Abstract—Sludge, is a by-product from the water works plants, has become a new challenge for the Egyptian government. In this study, a novel combination of chemical conditioning, Fenton’s reagent, with the application of solar drying were examined. Evaporative solar dryer system has been installed on the sun-shine to convert alum sludge into a drier, through solar radiation exposure resulting in decreased moisture concentration. The experimental design methodology was applied to optimize the dewatering techniques using the solar-photo-Fenton’s reagent. The variables considered were the, H
2O
2 and Fe
3+ concentrations and pH of the sludge. The experimental design allowed to develop the model for optimizing the reaction variables (after 3 h of reaction). Under the optimum conditions, 94% solids was experimentally reached. Both H
2O
2 and Fe
3+ concentrations have an important effect in the dewatering. Solar sludge drying was proved to be efficient for regions which receive high annual solar radiation such as Egypt.
Index Terms—Alum sludge, drying, Fenton’s reagent, response surface methodology, solar energy.
M. A. Tony is with the Faculty of Engineering, Minofya University, Minofya, Egypt (e-mail: maha_tony1@ yahoo.com).
A. M. Tayeb is with Minia University, Faculty of Engineering, Minia, Egypt (e-mail: aghareed1@yahoo.com).
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Cite: Maha A. Tony and Aghareed A. Tayeb, "Response Surface Regression Model in Optimization of Alum Sludge Drying Facility: Solar-Fenton’s Reagent Dewatering," International Journal of Chemical Engineering and Applications vol. 7, no. 5, pp. 331-335, 2016.
