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The fixation and leaching of cement stabilized arsenic

Leist, Michael, Casey, John and Caridi, Domenico (2003) The fixation and leaching of cement stabilized arsenic. Waste Management, 23 (4). pp. 353-359. ISSN 0956-053x

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The solidification/stabilization of sodium arsenite, sodium arsenate, arsenic trioxide and arsenic pentoxide at dosages of approximately 10% has been investigated using sequential batch leaching tests. The leaching of arsenic, which was found to be diffusion based, was clearly least effective for those formulations containing additional iron(II). Calcium was found to influence the leaching of cement immobilized arsenic: those formulations containing the greatest Ca:As mole ratios were generally the most successful. Analysis using both FTIR and SEM revealed substantial changes to the cement matrices of those formulations to which the ferrous sulfate had been added. Ettringite was identified in the cement+ferrous sulfate formulations.

Item Type: Article
Uncontrolled Keywords: arsenic analysis, arsenic chemistry, calcium chemistry, carcinogens analysis, carcinogens chemistry, conservation of natural resources, construction materials, diffusion, environmental pollution prevention & control, microscopy, electron, scanning, refuse disposal, spectroscopy, fourier transform infrared;
Subjects: Historical > RFCD Classification > 300000 Agricultural, Veterinary and Environmental Sciences
Historical > RFCD Classification > 250000 Chemical Sciences
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: Ms Phung T Tran
Date Deposited: 17 Oct 2008 04:02
Last Modified: 11 Apr 2017 08:50
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Citations in Scopus: 50 - View on Scopus

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