Uranium biosorption by the lichen trapelia involuta at a uranium mine

Purvis, O. William; Bailey, Elizabeth H.; McLean, Judith; Kasama, Takeshi; Williamson, Ben J.

doi:10.1080/01490450490275398

Lability of copper bound to humic acid (2015)
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Geochemical speciation models generally include the assumption that all metal bound to humic acid and fulvic acid (HA, FA) is labile. However, in the current study, we determined the presence of a soluble ‘non-labile’ Cu fraction bound to HA extracte... Read More about Lability of copper bound to humic acid.

Selenium in commercial beer and losses in the brewing process from wheat to beer (2015)
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Lability of Pb in soil: effects of soil properties and contaminant source (2014)
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Environmental Context: There is growing concern that lead (Pb) in the environment may cause adverse health effects in human populations. We investigated the combined use of isotopic abundance and isotopic dilution to show how the origins of soil Pb... Read More about Lability of Pb in soil: effects of soil properties and contaminant source.

Quantification of changes in zero valent iron morphology using X-ray computed tomography (2013)
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Morphological changes within the porous architecture of laboratory scale zero valent iron (ZVI) permeable reactive barriers (PRBs), after exposure to different groundwater conditions, have been quantified experimentally for different ZVI/sand ratios... Read More about Quantification of changes in zero valent iron morphology using X-ray computed tomography.

Does returning sites of historic peri-urban waste disposal to vegetable production pose a risk to human health? - A case study near Manchester, UK (2012)
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Urban waste disposal occurred on fenland to the west of Manchester, England, between 1900 and 1964. The reclaimed fenland, Chat Moss, is now used for mixed arable farming. A total of 1.92 Mt of waste including privy midden, street sweepings, clinkers... Read More about Does returning sites of historic peri-urban waste disposal to vegetable production pose a risk to human health? - A case study near Manchester, UK.

Iodine dynamics in soils (2011)
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We investigated changes in iodine ( 129I) solubility and speciation in nine soils with contrasting properties (pH, Fe/Mn oxides, organic carbon and iodine contents), incubated for nine months at 10 and 20°C. The rate of 129I sorption was greater in s... Read More about Iodine dynamics in soils.

Fractionation of lead in soil by isotopic dilution and sequential extraction (2011)
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Environmental contextThe chemical reactivity of lead in soil is difficult to assess and depends on both soil conditions and the origins of the lead. This paper tests the combined application of lead isotopic techniques and chemical extraction against... Read More about Fractionation of lead in soil by isotopic dilution and sequential extraction.

Coordination of Cd2+ ions in the internal pore system of zeolite-X: A combined EXAFS and isotopic exchange study (2009)
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The effect of prolonged contact time (up to 130 days) on the immobilization of Cd by sorption to calcium exchanged zeolite-X (CaX), under environmentally relevant conditions, was studied using both isotopic exchange and extended X-ray absorption fine... Read More about Coordination of Cd2+ ions in the internal pore system of zeolite-X: A combined EXAFS and isotopic exchange study.

Quantification of pore clogging characteristics in potential permeable reactive barrier (PRB) substrates using image analysis (2006)
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Permeable reactive barriers (PRBs) are now an established approach for groundwater remediation. However, one concern is the deterioration of barrier material performance due to pore clogging. This study sought to quantify the effect of pore clogging... Read More about Quantification of pore clogging characteristics in potential permeable reactive barrier (PRB) substrates using image analysis.

Time-dependent surface reactivity of Cd sorbed on calcite, hydroxylapatite and humic acid (2005)
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Time-dependent surface reactivity of Cd sorbed on calcite, hydroxylapatite and humic acid (2005)
Journal Article

Changes in the lability and local environment of Cd sorbed onto calcite, hydroxylapatite and humic acid have been investigated as a function of time (30 min–9 months) using a combination of X-ray adsorption spectroscopy (XAS) and isotopic dilution te... Read More about Time-dependent surface reactivity of Cd sorbed on calcite, hydroxylapatite and humic acid.

Quantification of the effects of pore clogging in potential PRB substrates using image analysis (2005)
Journal Article

Permeable reactive barriers (PRBs) have demonstrated a promising approach for groundwater remediation. However, one concern is the deterioration of barrier material performance due to mineral precipitation and pore clogging. This study sought to quan... Read More about Quantification of the effects of pore clogging in potential PRB substrates using image analysis.

Suitability testing of selected wastes and natural substrates for permeable reactive barriers (PRBs) (2005)
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Performance of barrier materials is important for the long-term success of permeable reactive barriers (PRBs). A number of selected wastes and natural materials were tested in batch experiments for their ability to remove heavy metals from synthetic... Read More about Suitability testing of selected wastes and natural substrates for permeable reactive barriers (PRBs).

The geochemistry of fluids from an active shallow submarine hydrothermal system: Milos island, Hellenic Volcanic Arc (2005)
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Geothermal activity in the Aegean island of Milos (Greece), associated with island-arc volcanism, is abundant both on-and off-shore. Hydrothermal fluids venting from several sites, mainly shallow submarine (up to 10 m), but also just above seawater l... Read More about The geochemistry of fluids from an active shallow submarine hydrothermal system: Milos island, Hellenic Volcanic Arc.

Natural and waste materials as metal sorbents in permeable reactive barriers (PRBs) (2005)
Journal Article

A range of waste products and natural materials including chitin, fly ash, clay soil, cocoa shell, calcified seaweed and the natural zeolite clinoptilolite were tested in batch experiments to assess their ability to remove metals from a synthetic gro... Read More about Natural and waste materials as metal sorbents in permeable reactive barriers (PRBs).

Time-dependent surface reactivity of Cd sorbed on calcite, hydroxylapatite and humic acid (2005)
Journal Article

Changes in the lability and local environment of Cd sorbed onto calcite, hydroxylapatite and humic acid have been investigated as a function of time (30 min-9 months) using a combination of X-ray adsorption spectroscopy (XAS) and isotopic dilution te... Read More about Time-dependent surface reactivity of Cd sorbed on calcite, hydroxylapatite and humic acid.

Uranyl-citrate speciation in acidic aqueous solutions - An XAS study between 25 and 200 °C (2004)
Journal Article

Speciation of uranium(VI) in citrate (2-hydroxypropane-1,2, 3-tricarboxylic acid) solutions between 25 and 200 °C, at pH values between 0.8 and 3.7 and at citrate/U ratios between 0.5 and 50 has been investigated using U LIII-edge X-ray absorption sp... Read More about Uranyl-citrate speciation in acidic aqueous solutions - An XAS study between 25 and 200 °C.

Uranyl acetate speciation in aqueous solutions-An XAS study between 25°C and 250°C (2004)
Journal Article

Speciation of uranium (VI) in acetate solutions between 25 and 250°C, at pH values between 1.8 and 3.8 and acetate/uranium (Ac/U) ratios of 0.5 to 100 has been investigated using uranium LIII-edge X-ray absorption spectroscopy. With increasing pH the... Read More about Uranyl acetate speciation in aqueous solutions-An XAS study between 25°C and 250°C.

Uranium biosorption by the lichen trapelia involuta at a uranium mine (2004)
Journal Article

Metal localisation was investigated in the lichenised ascomycete Trapelia involuta growing on a range of uraniferous minerals including metazeunerite [Cu(UO2)2(AsO42·8H2O], metatorbernite [Cu(UO22(PO4)2·8H2O], autunite [Ca(UO2)2(PO42·10H2O] and urani... Read More about Uranium biosorption by the lichen trapelia involuta at a uranium mine.

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