Abstract: A manganese immobilization technology in a fluidized-bed reactor (FBR) was developed by using a waste iron oxide (i.e., BT-3) as catalyst which is a by-product from the fluidized-bed Fenton reaction (FBR-Fenton). It was found that BT-3 could easily reduce potassium permanganate (KMnO4) to MnO2. Furthermore, MnO2 could accumulate on the surface of BT-3 catalyst to form a new Fe-Mn oxide. Laboratory experiments were carried out to investigate the KMnO4-reduction mechanism, including the effect of KMnO4 concentration, BT-3 dosage, and operational solution pH. The results showed that the pH solution was a significant factor in the reduction of KMnO4. At the optimum level, pHf 6, KMnO4 was virtually reduced in 10 min. A pseudo-first order reaction was employed to describe the reduction rate of KMnO4.
Keywords: Fluidized-Bed Reactor (FBR); iron oxide; potassium permanganate
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Li, G.-X.; Huaug, Y.-H.; Chen, T.-C.; Shih, Y.-J.; Zhang, H. Reduction and Immobilization of Potassium Permanganate on Iron Oxide Catalyst by Fluidized-Bed Crystallization Technology. Appl. Sci. 2012, 2, 166-174.
Li G-X, Huaug Y-H, Chen T-C, Shih Y-J, Zhang H. Reduction and Immobilization of Potassium Permanganate on Iron Oxide Catalyst by Fluidized-Bed Crystallization Technology. Applied Sciences. 2012; 2(1):166-174.
Li, Guang-Xia; Huaug, Yao-Hui; Chen, Teng-Chien; Shih, Yu-Jen; Zhang, Hui. 2012. "Reduction and Immobilization of Potassium Permanganate on Iron Oxide Catalyst by Fluidized-Bed Crystallization Technology." Appl. Sci. 2, no. 1: 166-174.