Utilization of cathode ray tube waste: encapsulation of PbO-containing funnel glass in Portland cement clinker.

Nirut Lairaksa, Anthony R Moon, Natt Makul

The Project Office of Consortium on Doctoral Philosophy Programs of Rajabhat University, Phranakhon Rajabhat University, 9 Changwattana Road, Bangkhen, Bangkok 10220, Thailand.

Journal of environmental management 2013 Mar 15

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The disposal of cathode ray tube (CRT) generates large quantities of leaded glass waste. The encapsulation of glass from the funnel portion of CRT in cement clinker was investigated. Samples of cement raw material containing 0 (control), 0.1, 0.2, 0.3, 0.4, or 0.5 wt% of CRT funnel glass ground to less than 75 μm were heated to 1480 °C in an electric furnace for 1.5 h at a heating rate of 5 °C/min to produce cement clinker. The Pb encapsulation and chemical composition of the clinkers were analysed using X-ray techniques and atomic absorption spectroscopy (AAS). The maximum PbO encapsulation occurred in mixtures containing 0.1 wt% funnel glass. Copyright © 2012 Elsevier Ltd. All rights reserved.

Citation

Nirut Lairaksa, Anthony R Moon, Natt Makul. Utilization of cathode ray tube waste: encapsulation of PbO-containing funnel glass in Portland cement clinker. Journal of environmental management. 2013 Mar 15;117:180-6