Abstract
ABSTRACTThe coal fly ash (CFA) in the present study contains a high content of gallium, which is categorized as a strategic metal. Gallium extraction from CFA is an important step toward its reutilization. Two different processes for gallium extraction were systematically investigated and compared. The effects of mixed acid, microwave power, microwave digestion time, the amount of HNO3, HF, and HCl were studied. The results revealed that although both open wet digestion and microwave-assisted digestion could successfully leach gallium, the former method consumed a longer time. The microwave-assisted digestion was a time-saving way but required the use of HCl. Compared to previous studies, the processes proposed in this article can greatly reduce environmental pollution and cost as they halved the use of acids.
Sign-in/Register to access full text options 
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 callMore From: International Journal of Coal Preparation and Utilization
Disclaimer: 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.
