21) were carried out in the Hamback area. The pH, EC, TDS, Eh and Do contents were measured in field and ions such as Na, K, Mg, Ca, Mn. Fe, S r , Al. Cr, Cu. Zn, Ge, As, Mo, Cd, Sb, Ba, Pb, F, Cl. No₃ and SO₄ were analyzed by GFAAS, AAS, ICP-AES, ICP-MS and IC. In stream waters, pH values increased, whereas total dissolved solids(TDS), electrical conductivity(EC) and dissolved oxygen(D0) values decreased with distance. Eh negative values a t upstream site were found, suggesting that its caused by the organic material in the retention pond, and these value in stream water effluent from the retention pond increased progressively with distance. The concentration of toxic heavy metals and major cations except Na, Cl, No₃, Cu, Mo and Sb decreased rapidly due to retention pond, but the concentration of Na, Cl, No₃, Cu, Mo and Sb increased gradually with distance. The concentration of Na, Cl and No₃ increasing with distance, which indicate by domestic waste. Major ions, such as Na, K, Ca, Mg, F, Cl, SO₄ and HCO₃ were statically analyzed in order to investigate relationship with TDS contents. M is observed that TDS contents have-positive relation with K, Ca, Mg, F, so4 and HC0₃ contents, but negative relationships with Na, Cl and No₃ contents. Most stream surface waters showed a calcium-sulfate and noncarbonate hardness dominating water quality type. In geochemical modeling for stream surface waters, the saturation index of gibbsite were oversaturated with respect to gibbsite.

광주시 운정동 위생 쓰레기 매립장 침출수에 대한 지구화학적 연구

박천영,김성구 한국자원공학회 2002 한국자원공학회지 Vol.39 No.2

광양 광화대지역에 분포하는 음용지하수에 대한 지구화학적 연구

박천영,고진석,정연중,김성구 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.2

The objective of this study is to investigate the geochemical characteristics of groundwater at Kwangyang area. Twenty two groundwater samples were collected and analyzed in vicinity of gold deposits area. The pH, Eh, EC, TDS and DO contents were measured in the field and, cation elements such as K, Na, Mg, Si, Ca, Fe, Al, Cr, Mn, Cu, Zn, As, Cd, Se. Hg, Ge and Pb were analyzed by GFAAS, AAS. ICP-MS. Anions, Cl, NO₂, NO₃and SO₄ were analyzed by IC and the HCO₃ contents were determined by titration with Phenolphthalein and. Methyl red-brom cresol green TDS vs TDI, Ca, K, Na, Mg, Zn and As contents were clearly related each other. Most groundwater showed a calcium-sulfate dominating water quality type in the Piper s diagram. On stability diagrams, the groundwaters were included in the kaolinite stable area. The increase in the Na contents correlates positively with the Cl content in the groundwater. The contents of NO₃is particularly enriched in groundwater that suggest the impact of domestic waste water results in an increase of Cl contents in the shallow groundwater.

전통 목조 건축물의 함수율 정밀 모니터일 조사 연구

박천영,김광철 한국목재공학회 2013 한국목재공학회 학술발표논문집 Vol.2013 No.-

$42^{\circ}C$에서 토착호산성박테리아의 황철석 표면에 대한 선택적 부착과 용출 특성

박천영,김순오,김봉주,Park, Cheon-Young,Kim, Soon-Oh,Kim, Bong-Ju 대한자원환경지질학회 2010 자원환경지질 Vol.43 No.2

The bioleaching experiment under $42^{\circ}C$ was effectively carried out to leach the more valuable element ions from the pyrite in the Gangyang mine waste. Bacteria can survive at this temperature, as indigenous acidophilic bacteria were collected in the Hatchobaru acidic hot spring, in Japan. To enhance the bacterial activity, yeast extract was added to the pyrite-leaching medium. The indigenous acidophilic bacteria appeared to be rod-shaped in the growth-medium which contained elemental sulfur and yeast extract. The rod-shaped bacteria ($0.7\times2.6\;{\mu}m$, $0.6\times7\;{\mu}m$, $0.8\times5\;{\mu}m$ and $0.7\times8.4\;{\mu}m$) were attached to the pyrite surface. The colonies of the rod-shaped bacteria were selectively attached to the surroundings of a hexagonal cavity and the inner wall of the hexagonal cavity, which developed on a pyrite surface. Filament-shaped bacteria ranging from $4.92\;{\mu}m$ to $10.0\;{\mu}m$ in length were subsequently attached to the surrounding cracks and inner wall of the cracks on the pyrite surface. In the XRD analysis, the intensity of (111), (311), (222) and (320) plane on the bacteria pyrite sample relatively decreased in plane on the control pyrite sample, whereas the intensity of (200), (210) and (211) increased in these samples. The microbiological leaching content of Fe ions was found to be 3.4 times higher than that of the chemical leaching content. As for the Zn, microbiological leaching content, it was 2 times higher than the chemical leaching content. The results of XRD analysis for the bioleaching of pyrite indicated that the indigenous acidophilic bacteria are selectively attacked on the pyrite specific plane. It is expected that the more valuable element ions can be leached out from the mine waste, if the temperature is increased in future bioleaching experiments.

