|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||REWAS 2022: Poster Session
||Recycling of Automobile Discarded Ceramic Converters for Pt-group Metals’ Recovery through Pressure CN-leaching
||Sadia Ilyas, Hyunjung Kim, Rajiv Ranjan Srivastava
|On-Site Speaker (Planned)
Recycling of automobile catalytic converters was studied using the cyanidation at an elevated temperature and pressure that dissolving Pt-group metals (PGMs) followed by their liquid-liquid separation with ionic-liquid Cyphos IL101. PGMs were efficiently dissolved by autoclaving of the spent catalysts sample preconditioned in 2.0 M NaOH solution at 90 C for 60 min duration. The cyanide used in the study was metabolically produced by Chromobacterium violaceum. Under the optimized autoclave leaching process at temperature 150 C, pO2 200 psi, and time 120 min; approximately 90% PGMs’ could be dissolved. The residual cyanide can be subjected to the biodegradation within the bacterial life-cycle.
||Extraction and Processing, Recycling and Secondary Recovery, Sustainability