Sorption of Co2+ and Sr2+ by waste-derived 11 Å tobermorite

Coleman, Nichola J.; Brassington, David S.; Raza, Atiya; Mendham, Andrew P.

doi:10.1016/j.wasman.2005.01.019

Cited by 79 publications

(47 citation statements)

References 24 publications

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“…Solid phase was assessed by XRD and, when deemed necessary, by Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy, while residual metal concentration of this clear solution was determined by atomic absorption spectrometry (AAS) (Perkin-Elmer AAnalyst-800) [23]. Steadystate data were fitted to the Langmuir and Freundlich models [25].…”

Section: Experimental Testsmentioning

confidence: 99%

Solidification/stabilization of toxic metals in calcium aluminate cement matrices

Navarro-Blasco

Durán

Sirera

et al. 2013

Journal of Hazardous Materials

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The ability of calcium aluminate cement (CAC) to encapsulate toxic metals (Pb, Zn and Cu) was assessed under two curing conditions. Changes in the consistency and in the setting time were found upon the addition of the nitrates of the target metals. Both Pb and Cu caused a delay in CAC hydration, while Zn accelerated the stiffening of the mortar. Compressive strengths of the metal-doped mortars, when initially cured at 60ºC/100% RH, were comparable with that of the free-metal mortar. Three different pore size distribution patterns were identified and related to the compounds identified by XRD and SEM. Sorbent capacities of CAC for the toxic metals were excellent: a total uptake was achieved for up to 3 wt.% loading of the three metals. In this way, CAC mortars were perfectly able to encapsulate the toxic metals, allowing the use of CAC for waste management as proved by the leaching tests.

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Section: Experimental Testsmentioning

confidence: 99%

Solidification/stabilization of toxic metals in calcium aluminate cement matrices

Navarro-Blasco

Durán

Sirera

et al. 2013

Journal of Hazardous Materials

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“…The last trend was motivated not only by the importance of tobermorite as autoclaved building materials, but also by other advances applications. These applications include; non-asbestos heat insulations [12], adsorbents for organic or inorganic effluents [13,14], radioactive waste stabilization and cation exchangers [15][16][17][18]. * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis and characterization of aluminium and sulfate substituted 1.1nm tobermorites

Mostafa

Shaltout

Omar

et al. 2009

Journal of Alloys and Compounds

140

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“…In the past decades, various inorganic ion exchange materials have been investigated for elimination of 90 Sr, such as zeolites [2][3][4][5][6], minerals [7][8][9][10][11][12], hydrous metal oxides and their mixtures [13][14][15][16][17][18][19][20]. However, the pH of LLRW solutions, varying in a wide range, is often a restrictive factor since most sorbents mentioned above exhibit poor performance in acidic solutions.…”

Section: Introductionmentioning

confidence: 99%