The role of hydrous ferric oxide precipitation in the fractionation of arsenic, gallium, and indium during the neutralization of acidic hot spring water by river water in the Tama River watershed, Japan

Ogawa, Yasumasa; Ishiyama, Daizo; Shikazono, Naotatsu; Iwane, Kenta; Kajiwara, Masahiro; Tsuchiya, Noriyoshi

doi:10.1016/j.gca.2012.03.009

Cited by 28 publications

(19 citation statements)

References 26 publications

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“…Filtrated samples contain colloidal and dissolved fractions. Generally, the colloidal fraction is small compared with the dissolved fraction (Ogawa et al, 2012(Ogawa et al, , 2013. Therefore, concentrations of heavy metals and arsenic measured from filtrated samples are expressed as dissolved fractions.…”

Section: Concentrations Of Heavy Metals and Arsenic In River Watermentioning

confidence: 99%

Estimation and comparison of the environmental impacts of acid mine drainage‐bearing river water in the Bor and Majdanpek porphyry copper mining areas in Eastern Serbia

et al. 2021

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Mining activities in the Bor and Majdanpek mining areas in Eastern Serbia started in 1903 and 1961, respectively. Environmental problems in the Bor mining area began after the opening of the Bor mine. Long‐term pollution of river water in the Bor and Majdanpek mining areas has an environmental impact on East Europe because all of the river water from these mining areas flows into the Danube River. However, the sizes of areas with pollution and the differences between the environmental impacts of the Bor and Majdanpek mining areas are not clear. In order to determine the effects of mining activities on river water in the study area, creation of geochemical maps showing the distributions of sulfate, heavy metals, and arsenic; estimation of threshold values to discriminate anomalous values from background values; and comparison of the environmental impacts of the two mining areas were carried out. High concentrations of SO42−, Fe, As, Cu, and Mn were found in the Bor River, Krivelj River, and Bela River located in the Bor mining area. These rivers are characterized by acidic pH ranging from 2.9 to 6.2. High concentrations of these components were also measured in the Small Pek River and the upper reach of the Pek River. These rivers are located in the Majdanpek mining area and are characterized by weakly alkaline pH (7.3–8.4). The acidic river water in the Bor mining area transports large quantities of heavy metals and arsenic downstream (6,900 t/year of Fe, 42 t/year of As, 910 t/year of Cu, and 187 t/year of Mn). On the other hand, the weakly alkaline river water in the Majdanpek mining area transports smaller quantities of heavy metals and arsenic downstream (160 t/year of Fe, 0.1 t/year of As, 6 t/year of Cu, and 272 t/year of Mn). The environmental impact of the Bor mining area is significantly larger than that of the Majdanpek mining area. In addition, on the basis of the distribution of anomalous values in river water, pollution caused by mining activities reaches the Danube River, which is located more than 100 km from the Bor and Majdanpek mining areas. Concentrations of SO42−, Fe, As, Cu, and Mn in the Bela River in the Bor mining area have been greatly decreased after mixing of acidic polluted water of the Bela River with water of the Timok River containing a high bicarbonate concentration. This fact suggests that river water in the Bor and Majdanpek mining areas has sufficient capacity for neutralization. Considering appropriate countermeasures of environmental reclamation, such as artificial neutralization at some important sources of waste water before discharging the waste water from the mining sites, there is a possibility for environmental reclamation in both mining areas because unpolluted river water in the study area has sufficient capacity for neutralization in a natural system.

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Section: Concentrations Of Heavy Metals and Arsenic In River Watermentioning

confidence: 99%

Estimation and comparison of the environmental impacts of acid mine drainage‐bearing river water in the Bor and Majdanpek porphyry copper mining areas in Eastern Serbia

et al. 2021

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“…8). Ogawa et al (2012) clarified that Fe was released from Obuki Hot Spring and tended to precipitate at Tamagawa Dam Lake as suspended and colloidal hydrous ferric oxide. Obuki Hot Spring is well known as a place where hokutolite, lead-bearing barite [(Ba,Pb)SO 4 ], is precipitated from the hot spring water (Takano, 1969;Okubo & Sakanoue, 1975;Saito & Nagai, 2007).…”

Section: Variations In Components Of Bulk Samplesmentioning

confidence: 99%

“…This indicates that the accumulation of Pb was closely related to the sedimentation mechanism of In. Since Ogawa et al (2012) pointed out that In was derived from Obuki Hot Spring, it is certain that Pb in the sediment at Tamagawa Dam Lake is also released from Obuki Hot Spring. Therefore, it would be interesting to compare the vertical variation of Pb content in the sediment with the temporal change in the activity of Obuki Hot Spring.…”

