%0 Conference Paper
%A Zain, A.M.
%A Mahmud, H.
%A Shaaban, Md.G.
%D 2010
%F scholars:1010
%K Cement hydration process; Cement replacement; Cement replacement materials; Chemical manufacturing; Hazardous wastes; Industrial activities; Ordinary Portland cement; Organic materials; Petroleum; Petroleum sludge; Pharmaceutical industry; Rice husk ash; Silica content; Sludge; Strength, Carbonate minerals; Environmental engineering; Hydration; Porosity; Portland cement; Silica; Silica gel; Stabilization; Waste treatment, Sludge disposal
%P 30-34
%R 10.1109/ICBEE.2010.5650631
%T Petroleum sludge stabilization and solidification: An alternative treatment using ordinary Portland cement and rice husk ash
%U https://khub.utp.edu.my/scholars/1010/
%X Industrial activities generate significant amount of hazardous waste from refinery, chemical manufacturing, cosmetic, drug and pharmaceutical industry. Petroleum sludge is immobilized using ordinary Portland cement to stabilize and solidify the contaminant in the sludge as an alternative treatment for final disposal of the waste. The waste has significant amount of organic material which normally interfere with the cement hydration process. A way to improve is by addition of cement replacement material. Rice husk ash (RHA) was added at 5, 10 and 15  cement replacement. The 5  RHA exhibited the best performance with regards to unconfined compressive of 24.9 N/mm2. The strength is better than the sludge cement of 19.2 N/mm2. Porosity was found to increase with increasing RHA content. The surface morphology of solidified cement with voids was found to be in the range of 10 to 15 μm for 15  RHA. RHA addition promotes carbonation. Its high silica content reacts with CO 2 to form calcite and silica gel. © 2010 IEEE.
%Z cited By 1; Conference of 2nd International Conference on Chemical, Biological and Environmental Engineering, ICBEE 2010 ; Conference Date: 2 November 2010 Through 4 November 2010; Conference Code:83351