Acid Mine Drainage Sources and Impact on Groundwater at the Osarizawa Mine, Japan
Understanding the origin of acid mine drainage (AMD) in a closed mine and groundwater flow system around the mine aids in developing strategies for environmental protection and management. AMD has been continuously collected and neutralized at Osarizawa Mine, Akita Prefecture, Japan, since the mine...
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| Veröffentlicht in: | Minerals (Basel) 2021-09, Vol.11 (9), p.998 |
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| creator | Nishimoto, Naoto Yamamoto, Yosuke Yamagata, Saburo Igarashi, Toshifumi Tomiyama, Shingo |
| description | Understanding the origin of acid mine drainage (AMD) in a closed mine and groundwater flow system around the mine aids in developing strategies for environmental protection and management. AMD has been continuously collected and neutralized at Osarizawa Mine, Akita Prefecture, Japan, since the mine was closed in the 1970s, to protect surrounding river water and groundwater quality. Thus, water samples were taken at the mine and surrounding groundwaters and rivers to characterize the chemical properties and environmental isotopes (δ2H and δ18O). The results showed that the quality and stable isotope ratios of AMD differed from those of groundwater/river water, indicating that the recharge areas of AMD. The recharge area of AMD was evaluated as the mountain slope at an elevation of 400–500 m while that of the surrounding groundwater was evaluated at an elevation of 350–450 m, by considering the stable isotopes ratios. This indicates that the groundwater affected by AMD is limited to the vicinity of the mine and distributed around nearby rivers. |
| doi_str_mv | 10.3390/min11090998 |
| format | Article |
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AMD has been continuously collected and neutralized at Osarizawa Mine, Akita Prefecture, Japan, since the mine was closed in the 1970s, to protect surrounding river water and groundwater quality. Thus, water samples were taken at the mine and surrounding groundwaters and rivers to characterize the chemical properties and environmental isotopes (δ2H and δ18O). The results showed that the quality and stable isotope ratios of AMD differed from those of groundwater/river water, indicating that the recharge areas of AMD. The recharge area of AMD was evaluated as the mountain slope at an elevation of 400–500 m while that of the surrounding groundwater was evaluated at an elevation of 350–450 m, by considering the stable isotopes ratios. This indicates that the groundwater affected by AMD is limited to the vicinity of the mine and distributed around nearby rivers.</description><identifier>ISSN: 2075-163X</identifier><identifier>EISSN: 2075-163X</identifier><identifier>DOI: 10.3390/min11090998</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>abandoned and closed mine ; Abandoned mines ; Acid mine drainage ; acid mine drainage (AMD) ; Chemical properties ; Chemicophysical properties ; Coal mining ; Elevation ; Environmental management ; Environmental protection ; Flow system ; Groundwater ; Groundwater flow ; Groundwater mining ; Groundwater quality ; Heavy metals ; Isotope ratios ; Isotopes ; Mine drainage ; Minerals ; Mountains ; Ratios ; Recharge ; Recharge areas ; River water ; Rivers ; stable isotope ratio ; Stable isotopes ; Water analysis ; Water pollution ; Water quality ; Water sampling</subject><ispartof>Minerals (Basel), 2021-09, Vol.11 (9), p.998</ispartof><rights>2021 by the authors. 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AMD has been continuously collected and neutralized at Osarizawa Mine, Akita Prefecture, Japan, since the mine was closed in the 1970s, to protect surrounding river water and groundwater quality. Thus, water samples were taken at the mine and surrounding groundwaters and rivers to characterize the chemical properties and environmental isotopes (δ2H and δ18O). The results showed that the quality and stable isotope ratios of AMD differed from those of groundwater/river water, indicating that the recharge areas of AMD. The recharge area of AMD was evaluated as the mountain slope at an elevation of 400–500 m while that of the surrounding groundwater was evaluated at an elevation of 350–450 m, by considering the stable isotopes ratios. 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water</subject><subject>Rivers</subject><subject>stable isotope ratio</subject><subject>Stable isotopes</subject><subject>Water analysis</subject><subject>Water pollution</subject><subject>Water quality</subject><subject>Water 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AMD has been continuously collected and neutralized at Osarizawa Mine, Akita Prefecture, Japan, since the mine was closed in the 1970s, to protect surrounding river water and groundwater quality. Thus, water samples were taken at the mine and surrounding groundwaters and rivers to characterize the chemical properties and environmental isotopes (δ2H and δ18O). The results showed that the quality and stable isotope ratios of AMD differed from those of groundwater/river water, indicating that the recharge areas of AMD. The recharge area of AMD was evaluated as the mountain slope at an elevation of 400–500 m while that of the surrounding groundwater was evaluated at an elevation of 350–450 m, by considering the stable isotopes ratios. This indicates that the groundwater affected by AMD is limited to the vicinity of the mine and distributed around nearby rivers.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/min11090998</doi><oa>free_for_read</oa></addata></record> |
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| subjects | abandoned and closed mine Abandoned mines Acid mine drainage acid mine drainage (AMD) Chemical properties Chemicophysical properties Coal mining Elevation Environmental management Environmental protection Flow system Groundwater Groundwater flow Groundwater mining Groundwater quality Heavy metals Isotope ratios Isotopes Mine drainage Minerals Mountains Ratios Recharge Recharge areas River water Rivers stable isotope ratio Stable isotopes Water analysis Water pollution Water quality Water sampling |
| title | Acid Mine Drainage Sources and Impact on Groundwater at the Osarizawa Mine, Japan |
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