Abstract
A process for synthesizing Gamma alumina from kaolinitic sandstone ore has been described in this paper. Fine kaolin was recovered from the sandstones after aggressive attrition scrubbing process followed by 2" and 1" hydro- cyclone classification. The produced −25 μm kaolin was transformed to active meta-kaolin via calcination at 750 °C for 5 h. Through metakaolin- H2SO4 interactions, and consequently precipitation in ethanol solution, aluminum sulfate was formed. After dryness and calcination at 900 °C for 2 h γ-alumina was prepared. The FT-IR, DLS, BET, XRD, SEM and EDX analyses confirmed the high purity of the nanosized γ-alumina product. In addition, the prepared γ-alumina was examined as the sorbent for rare earth species from waste materials. Adsorption and thermodynamic studies, in addition to the adsorption selectivity, desorption process, and reusability showed promising performance results. The maximum adsorption capacity of the prepared γ-alumina reached 142 mg/g.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
