503 14 archive 17 disk0/00/00/05/03 2008-01-18 00:01:49 2008-01-18 00:01:49 2008-01-18 00:01:49 article show jegalaxmi24@yahoo.co.uk Jewaratnam, Jegalakshimi jegalaxmi24@yahoo.co.uk Ezzat Chan Abdullah Aziz A.R. University of Malaya. Faculty of Engineering. Dept. of Chemical Engineering pub T sch_civ public In this project, sludge from a waste water treatment plant was used to perform resource recovery activity due to its heavy metals content. It contains large amount of aluminum, calcium and ferum and traces of zinc, copper, nickel, magnesium and stanum. Firstly, the traces of metals were recovered using electrodeposition method and the remaining materials were used to produce samples through vitrification process after mixing it with clay. The samples produced are analysed for various parameters to classify and evaluate its usefulness as general building and engineering materials for various usages. In Malaysia, sludge is produced in abundance. Only a small portion of it was exported for treatment and recovery in other countries. The sludge in this work was dried and powdered and added to clay in various proportions. A 8”x31/2”x1/2” size of samples were produced by using manual press operated at 180 psi. The samples were dried in an oven at 105°C for 24 hours before firing in a kiln at 1050°C using specific temperature program to optimize vitrification process. The fired samples were evaluated for specific engineering applications. The thermal conductivity and sound barrier characteristics were evaluated. The project is under progress. 2006-12 published Engineering e-Transaction 1 2 Faculty of Computer Science & Information Technology, University of Malaya 5-8 TRUE 1823-6379 http://ejum.fsktm.um.edu.my/ArticleInformation.aspx?ArticleID=400 A.G. Liew, I. Azni, C.H.K. Wong, A.A Samad., M.J.M.M. Noor and A.M. Baki, “ Incorporation of Sewage Sludge in Clay Brick and its Characterization”, Waste Management & Research, ISSN 0734-242X, Waste Manage Res: 22: UPM and Indah Water Consortium, pp. 226-233,2004. Malaysian Environmental Quality Report 2002,DOE, Ministry of Science, Technology and Environment, Malaysia. P. Meukam, Y. Jannot, A. Noumowe and T.C. Kofane, “Thermo physical characteristics of economical building materials”, Construction and Building Materials :18: pp. 437-443, 2004. S. Netpradit, P. Thiravetyan and Towprayoon S., “Application of ‘waste’ metal hydroxide sludge for adsorption of azo reactive dyes”, Pergamon, water research : 37: pp763-772, 2003. G.E Oliveira and J.N.F. Holanda, “Use of mix of clay/solid waste from steel works for civil construction materials”, Waste Manage and Res: 22: pp358-363, 2004. M.A Rouf and M.A. Hossain “Effects of using arsenic-iron sludge in brick making”, www.freeonlinejournal.com, 2004 P.Torres, H.R.Fernandes, S.Agathopoulos, D.U.Tulyaganov, J.M.F.Ferreira, “Incorporation of granite cutting sludge in industrial porcelain tile formulations”, Journal of the European Ceramic Society, 2003. 41 3 503 1 application/pdf en public

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