Sorption of yttrium and rare earth elements by amorphous ferric hydroxide: Influence of pH and ionic strength

Quinn, Kelly; Byrne, Robert H.; Schijf, Johan

doi:10.1016/j.marchem.2005.05.011

Cited by 118 publications

(94 citation statements)

References 49 publications

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“…This observation is in agreement with experimental results that suggested oxidative Ce scavenging by hydrous Fe oxides from dilute HCl solutions (Bau, 1999). However, the majority of experimental studies (Byrne and Kim, 1990;De Carlo, 1992, 1993;De Carlo et al, 1998;Kawabe et al, 1999a, b;Kawabe, 2000, 2001;Verplanck et al, 2004;Davranche et al, 2004;Quinn et al, 2004Quinn et al, , 2006aQuinn et al, , 2006bQuinn et al, , 2007 did not find evidence of preferential Ce scavenging, although some of the data sets presented, such as those of Verplanck et al (2004) and Davranche et al (2004), for example, show very small positive Ce anomalies in patterns of Fe-(hydr)oxide/solution partition coefficients. Hence, the claim of preferential (oxidative) scavenging of Ce by hydrous Fe oxides is still considered controversial and is not widely accepted.…”

Section: Cerium Oxidation In the Marine Environmentsupporting

confidence: 87%

“…Sequential leaching of hydrogenetic Fe-Mn crusts, which reveals the respective REY signature of the Mn oxide and the Fe oxide, allows us to study the partitioning of REY between these co-existing Mn oxides and Fe oxides and seawater. Our results for co-existing metal (hydr)oxides in a natural system, therefore, complement the numerous experimental studies (Byrne and Kim, 1990;De Carlo, 1992, 1993;De Carlo et al, 1998;Bau, 1999;Kawabe et al, 1999a, b;Kawabe, 2000, 2001;Davranche et al, 2004Davranche et al, , 2005Davranche et al, , 2008Verplanck et al, 2004;Quinn et al, 2004Quinn et al, , 2006aQuinn et al, , 2006bQuinn et al, , 2007 that focused on REY partitioning between seawater or other solutions and either pure Mn oxides or pure (hydrous) Fe oxides. If the SES model is a reasonably good approximation, the REY should display an association with the in seawater slightly positively surface-charged Fe oxides and the negatively surface-charged Mn oxides that reflects their distribution between their dominant dissolved species in seawater, i.e., between REYCO 3 + and REY(CO 3 ) 2 -.…”

Section: Introductionsupporting

confidence: 80%

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Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare earth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts

2009

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The distribution of the rare earths and yttrium (REY) in co-existing hydrous Mn oxides and Fe oxides that form marine hydrogenetic ferromanganese crusts is used to better describe the partitioning and fractionation of the REY between these (hydr)oxides and seawater in the natural marine system. Four fractions (easily exchangeable, Mn-oxide-bound, Fe-oxidebound, and insoluble-residue-bound REY) were separated by an adjusted sequential leaching procedure from two ferromanganese crusts from the Central Pacific. The distribution of the REY differs significantly between these leaching fractions and gives evidence for decoupling of La, Ce, Gd, Y, and Lu from their respective neighbours in the REY series during partitioning between hydrous Fe oxides, Mn oxides and seawater. Both the Mn oxides and the Fe oxides display pronounced positive Ce anomalies of almost similar size. This suggests that in the natural marine system oxidative scavenging of Ce from seawater is not restricted to Mn oxides but also occurs on hydrous Fe oxides. The distribution of Ce between the Mn oxides and the hydrous Fe oxides follows that of the trivalent REY and contrasts sharply with that of tetravalent Zr, Hf and Th. This suggests that preferential Ce removal from seawater does not result from the oxidation of dissolved Ce(III) within the marine water column, but that Ce(III) is oxidized after its sorption at the metal (hydr)oxide surface. Patterns of apparent hydrous Fe oxide/Mn oxide distribution coefficients show a sigmoidal shape and display negative anomalies for La, Gd, Y, and Lu (and the M-type lanthanide tetrad effect), indicating preferential scavenging of these elements by the Mn oxides as compared to the Fe oxides. The pronounced differences between the REY distribution in the Mn oxides and that in the Fe oxides cannot solely be explained by the REY speciation in seawater, but require additional and mineral-specific REY fractionation during surface-complexation.

