Scott A. Wood's research while affiliated with North Dakota State University and other places
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Publications (4)
Acidic thermal water originating from the Kusatsu geothermal area of Gunma Prefecture, Japan is introduced into rivers, where there are many anthropogenicobjects such as a neutralization plant, a dam and water channels for hydroelectric power plants. We have investigated changes in the physico-chemical nature and fractionation mechanisms of rare ea...
In the Tamagawa geothermal area of Akita Prefecture, northern Japan, Obuki spring discharges a large amount of thermal water (∼9000 L/min), which is chloride-rich and acidic (pH 1.2). We have investigated changes in the physico-chemical nature and fractionation mechanisms of rare earth elements (REEs) including Y and actinides (Th and U) in the Shi...
This work assessed both the fractionation and the seasonal mobility variations of Ga and In in systems impacted by acidic thermal waters. This was accomplished by performing thermodynamic calculations using the PHREEQC algorithm and by assessing the activity of acidophilic iron-oxidizing bacteria. The pH of the Kusatsu thermal waters in Gunma Prefe...
Citations
... While the mobility of U in the ecosystem depends on redox conditions (IRNS, 2012) and complexation by organic matter (Bone et al., 2020), with the most stable and mobile form being U(VI), the mobility of Th in soil is very limited due to strong sorption to soil particles (Torstenfelt, 1986). In contrast, the content of REEs in soil is related to redox potential and pH as well as to the presence of clay, carbonate, organic matter, and Al, Fe, and Mn oxides and oxyhydroxides (Aide and Aide, 2012;Felipe-Sotelo et al., 2017;Mihajlovic and Rinklebe, 2018;Aide, 2019;Tang et al., 2020;Ogawa et al., 2021). Their content generally decreases with the decrease of pH, redox potentials, and Al-Mn-Fe contents (Aide and Aide, 2012;Mihajlovic and Rinklebe, 2018;Aide, 2019). ...
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... Several comprehensive reviews of surficial weathering of iron sulfide ore-derived mine tailings in a semi-arid environment have been published over the past decades (Blowes and Jambor, 1990;Jambor, 1994;Jambor and Blowes, 1998;Lindsay et al., 2015). Previous studies have also investigated the geochemical mobility of metals, aqueous rare earth elements, and actinides (i.e., U and Th) in the natural aquatic system (Ogawa et al., 2021;Ogawa et al., 2019). The REEs patterns in groundwater result from complex solid-water interactions and can be applied as process indicators of a post-mining area (Grawunder et al., 2018). ...
... Sorption onto hydrous Al or Fe oxy-hydroxides (HAO or HFO) is an important process for natural attenuation of many elements in acidified aquatic systems (e.g., Gammons et al., 2005aGammons et al., , 2005bGammons et al., , 2005cWood et al., 2006;Schemel et al., 2007;McCleskey et al., 2009;Ogawa et al., 2014;Carrero et al., 2015;Ayora et al., 2016). Sorption onto HAO and HFO is largely dependent on pH and thus aqueous speciation of target metals and their fractionation (Ogawa et al., 2018(Ogawa et al., , 2019. It is also reported that REE fractionation are also caused by differences in the stability of aqueous REE complex with various anions (e.g., Grawunder et al., 2014;Olías et al., 2018;Lozano et al., 2019Lozano et al., , 2020aMunemoto et al., 2020). ...
