Characterisation of hydrous ferric oxides derived from iron-rich groundwaters and their contribution to the suspended sediment of streams

Baken, Stijn; Sjöstedt, Carin; Gustafsson, Jon Petter; Seuntjens, Piet; Desmet, Nele; Schutter, J. De; Smolders, Erik

doi:10.1016/j.apgeochem.2013.09.013

Cited by 29 publications

(33 citation statements)

References 39 publications

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“…Sediments of the studied rivers contain high and spatially varying C concentrations (9.4%-16%; Baken et al, 2013), which implies possible diagenetic mobilization reactions within the sediments that may involve REE (e.g., Elderfield and Sholkovitz, 1987). The slightly lower positive Ce anomaly of the red sediment than that of the red suspended matter (Table 3; Fig.…”

Section: Formation Of Red Suspended Matter and Red Sedimentmentioning

confidence: 95%

“…This scenario is kinetically reasonable at the pH-Eh-Tconditions of the studied water system (Fernandez-Bastero et al, 2008). Given the fact that the river waters (slightly acidic to alkaline; Table 1) have generally inherited their chemical composition from the groundwaters (pH = 6.3-6.9; Baken et al, 2013), we assume that the slightly acidic pH has triggered the dissolution of glauconite (the main aquifer-forming mineral, quartz, remains almost intact under these conditions) which leads to the release of Fe into solution. Theoretically, only~13% of the total Fe in glauconite is Fe 2+ .…”

Section: Glauconite Dissolution As a Source Of Fe And Ree To The Rivementioning

confidence: 99%

“…Theoretically, only~13% of the total Fe in glauconite is Fe 2+ . However, in the local groundwaters~100% of the total Fe is Fe 2+ ([Fe 2+ ] = 3.81-58.0 mg/L; Baken et al, 2013). Given that the local groundwaters are suboxic to anoxic ([O 2 ] b 1 mg/L; Baken et al, 2013) we suppose that released Fe 3+ (major part of the total Fe in glauconite) is reduced to Fe 2+ and becomes mobile until encountering oxic conditions.…”

Section: Glauconite Dissolution As a Source Of Fe And Ree To The Rivementioning

confidence: 99%

“…The average annual suspended flux in the Nete Basin (at the Grobbendonk measurement station of Flanders Hydraulics Research) has been estimated to be 11,800 t/yr -2004Vanlierde et al, 2007). The groundwater is rich in dissolved Fe ([Fe 2+ ] = 3.81-58.0 mg/L; Baken et al, 2013), which starts precipitating upon entering the river flow (Fig. 3A) and then flocculating and settling on the river bed (Fig.…”

Section: Hydrogeological Settingmentioning

confidence: 99%

“…The thick and highly permeable aquifer 3 is the main supplier of groundwater into both river basins. The groundwater in the Neogene aquifers is slightly acid (pH = 6.3-6.9) and suboxic to anoxic ([O 2 ] b 1 mg/L) whereas the river water is slightly alkaline (pH N 7) and oxic ([O 2 ] = 1.22-8.74 mg/L) (Vanlierde et al, 2007;Baken et al, 2013). The average annual suspended flux in the Nete Basin (at the Grobbendonk measurement station of Flanders Hydraulics Research) has been estimated to be 11,800 t/yr -2004Vanlierde et al, 2007).…”

Section: Hydrogeological Settingmentioning

confidence: 99%

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Ferrihydrite precipitation in groundwater-fed river systems (Nete and Demer river basins, Belgium): Insights from a combined Fe-Zn-Sr-Nd-Pb-isotope study

