Ashraf A. Shaltout, Rabeia S. F. El-Hallag
Research on extracting secondary raw materials from hazardous waste is gaining global importance, particularly regarding spent catalysts containing heavy metals which pose environmental threats. This study aims to recover vanadium from spent catalysts discharged during sulfuric acid production, which contain 4.66% V2O5. A series of experiments were conducted using four different leaching acids: tartaric, oxalic, acetic, and citric acids, to assess their effectiveness under varying conditions. Temperature, reagent concentration, leaching duration, and solid/liquid ratio were systematically tested. The results demonstrated that under optimal conditions, an impressive 95% of vanadium was recovered through citric acid leaching, utilizing specific parameters of a 2% solid/liquid ratio, 1 M citric acid at 70 °C, pH adjustments, and a leaching duration of 120 minutes. The findings underscore the significant potential for recovering vanadium pentoxide from spent vanadium catalysts that are typically generated in the sulfuric acid industry in Egypt.
@article{101a6f44-0b03-425c-9860-a5a0bef9c166,
title={Green recovery of vanadium from spent vanadium catalyst from sulfuric acid production},
author={Ashraf A. Shaltout and Rabeia S. F. El-Hallag},
year={2026},
language={en}
}TY - JOUR TI - Green recovery of vanadium from spent vanadium catalyst from sulfuric acid production AU - Ashraf A. Shaltout AU - Rabeia S. F. El-Hallag PY - 2026 LA - en ER -
Blair Burwell
The exhaustion of current vanadium sources and the emergence of new applications are driving the need for innovative methods of extraction. The aim of
This paper addresses the challenge of assessing the feasibility of wind power plant projects at sites with insufficient or no local historic wind data
Important advances in electrochemical engineering technology over the last three decades have fostered the development of a lternative methods to alle
Increasing volumes of waste printed circuit boards from obsolete electronic equipment posed escalating environmental risks and resource losses due to