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Accelerated carbonation for the treatment of landfilled cement kiln dust

Accelerated carbonation for the treatment of landfilled cement kiln dust

Antemir, Aurora, Gunning, Peter, Hills, Colin and Carey, Paula (2008) Accelerated carbonation for the treatment of landfilled cement kiln dust. In: Accelerated Carbonation for Environmental and Materials Engineering Conference, 1-3 October, 2008, Rome, Italy.

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Abstract

Accelerated Carbonation Technology (ACT) can be used to treat a wide range of alkaline wastes and metal-contaminated soils by exposing them to a carbon dioxide rich atmosphere in a way that promotes the massive precipitation of calcium carbonate. The material obtained has improved physical and chemical characteristics. This work presents the characterisation of historically deposited cement kiln dust (CKD) and its potential reactivity with carbon dioxide gas. The CKD investigated originated from a landfill, up to one hundred years old. The bulk chemical composition was determined by X-ray Fluorescence (XRF), the mineralogy of the untreated and carbonated CKD by X-ray Diffractometry (XRD) and the change in microstructure upon carbonation was examined by Scanning Electron Microscopy (SEM/EDS). Key characteristics of treated and untreated CKD such as carbon dioxide uptake, pH, and moisture content are presented and discussed.

Item Type: Conference or Conference Paper (Paper)
Uncontrolled Keywords: Carbonation, Cement kiln dust, Landfill, Treatment
Pre-2014 Departments: School of Science > Centre for Contaminated Land Remediation Research Group
Last Modified: 14 Oct 2016 09:33
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/13570

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