Platinum Group Metal Recycling Technology Development - Final Report

Lawrence Shore

关键词: CAPITAL;    CATALYSTS;    DEPRECIATION;    ELECTRODES;    FUEL CELLS;    HYDROFLUORIC ACID;    LEACHING;    MEMBRANES;    MILLING;    PLATINUM;    RECYCLING Platinum recycling: NafionÂŽ;    Hydrogen fluoride;    Membrane electrode assembly;    Granulation;    Agglomeration;    Acid leaching;   

DOI  :  10.2172/962699
RP-ID  :  DOE/GO13104-2
PID  :  OSTI ID: 962699
Others  :  TRN: US201003%%720

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

BASF Catalysts LLC, formerly Engelhard Corporation, has completed a project to recover Pt from PEM fuel cell membrane electrode assemblies. The project, which began in 2003, has met the project objective of an environmentally-friendly, cost-effective method for recovery of platinum without release of hydrogen fluoride. This has been achieved using a combination of milling, dispersion and acid leaching. 99% recovery of Pt was achieved, and this high yield can be scaled up using one vessel for a single leach and rinse. Leaching was been successfully achieved using a 10% solids level, double the original target. At this solids content, the reagent and utility costs represent ~0.35% of the Pt value of a lot, using very conservative assumptions. The main cost of the process is capital depreciation, followed by labor.