Investigation of platinum recovery from a spent refinery catalyst with a hybrid of oxalic acid produced by Aspergillus niger and mineral acids

•Three modes of direct (one step and two step) and indirect bioleaching were examined.•pH adjustment during the direct bioleaching improves the platinum recovery significantly.•Recovery increased by pH reduction and temperature increase in the indirect system.•37% of the catalyst platinum content wa...

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Veröffentlicht in:	Waste management (Elmsford) 2019-02, Vol.85, p.264-271
Hauptverfasser:	Malekian, Hamed, Salehi, Mahsa, Biria, Davoud
Format:	Artikel
Sprache:	eng
Schlagworte:	Aspergillus niger Bioleaching Catalysis Minerals Oxalic Acid Platinum Platinum recovery Refinery catalyst
Online-Zugang:	Volltext
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