Enhanced recovery of aluminum from wastewater using a fluidized bed homogeneously dispersed granular reactor.

This study deals with the recovery of aluminum from aqueous solutions using Fluidized-bed homogeneous granulation process (FBHGP) without seeds. The hydraulic operating conditions were optimized using Box-Behnken Design (BBD) to attain the optimum aluminum removal (AR%) and granulation ratio (GR%). Optimum values of AR% = 98.8% and GR% = 96.9% were attained at the following conditions: influent aluminum concentration, 334.1 mg L-1; precipitant pH, 10.4; molar ratio (MR) of precipitant to metal [OH-]in/[Al3+]in, 2.5. The characteristics of the granules were comparable with those of orthorhombic structure of aluminum oxide (Al2.66O4). FBHGP was proven to be effective as dictated by the reaction mechanism in the recovery of aluminum from aluminum-rich aqueous solutions. PMID: 30784739 [PubMed - indexed for MEDLINE]
Source: Chemosphere - Category: Chemistry Authors: Tags: Chemosphere Source Type: research