Section: Temporal Change In Pb Contents Of the Sediment In Tamagawa Dmentioning

confidence: 99%

“…The Tamagawa Hot Spring area is located in the northern upstream area of the lake. Some studies on the water chemistry of Obuki Hot Spring in the Tamagawa Hot Spring area have shown that the thermal water of the Obuki Hot Spring contains indium (In, 0.57 ppb), barium (Ba, 0.82 ppm), strontium (Sr, 0.42 ppm), lead (Pb, 1.59 ppm), and other metals (Takano, ; Sato et al, , ; Ogawa et al, ). Generally, trace elements in lake water can be scavenged from the water column to the surface of bottom sediments by various geochemical processes (Murray, ; Davis, ; Ali & Dzombak, ; Tessier et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Vertical Variation of Lead Content in Sediment Collected from Man‐made Tamagawa Dam Lake in Akita Prefecture, Japan

et al. 2018

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Alternation layered lake sediment that had accumulated over a period of 22 years, from 1990 to 2012, was collected from the Tamagawa Dam Lake, which is located in the northeastern part of Akita Prefecture. The lake water is acidified (pH = 4.1) by the inflow of high‐acidic thermal water (pH = 1.2) from the Obuki Hot Spring, the main hot spring in the Tamagawa Hot Spring area. The vertical variations in Si, Al, Fe, Ti, and Pb contents of the sediment were determined by XRF, EPMA, and LA‐ICP‐MS in order to clarify the sedimentation processes of the lake sediment. The layers consisting of the sediment could be mostly classified into three types: dark brown, yellowish brown, and reddish layers. The contents of Si, Al, Fe, and Ti corresponded to the variation in color of each layer in the sample. Based on the Si, Al, and Fe contents in the sediment of Tamagawa Dam Lake, the sources of these elements were classified as detrital origin in dark brown and yellowish brown layers (Si, Al, and Ti) and chemical precipitate origin in reddish layers (Fe). Detrital components were derived from volcanic rocks in the watershed of Tamagawa Dam Lake. The variation of Pb content did not accord with the color of layers. The content of Pb in the sediment of Tamagawa Dam Lake ranges from 45 to 522 ppm. The vertical variation of Pb content in sediment corresponded to the temporal variation of Pb content in thermal water from the Obuki Hot Spring from 1990 to 2012. A large influence of hydrothermal activity of the Tamagawa Hot Spring on the vertical distribution of Pb was found during the active period of the Obuki Hot Spring, resulting in high Pb content within layers at 5–8 cm from the bottom of the sample. T‐Fe2O3‐rich reddish layers were also found in this range. Therefore, it is assumed that T‐Fe2O3 and Pb originated from Obuki Hot Spring and precipitated in Tamagawa Dam Lake. However, no correlation was found between T‐Fe2O3 and Pb contents for any of the dark brown, yellowish brown, and reddish layers. Some layers with high Pb content were also found to have high SiO2 and Al2O3 contents. These findings indicate that there are several possibilities for the sedimentation process of Pb. The sedimentation of Pb as well as that of T‐Fe2O3 in Tamagawa Dam Lake provides a good example of the accumulation of elements by chemical precipitation away from the source of elements.

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“…REEs are used as pigments, optical materials, magnetic materials and thermoelectric materials [1][2][3][4][5][6]. Tamagawa hot spring (Akita, Japan) is acidic in nature (pH 1.2) that contains very low concentration of REEs (1 to 70 μ g/L) [7][8][9]. However, output water from Tamagawa hot spring is very high (ca.…”

Section: Introductionmentioning

confidence: 99%

A Study of Enrichment Process of Rare Earth Elements from Tamagawa Hot Spring Water

Haga

Bessho

Gandhi

et al. 2014

Int.J.Soc.Mater.Eng.Resour.

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The role of hydrous ferric oxide precipitation in the fractionation of arsenic, gallium, and indium during the neutralization of acidic hot spring water by river water in the Tama River watershed, Japan

Cited by 28 publications

References 26 publications

Estimation and comparison of the environmental impacts of acid mine drainage‐bearing river water in the Bor and Majdanpek porphyry copper mining areas in Eastern Serbia

Estimation and comparison of the environmental impacts of acid mine drainage‐bearing river water in the Bor and Majdanpek porphyry copper mining areas in Eastern Serbia

Vertical Variation of Lead Content in Sediment Collected from Man‐made Tamagawa Dam Lake in Akita Prefecture, Japan

A Study of Enrichment Process of Rare Earth Elements from Tamagawa Hot Spring Water

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