Reduction of Toxic Cr6+ Ions Using Fluidized Bed of Iron Particles
- *Corresponding Author:
- Mansour MS
Chemical Engineering Department
Faculty of Engineering
E-mail: [email protected]
Received date: February 06, 2016; Accepted date: February 16, 2016; Published date: February 21, 2016
Citation: Semary MM, Zatout AA, Nosier SA, Mansour MS (2016) Reduction of Toxic Cr6+ Ions Using Fluidized Bed of Iron Particles. Ind Chem 2:116. doi:10.4172/2469-9764.1000116
Copyright: © 2016 Semary MM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The kinetics of the cementation of chromium ions from potassium dichromate solution onto fluidized bed of iron particles were investigated in a stirred tank reactor. Variables studied were physical properties of the solution, stirring speed (rpm) and temperature. The rate of cementation was found to increase with increasing rpm and concentration. The rate of cementation was expressed in terms of the liquid–solid mass transfer coefficient (k). The data were correlated by the equation:
The high rates of mass transfer obtained in this work and the high area per unit volume of fluidized bed of iron qualify them for building high space time reactors suitable for purification of hydrometallurgical leach liquors and removal of heavy metal from waste water by cementation.