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Section: Cerium Oxidation In the Marine Environmentsupporting

confidence: 87%

Section: Introductionsupporting

confidence: 80%

Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare earth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts

2009

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“…6) may come from the intensive removal of Ho by Fe, Mn-oxyhydroxides (e.g., De Carlo et al, 1998;Koeppenkastrop and De Carlo, 1992;Quinn et al, 2006). Eu 2+ is also less readily scavenged compared to other REE (Hongo and Nozaki, 2001) in high temperature vent fluids.…”

Section: Y/ho Ratios and Mixing With Seawatermentioning

confidence: 99%

Geochemistry of REE and yttrium in hydrothermal fluids from the Endeavour segment, Juan de Fuca Ridge

et al. 2008

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Rare earth element and yttrium in hydrothermal fluids sampled from six high temperature vents and two diffuse flow sites on the Endeavour segment, Juan de Fuca Ridge by US-CHINA Joint Deep Dive Cruise in Aug. 2005 were analyzed by ICP-MS after being pre-concentrated by 20-fold. According to the species distributions calculated by GWB, the chondritenormalized REE patterns (REE CN ) of these fluids are characterized by LREE enrichment and positive Eu anomalies, which are mainly controlled by complexing with chloride. The (La/Yb) CN ratio does not correlate significantly with fluoride. Sulfate content are low in most high temperature fluids except in Gremlin vent fluids. Certain amounts of REE are complexed with sulfate that likely originates from oxidation of magmatic SO 2 and/or H 2 S in Gremlin. Sulfates, mostly come from seawater, are also responsible of large percentage of REE complexes in diffuse fluids.It is shown by the character of REY concentrations and the Y/Ho ratios that REE removed by Fe, Mn-oxyhydroxides is negligible in most of high temperature vent fluids. However, the Y/Ho ratios in Gremlin (Y/Ho = 160) and Faulty Towers (Y/Ho = 140) vent fluids are higher than that in other high temperature vent fluids, suggesting REE removal controlled by coprecipitation and scavenging. The negative Ce anomalies in diffuse fluids also result from the scavenging of mineral particles in the oxidizing conditions when mixing with seawater. Compared to ideal mixing fluids calculated by Mg content, two diffuse fluids display LREE-depleted patterns and enhanced positive Eu anomalies. Based on the REE characteristics of anhydrite, the REE distribution patterns of diffuse fluids are probably influenced largely by anhydrite precipitation under the seafloor at diffuse fluids sites. It is interesting to notice that the HREE CN pattern of Mothra vent fluids is similar to sediments but different from the sediment-starved hydrothermal fluids, suggesting they are likely remolded by the sediments in water-rock interaction zone and/or upflow zone nearby Mothra vent field. The provenance and character of these sediments bears further investigation.Keywords: hydrothermal fluids, rare earth element, Juan de Fuca Ridge, species abundance, Europium anomaly (Fouquet et al., 1993).Although the characteristics of REY in MOR systems have been well documented, the factors controlling the patterns and distributions of REY in hydrothermal fluids are still in debate. Klinkhammer et al. (1994a) systematically studied the REE of hydrothermal fluids from eight deep-sea hydrothermal areas and predicted that the REE distribution is dominated by crystochemical exchange with plagioclase phenocrysts. However, laboratory experiments indicated interstitial material and some secondary minerals are the main REE sources in the rock (Bach and Irber, 1998). Furthermore, coprecipitating with metal particles (German et al

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“…REE fractionation has been observed within specific soil horizons (Germund, 2004;Stille et al, 2006) and in carbonate dominated areas (Johannesson et al, 1999). Under more alkaline conditions (pH > 6), naturally occurring nano-colloids have strong binding capacity for REE (Marsac, 2013;Quinn et al, 2006). Regarding REE migration, some studies have shown that REE are immobile during surface processes (Szczepanski and Ilnicki, 2014).…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of rare earth elements in soils under different land uses in a typical karst area, Guizhou Province, Southwest China

2017

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Sorption of yttrium and rare earth elements by amorphous ferric hydroxide: Influence of pH and ionic strength

Cited by 118 publications

References 49 publications

Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare earth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts

Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare earth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts

Geochemistry of REE and yttrium in hydrothermal fluids from the Endeavour segment, Juan de Fuca Ridge

Geochemistry of rare earth elements in soils under different land uses in a typical karst area, Guizhou Province, Southwest China

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