Leaching of Iron and Aluminum from Red Mud and Preparation of Coagulants 


Vol. 15,  No. 1, pp. 38-41, Mar.  2009


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  Abstract

Red mud is generated as a waste byproduct during the production of aluminum hydroxide/alumina from bauxite ore in the Bayer process. In this study coagulants for wastewater treatment were prepared by leaching iron and aluminum from red mud with hydrochloric acid. The removal efficiency of heavy metal ions by the red mud coagulant increased with increasing the adjusted pH value of the synthetic wastewater. When the red mud coagulant was prepared, the leaching efficiency of Fe decreased with increasing the weight of red mud, while the pH value of the red mud coagulant increased. The solution of the red mud coagulant mixed with water was reacted again with red mud to produce the leached solution, which had higher concentrations of Fe and Al and a higher pH value than the red mud coagulant. Also, its pH value was comparable to that of other coagulants: FeCI3 and Fe2(SO4)3.

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  Cite this article

[IEEE Style]

L. JR, H. IG, B. JH, "Leaching of Iron and Aluminum from Red Mud and Preparation of Coagulants," Clean Technology, vol. 15, no. 1, pp. 38-41, 2009. DOI: .

[ACM Style]

Lee JR, Hwang IG, and Bae JH. 2009. Leaching of Iron and Aluminum from Red Mud and Preparation of Coagulants. Clean Technology, 15, 1, (2009), 38-41. DOI: .

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

한국연구재단 등재학술지