Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Stephanie Handley-Sidhu"'
Autor:
Vernon R. Phoenix, Lindsay A. McMillan, Mark O. Cuthbert, Michael S. Riley, Stephanie Handley-Sidhu, Dominique J. Tobler
Publikováno v:
Environmental Science & Technology. 47:13637-13643
Microbially induced calcite precipitation (MICP) offers an attractive alternative to traditional grouting technologies for creating barriers to groundwater flow and containing subsurface contamination, but has only thus far been successfully demonstr
Autor:
Michael L. Johns, Joanna C. Renshaw, E. Sham, Lynne E. Macaskie, S. Nougarol, Stephanie Handley-Sidhu, Mark O. Cuthbert, Michael D. Mantle
Publikováno v:
International Journal of Environmental Science and Technology. 10:881-890
The enzyme urease drives the hydrolysis of urea leading to the release of ammonium ions and bicar- bonate; in the presence of calcium, the rise in pH leads to increased calcium carbonate saturation and the subsequent precipitation of calcite. Althoug
Autor:
Vernon R. Phoenix, Joanna C. Renshaw, Stephanie Handley-Sidhu, Rae Mackay, Mark O. Cuthbert, Michael S. Riley, Dominique J. Tobler
Publikováno v:
Ecological Engineering. 41:32-40
Despite the potential contribution of microbially induced carbonate precipitation (MICP) to a range of environmental technologies, little is known about the controls on the rate of ureolysis and precipitate size and morphology using attached bacteria
Autor:
Stephanie Handley-Sidhu, Kiel Holliday, Thorsten Stumpf, Kathy Dardenne, Clemens Walther, Lynne E. Macaskie, Joanna C. Renshaw
Publikováno v:
Langmuir, 28, 3845-3851
One of the most toxic byproducts of nuclear power and weapons production is the transuranics, which have a high radiotoxicity and long biological half-life due to their tendency to accumulate in the skeletal system. This accumulation is inhomogeneous
Autor:
Lynne E. Macaskie, Stephanie Handley-Sidhu, Shoichi Tsuruyama, Sayo Moriyama, Keiko Sasaki, Joanna C. Renshaw
Publikováno v:
MATERIALS TRANSACTIONS. 53:1267-1272
With the recent Fukushima incident, there is an urgent need to find cost effective and workable permeable reactive barrier (PRBs) for the remediation/retardation of problematic radionuclides. Catfish bones were calcined at various temperatures (400
Autor:
Dominique J. Tobler, Joanna C. Renshaw, Vernon R. Phoenix, Mark O. Cuthbert, Richard B. Greswell, Stephanie Handley-Sidhu, Michael S. Riley
Publikováno v:
Geochimica et Cosmochimica Acta. 75:3290-3301
Ureolysis-driven calcite precipitation has potential to seal porosity and fracture networks in rocks thus preventing groundwater flow and contaminant transport. In this study urea hydrolysis and calcite precipitation rates for the model bacterium Spo
Autor:
Miranda J. Keith-Roach, Christopher Boothman, Francis R. Livens, James P. Holt, R. Alvarez, Jonathan R. Lloyd, David J. Vaughan, Paul L. Wincott, Stephanie Handley-Sidhu
Publikováno v:
Geomicrobiology Journal. 28:457-470
The decomposition of depleted uranium (DU) alloy in the presence of microorganisms characteristic of clay-rich soils has been studied using microcosm experiments. To assess the possible roles of specific groups of soil microorganisms, enrichment cult
Publikováno v:
Biotechnology Letters. 33:79-87
Hydroxyapatites were analysed using electron microscopy, X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis. Examination of a bacterially produced hydroxyapatite (Bio-HA) by scanning electron microscopy showed agglomerated nano-sized parti
Autor:
Stephanie Handley-Sidhu, Miranda J. Keith-Roach, Francis R. Livens, Paul J. Worsfold, Nicholas D. Bryan, David J. Vaughan
Publikováno v:
Chemosphere. 77:1434-1439
The firing of depleted uranium (DU) weapons during conflicts and military testing has resulted in the deposition of DU in a variety of sand-rich environments. In this study, DU-amended dune sand microcosm and column experiments were carried out to in
Autor:
Jonathan R. Lloyd, Christopher Boothman, Mustafa Sajih, Miranda J. Keith-Roach, David J. Vaughan, R. Alvarez, Stephanie Handley-Sidhu, Francis R. Livens, Paul J. Worsfold
Publikováno v:
Handley-Sidhu, S, Worsfold, P J, Livens, F R, Vaughan, D J, Lloyd, J R, Boothman, C, Sajih, M, Alvarez, R & Keith-Roach, M J 2009, ' Biogeochemical controls on the corrosion of depleted uranium alloy in subsurface soils ', Environmental Science and Technology, vol. 43, no. 16, pp. 6177-6182 . https://doi.org/10.1021/es901276e
Military activities have left a legacy of depleted uranium (DU) penetrator waste in the near-surface terrestrial environment. To understand the fate of this DU alloy, the mechanisms and controlling factors of corrosion need to be determined. In this