Coleman, N.J., Trice, C.J. and Nicholson, J.W. (2009) 11 Å tobermorite from cement bypass dust and waste container glass: A feasibility study. International Journal of Mineral Processing, 93 (1). pp. 73-78. ISSN 0301-7516 (doi:10.1016/j.minpro.2009.06.002)

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Abstract

A novel one-step hydrothermal synthesis of 11 Å tobermorite, a cation exchanger, from a unique combination of waste materials is reported. 11 Å tobermorite was prepared from stoicheiometric quantities of cement bypass dust and waste container glass at 100 °C in water. The product also comprised 10 wt.% calcite and trace quartz as residual parent phases from the cement bypass dust. In a batch sorption study at 20 °C the uptakes of Cd2+ and Pb2+ by the waste-derived tobermorite product were found to be 171 mg g− 1 and 467 mg g− 1, respectively, and in both cases the removal process could be described using a simple pseudo-second-order rate model (k2 = 2.30 × 10− 5 g mg− 1 min− 1 and 5.09 × 10− 5 g mg− 1 min− 1, respectively). The sorption characteristics of the 11 Å tobermorite are compared with those of other waste-derived sorbents and potential applications are discussed.

Item Type:	Article
Additional Information:	[1] Acknowledgements (funding): Financial support from the Nuffield Foundation (Undergraduate Research Bursary URB/34252 2007 for CJT), the Royal Society (Research Grant 2007/R1) and the Royal Society of Chemistry (Research Fund Grant 2007).
Uncontrolled Keywords:	tobermorite, mineral recycling, heavy metal removal, pseudo-second-order kinetic model, sorption
Subjects:	Q Science > QD Chemistry
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science > School of Science (SCI)
Related URLs:	Publisher
Last Modified:	17 Oct 2016 09:12
URI:	http://gala.gre.ac.uk/id/eprint/10185

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