Chematur Engineering Ab

Johnson Matthey Public Limited Company

Anders Gidner

Lars Berhil Stenmark

Brian Harrison

Simon Collard

A supercritical oxidation process carried out in water is capable of oxidizing 'organics' in precious metal organic compositions such as heterogeneous (Pt/C) or homogeneous precious metal catalysts and producing a precious metal oxide with few by-products and low losses of precious metal.

Precious metal recovery from organics-precious metal compositions with supercritical water reactant

In a high pressure and high temperature reaction system suitable for oxidative waste treatment, particularly a reaction system for supercritical water oxidation (SCWO), a method is disclosed for injecting a first fluid of a first temperature at a first flow rate into a second fluid of a second temperature at a second flow rate, mixing the first and the second fluids within a mixing length (), and wherein the first and second temperatures and the first and second flow rates are selected such that a temperature of the mixed fluids downstream of said mixing length () is obtained, at which said first fluid being substantially non-corrosive.

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Karlskoga, Sweden

Anders Gidner