It is acknowledged that, owing to the research state of the process, the available experimental data was of varied quality and completeness. Where necessary, simplifying assumptions and/or proxy data were used to develop the process models. Thus, the inventory data employed in the LCA model involves a considerable degree of uncertainty, inevitably affecting the accuracy of the calculated LCA results. However, efforts to adopt conservative LCI estimates were made at all points of this study such that the final LCA results represent worstcase scenarios.