Development catalytic properties of recyclable copper from ferrite process by using phase transfer reaction

Abstract

Hydroxide precipitation is ineffective to remove copper in copper complex wastewater that used as a material of a variety of anthropogenic industries. The ferrite process has been proposed as a promising strategy for copper complex wastewater treatment by using strong oxidizer. However, it was found that the product consisted of dominant amorphous structure of several metal forms. This study showed how to relieve these problems by convert sludge to be an isomorphous structure by using phase transfer reaction. Thermogravimetric and differential thermal analysis (TG-DTA) was used to examine the temperature condition. The annealed precipitate was compared with an as-prepared precipitate by using an X-ray fluorescence spectrometer (XRF) and The Fourier Transform Infrared Spectrometer (FTIR). Then, sludge obtained from the ferrite process was sintered at 950 ^°C for 2 hours. X-ray diffraction spectrometer (XRD) demonstrated that the crystalline of the annealed precipitate was more likely a tetragonal distortion inverse spinel. From the result of all techniques, it may be confirmed the sludge from the ferrite process after sintering has more stable; in addition, it has characteristics to be a catalyst. In future work, it is necessary to studying can replace a heterogeneous catalytic reaction.