PNNL

Abstract

The goal of this project is to overcome CHG catalyst sulfur poisoning to enable commercially viable CHG processing of HTL aqueous waste streams with reasonable catalyst turn-over rates. If successful, several of the following objectives will be achieved. • Identification and confirmation of the efficacy of sulfur-tolerant catalyst for the conversion of soluble organics in HTL aqueous byproduct to methane or hydrogen. • Demonstration of long-term stability of sulfur tolerant catalysts. • Identification and exercise of a means to produce larger quantities of the promising catalyst (i.e., sufficient catalyst for a CHG system with a through put of 10 to 20 L/h of aqueous byproduct) • Demonstration of the technical feasibility of a novel sulfur removal process and approach for scale up and application.