Dekov¹,

Vanlierde²,

Billström³

et al. 2014

Chemical Geology

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Two groundwater-fed river systems (Nete and Demer, Belgium) carry red suspended material that settles on the river bed forming red sediments. The local aquifer that feeds these river systems is a glauconite-rich sand, which provides most of the dissolved Fe to the rivers. The solid component of these systems, i.e., the red suspended material and sediments, has a simple mineralogy (predominantly ferrihydrite), but shows a complex geochemistry pointing out the different processes contributing to the river chemistry: (1) the red sediments have higher transition metal (excluding Cu) and detrital element (e.g., Si, Al, K, Rb, etc.) concentrations than the red suspended matter because of their longer residence time in the river and higher contribution of the background (aquifer) component, respectively; (2) the red suspended material and sediments have inherited their rare earth element (REE) patterns from the aquifer; (3) the origin of Sr present in the red suspended matter and red sediments is predominantly marine (i.e., Quaternary calcareous rocks), but a small amount is geogenic (i.e., from detrital rocks); (4) Pb in both solids originates mostly from anthropogenic and geogenic sources; (5) all of the anthropogenic Pb in the red suspended material and sediments is hosted by the ferrihydrite; (6) Nd budget of the red riverine samples is controlled by the geogenic source and shows little anthropogenic component; (7) the significant Fe-and Zn-isotope fractionations are in line with the previous studies. Their fractionation patterns do not correlate, suggesting that the processes controlling the isotope geochemistry of Fe and Zn are different: oxidation/reduction most likely governs the Fe-isotope fractionation, whereas adsorption/desorption or admixing of anthropogenic sources controls the isotope fractionation of Zn.

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Section: Formation Of Red Suspended Matter and Red Sedimentmentioning

confidence: 95%

Section: Glauconite Dissolution As a Source Of Fe And Ree To The Rivementioning

confidence: 99%

Section: Glauconite Dissolution As a Source Of Fe And Ree To The Rivementioning

confidence: 99%

Section: Hydrogeological Settingmentioning

confidence: 99%

Section: Hydrogeological Settingmentioning

confidence: 99%

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Ferrihydrite precipitation in groundwater-fed river systems (Nete and Demer river basins, Belgium): Insights from a combined Fe-Zn-Sr-Nd-Pb-isotope study

Dekov¹,

Vanlierde²,

Billström³

et al. 2014

Chemical Geology

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Natural and anthropic processes controlling groundwater hydrogeochemistry in a tourist destination in northeastern Brazil

Mattos

Cruz

Paula

et al. 2018

Environ Monit Assess

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The objective of this study was to analyze spatial-seasonal changes to identify the natural and anthropic processes that control groundwater hydrogeochemistry in urban aquifers in municipality of Lençóis (Bahia). Tourism is the main activity of this municipality, which is an important tourist destination in northeastern Brazil and which maintains its tourism infrastructure by using groundwater. Two field campaigns were conducted (dry and rainy seasons) in order to collect groundwater samples extracted from 15 tubular wells distributed over the urban area of the municipality. The Piper diagram, multivariate statistical analyses, and artificial neural networks indicated that there are two types of water (Na-Cl and Na-[Formula: see text]), which were divided into five different clusters. Seasonal variation was observed to significantly alter groundwater hydrogeochemistry. According to the Gibbs diagram, groundwater within the urban area of Lençóis belonged to the rainfall dominance, demonstrating low water-rock interaction. Hydrogeochemical modeling results suggested hydrolysis as the main natural factors controlling process. However, mineral dissolution also occurred in one of the clusters. Human-originated trace contamination by nitrate, chloride, and sulfate occurred in a zone of the urban area. This contamination was observed regardless of climate seasonality, indicating that the main controlling process for groundwater hydrochemistry in this region is wastewater mobilization (indirect artificial recharge).

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The lake as an iron sink - new insights on the role of iron speciation

et al. 2021

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Characterisation of hydrous ferric oxides derived from iron-rich groundwaters and their contribution to the suspended sediment of streams

Cited by 29 publications

References 39 publications

Ferrihydrite precipitation in groundwater-fed river systems (Nete and Demer river basins, Belgium): Insights from a combined Fe-Zn-Sr-Nd-Pb-isotope study

Ferrihydrite precipitation in groundwater-fed river systems (Nete and Demer river basins, Belgium): Insights from a combined Fe-Zn-Sr-Nd-Pb-isotope study

Natural and anthropic processes controlling groundwater hydrogeochemistry in a tourist destination in northeastern Brazil

The lake as an iron sink - new insights on the role of iron speciation

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