고온성 박테리아를 이용한 섬아연석의 용출 특성

박천영,정경훈,김봉주,Park, Cbeon-Young,Cheong, Kyung-Hoon,Kim, Bong-Ju 대한자원환경지질학회 2010 자원환경지질 Vol.43 No.6

고온성박테리아를 이용하여 섬아연석으로부터 유용금속이온을 효과적으로 용출시키기 위하여 $42^{\circ}C$, $52^{\circ}C$, $62^{\circ}C$에서 미생물용출실험을 각각 수행하였다. 이때 미생물용출실험이 진행되는 10일 동안, 용출액의 pH는 2.40에서 2.5 범위를 유지하였으며 미생물 용출실험이 종료될 때까지 막대 모양의 박테리아들이 섬아연석 표면에 부착되어 있는 것이 계속해서 관찰되었다. 용출온도를 $42^{\circ}C$, $52^{\circ}C$, $62^{\circ}C$로 증가시키면, 비교시료에서 용출 함량이 증가되는 금속은 Zn과 Pb이고, 박테리아 용출 시료에서는 Fe 용출 양이 증가하였다. 용출 온도를 $42^{\circ}C$, $52^{\circ}C$, $62^{\circ}C$로 증가시켰을 때, Zn 이온은 비교시료에서 보다 박테리아 용출 시료에서 각각 9.5배, 2.8배, 2.9배 이상으로 높게 용출되었고, Pb 이온은 비교시료에서 보다 박테리아 용출 시료에서 각각 14.8배, 7.4 배, 3.8배 이상으로 높게 용출되었다. Fe 이온의 비교시료에서 용출 온도를 $42^{\circ}C$, $52^{\circ}C$, $62^{\circ}C$로 증가시켜도 전혀 용출되지 않았지만, 박테리아 Fe 함량이 온도에 비례하여 증가하였다.

미생물 기원의 나선형 및 협막구조물에 형성된 침철석과 레피도크로사이트의 결정화작용

박천영,조상섭,Park, Cheon-Young,Cho, Sang-Seob 대한자원환경지질학회 2009 자원환경지질 Vol.42 No.6

The objectives of this study are to investigate the biomineralization of goethite and lepidocrocite formed on the twisted-stalk and the sheathed-filament structure that is suggest microbe origin, and heavy metal in the yellow Fe-hydroxide. On the ratio of Cl and the Cl/Br ratios that are a pollution and non-pollution of groundwaters, it is indicated that the groundwater in this areas were relatively contaminated by human activity. The composition of the yellow Fe-hydroxide consisted mainly of $Fe_2O_3$ and $SiO_2$. The content of $Fe_2O_3$ ranges from 58.57 wt.% to 75.7 3wt.%, and $SiO_2$ content ranges from 5.8 wt.% to 16.17 wt.%. Heavy metal elements such as Zn(max. 6,160 mg/kg), Pb(max. 377 mg/kg), U(max. 503 mg/kg), Cr(max. 203 mg/kg), Cu(max. 77 mg/kg), V(max. 162 mg/kg), Ni(max. 105 mg/kg) were observed to be rich in those yellow Fe-hydroxide. The lath and platy crystals and needle-shaped crystals were clearly observed on the twisted-stalks and sheathed-filaments structure. The goethite, gypsum, and lepidocrocite were identified in the yellow Fe-hydroxide by x-ray powder diffraction.

전시발표 : C분야: 목질재료 ; P-44 : 인공촉진열화에 따른 목재의 역학적 특성 분석

박천영,김광철 한국목재공학회 2014 한국목재공학회 학술발표논문집 Vol.2014 No.-

증발작용에 따른 광산배수의 수질변화와 증발잔류광물에 대한 지구화학

박천영,박신숙,김성구,,조갑진,임성수 한국자원공학회 2003 한국자원공학회지 Vol.40 No.5