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.

산성광산배수 및 증발잔류광물에 대한 지구화학적 연구

박천영,정연중,박신숙,김성구 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.1

This study investigated geochemical characteristics of acid mine drainage(AMD) discharged from the abandoned coal mine and gold mine. Water sample of acid mine drainage were collected from 9 locations at Hwasun, Kwangyang, Chonam, Taback and Sangdong area. The yellowish and brown color of evaporated material was prepared by air dry for 9 acid water samples during 20 days in the laboratory As the 9 acid water samples become fully drying, the concentration of this water become progressively more concentrated and its may be eventually reached saturation with respect to either gypsum or ferrohexahydrite. The value of density for acid mine drainage increase with increasing TDS and EC values. The value of activity for acid mine drainage increase with those real ion concentration. The x-ray powder diffraction studies identified that the evaporated materials were gypsum, ferrohexahydrite and kaolinite. Diagnostic peaks used for identification of gypsum were the 7.62, 4.28, 3.80, 3.07, 2.88, 2.68, 2.22, 1.90 and 1.62Å peaks. Diffraction peaks at 6.00, 5.48, 5.13, 4.89, 4.40, 3.46, 3.20, 3.03, 2.97, 2.94, 2.79, 2.27 2.09Å may indicate ferrohexahydrite. In the SEM and EDS analysis, the crystals of acicular and columnar in the evaporated materials probably shown the gypsum.

증발잔류 광물의 광물학적 연구

박천영,박신숙,김성구,조갑진,임성수 조선대학교 에너지.자원신기술연구소 2003 에너지·자원신기술연구소 논문지 Vol.25 No.1

This study has focused on mineralogical and geochemical characteritics of evaporated minerals from the mine waters and on variation of constituents in mine water during the evaporation The evaporated minerals are shown in mine waters at the field. In order to form of evaporates in the laboratory, mine waters were sampled from the abandoned mine area(HS, LG and BJ) and were air dried in laboratory for room temperature. During the evaporation of mine waters, TDS, EC values and the concentration of major and minor ions increased, whereas dissolved oxygen(DO) values decreased with the sampling time. Gypsum, epsomite, kaolinite, dolomite and illite were identified in BJ sample, gypsum and epsomite were observed in LG sample, and gypsum, epsomite and vermiculite were founded in HS sample by x-ray powder diffraction studies. The infrared spectra for evaporated minerals show major absorption banded due to OH stretching, adsorbed molecular water and sulfate stretching, respectively. Evaporated minerals were heated at 65, 150, 250 and 350℃ for 1 hour in electrical Furnaces. Gypsum transformed the bassanite at 150℃ heating temperature and epsomite transformed the hexa-hydrite at 65℃, and then converted the kieserite at 250℃. With increasing heating temperature, the intensity of absorption OH band(3407 11㎝^(-1)), adsorbed molecular water band (1654.39㎝^(-1)) and sulfate stretching band (1113.46㎝^(-1)) were decreased, whereas sulfate stretching bands(668.35㎝^(-1) and 603.85㎝^(-1)) were relatively increased in IR due to dehydration.

光陽地域에 分布하는 金銀鑛床에 對한 鑛石鑛物과 岩石化學

朴天永 조선대학교 동력자원연구소 1989 動力資源硏究所誌 Vol.11 No.2

The geology of the area study consists of Pre-Cambrian Jirisan gnesis complex as its base, which is uncomformably overlain by Cretaceous sedimentary rocks of the Gyongsan system. The sedimentaly rocks are intruded by intermediate volcanic rocks and granitoids of the Cretaceous period. These deposites are fissure filling hydrothermal ore deposits which are in the Pre-Cambrian Jirisan gnesis complex. Ore minerals are pyrite, molybdenite, arsenopyrite, sphalerite, chalcopyrite, galena, tetrahedrite, electrum, hessite, bismuth, bismuthinite, pyrargyrite, proustite, covellite, marcasite and goethite.

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

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.

장부 접합부를 가지는 기둥-보 목구조 골조의 구조 성능 평가

박천영,방성준,김형건,황권환,이전제 한국목재공학회 2011 한국목재공학회 학술발표논문집 Vol.2011 No.-

전통 목조 건축물의 함수율 정밀 모니터일 조사 연구

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

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.